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* dwarf2asm.c (dw2_asm_output_offset): Mark 'base' argument
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
1 2006-03-17  Steven Bosscher  <stevenb.gcc@gmail.com>
2
3         * dwarf2asm.c (dw2_asm_output_offset): Mark 'base' argument
4         with ATTRIBUTE_UNUSED.
5
6 2006-03-17  Alexandre Oliva  <aoliva@redhat.com>
7
8         * dwarf2out.c (dwarf2out_stack_adjust): Always track the stack
9         pointer, instead of assuming it is possible to derive the
10         correct args size from a call insn.
11
12 2006-03-16  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
13
14         * rtl.h (CONST_INT_P): Define.
15         * config/vax/vax.c (print_operand_address): Use CONST_INT_P()
16         instead of GET_CODE(x) == CONST_INT.
17         (vax_rtx_costs): Likewise.
18         (vax_output_int_move): Likewise.
19         (vax_output_int_add): Likewise.
20         (legitimate_constant_address_p): Likewise.
21         (index_term_p): Likewise.
22         * config/vax/vax.h (PRINT_OPERAND): Likewise.
23         * config/vax/vax.md (and<mode>3): Likewise.
24         (ashrsi3): Likewise.
25         (extv): Likewise.
26         (movstricthi): Likewise.
27         (movstrictqi): Likewise.
28         (rotrsi3): Likewise.
29         (five unnamed insns): Likewise.
30
31 2006-03-16  Geoffrey Keating  <geoffk@apple.com>
32
33         * doc/tm.texi (SDB and DWARF): Add extra parameter to
34         ASM_OUTPUT_DWARF_OFFSET.  Use @var to indicate metavariables.
35         * dwarf2asm.h (dw2_asm_output_offset): Add section parameter.
36         * dwarf2asm.c (dw2_asm_output_offset): Add base section parameter.
37         Pass to ASM_OUTPUT_DWARF_OFFSET.
38         * dwarf2out.c (debug_frame_section): New.
39         (output_call_frame_info): Use debug_frame_section.  Pass it to
40         dw2_asm_output_offset.
41         (output_die): Pass appropriate section to dw2_asm_output_offset.
42         (output_compilation_unit_header): Likewise.
43         (output_pubnames): Likewise.
44         (output_aranges): Likewise.
45         (enum dw_val_class): Break dw_val_class_lbl_offset into
46         dw_val_class_lineptr and dw_val_class_macptr.
47         (add_AT_lbl_offset): Delete.
48         (add_AT_lineptr): New.
49         (add_AT_macptr): New.
50         (AT_lbl): Expect a lineptr or macptr.
51         (print_die): Handle dw_val_class_lineptr and dw_val_class_macptr.
52         (attr_checksum): Likewise.
53         (same_dw_val_p): Likewise.
54         (size_of_die): Likewise.
55         (value_format): Likewise.
56         (output_die): Likewise.
57         (dwarf2out_finish): Call add_AT_lineptr and add_AT_macptr instead of
58         add_AT_lbl_offset.
59         * config/i386/cygming.h (ASM_OUTPUT_DWARF_OFFSET): Add extra parameter.
60         * config/i386/i386.c (x86_file_start): Call darwin_file_start.
61         * config/darwin-protos.h (darwin_file_start): New.
62         (darwin_asm_output_dwarf_offset): New.
63         * config/ia64/ia64.h (ASM_OUTPUT_DWARF_OFFSET): Add extra parameter.
64         * config/rs6000/rs6000.c (rs6000_darwin_file_start): Call
65         darwin_file_start.
66         * config/darwin.c (darwin_emit_unwind_label): Don't output label
67         if not EH section; simplify.
68         (darwin_file_start): New.
69         (darwin_asm_output_dwarf_offset): New.
70         * config/darwin.h (DEBUG_FRAME_SECTION): In __DWARF segment,
71         mark as 'debug'.
72         (DEBUG_INFO_SECTION): Likewise.
73         (DEBUG_ABBREV_SECTION): Likewise.
74         (DEBUG_ARANGES_SECTION): Likewise.
75         (DEBUG_MACINFO_SECTION): Likewise.
76         (DEBUG_LINE_SECTION): Likewise.
77         (DEBUG_LOC_SECTION): Likewise.
78         (DEBUG_PUBNAMES_SECTION): Likewise.
79         (DEBUG_STR_SECTION): Likewise.
80         (DEBUG_RANGES_SECTION): Likewise.
81         (FRAME_BEGIN_LABEL): Must start with 'L' in debug section.
82         (ASM_OUTPUT_DWARF_OFFSET): New.
83
84 2006-03-16  Joseph S. Myers  <joseph@codesourcery.com>
85
86         * config.gcc (tm_defines): Always add to previous value rather
87         than replacing it.
88
89 2006-03-16  Richard Sandiford  <richard@codesourcery.com>
90
91         * config/mips/predicates.md (splittable_const_int_operand): New,
92         split from move_operand.
93         (splittable_symbolic_operand): New.
94         (move_operand): Add commentary.  Use splittable_const_int_operand.
95         Inline mips_atomic_symbolic_constant_p.
96         * config/mips/mips.md: Add combine splitters for handling moves
97         of splittable_const_int_operands and splittable_symbolic_operands.
98         * config/mips/mips-protos.h (mips_atomic_symbolic_constant_p): Delete.
99         (mips_split_symbol): Declare.
100         (mips_move_integer): Declare.
101         * config/mips/mips.c (mips_split_p): Make global.
102         (TARGET_MIN_ANCHOR_OFFSET): Override default.
103         (TARGET_MAX_ANCHOR_OFFSET): Likewise.
104         (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Likewise.
105         (TARGET_USE_ANCHORS_FOR_SYMBOL_P): Likewise.
106         (mips_offset_within_object_p): Handle block symbols.
107         (mips_atomic_symbolic_constant_p): Delete.
108         (mips_cannot_force_const_mem): Return false for constants that
109         mips_legitimize_move can handle.
110         (mips_use_blocks_for_constant_p): New function.
111         (mips_split_symbol): Make global.
112         (mips_move_integer): Likewise.  Add a temporary register argument.
113         (mips_legitimize_const_move): Use splittable_const_int_operand and
114         splittable_symbolic_operand.
115         (mips_use_anchors_for_symbol_p): New function.
116         * config/mips/mips.h: Protect externs with !USED_FOR_TARGET.
117         (mips_split_p): Declare.  
118
119 2006-03-16  Richard Sandiford  <richard@codesourcery.com>
120
121         * config.gcc (mips64*-*-linux*): Keep existing tm_defines.
122         (mips*-*-linux*): Likewise.
123
124 2006-03-16  Roger Sayle  <roger@eyesopen.com>
125             Daniel Speyer  <dspeyer@wam.umd.edu>
126
127         PR middle-end/18259
128         * tree-dump.c (dump_real): New function.
129         (dequeue_and_dump) <REAL_CST>: Use it to dump FP constants.
130         * Makefile.in (REAL_H): New macro for dependencies on real.h.
131         (tree-dump.o): Add $(REAL_H) to the dependencies.
132
133 2006-03-16  Roger Sayle  <roger@eyesopen.com>
134
135         PR middle-end/21781
136         * real.c (real_from_string): If the mantissa is zero, don't bother
137         parsing the exponent as the result should always be zero.
138
139 2006-03-16  Andreas Krebbel  <krebbel1@de.ibm.com>
140
141         * simplify-rtx.c (simplify_plus_minus): Simplify within CONST terms.
142
143 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
144
145         * config/ia64/ia64.c (stops_p): Added explicit initialization.
146         (ia64_first_cycle_multipass_dfa_lookahead_guard_spec,
147         ia64_h_i_d_extended, ia64_set_sched_flags, ia64_speculate_insn,
148         ia64_needs_block_p, ia64_gen_check, ia64_sched_init_global,
149         ia64_sched_finish_global): New static functions to implement
150         hooks from gcc_target.sched.
151         (spec_check_no, max_uid, pending_data_specs): New static variables.
152         (ia64_mode_to_int, ia64_gen_spec_insn, ia64_spec_check_p,
153         ia64_spec_check_src_p): New static functions.
154         (ia64_adjust_cost): Renamed to ia64_adjust_cost_2.
155         (TARGET_SCHED_ADJUST_COST): Removed.
156         (TARGET_SCHED_ADJUST_COST_2, TARGET_SCHED_INIT_GLOBAL,
157         TARGET_SCHED_FINISH_GLOBAL, TARGET_SCHED_H_I_D_EXTENDED,
158         TARGET_SCHED_SPECULATE_INSN, TARGET_SCHED_NEEDS_BLOCK_P,
159         TARGET_SCHED_GEN_CHECK,
160         TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
161         TARGET_SCHED_SET_SCHED_FLAGS): New macros.
162         (update_set_flags, group_barrier_needed, set_src_needs_barrier):
163         Fixed to handle speculation checks.
164         (rtx_needs_barrier): Fixed to handle speculative loads and
165         their checks.
166         (ia64_variable_issue): Added code to count speculative loads and their
167         checks.
168         (ia64_first_cycle_multipass_dfa_lookahead_guard): Fixed to handle
169         speculative loads.
170         (enum SPEC_MODES, enum SPEC_GEN_LD_MAP, SPEC_GEN_CHECK_OFFSET):
171         New enumerations.
172         (SPEC_GEN_EXTEND_OFFSET, SPEC_N, SPEC_GEN_CHECK_MUTATION_OFFSET):
173         New constants.
174         (ia64_ld_address_bypass_p): Fixed to handle speculative loads.
175         (ia64_reorg): Reset stops_p to NULL after it is freed.
176         * config/ia64/ia64.md (UNSPEC_LDA, UNSPEC_LDS, UNSPEC_LDSA,
177         UNSPEC_LDCCLR, UNSPEC_CHKACLR, UNSPEC_CHKS): New constants.
178         (itanium_class): chk_s renamed to chk_s_i.  New constants: chk_s_f,
179         chk_a.
180         (data_speculative, control_speculative, check_load): New attributes.
181         (mov<mode>_advanced, mov<mode>_speculative,
182         mov<mode>_speculative_advanced, zero_extend<mode>di2_advanced,
183         zero_extend<mode>di2_speculative,
184         zero_extend<mode>di2_speculative_advanced): New patterns for
185         data and control speculative loads.
186         (mov<mode>_clr, zero_extend<mode>di2_clr): New patterns for
187         check loads.
188         (advanced_load_check_clr_<mode>, speculation_check_<mode>):
189         New pattern for data and control speculation checks.
190         (MODE, MODE_FOR_EXTEND, output_a, output_s, output_sa, output_c_clr,
191         ld_reg_constr, ldc_reg_constr, chk_reg_constr, mem_constr,
192         reg_pred_prefix, ld_class, chka_class, chks_class, attr_yes):
193         Auxiliary definitions for the patterns.
194         * config/ia64/itanium1.md (1_fldc, 1_fldpc, 1_ldc, 1_chk_s_f, 1_chk_a,
195         1b_fldc, 1b_fldpc, 1b_ldc, 1b_chk_s_f, 1b_chk_a): New resource
196         constraints.
197         (1_fld, 1_fldp, 1_ld, 1b_fld, 1b_fldp, 1b_ld): Add a condition
198         for speculation.
199         (1_chk_s, 1b_chk_s): Renamed to 1_chk_s_i, 1b_chk_s_i.
200         * config/ia64/itanium2.md (2_flda, 2_fldc, 2_fldpc, 2_ldc, 2_chk_s_f,
201         2_chk_a, 2b_flda, 2b_fldc, 2b_fldpc, 2b_ldc, 2b_chk_s_f, 2b_chk_a):
202         New resource constraints.
203         (2_fld, 2_fldp, 2_ld, 2b_fld, 2b_fldp, 2b_ld): Add a condition
204         for speculation.
205         (2_chk_s, 2b_chk_s): Renamed to 2_chk_s_i, 2b_chk_s_i.
206         * config/ia64/ia64.opt (msched-br-data-spec, msched-ar-data-spec,
207         msched-control-spec, msched-br-in-data-spec, msched-ar-in-data-spec,
208         msched-in-control-spec, msched-ldc, msched-control-ldc,
209         msched-spec-verbose, msched-prefer-non-data-spec-insns,
210         msched-prefer-non-control-spec-insns,
211         msched-count-spec-in-critical-path): New flags to tune speculative
212         scheduling.
213         * doc/invoke.texi (msched-br-data-spec, msched-ar-data-spec,
214         msched-control-spec, msched-br-in-data-spec, msched-ar-in-data-spec,
215         msched-in-control-spec, msched-ldc, msched-control-ldc,
216         msched-spec-verbose, msched-prefer-non-data-spec-insns,
217         msched-prefer-non-control-spec-insns,
218         msched-count-spec-in-critical-path): Document new flags.
219
220 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
221
222         * target.h (struct spec_info_def): New opaque declaration.
223         (struct gcc_target.sched): New fields: adjust_cost_2, h_i_d_extended,
224         speculate_insn, needs_block_p, gen_check,
225         first_cycle_multipass_dfa_lookahead_guard_spec, set_sched_flags.
226         * target-def.h (TARGET_SCHED_ADJUST_COST_2,
227         TARGET_SCHED_H_I_D_EXTENDED, TARGET_SCHED_SPECULATE_INSN,
228         TARGET_SCHED_NEEDS_BLOCK_P, TARGET_SCHED_GEN_CHECK,
229         TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
230         TARGET_SCHED_SET_SCHED_FLAGS): New macros to initialize fields in
231         gcc_target.sched.
232         (TARGET_SCHED): Use new macros.
233         * rtl.h (copy_DEPS_LIST_list): New prototype.
234         * sched-int.h (struct sched_info): Change signature of new_ready field,
235         adjust all initializations. New fields: add_remove_insn,
236         begin_schedule_ready, add_block, advance_target_bb, fix_recovery_cfg,
237         region_head_or_leaf_p.
238         (struct spec_info_def): New structure declaration.
239         (spec_info_t): New typedef.
240         (struct haifa_insn_data): New fields: todo_spec, done_spec, check_spec,
241         recovery_block, orig_pat.
242         (glat_start, glat_end): New variables declaraions.
243         (TODO_SPEC, DONE_SPEC, CHECK_SPEC, RECOVERY_BLOCK, ORIG_PAT):
244         New access macros.
245         (enum SCHED_FLAGS): New constants: SCHED_RGN, SCHED_EBB,
246         DETACH_LIFE_INFO, USE_GLAT.
247         (enum SPEC_SCHED_FLAGS): New enumeration.
248         (NOTE_NOTE_BB_P): New macro.
249         (extend_dependency_caches, xrecalloc, unlink_bb_notes, add_block,
250         attach_life_info, debug_spec_status, check_reg_live): New functions.
251         (get_block_head_tail): Change signature to get_ebb_head_tail, adjust
252         all uses in ddg.c, modulo-sched.c, haifa-sched.c, sched-rgn.c,
253         sched-ebb.c
254         (get_dep_weak, ds_merge): Prototype functions from sched-deps.c .
255         * ddg.c (get_block_head_tail): Adjust all uses.
256         * modulo-sched.c (get_block_head_tail): Adjust all uses.
257         (sms_sched_info): Initialize new fields.
258         (contributes_to_priority): Removed.
259         * haifa-sched.c (params.h): New include.
260         (get_block_head_tail): Adjust all uses.
261         (ISSUE_POINTS): New macro.
262         (glat_start, glat_end): New global variables.
263         (spec_info_var, spec_info, added_recovery_block_p, nr_begin_data,
264         nr_be_in_data, nr_begin_control, nr_be_in_control, bb_header,
265         old_last_basic_block, before_recovery, current_sched_info_var,
266         rgn_n_insns, luid): New static variables.
267         (insn_cost1): New function.  Move logic from insn_cost to here.
268         (find_insn_reg_weight1): New function.  Move logic from
269         find_insn_reg_weight to here.
270         (reemit_notes, move_insn, max_issue): Change signature.
271         (move_insn1): Removed.
272         (extend_h_i_d, extend_ready, extend_global, extend_all, init_h_i_d,
273         extend_bb): New static functions to support extension of scheduler's
274         data structures.
275         (generate_recovery_code, process_insn_depend_be_in_spec,
276         begin_speculative_block, add_to_speculative_block,
277         init_before_recovery, create_recovery_block, create_check_block_twin,
278         fix_recovery_deps): New static functions to support
279         generation of recovery code.
280         (fix_jump_move, find_fallthru_edge, dump_new_block_header,
281         restore_bb_notes, move_block_after_check, move_succs): New static
282         functions to support ebb scheduling.
283         (init_glat, init_glat1, attach_life_info1, free_glat): New static
284         functions to support handling of register live information.
285         (associate_line_notes_with_blocks, change_pattern, speculate_insn,
286         sched_remove_insn, clear_priorities, calc_priorities, bb_note,
287         add_jump_dependencies): New static functions.
288         (check_cfg, has_edge_p, check_sched_flags): New static functions for
289         consistancy checking.
290         (debug_spec_status): New function to call from debugger.
291         (priority): Added code to handle speculation checks.
292         (rank_for_schedule): Added code to distinguish speculative instructions.
293         (schedule_insn): Added code to handle speculation checks.
294         (unlink_other_notes, rm_line_notes, restore_line_notes, rm_other_notes):
295         Fixed to handle ebbs.
296         (move_insn): Added code to handle ebb scheduling.
297         (max_issue): Added code to use ISSUE_POINTS of instructions.
298         (choose_ready): Added code to choose between speculative and
299         non-speculative instructions.
300         (schedule_block): Added code to handle ebb scheduling and scheduling of
301         speculative instructions.
302         (sched_init): Initialize new variables.
303         (sched_finish): Free new variables.  Print statistics.
304         (try_ready): Added code to handle speculative instructions.
305         * lists.c (copy_DEPS_LIST_list): New function.
306         * sched-deps.c (extend_dependency_caches): New function.  Move logic
307         from create_dependency_caches to here.
308         (get_dep_weak, ds_merge): Make global.
309         * genattr.c (main): Code to output prototype for
310         dfa_clear_single_insn_cache.
311         * genautomata.c (DFA_CLEAR_SINGLE_INSN_CACHE_FUNC_NAME): New macros.
312         (output_dfa_clean_insn_cache_func): Code to output
313         dfa_clear_single_insn_cache function.
314         * sched-ebb.c (target_n_insns): Remove.  Adjust all users to use
315         n_insns.
316         (can_schedule_ready_p, fix_basic_block_boundaries, add_missing_bbs):
317         Removed.
318         (n_insns, dont_calc_deps, ebb_head, ebb_tail, last_bb):
319         New static variables.
320         (begin_schedule_ready, add_remove_insn, add_block1, advance_target_bb,
321         fix_recovery_cfg, ebb_head_or_leaf_p): Implement hooks from
322         struct sched_info.
323         (ebb_sched_info): Initialize new fields.
324         (get_block_head_tail): Adjust all uses.
325         (compute_jump_reg_dependencies): Fixed to use glat_start.
326         (schedule_ebb): Code to remove unreachable last block.
327         (schedule_ebbs): Added code to update register live information.
328         * sched-rgn.c (region_sched_info): Initialize new fields.
329         (get_block_head_tail): Adjust all uses.
330         (last_was_jump): Removed.  Adjust users.
331         (begin_schedule_ready, add_remove_insn, insn_points, extend_regions,
332         add_block1, fix_recovery_cfg, advance_target_bb, region_head_or_leaf_p):
333         Implement new hooks.
334         (check_dead_notes1): New static function.
335         (struct region): New fields: dont_calc_deps, has_real_ebb.
336         (RGN_DONT_CALC_DEPS, RGN_HAS_REAL_EBB): New access macros.
337         (BB_TO_BLOCK): Fixed to handle EBBs.
338         (EBB_FIRST_BB, EBB_LAST_BB): New macros.
339         (ebb_head): New static variable.
340         (debug_regions, contributes_to_priority): Fixed to handle EBBs.
341         (find_single_block_regions, find_rgns, find_more_rgns): Initialize
342         new fields.
343         (compute_dom_prob_ps): New assertion.
344         (check_live_1, update_live_1): Fixed to work with glat_start instead of
345         global_live_at_start.
346         (init_ready_list): New assertions.
347         (can_schedule_ready_p): Split update code to begin_schedule_ready.
348         (new_ready): Add support for BEGIN_CONTROL speculation.
349         (schedule_insns): Fixed code that updates register live information
350         to handle EBBs.
351         (schedule_region): Fixed to handle EBBs.
352         (init_regions): Use extend_regions and check_dead_notes1.
353         * params.def (PARAM_MAX_SCHED_INSN_CONFLICT_DELAY,
354         PARAM_SCHED_SPEC_PROB_CUTOFF): New parameters.
355         * doc/tm.texi (TARGET_SCHED_ADJUST_COST_2, TARGET_SCHED_H_I_D_EXTENDED,
356         TARGET_SCHED_SPECULATE_INSN, TARGET_SCHED_NEEDS_BLOCK_P,
357         TARGET_SCHED_GEN_CHECK,
358         TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
359         TARGET_SCHED_SET_SCHED_FLAGS): Document.
360         * doc/invoke.texi (max-sched-insn-conflict-delay,
361         sched-spec-prob-cutoff): Document.
362
363 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
364
365         * sched-int.h (struct haifa_insn_data): New fields: resolved_deps,
366         inter_tick, queue_index.
367         (struct sched_info): Change signature of init_ready_list field.
368         Adjust all initializations.
369         (RESOLVED_DEPS): New access macro.
370         (ready_add): Remove prototype.
371         (try_ready): Add prototype.
372         * sched-rgn.c (init_ready_list): Use try_ready.
373         (schedule_region): Initialize
374         current_sched_info->{sched_max_insns_priority, queue_must_finish_empty}.
375         * sched-ebb.c (new_ready): Remove.  Adjust ebb_sched_info.
376         (init_ready_list): Use try_ready.
377         (schedule_ebb): Initialize current_sched_info->sched_max_insns_priority.
378         * lists.c (remove_list_elem): Remove `static'.
379         (remove_free_INSN_LIST_elem): New function.
380         * rtl.h (remove_list_elem, remove_free_INSN_LIST_elem): Add prototypes.
381         * haifa-sched.c (INTER_TICK, QUEUE_INDEX): New macros.
382         (INVALID_TICK, MIN_TICK, QUEUE_SCHEDULED, QUEUE_NOWHERE, QUEUE_READY):
383         New constants.
384         (readyp): New variable.
385         (queue_remove, ready_remove_insn, fix_inter_tick, fix_tick_ready,
386         change_queue_index, resolve_dep): New static functions.
387         (try_ready): New function.  Adjust callers in sched-rgn.c and
388         sched-ebb.c to use it instead of ready_add.
389         (clock_var): Move at the begining of file.
390         (rank_for_schedule): Fix typo.
391         (queue_insn): Add assertion.  Handle QUEUE_INDEX.
392         (ready_lastpos): Enforce assertion.
393         (ready_add): Make it static.  Handle QUEUE_INDEX.  Add new argument,
394         update all callers.
395         (ready_remove_first, ready_remove): Handle QUEUE_INDEX.
396         (schedule_insn): Rewrite to use try_ready and resolve_dep.
397         (queue_to_ready): Use free_INSN_LIST_list.
398         (early_queue_to_ready): Fix typo.
399         (schedule_block): Init readyp.  Move init_ready_list call after the
400         initialization of clock_var.  Fix error in rejecting insn by
401         targetm.sched.dfa_new_cycle.  Add call to fix_inter_tick.  Remove code
402         that previously corrected INSN_TICKs.  Add code for handling
403         QUEUE_INDEX.
404         (set_priorities): Fix typo.
405         (sched_init): Initialize INSN_TICK, INTER_TICK and QUEUE_INDEX.
406         Clarify comment and code that keeps current_sched_info->next_tail
407         non-null.
408
409 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
410
411         * sched-rgn.c (extend_rgns): New static function.
412         (find_rgns): Use it.
413         (gather_region_statistics, print_region_statistics): New static
414         functions.
415         * params.def (PARAM_MAX_SCHED_EXTEND_REGIONS_ITERS): New parameter.
416         * doc/invoke.texi (max-sched-extend-regions-iters): Document.
417
418 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
419             Andrey Belevantsev <abel@ispras.ru>
420
421         * ddg.c (build_intra_loop_deps): Adjust add_forward_dependence call.
422         * lists.c (unused_deps_list): New variable.
423         (free_list): Add assertions to verify the proper distinguishing 
424         between INSN_LISTs and DEPS_LISTs.
425         (find_list_elem, remove_list_elem, remove_list_node): New static
426         functions.
427         (alloc_DEPS_LIST, free_DEPS_LIST, free_DEPS_LIST_node,
428         remove_free_INSN_LIST_elem, remove_free_DEPS_LIST_elem,
429         remove_free_INSN_LIST_node, remove_free_DEPS_LIST_node): New functions.
430         (alloc_INSN_LIST): Assert that the list we're working on is indeed
431         an INSN_LIST.
432         (free_INSN_LIST_node): Likewise.
433         * modulo-sched.c (current_sched_info): Initialize flags field.
434         * reg-notes.def: Exchange DEP_ANTI and DEP_OUTPUT.
435         * rtl.def (DEPS_LIST): Define.
436         * rtl.h: Declare new functions from lists.c.
437         * sched-deps.c (spec_dependency_cache): New static variable.
438         (maybe_add_or_update_back_dep_1, add_back_dep): New static functions.
439         (add_dependence): Change return type to void.  Move the logic to ...
440         (add_or_update_back_dep_1): ... here.  Handle speculative dependencies.
441         (delete_all_dependences): Add comment about forward_dependency_cache.
442         Handle spec_dependency_cache.  Handle DEPS_LISTs.
443         (fixup_sched_groups): Clarify the change of priority of output
444         and anti dependencies.
445         (sched_analyze_2): Adjust add_dependence calls to create data
446         speculative dependence.
447         (add_forward_dependence): Renamed to add_forw_dep, change prototype.
448         Adjust all callers.  Handle DEPS_LISTS.
449         (compute_forward_dependences): Use add_forw_dep.  Sort LOG_LINKs in
450         presence of speculation.
451         (init_dependency_caches, free_dependency_caches):
452         Handle spec_dependency_cache.
453         (adjust_add_sorted_back_dep, adjust_back_add_forw_dep, delete_forw_dep,
454         estimate_dep_weak, get_dep_weak, ds_merge, check_dep_status):
455         New static functions.
456         (add_or_update_back_dep, add_or_update_back_forw_dep,
457         add_back_forw_dep, delete_back_forw_dep): New functions.
458         * sched-int.h (ds_t, dw_t): New typedefs.
459         (struct sched_info): Add new field flags.
460         (struct haifa_insn_data): Add new bitfield has_internal_dep.
461         Prototype new sched-deps.c functions.
462         (HAS_INTERNAL_DEP, DEP_STATUS): New access macros.
463         (BITS_PER_DEP_STATUS, BITS_PER_DEP_WEAK, DEP_WEAK_MASK, MAX_DEP_WEAK,
464         MIN_DEP_WEAK, NO_DEP_WEAK, UNCERTAIN_DEP_WEAK, BEGIN_DATA, BE_IN_DATA,
465         BEGIN_CONTROL, BE_IN_CONTROL, BEGIN_SPEC, DATA_SPEC, CONTROL_SPEC,
466         SPECULATIVE, BE_IN_SPEC, FIRST_SPEC_TYPE, LAST_SPEC_TYPE,
467         SPEC_TYPE_SHIFT, DEP_TRUE, DEP_OUTPUT, DEP_ANTI, DEP_TYPES, HARD_DEP):
468         New constants.
469         (enum SPEC_TYPES_OFFSETS, enum DEPS_ADJUST_RESULT, enum SCHED_FLAGS):
470         New enums.
471         * sched-rgn.c (current_sched_info): Initialize flags field.
472         (schedule_insns): Initialize current_sched_info before the sched_init
473         call.
474         * sched-ebb.c (current_sched_info): Initialize flags field.
475         (add_deps_for_risky_insns): Use control_flow_insn_p instead of JUMP_P.
476         Call add_or_update_back_dep instead of add_dependence.
477         Create control speculative dependencies.
478         (schedule_insns): Initialize current_sched_info before the sched_init
479         call.
480
481 2006-03-16  Kaz Kojima  <kkojima@gcc.gnu.org>
482
483         * config/sh/linux-unwind.h (shmedia_fallback_frame_state): Set
484         fs->signal_frame.
485         (sh_fallback_frame_state): Likewise.
486
487 2006-03-15  Geoffrey Keating  <geoffk@apple.com>
488
489         * config.gcc (*-*-darwin*): Don't build crt2.o for all Darwin ports.
490         Do switch on default_use_cxa_atexit.
491         (powerpc*-*-darwin*): Build crt2.o on powerpc.
492         * config/darwin-crt3.o: New.
493         * config/darwin.h (LINK_SPEC): If -shared-libgcc, make linker default
494         to 10.3.  Pass '-multiply_defined suppress' if crt3.o is in use.
495         (STARTFILE_SPEC): Add crt3.o when -shared-libgcc and appropriate
496         OS version.
497         * config/rs6000/t-darwin: Move crt2.o building to here.
498         * config/rs6000/darwin.h (C_COMMON_OVERRIDE_OPTIONS): Update
499         Mac OS version for using __cxa_get_exception_ptr.  Don't test versions
500         of __cxa_atexit.
501
502 2006-03-15  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
503
504         * config/vax/vax.c (nonindexed_address_p): Change logical negation
505         from '! xxx' to '!xxx' for coding-style conformance.
506         * config/vax/vax.h (PCC_BITFIELD_TYPE_MATTERS): Likewise.
507         (EXTRA_CONSTRAINT): Likewise.
508         * config/vax/vax.md (four unnamed insns): Likewise.
509         
510 2006-03-15  Paul Brook  <paul@codesourcery.com>
511
512         * config/arm/arm.c (minipool_pad): New.
513         (add_minipool_forward_ref): Include pool alignment padding in address
514         calculation.
515         (push_minipool_fix): Set minipool_pad.
516         (minipool_pad): Ditto.
517
518 2006-03-15  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
519
520         * config/vax/vax.c (split_quadword_operands): Use MEM_P()
521         instead of GET_CODE() == MEM and REG_P() instead of
522         GET_CODE() == REG.
523         (print_operand_address): Likewise.
524         (vax_address_cost): Likewise.
525         (vax_rtx_costs): Likewise.
526         (vax_notice_update_cc): Likewise.
527         (vax_output_int_add): Likewise.
528         (INDEX_REGISTER_P): Likewise.
529         (BASE_REGISTER_P): Likewise.
530         (nonindexed_address_p): Likewise.
531         (vax_mode_dependent_address_p): Likewise.
532         * config/vax/vax.h (EXTRA_CONSTRAINT): Likewise.
533         (PRINT_OPERAND): Likewise.
534         * config/vax/vax.md (ashlsi3): Likewise.
535         (ashlsi3): Likewise.
536         (some more unnamed insns): Likewise.
537
538 2006-03-15  Kazu Hirata  <kazu@codesourcery.com>
539
540         * tree-ssa-dce.c (EXECUTE_IF_CONTROL_DEPENDENT): Make it an
541         iterator-style macro.
542         (mark_control_dependent_edges_necessary): Update the use of
543         EXECUTE_IF_CONTROL_DEPENDENT.
544
545 2006-03-15  J"orn Rennecke <joern.rennecke@st.com>
546
547         * config/sh/predicates.md (cache_address_operand): Special.
548         (ua_address_operand): Likewise.
549
550 2006-03-15  Zdenek Dvorak <dvorakz@suse.cz>
551
552         * haifa-sched.c (unlink_other_notes, reemit_notes): Do not handle
553         loop notes.
554         * sched-deps.c (sched_analyze_insn, sched_analyze): Ditto.
555
556 2006-03-15  Andreas Schwab  <schwab@suse.de>
557
558         * gensupport.c (identify_predicable_attribute): Don't free p_false
559         when it is still in use.
560
561 2006-03-15  Eric Botcazou  <ebotcazou@libertysurf.fr>
562
563         * config.gcc (default with_cpu setting) <sparc*-*-*>: Do not modify
564         the default setting here.
565
566 2006-03-14  Steven Bosscher  <stevenb.gcc@gmail.com>
567
568         * tree-pass.h (pass_cfg): Remove.
569         * alias.c (rest_of_handle_cfg, pass_cfg): Remove.
570         * passes.c (pass_cfg): Don't run it.
571
572 2006-03-14  Kazu Hirata  <kazu@codesourcery.com>
573
574         * Makefile.in (reg-stack.o): Don't depend on gt-reg-stack.h.
575         * reg-stack.c (stack_regs_mentioned_data): Change the type to
576         VEC(char,heap) *.
577         (stack_regs_mentioned): Update the uses of
578         stack_regs_mentioned_data.  Don't access the array beyond its
579         end.
580         (reg_to_stack): Update the uses of stack_regs_mentioned_data.
581         Don't include gt-reg-stack.h.
582
583         * config/bfin/bfin.h (UNALIGNED_WORD_ASM_OP): Remove.
584         * system.h (UNALIGNED_WORD_ASM_OP): Poison.
585
586         * combine.c (UWIDE_SHIFT_LEFT_BY_BITS_PER_WORD): Remove.
587
588         PR middle-end/26684
589         * reg-stack.c (stack_regs_mentioned_data): Put it undef #ifdef
590         STACK_REGS.
591
592 2006-03-14  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
593
594         * pa/pa32-linux.h (CRT_CALL_STATIC_FUNCTION): Fix typo.
595
596 2006-03-14  Richard Guenther  <rguenther@suse.de>
597
598         PR tree-optimization/26672
599         * tree-ssa-propagate.c (set_rhs): Don't walk DEFs if not in
600         SSA form.
601
602 2006-03-14  Richard Guenther  <rguenther@suse.de>
603
604         PR tree-optimization/26667
605         * ipa-inline.c (cgraph_check_inline_limits): Walk the correct
606         node for the callees.  Always allow inlining if it will shrink
607         the function size.
608
609 2006-03-14  Richard Guenther  <rguenther@suse.de>
610
611         PR middle-end/26659
612         * builtins.c (get_pointer_alignment): Prefer alignment
613         information from decls over that from types.
614
615 2006-03-14  Andrew Pinski  <pinskia@physics.uc.edu>
616
617         PR target/26657
618         * config/darwin.h (LINK_COMMAND_SPEC): Handle -fopenmp.
619
620 2006-03-14  Joseph S. Myers  <joseph@codesourcery.com>
621
622         * config/rs6000/rs6000.opt (mdlmzb): New option.
623         (msched-prolog, msched-epilog): Use Var not Mask.
624         * doc/invoke.texi (-mdlmzb): Document.
625         * config/rs6000/rs6000.c (TARGET_DEFAULT_TARGET_FLAGS): Remove
626         MASK_SCHED_PROLOG.
627         (rs6000_override_options): Enable -mdlmzb for 405 and 440.
628         * config/rs6000/rs6000.md: Add dlmzb support for 405 and 440.
629
630 2006-03-13  Uttam Pawar  <uttamp@us.ibm.com>
631
632         PR rtl-optimization/25739
633         * bt-load.c (augment_live_range): Free tos pointer.
634
635         * gensupport.c (identify_predicable_attribute): Free
636         p_false pointer.
637         * gcov.c (create_file_names): Free name pointer.
638
639 2006-03-13  Roger Sayle  <roger@eyesopen.com>
640
641         PR middle-end/26557
642         * stmt.c (emit_case_nodes): Handle the case where the index is a
643         CONST_INT, where the comparison mode is specified by the index type.
644
645 2006-03-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
646
647         * pa/pa32-linux.h (CRT_CALL_STATIC_FUNCTION): Define when CRTSTUFFS_O
648         is defined.
649
650 2006-03-13  Richard Sandiford  <richard@codesourcery.com>
651
652         * config/mips/mips.md (*branch_fp): Use %Z2 for the condition.
653         (*branch_fp_inverted): Likewise.
654
655 2006-03-13  Jakub Jelinek  <jakub@redhat.com>
656
657         PR middle-end/25989
658         * omp-low.c (expand_omp_for_generic): Mark istart0
659         and iend0 as addressable.
660
661 2006-03-13  Jie Zhang  <jie.zhang@analog.com>
662
663         * config/bfin/uclinux.h: Define _GNU_SOURCE in CPLUSPLUS_CPP_SPEC.
664
665 2006-03-13  Jeff Law  <law@redhat.com>
666
667         * tree-vrp.c (stmt_interesting_for_vrp): Some statements with
668         virtual operands are interesting.
669         (vrp_visit_stmt): Corresponding changes.
670
671 2006-03-13  Bernd Schmidt  <bernd.schmidt@analog.com>
672
673         * config/bfin/lib1funcs.asm (___umodsi3): Use stack to save contents
674         of RETS.
675         * config/bfin/bfin.h (TARGET_CPU_CPP_BUILTINS): If
676         TARGET_ID_SHARED_LIBRARY, define __ID_SHARED_LIB__.
677         * config/bfin/crti.S: Use it instead of __PIC__.
678         * config/bfin/crtn.S: Likewise.
679
680         * config/bfin/bfin.md (call_value_symbol, sibcall_value_symbol,
681         call_symbol, sibcall_symbol): Disallow if TARGET_ID_SHARED_LIBRARY,
682         not if flag_pic.
683         Lose 'G' modifier for call operand.
684         * config/bfin/bfin.c (print_operand) <case SYMBOL_REF>: Don't
685         recognize 'G' modifier.
686
687 2006-03-13  Eric Botcazou  <ebotcazou@adacore.com>
688
689         PR middle-end/18859
690         * gimplify.c (gimplify_switch_expr): Discard empty ranges.
691         * stmt.c (expand_case): Likewise.
692
693 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
694
695         PR rtl-optimization/26254
696         * loop-invariant.c (seq_insns_valid_p): New function.
697         (move_invariant_reg): Only emit new code if it is valid.
698
699 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
700
701         * cfgrtl.c (last_loop_beg_note, back_edge_of_syntactic_loop_p):
702         Removed.
703         (force_nonfallthru_and_redirect): Do not use last_loop_beg_note.
704         (rtl_split_edge): Do not use back_edge_of_syntactic_loop_p.
705         (commit_one_edge_insertion): Do not look for loop notes.
706
707 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
708
709         * jump.c (follow_jumps): Do not check for loop notes.  Move check for
710         flag_test_coverage out of loop.
711
712 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
713
714         * final.c (shorten_branches): Remove outdated comment, and turn
715         the if branch that guards it to continue.
716
717 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
718
719         * cfgloop.c (flow_loop_dump): Do not dump loop->invalid field.
720         * cfgloop.h (struct loop): Remove unused fields.
721
722 2006-03-13  Kazu Hirata  <kazu@codesourcery.com>
723
724         * doc/invoke.texi (-fdump-rtl-loop): Remove.
725         (-dL, -fdump-rtl-loop2): Update the dump file names 
726
727         * doc/invoke.texi: Update dump file names.
728
729 2006-03-12  Steven Bosscher  <stevenb.gcc@gmail.com>
730
731         * predict.c (estimate_probability): Remove.
732         * profile.c (rest_of_handle_branch_prob, pass_branch_prob): Remove.
733         * basic-block.h (estimate_probability): Remove prototype.
734         * passes.c (finish_optimization_passes): Dump branch prediction or
735         profiling heuristics to the .profile tree dump.
736         (init_optimization_passes): Unqueue pass_branch_prob.
737
738         * doc/invoke.texi (-fdump-rtl-bp): Remove.
739
740 2006-03-11  Steven Bosscher  <stevenb.gcc@gmail.com>
741
742         * rtl.def (LABEL_REF): Remove the field for LABEL_NEXTREF.
743         * rtl.h (LABEL_NEXTREF): Remove field accessor.
744
745 2006-03-11  Eric Botcazou  <ebotcazou@adacore.com>
746
747         * function.h (frame_offset_overflow): Declare.
748         * function.c (frame_offset_overflow): New function.
749         (assign_stack_local_1): Call it to detect that the offset overflows.
750         * cfgexpand.c (alloc_stack_frame_space): Likewise.
751
752 2006-03-11  Steven Bosscher  <stevenb.gcc@gmail.com>
753
754         * config/sh/sh.c: Include alloc-pool.h.
755         (label_ref_list_pool): New alloc pool.
756         (label_ref_list_t): New type for lists of labels.
757         (struct pool_node): Make wend a label_ref_list_t.
758         (add_constant): Use the new type, eradicate LABEL_NEXTREF
759         references.
760         (dump_table): Likewise.
761         (sh_reorg): Set up the alloc pool before using add_constant and
762         dump_table, and destroy it when finishing.
763
764 2006-03-11  Richard Sandiford  <richard@codesourcery.com>
765
766         * config/mips/mips.c: Remove redundant comment.
767
768 2006-03-10  Jason Merrill  <jason@redhat.com>
769
770         PR c/26004
771         * gimplify.c (gimplify_modify_expr_rhs): Don't do return slot opt if 
772         the target was declared 'register'.
773
774 2006-03-10  Adam Nemet  <anemet@caviumnetworks.com>
775
776         * genpreds.c (write_insn_constraint_len): Change definition of
777         insn_constraint_len to return size_t to match the declaration.
778
779 2006-03-10  DJ Delorie  <dj@redhat.com>
780
781         * config/m32c/m32c.c (m32c_const_ok_for_constraint_p): Bit numbers
782         start at zero.
783         (m32c_expand_insv): Fix test for an AND mask.
784
785 2006-03-10  Richard Guenther  <rguenther@suse.de>
786
787         PR middle-end/26565
788         * builtins.c (get_pointer_alignment): Handle component
789         references for field alignment.
790
791 2006-03-10  J"orn Rennecke <joern.rennecke@st.com>
792
793         * config.gcc (sh*-superh-elf, sh*elf (newlib)): Use newlib.h
794         when building with libgloss.
795         (sh*elf): Implement --without-fp option.
796         (sh64-superh-linux*): Don't multilib. 
797
798 2006-03-10  J"orn Rennecke <joern.rennecke@st.com>
799
800         * struct-equiv.c (rtx_equiv_p): Fix POST_MODIFY case.
801
802 2006-03-09  Andrew Pinski  <pinskia@physics.uc.edu>
803
804         * tree-ssa-phiopt.c (tree_ssa_phiopt): Add cfgchanged variable.
805         Set it when one of the replacement functions returned true.
806         Return TODO_cleanup_cfg if cfgchanged is true.
807         (pass_phiopt) <todo_flags_finish>: Remove TODO_cleanup_cfg.
808
809 2006-03-09  Adam Nemet  <anemet@caviumnetworks.com>
810
811         * combine.c (simplify_shift_const_1): Use gen_lowpart_or_truncate
812         instead of gen_lowpart.
813
814 2006-03-09  Richard Sandiford  <richard@codesourcery.com>
815
816         * config/mips/mips-protos.h (mips_output_conditional_branch): Change
817         interface.
818         (mips_output_order_conditional_branch): Declare.
819         * config/mips/mips.h (MIPS_BRANCH): New macro.
820         * config/mips/mips.c (gen_conditional_branch): Use VOIDmode
821         for the comparison.  Use gen_condjump.
822         (mips_output_conditional_branch): Rework interface to take the
823         asm templates for a direct branch and the inverse of a direct branch.
824         (mips_output_order_conditional_branch): New function.
825         (mips_builtin_branch_and_move): New function.
826         (mips_expand_builtin_compare): Use it.  Use VOIDmode for the
827         branch condition.  Use gen_single_cc as the condition for
828         __builtin_mips_upper_* or __builtin_mips_lower_*.
829         (mips_expand_builtin_bposge): Use mips_builtin_branch_and_move.
830         Use VOIDmode for the branch condition.
831         * config/mips/predicates.md (order_operator): New predicate.
832         * config/mips/mips.md (UNSPEC_SINGLE_CC): New constant.
833         (branch_fp): Rename to...
834         (*branch_fp): ...this.  Remove mode from comparison operator.
835         Use new mips_output_conditional_branch interface.
836         (branch_fp_inverted): Rename to...
837         (*branch_fp_inverted): ...this and update as for *branch_fp.
838         (*branch_zero<mode>): Rename to...
839         (*branch_order<mode>): ...this.  Remove mode from comparison operator.
840         Use mips_output_order_conditional_branch.  Only accept ordered
841         comparisons.  
842         (*branch_zero<mode>_inverted): Rename to...
843         (*branch_order<mode>_inverted): ...this and update as for
844         *branch_order<mode>.
845         (*branch_equality<mode>): Accept zero as the second operand to
846         the equality operator.  Use the new mips_output_conditional_branch
847         interface.
848         (*branch_equality<mode>_inverted): Likewise.
849         (condjump): New expander.
850         * config/mips/mips-dsp.md (mips_bposge): Remove mode from comparison
851         operator.
852         * config/mips/mips-ps-3d.md (bc1any4t, bc1any4f): Likewise.
853         (bc1any2t, bc1any2f): Likewise.
854         (single_cc): New expander.
855         (*branch_upper_lower, *branch_upper_lower_inverted): New patterns.
856
857 2006-03-09  Richard Sandiford  <richard@codesourcery.com>
858
859         * doc/md.texi: Update documentation of MIPS constraints.
860         * config/mips/constraints.md: New file.
861         * config/mips/mips.md: Include it.
862         * config/mips/mips.c (mips_char_to_class): Delete.
863         (override_options): Don't initialize mips_char_to_class.
864         * config/mips/mips.h (mips_char_to_class): Delete.
865         (REG_CLASS_FROM_LETTER): Delete.
866         (CONST_OK_FOR_LETTER_P): Delete.
867         (CONST_DOUBLE_OK_FOR_LETTER_P): Delete.
868         (EXTRA_CONSTRAINT_Y): Delete.
869         (EXTRA_CONSTRAINT_STR): Delete.
870         (CONSTRAINT_LEN): Delete.
871         (EXTRA_MEMORY_CONSTRAINT): Delete.
872
873 2006-03-09  Diego Novillo  <dnovillo@redhat.com>
874
875         * tree-cfg.c (move_block_to_fn): Remove the statements from the
876         original fn's eh regions.
877
878 2006-03-09  Eric Botcazou  <ebotcazou@adacore.com>
879
880         * fold-const.c (build_range_check): Make sure to use a valid type to
881         apply the "(c>=low) && (c<=high) into (c-low>=0) && (c-low<=high-low)"
882         transformation.
883
884         (range_predecessor): New static function.
885         (range_successor): Likewise.
886         (merge_ranges): Use them to compute predecessors and successors of
887         range bounds.
888
889 2006-03-09  Roger Sayle  <roger@eyesopen.com>
890
891         PR middle-end/26561
892         * fold-const.c (fold_div_compare): When optimizing X/C1 op C2 as
893         X op C3, consider whether C3 overflows towards +Inf or -Inf.
894
895 2006-03-08  DJ Delorie  <dj@redhat.com>
896
897         * config/m32c/addsub.md (addqi3): Disparage a0/a1.
898         (addpsi3): Expand to include memory operands.  Remove
899         reload-specific splits.
900         * config/m32c/bitops.md (bset_qi, bset_hi, bclr_qi): New.
901         (andqi3_16, andhi3_16, iorqi3_16, iorhi3_16): New.
902         (andqi3_24, andhi3_24, iorqi3_24, iorhi3_24): New.
903         (andqi3, andhi3, iorqi3, iorhi3): Convert to expanders.
904         (shift1_qi, shift1_hi, insv): New.
905         * config/m32c/cond.md (cbranchqi4, cbranchhi4): Remove.
906         (cbranch<mode>4, stzx_16, stzx_24_<mode>, stzx_reversed,
907         cmp<mode>, b<code>, s<code>, s<code>_24, movqicc, movhicc,
908         cond_to_int): New.
909         * config/m32c/m32c-protos.h: Update as needed.
910         * config/m32c/m32c.c (m32c_reg_class_from_constraint): Don't
911         default the Rcr, Rcl, Raw, and Ral constraints.  Add Ra0 and Ra1.
912         Fail for unrecognized R* constraints.
913         (m32c_cannot_change_mode_class): Be more picky about pseudos.
914         (m32c_const_ok_for_constraint_p): Add Imb, Imw, and I00.
915         (m32c_extra_constraint_p2): Allow (mem (plus (plus fb int) int)).
916         Add Sp constraint.
917         (m32c_init_libfuncs): New.
918         (m32c_legitimate_address_p): Add debug wrapper.
919         (m32c_rtx_costs): New.
920         (m32c_address_cost): New.
921         (conversions): Add 'B' prefix.
922         (m32c_print_operand): 'h' and 'H' pick lower and upper halves of
923         operands, or word regnames for QI operands.  'B' prints bit
924         position.
925         (m32c_expand_setmemhi): New.
926         (m32c_expand_movmemhi): New.
927         (m32c_expand_movstr): New.
928         (m32c_expand_cmpstr): New.
929         (m32c_prepare_shift): Shift counts are limited to 16 bits at a time.
930         (m32c_expand_neg_mulpsi3): Handle non-ints.
931         (m32c_cmp_flg_0): New.
932         (m32c_expand_movcc): New.
933         (m32c_expand_insv): New.
934         (m32c_scc_pattern): New.
935         * config/m32c/m32c.h (reg classes): Add AO_REGS and A1_REGS.  Take
936         a0/a1 out of SIregs.
937         (STORE_FLAG_VALUE): New.
938         * config/m32c/m32c.md: Add unspecs for string moves.  Define various mode and
939         code macros.
940         (no_insn): New.
941         * config/m32c/mov.md: Make constraints more liberal.
942         (zero_extendqihi2): Optimize r0/r1 case.
943         * config/m32c/muldiv.md (mulpsi3): Check for intvals.
944         * config/m32c/predicates.md (m32c_any_operand): New.
945         (m32c_nonimmediate_operand): New.
946         (m32c_hl_operand): New.
947         (m32c_r3_operand): New.
948         (ap_operand): New.
949         (ma_operand): New.
950         (memsym_operand): New.
951         (memimmed_operand): New.
952         (a_qi_operand): New.
953         (m32c_eqne_operator): New.
954         (m32c_1bit8_operand): New.
955         (m32c_1bit16_operand): New.
956         (m32c_1mask8_operand): New.
957         (m32c_1mask16_operand): New.
958         * config/m32c/blkmov.md: New file.
959         * config/m32c/t-m32c (MD_FILES): Add blkmov.
960
961 2006-03-08  Andreas Tobler  <a.tobler@schweiz.ch>
962
963         * dwarf2out.c (expand_builtin_dwarf_sp_column): Make dwarf_regnum
964         unsigned to fix signed/unsigned comparison issue in
965         DWARF2_FRAME_REG_OUT.
966         (expand_builtin_init_dwarf_reg_sizes): Make i unsigned to fix signed/
967         unsigned comparison issue in DWARF2_FRAME_REG_OUT.
968
969         * tree-ssa-operands.c (finalize_ssa_def_ops): Move the declaration
970         of ptr into the ENABLE_CHECKING section.
971
972 2006-03-08  Jeff Law  <law@redhat.com>
973
974         * tree-vrp.c (infer_value_range): Only count pointer uses
975         and dereferences if -fdelete-null-pointer-checks is enabled.
976
977         * tree-vrp.c (find_assert_locations): Infer value ranges for
978         single use pointers, but do not create ASSERT_EXPRs for them.
979         When a non-null range is inferred for a pointer, backwards
980         propagate that range to other equivalent pointers through the
981         use-def chain.
982
983 2006-03-08  Paolo Bonzini  <bonzini@gnu.org>
984
985         PR bootstrap/26500
986         * Makefile.in (dvi, html, install-info): Invoke the corresponding
987         language hook targets.
988         * ada/Make-lang.in, cp/Make-lang.in, objc/Make-lang.in,
989         objcp/Make-lang.in: Create stub rules for dvi, html, install-info
990         if language hook targets were missing.
991
992 2006-03-07  Zdenek Dvorak <dvorakz@suse.cz>
993
994         * tree-ssa-opfinalize.h: Removed.
995         * Makefile.in (tree-ssa-operands.o): Remove tree-ssa-opfinalize.h
996         dependency.
997         * tree-ssa-operands.c: Do not include tree-ssa-opfinalize.h.
998         (ALLOC_OPTYPE, APPEND_OP_AFTER, MOVE_HEAD_AFTER, MOVE_HEAD_TO_FREELIST,
999         INITIALIZE_USE, add_def_op, add_use_op, add_vuse_op, add_maydef_op,
1000         add_mustdef_op, finalize_ssa_def_ops, finalize_ssa_use_ops,
1001         finalize_ssa_v_may_def_ops, finalize_ssa_vuse_ops,
1002         finalize_ssa_v_must_def_ops): New.
1003
1004 2006-03-07  Kenneth Zadeck <zadeck@naturalbridge.com>
1005
1006         * df-scan.c: (df_bb_refs_record): Fix obvious typo with wrong
1007         block as parameter.
1008
1009 2006-03-07  Geoffrey Keating  <geoffk@apple.com>
1010
1011         * varasm.c (assemble_end_function): Say that 'fnname' is unused.
1012
1013         * config/i386/i386.c (ix86_delegitimize_address): Handle Darwin
1014         addresses with offsets; reorganize.
1015
1016         * dwarf2out.c (DWARF2_FRAME_REG_OUT): Move up in file.
1017         (expand_builtin_dwarf_sp_column): Call DWARF2_FRAME_REG_OUT.
1018         (expand_builtin_init_dwarf_reg_sizes): Likewise.
1019
1020 2006-03-08  David Billinghurst <David.Billinghurst@riotinto.com>
1021
1022         PR target/26588
1023         * config/i386/cygwin.h (GOMP_SELF_SPECS): Define.
1024
1025 2006-03-08  Ben Elliston  <bje@au.ibm.com>
1026
1027         * config/fp-bit.h (CMPtype): Typedef to a word mode integer.
1028
1029 2006-03-07  Aldy Hernandez  <aldyh@redhat.com>
1030
1031         PR gomp/26238
1032         * doc/passes.texi (Tree-SSA passes): Document omp lowering and
1033         expansion.
1034
1035 2006-03-07  Richard Guenther  <rguenther@suse.de>
1036
1037         PR tree-optimization/26587
1038         * tree-ssa-structalias.c (handle_ptr_arith): Handle MINUS_EXPR.
1039
1040 2006-03-07  Richard Sandiford  <richard@codesourcery.com>
1041
1042         * varasm.c (assemble_variable): Fix setting of DECL_IN_TEXT_SECTION.
1043
1044 2006-03-07  Richard Sandiford  <richard@codesourcery.com>
1045
1046         * hooks.c (hook_bool_mode_rtx_true): New function.
1047         * hooks.h (hook_bool_mode_rtx_true): Declare.
1048         * toplev.c (compile_file): Call output_shared_constant_pool.
1049         * varasm.c (shared_constant_pool): New variable.
1050         (assemble_start_function, assemble_end_function): Remove arguments
1051         from call to output_constant_pool.
1052         (create_constant_pool): New function, split out from...
1053         (init_varasm_status): ...here.
1054         (force_const_mem): Choose between the shared and per-function constant
1055         pools.  Set current_function_uses_const_pool when reusing old entries
1056         as well as when creating new ones.
1057         (mark_constant): Ignore data argument.
1058         (mark_constants): Remove pool argument.
1059         (mark_constant_pool): Likewise.  Use current_function_uses_const_pool
1060         to decide whether the function uses a constant pool.
1061         (output_constant_pool_contents): New function, split out from...
1062         (output_constant_pool): ...here.
1063         (output_shared_constant_pool): New function.
1064         (init_varasm_once): Initialize shared_constant_pool.
1065         * output.h (output_constant_pool): Delete.
1066         (output_shared_constant_pool): Declare.
1067         * config/s390/s390-protos.h (s390_output_constant_pool): Delete.
1068         * config/i386/i386.c (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Override.
1069
1070 2006-03-06  Nick Clifton  <nickc@redhat.com>
1071
1072         * config/m32r/m32r.h (OPTIMIZATION_OPTIONS): Remove reference to
1073         flag_strength_reduce.
1074
1075 2006-03-06  Ben Elliston  <bje@au.ibm.com>
1076
1077         * config.gcc: Add t-dfprules to $tmake_file for i*86-*-linux* and
1078         x86_64-*-linux* configurations.
1079
1080         * config/dfp-bit.h (CMPtype): Typedef to a word mode integer.
1081         (LIBGCC2_WORDS_BIG_ENDIAN): Define.
1082
1083 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1084
1085         * tree-ssa-threadupdate.c (rediscover_loops_after_threading):
1086         Remove.
1087         * basic-block.h: Remove the extern for
1088         rediscover_loops_after_threading.
1089
1090         * cfgloop.c (cancel_loop): Make it static.
1091         * cfgloop.h: Remove the prototype for cancel_loop.
1092
1093         * flow.c (recompute_reg_usage): Make it static.
1094         * rtl.h: Remove the prototype for recompute_reg_usage.
1095
1096         * function.c (use_return_register): Make it static.
1097         * function.h: Remove the prototype.
1098
1099 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1100
1101         * recog.c (volatile_mem_p, validate_change_maybe_volatile):
1102         Remove.
1103         * recog.h: Remove the prototype for
1104         validate_change_maybe_volatile.
1105
1106 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1107
1108         * rtlanal.c (replace_reg): Remove.
1109         * rtl.h: Remove the prototype for replace_reg.
1110
1111 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1112
1113         * regclass.c (reg_scan_update): Remove.
1114         (reg_scan_mark_refs): Remove the last argument.
1115         * rtl.h: Remove the prototype for reg_scan_update.
1116
1117 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1118
1119         * builtins.c, c-pragma.h, c-typeck.c, cgraph.c, cgraphunit.c,
1120         combine.c, common.opt, config/dfp-bit.c, config/i386/i386.c,
1121         config/m68k/m68k.c, config/m68k/m68k.md, config/mt/mt.c,
1122         config/mt/mt.h, config/s390/s390.md, df-core.c, df-problems.c,
1123         df-scan.c, df.h, diagnostic.c, expr.c, function.h, gimplify.c,
1124         loop-invariant.c, omp-low.c, opts.c, passes.c,
1125         rtl-factoring.c, rtlanal.c, struct-equiv.c, tree-cfgcleanup.c,
1126         tree-ssa-loop-niter.c, tree-ssa-loop-prefetch.c,
1127         tree-ssa-structalias.c, tree-ssa-threadedge.c,
1128         tree-ssa-threadupdate.c, tree-vect-patterns.c,
1129         tree-vect-transform.c, tree-vectorizer.h, tree-vrp.c,
1130         unwind-dw2.c: Fix comment typos.  Follow spelling conventions.
1131
1132 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1133
1134         * dwarf2out.c (dwarf2out_add_library_unit_info): Remove.
1135         * dwarf2out.h: Remove the prototype for
1136         dwarf2out_add_library_unit_info.
1137
1138 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1139
1140         * tree.c (add_var_to_bind_expr): Remove.
1141         * tree.h: Remove the prototype for add_var_to_bind_expr.
1142
1143 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1144
1145         * regclass.c (n_non_fixed_regs): Remove.
1146         (init_reg_sets_1, globalize_reg): Remove all uses of
1147         n_non_fixed_regs.
1148         * hard-reg-set.h: Remove the extern for n_non_fixed_regs.
1149
1150 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1151
1152         * rtlanal.c (insns_safe_to_move_p): Remove.
1153         * rtl.h: Remove the prototype for insns_safe_to_move_p.
1154
1155 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1156
1157         * expmed.c (expand_mult_add): Remove.
1158         * expr.h: Remove the prototype for expand_mult_add.
1159
1160 2006-03-04  Jakub Jelinek  <jakub@redhat.com>
1161
1162         * unwind-dw2.h (_Unwind_FrameState): Add REG_SAVED_VAL_OFFSET
1163         and REG_SAVED_VAL_EXP constants.
1164         * unwind-dw2.c (struct _Unwind_Context): Add by_value array.
1165         (_Unwind_GetGR, _Unwind_SetGR, _Unwind_GetGRPtr, _Unwind_SetGRPtr):
1166         Handle regs stored by value.
1167         (_Unwind_SetGRValue, _Unwind_GRByValue): New functions.
1168         (execute_cfa_program): Handle DW_CFA_val_offset,
1169         DW_CFA_val_offset_sf and DW_CFA_val_expression.
1170         (uw_update_context_1): Handle REG_SAVED_REG with regs stored by
1171         value specially.  Handle REG_SAVED_VAL_OFFSET and REG_SAVED_VAL_EXP.
1172         (uw_install_context_1): Handle target regs stored by value.
1173
1174 2006-03-03  Daniel Berlin  <dberlin@dberlin.org>
1175
1176         * tree-sra.c (tree_sra): Return todoflags;
1177         (generate_one_element): Set TODO_update_smt_usage if needed.
1178         (pass_sra): Remove TODO_update_smt_usage.
1179         * tree-ssa-forwprop.c (forward_propagate_addr_expr): Add some
1180         parameter.
1181         (tree_ssa_forward_propagate_single_use_vars): Return
1182         TODO_update_smt_usage if we need to update SMT usage.
1183         (pass_forwprop): Remove TODO_update_smt_usage.
1184         
1185 2006-03-03  Diego Novillo  <dnovillo@redhat.com>
1186
1187         * tree-ssa-operands.c: Tidy whitespace.  Fix spelling.
1188         (correct_use_link): Remove reference to get_stmt_operands.
1189         (update_stmt_operands): Likewise.
1190         (get_modify_expr_operands): New function factored out of
1191         parse_ssa_operands and get_expr_operands.
1192         Try to create V_MUST_DEFs for LHS by default.
1193         (get_expr_operands) <case MODIFY_EXPR>: Call
1194         get_modify_expr_operands.
1195         <case ARRAY_RANGE_REF>: Handle together with ARRAY_REF.
1196         <case BIT_FIELD_REF>: Clear opf_kill_def from FLAGS.
1197         (parse_ssa_operands) <case MODIFY_EXPR>: Call
1198         get_modify_expr_operands.
1199
1200 2006-03-03  Kazu Hirata  <kazu@codesourcery.com>
1201
1202         * tree-dfa.c (referenced_var_lookup_if_exists): Remove.
1203         * tree-flow.h: Remove the prototype for
1204         referenced_var_lookup_if_exists.
1205
1206 2006-03-03  Steve Ellcey  <sje@cup.hp.com>
1207
1208         PR rtl-optimization/26345
1209         PR target/19061
1210         * config/ia64/predicates.md (basereg_operand): Don't look in subregs.
1211
1212 2006-03-03  Roger Sayle  <roger@eyesopen.com>
1213
1214         PR tree-optimization/26524
1215         * tree-scalar-evolution.c (interpret_rhs_modify_expr): Use
1216         fold_convert to create a constant of the appropriate type.
1217
1218 2006-03-03  Richard Sandiford  <richard@codesourcery.com>
1219
1220         * doc/tm.texi: Refer to SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1221         SYMBOL_REF_IN_BLOCK_P.
1222         * doc/rtl.texi: Likewise.  Refer to SYMBOL_FLAG_HAS_BLOCK_INFO instead
1223         of SYMBOL_FLAG_IN_BLOCK.
1224         * gengtype.c (adjust_field_rtx_def): Use SYMBOL_REF_HAS_BLOCK_INFO_P
1225         instead of SYMBOL_REF_IN_BLOCK_P.
1226         * explow.c (use_anchored_address): Likewise.
1227         * rtl.c (rtx_size): Likewise.
1228         * varasm.c (create_block_symbol): Set SYMBOL_FLAG_HAS_BLOCK_INFO
1229         instead of SYMBOL_FLAG_IN_BLOCK.
1230         (make_decl_rtl): Use SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1231         SYMBOL_REF_IN_BLOCK_P.
1232         (assemble_variable): Likewise.
1233         (output_constant_def_contents): Likewise.
1234         (output_constant_pool): Likewise.
1235         (default_encode_section_info): Preserve SYMBOL_FLAG_HAS_BLOCK_INFO
1236         instead of SYMBOL_FLAG_IN_BLOCK.
1237         * rtl.h (block_symbol): Refer to SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1238         SYMBOL_REF_IN_BLOCK_P.
1239         (SYMBOL_REF_BLOCK): Likewise.
1240         (SYMBOL_REF_OFFSET): Likewise.
1241         (BLOCK_SYMBOL_CHECK): Use SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1242         SYMBOL_REF_IN_BLOCK_P.
1243         (SYMBOL_FLAG_IN_BLOCK): Replace with...
1244         (SYMBOL_FLAG_HAS_BLOCK_INFO): ...this.
1245         (SYMBOL_REF_IN_BLOCK_P): Replace with...
1246         (SYMBOL_REF_HAS_BLOCK_INFO_P): ...this.
1247
1248 2006-03-03  Jakub Jelinek  <jakub@redhat.com>
1249
1250         * config/arm/unwind-arm.h (_Unwind_GetIPInfo): Fix pasto.
1251
1252 2006-03-02  Roger Sayle  <roger@eyesopen.com>
1253
1254         * simplify-rtx.c (simplify_unary_operation): When simplifying
1255         (neg (lt X 0)) into (ashiftrt X C) or (lshiftrt X C), make sure
1256         that we perform the right shift in the appropriate mode, and
1257         then extend or truncate the result to requested mode.
1258
1259 2006-03-03  Zdenek Dvorak <dvorakz@suse.cz>
1260
1261         * gengtype.c (main): Handle double_int type.
1262         * tree.h (struct tree_int_cst): Make type of int_cst double_int.
1263         * double-int.c: New file.
1264         * double-int.h: New file.
1265         * system.h: Include doubleint.h.
1266         * Makefile.in (SYSTEM_H): Include double-int.h.
1267         (double-int.o): Add.
1268
1269 2006-03-03  Joseph S. Myers  <joseph@codesourcery.com>
1270
1271         PR bootstrap/26478
1272         * Makefile.in (stmp-int-hdrs): Remove include/unwind.h before
1273         copying over it.
1274
1275 2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>
1276
1277         * tree-vrp.c (remove_range_assertions): Do not update statements
1278         unnecessarily.
1279
1280 2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>
1281
1282         * cse.c (rest_of_handle_cse): Do not pass CLEANUP_PRE_LOOP to cfg
1283         cleanup.
1284         * gcse.c (rest_of_handle_gcse): Ditto.
1285         * except.c (gate_handle_eh): Ditto.
1286         * cfgcleanup.c (rest_of_handle_jump2): Ditto.
1287         * basic-block.h (CLEANUP_PRE_LOOP): Remove.
1288
1289 2006-03-02  Eric Christopher  <echristo@apple.com>
1290
1291         * config/i386/i386.c (machopic_output_stub): Add indirection to
1292         jump.
1293
1294 2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>
1295
1296         * loop.c: Removed.
1297
1298 2006-03-02  David S. Miller  <davem@sunset.davemloft.net>
1299
1300         Sun Niagara specific optimizations.
1301         * config.gcc: Recognize niagara as target.
1302         * config/sparc/sparc.h (SPARC_RELAXED_ORDERING): Mention Niagara.
1303         (TARGET_CPU_niagara): Define.
1304         (CPP_CPU64_DEFAULT_SPEC): Define __sparc_v9__ for Niagara.
1305         (ASM_CPU64_DEFAULT_SPEC): Pass -Av9b for Niagara.
1306         (CPP_CPU_SPEC): Handle -mcpu=niagara.
1307         (ASM_CPU_SPEC): Likewise.
1308         (PROCESSOR_NIAGARA): New enum entry.
1309         (REGISTER_MOVE_COST): Handle Niagara.
1310         (BRANCH_COST, PREFETCH_BLOCK, SIMULTANEOUS_PREFETCHES): Likewise.
1311         * config/sparc/sparc.c (niagara_costs): New processor_costs entry.
1312         (sparc_override_options): Recognize "niagara", set appropriate
1313         default MASK_* values for it, and align functions to 32-bytes
1314         by default just like ULTRASPARC/ULTRASPARC3.
1315         (sparc_initialize_trampoline): Handle niagara like ultrasparc.
1316         (sparc64_initialize_trampoline): Likewise.
1317         (sparc_use_sched_lookahead): Use zero for niagara.
1318         (sparc_issue_rate): Use one for niagara.
1319         * config/sparc/niagara.md: New file.
1320         * config/sparc/sparc.md: Include it.
1321         * config/sparc/sol2-bi.h (CPP_CPU64_DEFAULT_SPEC,
1322         ASM_CPU32_DEFAULT_SPEC, ASM_CPU64_DEFAULT_SPEC): Set appropriately
1323         when default cpu is niagara.
1324         (CPP_CPU_SPEC): Handle -mcpu=niagara.
1325         (ASM_CPU_SPEC): Likewise.
1326         * config/sparc/sol2.h (ASM_CPU_DEFAULT_SPEC): Set appropriately
1327         when default cpu is niagara.
1328         (ASM_CPU_SPEC): Handle -mcpu=niagara.
1329         * config/sparc/linux64.h: Handle a default of TARGET_CPU_niagara
1330         just like v9/ultrasparc/ultrasparc3.
1331         * doc/invoke.texi: Add documentation for "niagara" and improve
1332         existing documentation for ultrasparc variants.
1333
1334 2006-03-02  Diego Novillo  <dnovillo@redhat.com>
1335
1336         * tree-ssa-operands.c (update_stmt_operands): Update documentation.
1337
1338 2006-03-02  Richard Sandiford  <richard@codesourcery.com>
1339
1340         * doc/tm.texi (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Document.
1341         (ASM_OUTPUT_BSS): Describe the two ways of handling global BSS,
1342         and say that only one is needed.
1343         * doc/rtl.texi (SYMBOL_REF_BLOCK): Say that the block can be null.
1344         * target.h (have_switchable_bss_sections): New hook.
1345         * explow.c (use_anchored_address): Check that the symbol is in a block.
1346         * varasm.c (tls_comm_section, comm_section, lcomm_section)
1347         (bss_noswitch_section): New variables.
1348         (get_unnamed_section): Add SECTION_UNNAMED to the flags.
1349         (get_noswitch_section): New function.
1350         (get_block_for_section): Allow SECT to be null.
1351         (unlikely_text_section_p): Use SECTION_STYLE.
1352         (bss_initializer_p): New function.
1353         (get_variable_section): Move earlier in file.  Take a new argument,
1354         prefer_noswitch_p.  Move bss checks from assemble_variable to here.
1355         Return one of the new *_sections in such cases.
1356         (get_block_for_decl): New function, extracting some logic from
1357         use_blocks_for_decl_p.
1358         (change_symbol_section): Remove in favor of...
1359         (change_symbol_block): ...this new function.
1360         (use_blocks_for_decl_p): Remove checks now performed by
1361         get_block_for_decl.
1362         (make_decl_rtl): Use change_symbol_block and get_block_for_decl.
1363         (ASM_EMIT_LOCAL, ASM_EMIT_BSS, ASM_EMIT_COMMON): Delete in favor of...
1364         (emit_local, emit_bss, emit_common): ...these new functions.
1365         Return true if the alignment was honored.
1366         (emit_tls_common): New function.
1367         (asm_emit_uninitialised): Delete.
1368         (assemble_variable_noswitch): New function, split out from...
1369         (assemble_variable): ...here.  Don't make decisions about common
1370         variables here.  Globalize all public decls that go into non-common
1371         sections.  Check whether SYMBOL_REF_BLOCK is null.
1372         (output_constant_def_contents): Check whether SYMBOL_REF_BLOCK is null.
1373         (output_constant_pool): Likewise.
1374         (init_varasm_once): Initialize the new section variables.
1375         (have_global_bss_p): New function.
1376         (categorize_decl_for_section): Use bss_initializer_p.
1377         (switch_to_section): Use SECTION_STYLE.  Abort for SECTION_NOSWITCH.
1378         (place_block_symbol): Assert that the symbol must be in a block.
1379         * target-def.h (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): New macro.
1380         (TARGET_INITIALIZER): Include it.
1381         * rtl.h (SYMBOL_REF_BLOCK): Document the null alternative.
1382         * output.h (SECTION_STYLE_MASK, SECTION_COMMON): New macros.
1383         (SECTION_MACH_DEP): Bump by two.
1384         (SECTION_UNNAMED, SECTION_NOSWITCH): New macros.
1385         (unnamed_section): Mention SECTION_UNNAMED in comment.
1386         (named_section): Likewise SECTION_NAMED.
1387         (noswitch_section_callback): New type.
1388         (noswitch_section): New structure.
1389         (section): Add a noswitch_section alternative.
1390         (SECTION_STYLE): New macro.
1391         (tls_comm_section, comm_section, lcomm_section): Declare.
1392         (bss_noswitch_section, have_global_bss_p): Declare.
1393         * config/elfos.h (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Override.
1394         * config/iq2000/iq2000.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS):
1395         Override.
1396         * config/v850/v850.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Override.
1397         * config/stormy16/stormy16.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS):
1398         Override.
1399
1400 2006-03-02  Daniel Berlin <dberlin@dberlin.org>
1401
1402         * gcc/tree-vrp.c (execute_vrp): Return value.
1403         * gcc/regrename.c (rest_of_handle_regrename): Ditto.
1404         * gcc/tree-into-ssa.c (rewrite_into_ssa): Ditto.
1405         * gcc/tree-complex.c (tree_lower_complex): Ditto.
1406         (tree_lower_complex_O0): Ditto.
1407         * gcc/tracer.c (rest_of_handle_tracer): Ditto.
1408         * gcc/postreload-gcse.c (rest_of_handle_gcse2): Ditto.
1409         * gcc/postreload.c (rest_of_handle_postreload): Ditto.
1410         * gcc/tree-tailcall.c (execute_tail_recursion): Ditto.
1411         (execute_tail_calls): Ditto.
1412         * gcc/tree-ssa-loop-ch.c (copy_loop_headers): Ditto.
1413         * gcc/tree.h (init_function_for_compilation): Ditto.
1414         * gcc/ipa-cp.c (ipcp_driver): Ditto.
1415         * gcc/tree-scalar-evolution.c (scev_const_prop): Ditto.
1416         * gcc/tree-scalar-evolution.h (scev_const_prop): Ditto.
1417         * gcc/final.c (compute_alignments): Ditto.
1418         (rest_of_handle_final): Ditto.
1419         (rest_of_handle_shorten_branches): Ditto.
1420         (rest_of_clean_state): Ditto.
1421         * gcc/omp-low.c (execute_expand_omp): Ditto.
1422         (execute_lower_omp): Ditto.
1423         * gcc/tree-ssa-dse.c (tree_ssa_dse): Ditto.
1424         * gcc/ipa-reference.c (static_execute): Ditto.
1425         * gcc/tree-ssa-uncprop.c (tree_ssa_uncprop): Ditto.
1426         * gcc/reorg.c (rest_of_handle_delay_slots): Ditto.
1427         (rest_of_handle_machine_reorg): Ditto.
1428         * gcc/cgraphunit.c (rebuild_cgraph_edges): Ditto.
1429         * gcc/flow.c (recompute_reg_usage): Ditto.
1430         (rest_of_handle_remove_death_notes): Ditto.
1431         (rest_of_handle_life): Ditto.
1432         (rest_of_handle_flow2): Ditto.
1433         * gcc/tree-ssa-copyrename.c (rename_ssa_copies): Ditto.
1434         * gcc/tree-ssa-ccp.c (do_ssa_ccp): Ditto.
1435         (do_ssa_store_ccp): Ditto.
1436         (execute_fold_all_builtins): Ditto.
1437         * gcc/mode-switching.c (rest_of_handle_mode_switching): Ditto.
1438         * gcc/modulo-sched.c (rest_of_handle_sms): Ditto.
1439         * gcc/ipa-pure-const.c (static_execute): Ditto.
1440         * gcc/cse.c (rest_of_handle_cse): Ditto.
1441         (rest_of_handle_cse2): Ditto.
1442         * gcc/web.c (rest_of_handle_web): Ditto.
1443         * gcc/tree-stdarg.c (execute_optimize_stdarg): Ditto.
1444         * gcc/tree-ssa-math-opts.c (execute_cse_reciprocals): Ditto.
1445         * gcc/tree-ssa-dom.c (tree_ssa_dominator_optimize): Ditto.
1446         * gcc/tree-nrv.c (tree_nrv): Ditto.
1447         (execute_return_slot_opt): Ditto.
1448         * gcc/tree-ssa-alias.c (compute_may_aliases): Ditto.
1449         (create_structure_vars): Ditto.
1450         * gcc/loop-init.c (rtl_loop_init): Ditto.
1451         (rtl_loop_done): Ditto.
1452         (rtl_move_loop_invariants): Ditto.
1453         (rtl_unswitch): Ditto.
1454         (rtl_unroll_and_peel_loops): Ditto.
1455         (rtl_doloop): Ditto.
1456         * gcc/gimple-low.c (lower_function_body): Ditto.
1457         (mark_used_blocks): Ditto.
1458         * gcc/tree-ssa-sink.c (execute_sink_code): Ditto.
1459         * gcc/ipa-inline.c (cgraph_decide_inlining): Ditto.
1460         (cgraph_early_inlining): Ditto.
1461         * gcc/global.c (rest_of_handle_global_alloc): Ditto.
1462         * gcc/jump.c (cleanup_barriers): Ditto.
1463         (purge_line_number_notes): Ditto.
1464         * gcc/ifcvt.c (rest_of_handle_if_conversion): Ditto.
1465         (rest_of_handle_if_after_reload): Ditto.
1466         * gcc/tree-ssa-loop.c (tree_ssa_loop_init): Ditto.
1467         (tree_ssa_loop_im): Ditto.
1468         (tree_ssa_loop_unswitch): Ditto.
1469         (tree_vectorize): Ditto.
1470         (tree_linear_transform): Ditto.
1471         (tree_ssa_loop_ivcanon): Ditto.
1472         (tree_ssa_empty_loop): Ditto.
1473         (tree_ssa_loop_bounds): Ditto.
1474         (tree_complete_unroll): Ditto.
1475         (tree_ssa_loop_prefetch): Ditto.
1476         (tree_ssa_loop_ivopts): Ditto.
1477         (tree_ssa_loop_done): Ditto.
1478         * gcc/predict.c (tree_estimate_probability): Ditto.
1479         * gcc/recog.c (split_all_insns_noflow): Ditto.
1480         (rest_of_handle_peephole2): Ditto.
1481         (rest_of_handle_split_all_insns): Ditto.
1482         * gcc/tree-eh.c (lower_eh_constructs): Ditto.
1483         * gcc/regmove.c (rest_of_handle_regmove): Ditto.
1484         (rest_of_handle_stack_adjustments): Ditto.
1485         * gcc/local-alloc.c (rest_of_handle_local_alloc): Ditto.
1486         * gcc/function.c (instantiate_virtual_regs): Ditto.
1487         (init_function_for_compilation): Ditto.
1488         (rest_of_handle_check_leaf_regs): Ditto.
1489         * gcc/gcse.c (rest_of_handle_jump_bypass): Ditto.
1490         (rest_of_handle_gcse): Ditto.
1491         * gcc/ipa-type-escape.c (type_escape_execute): Ditto.
1492         * gcc/alias.c (rest_of_handle_cfg): Ditto.
1493         * gcc/tree-if-conv.c (main_tree_if_conversion): Ditto.
1494         * gcc/profile.c (rest_of_handle_branch_prob): Ditto.
1495         * gcc/tree-ssa-phiopt.c (tree_ssa_phiopt): Ditto.
1496         * gcc/rtl-factoring.c (rest_of_rtl_seqabstr): Ditto.
1497         * gcc/bt-load.c (rest_of_handle_branch_target_load_optimize): Ditto
1498         * gcc/tree-dfa.c (find_referenced_vars): Ditto.
1499         * gcc/except.c (set_nothrow_function_flags): Ditto.
1500         (convert_to_eh_region_ranges): Ditto.
1501         (rest_of_handle_eh): Ditto.
1502         * gcc/emit-rtl.c (unshare_all_rtl): Ditto.
1503         (remove_unnecessary_notes): Ditto.
1504         * gcc/except.h (set_nothrow_function_flags): Ditto.
1505         (convert_to_eh_region_ranges): Ditto.
1506         * gcc/cfgexpand.c (tree_expand_cfg): Ditto.
1507         * gcc/tree-cfgcleanup.c (merge_phi_nodes): Ditto.
1508         * gcc/tree-ssa-pre.c (do_pre): Ditto.
1509         (execute_fre): Ditto.
1510         * gcc/cfgcleanup.c (rest_of_handle_jump): Ditto.
1511         (rest_of_handle_jump2): Ditto.
1512         * gcc/tree-sra.c (tree_sra): Ditto.
1513         * gcc/tree-mudflap.c (execute_mudflap_function_ops): Ditto.
1514         (execute_mudflap_function_decls): Ditto.
1515         * gcc/tree-ssa-copy.c (do_copy_prop): Ditto.
1516         (do_store_copy_prop): Ditto.
1517         * gcc/ipa-prop.h (ipcp_driver): Ditto.
1518         * gcc/cfglayout.c (insn_locators_initialize): Ditto.
1519         * gcc/tree-ssa-forwprop.c
1520         (tree_ssa_forward_propagate_single_use_vars): Ditto.
1521         * gcc/cfglayout.h (insn_locators_initialize): Ditto.
1522         * gcc/tree-ssa-dce.c (tree_ssa_dce): Ditto.
1523         * gcc/tree-ssa.c (execute_early_warn_uninitialized): Ditto.
1524         (execute_late_warn_uninitialized): Ditto.
1525         * gcc/rtl.h (cleanup_barriers): Ditto.
1526         (split_all_insns_noflow): Ditto.
1527         (purge_line_number_notes): Ditto.
1528         (unshare_all_rtl): Ditto.
1529         (remove_unnecessary_notes): Ditto.
1530         (recompute_reg_usage): Ditto.
1531         (variable_tracking_main): Ditto.
1532         * gcc/integrate.c (emit_initial_value_sets): Ditto.
1533         * gcc/integrate.h (emit_initial_value_sets): Ditto.
1534         * gcc/tree-optimize.c (execute_free_datastructures): Ditto
1535         (execute_free_cfg_annotations): Ditto.
1536         (execute_fixup_cfg): Ditto.
1537         (execute_cleanup_cfg_pre_ipa): Ditto.
1538         (execute_cleanup_cfg_post_optimizing): Ditto.
1539         (execute_init_datastructures): Ditto.
1540         * gcc/tree-object-size.c (compute_object_sizes): Ditto.
1541         * gcc/combine.c (rest_of_handle_combine): Ditto.
1542         * gcc/tree-outof-ssa.c (rewrite_out_of_ssa): Ditto.
1543         * gcc/bb-reorder.c (duplicate_computed_gotos): Ditto.
1544         (rest_of_handle_reorder_blocks): Ditto.
1545         (rest_of_handle_partition_blocks): Ditto.
1546         * gcc/var-tracking.c (variable_tracking_main): Ditto.
1547         * gcc/tree-profile.c (tree_profiling): Ditto.
1548         * gcc/tree-vect-generic.c (expand_vector_operations): Ditto.
1549         * gcc/reg-stack.c (rest_of_handle_stack_regs): Ditto.
1550         * gcc/sched-rgn.c (rest_of_handle_sched): Ditto.
1551         (rest_of_handle_sched2): Ditto.
1552         * gcc/basic-block.h (free_bb_insn): Ditto.
1553         * gcc/tree-ssa-structalias.c (ipa_pta_execute): Ditto.
1554         * gcc/tree-cfg.c (execute_build_cfg): Ditto.
1555         (remove_useless_stmts): Ditto.
1556         (split_critical_edges): Ditto.
1557         (execute_warn_function_return): Ditto.
1558         (execute_warn_function_noreturn): Ditto.
1559         * gcc/tree-ssa-reassoc.c (execute_reassoc): Ditto.
1560         * gcc/cfgrtl.c (free_bb_for_insn): Ditto.
1561         * gcc/passes.c (execute_one_pass): Run additional
1562         todos returned by execute function.
1563         * gcc/tree-pass.h (struct tree_opt_pass): Make execute
1564         return a value.
1565
1566 2006-03-02  Richard Guenther  <rguenther@suse.de>
1567
1568         * tree-ssa-alias.c (find_used_portions): Consider taking
1569         the address as making the variable not write-only.
1570
1571 2006-03-02  Nick Clifton  <nickc@redhat.com>
1572
1573         * config.gcc (default_use_cxa_atexit): Extend the description of
1574         this configure variable.  Set its default value to "yes" for
1575         Linux, NetBSD and ELF targets on the assumption that they will
1576         use C libraries with the __cxa_atexit function.
1577
1578 2006-03-02  Ben Elliston  <bje@au.ibm.com>
1579
1580         * config/rs6000/linux-unwind.h (frob_update_context): Mark `fs'
1581         parameter as unused to suppress a build warning.
1582
1583 2006-03-02  Ben Elliston  <bje@au.ibm.com>
1584
1585         * mklibgcc.in: Depend on config/dfp-bit.h in rules that compile
1586         config/dfp-bit.c.
1587
1588 2006-03-01  Roger Sayle  <roger@eyesopen.com>
1589
1590         PR other/26489
1591         * gthr-posix.h (__gthrw2): Define to take three parameters, the
1592         declared name, the weak reference name, and the typeof name.
1593         (__gthrw): Avoid expanding the declared name suffix.
1594         (__gthrw3): New Tru64 specific macro to simplify the OSF/1 decls.
1595
1596 2006-03-01  Jakub Jelinek  <jakub@redhat.com>
1597
1598         * dwarf2.h (DW_TAG_condition, DW_TAG_shared_type): New constants
1599         from DWARF 3.
1600         (DW_AT_description, DW_AT_binary_scale, DW_AT_decimal_scale,
1601         DW_AT_small, DW_AT_decimal_sign, DW_AT_digit_count,
1602         DW_AT_picture_string, DW_AT_mutable, DW_AT_threads_scaled,
1603         DW_AT_explicit, DW_AT_object_pointer, DW_AT_endianity,
1604         DW_AT_elemental, DW_AT_pure, DW_AT_recursive): New.
1605         (DW_OP_form_tls_address, DW_OP_call_frame_cfa, DW_OP_bit_piece): New.
1606         (DW_ATE_packed_decimal, DW_ATE_numeric_string, DW_ATE_edited,
1607         DW_ATE_signed_fixed, DW_ATE_unsigned_fixed): New.
1608         (DW_DS_unsigned, DW_DS_leading_overpunch, DW_DS_trailing_overpunch,
1609         DW_DS_leading_separate, DW_DS_trailing_separate): New.
1610         (DW_END_default, DW_END_big, DW_END_little): New.
1611         (DW_END_lo_user, DW_END_hi_user): Define.
1612         (DW_LNE_lo_user, DW_LNE_hi_user): Define.
1613         (DW_CFA_val_offset, DW_CFA_val_offset_sf, DW_CFA_val_expression): New.
1614         (DW_LANG_PLI, DW_LANG_ObjC, DW_LANG_ObjC_plus_plus, DW_LANG_UPC,
1615         DW_LANG_D): New.
1616
1617 2006-03-01  Diego Novillo  <dnovillo@redhat.com>
1618
1619         * tree.def (SYMBOL_MEMORY_TAG): Rename from TYPE_MEMORY_TAG.
1620         Update all users.
1621         * tree-pass.h (PROP_smt_usage): Rename from PROP_tmt_usage.
1622         Update all users.
1623         (TODO_update_smt_usage): Rename from TODO_update_tmt_usage.
1624         Update all users.
1625         * tree.h (SMT_USED_ALONE): Rename from TMT_USED_ALONE.
1626         Update all users.
1627         * tree-flow.h (struct var_ann_d): Rename field 'type_mem_tag'
1628         to 'symbol_mem_tag'.
1629         Update all users.
1630         * doc/tree-ssa.texi: Update documentation to reflect TMT->SMT
1631         rename.
1632
1633 2006-03-01  Roger Sayle  <roger@eyesopen.com>
1634
1635         * builtins.c (fold_builtin_copysign): Delete unreachable code.
1636
1637 2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>
1638
1639         PR target/25761
1640         * config/darwin.h (MACHOPIC_JUST_INDIRECT): Check just
1641         MACHO_DYNAMIC_NO_PIC_P.
1642         (MACHOPIC_PURE): Check flag_pic and not MACHO_DYNAMIC_NO_PIC_P.
1643
1644 2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>
1645
1646         PR target/26389
1647         * config/darwin-protos.h (darwin_asm_output_anchor):
1648         Declare.
1649         * config/darwin-sections.def (cstring_section):
1650         Add SECTION_MERGE to the flags.
1651         (literal4_section): Likewise.
1652         (literal8_section): Likewise.
1653         (objc_selector_refs_section): Likewise.
1654         (objc_cls_refs_section): Likewise.
1655         * config/darwin.c (darwin_asm_output_anchor): New
1656         function.
1657         * config/darwin.h (TARGET_ASM_OUTPUT_ANCHOR): Define.
1658
1659 2006-03-01  Daniel Berlin  <dberlin@dberlin.org>
1660
1661         Fix PR tree-optimization/26443
1662         * tree-vrp.c (pass_vrp): Add TODO_update_tmt_usage
1663         to todo and PROP_tmt_usage to properties_destroyed.
1664         * tree-ssa-ccp.c (pass_ccp): Ditto.
1665         (pass_store_ccp): Ditto.
1666         * tree-ssa-dom.c (pass_dominator): Ditto.
1667
1668 2006-03-01  Diego Novillo  <dnovillo@redhat.com>
1669
1670         * tree-ssa-operands.c: Cleanup whitespace.
1671         (get_asm_expr_operands): Move before first invocation.
1672         (get_indirect_ref_operands): Likewise.
1673         (get_tmr_operands): Likewise.
1674         (get_call_expr_operands): Likewise.
1675         (append_def): Likewise.
1676         (append_use): Likewise.
1677         (append_v_may_def): Likewise.
1678         (append_v_must_def): Likewise.
1679         (add_call_clobber_ops): Likewise.
1680         (add_call_read_ops): Likewise.
1681         (add_stmt_operand): Likewise.
1682         (add_virtual_operand): Likewise.
1683         (build_ssa_operands): Likewise.
1684
1685 2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>
1686
1687         PR middle-end/26022
1688         Revert:
1689         PR middle-end/24437
1690         * tree-ssa-ccp.c (fold_stmt): Move folding of OBJ_TYPE_REF
1691         with a call expr to ...
1692         * fold-const.c (fold_ternary) <case CALL_EXPR>: Here.
1693
1694 2006-03-01  Diego Novillo  <dnovillo@redhat.com>
1695
1696         * tree-vrp.c (extract_range_from_assert): Remove special
1697         handling for types with super-types.
1698
1699 2006-03-01  Ben Elliston  <bje@au.ibm.com>
1700
1701         * config.gcc: Add t-dfprules to $tmake_file for powerpc-*-linux*
1702         and powerpc64-*-linux* configurations.
1703         * config/t-dfprules: New file.
1704
1705         * mklibgcc.in: Add logic to handle $DFP_ENABLE and $DFP_CFLAGS.
1706         Compile dfp-bit.c from the source directory using -DWIDTH and
1707         $DFP_CFLAGS to control the compilation of that file, rather than
1708         generating width-specific versions in the build directory.
1709         * Makefile.in (libgcc.mk): Pass down DFP_ENABLE and DFP_CFLAGS.
1710         (LIBGCC_DEPS): Replace $(D32PBIT) et al with config/dfp-bit.[hc].
1711
1712 2006-02-28  Zack Weinberg  <zackw@panix.com>
1713
1714         * doc/md.texi: Avoid use of @headitem so that makeinfo <4.7
1715         continues to work.
1716
1717 2006-02-28  Eric Christopher  <echristo@apple.com>
1718
1719         * config/rs6000/darwin.h (ENABLE_STACK_EXECUTE): Define.
1720         Set up IN_LIBGCC definition of TARGET_64BIT.
1721         * config/i386/darwin.h (ENABLE_STACK_EXECUTE): Define.
1722
1723 2006-02-28  Roger Sayle  <roger@eyesopen.com>
1724
1725         PR middle-end/14752
1726         * c-common.c (c_common_truthvalue_conversion) <MINUS_EXPR,
1727         BIT_XOR_EXPR, BIT_AND_EXPR>: Delete.  Let fold optimize these
1728         cases via the construction of "expr != 0".
1729
1730 2006-02-28  Steven Bosscher  <stevenb.gcc@gmail.com>
1731
1732         * alias.c (alias_invariant, alias_invariant_size): Remove.
1733         (record_base_value): Remove.
1734         (memrefs_conflict_p): Don't look at alias_invariant.
1735         (end_alias_analysis): Don't free it.
1736         * alias.h (record_base_value): Remove prototype.
1737
1738 2006-02-28  Paolo Bonzini  <bonzini@gnu.org>
1739             Adam Nemet  <anemet@caviumnetworks.com>
1740
1741         * rtl.h (truncated_to_mode): Declare it.
1742         (struct rtl_hooks): Add reg_truncated_to_mode hook.
1743         * rtlhooks-def.h (RTL_HOOKS_REG_TRUNCATED_TO_MODE): New macro.
1744         (RTL_HOOKS_INITIALIZER): Include it.
1745         * rtlhooks.c (reg_truncated_to_mode_general): New function.
1746         * combine.c (RTL_HOOKS_REG_TRUNCATED_TO_MODE): Override to
1747         reg_truncated_to_mode.
1748         * rtlanal.c (truncated_to_mode): Define it.
1749         * simplify-rtx.c (simplify_unary_operation_1): Use it.
1750
1751 2006-02-28  Jeff Law  <law@redhat.com>
1752
1753         * tree-chrec.c (chrec_convert_aggressive): Do not eliminate
1754         conversions where TYPE_MIN_VALUE/TYPE_MAX_VALUE do not cover
1755         the range allowed by TYPE_PRECISION.
1756
1757         * tree.h (strct phi_arg_d): Remove unused NONZERO field.
1758
1759 2006-02-28  Dorit Nuzman  <dorit@il.ibm.com>
1760
1761         PR tree-optimization/26419
1762         * doc/invoke.texi (ftree-vectorizer-verbose): Add information on
1763         values of n.
1764
1765 2006-02-27  Zack Weinberg  <zackw@panix.com>
1766
1767         * doc/md.texi: Fix typo in previous change.
1768
1769 2006-02-27  Kenneth Zadeck <zadeck@naturalbridge.com>
1770
1771         * df.c: Remove.
1772
1773 2006-02-27  Zack Weinberg  <zackw@panix.com>
1774
1775         * rtl.def (define_constraint, define_register_constraint)
1776         (define_memory_constraint, define_address_constraint): New MD forms.
1777         * gensupport.c (process_rtx): Put define_constraint etc on the
1778         predicate queue.
1779         * genpreds.c (process_define_predicate): Adjust comment.  Validate
1780         the name, and call validate_exp to validate the expression.
1781         (mark_mode_tests, write_extract_subexp): Can assume correct input.
1782         (write_predicate_expr): Likewise.  NAME argument no longer necessary;
1783         all callers changed.
1784         (validate_exp, needs_variable, struct constraint_data)
1785         (constraints_by_letter_table, first_constraint, last_constraint_ptr)
1786         (FOR_ALL_CONSTRAINTS, generic_constraint_letters, const_int_constraints)
1787         (const_dbl_constraints, constraint_max_namelen)
1788         (have_register_constraints, have_memory_constraints)
1789         (have_address_constraints, have_address_constraints)
1790         (have_extra_constraints, have_const_int_constraints)
1791         (have_const_dbl_constraints, mangle, add_constraint)
1792         (process_define_constraint, process_define_register_constraint)
1793         (write_enum_constraint_num, write_lookup_constraint)
1794         (write_insn_constraint_len, write_regclass_for_constraint)
1795         (write_constraint_satisfied_p, write_insn_const_int_ok_for_constraint)
1796         (write_insn_extra_memory_constraint)
1797         (write_insn_extra_address_constraint)
1798         (write_satisfies_constraint_fns): New.
1799         (write_tm_preds_h): If we have new-style constraint definitions,
1800         prototype the functions generated from them, and define the
1801         old constraint interface (still used by generic code) in terms of
1802         those functions.
1803         (write_insn_preds_c): If we have new-style constraint definitions,
1804         generate all relevant functions from those definitions.
1805         (main): Handle define_constraint etc.
1806         * genoutput.c (struct constraint_data, indep_constraints)
1807         (mdep_constraint_letters, constraints_by_letter_table, note_constraint)
1808         (mdep_constraint_len): New data structures and functions, defined
1809         #ifdef USE_MD_CONSTRAINTS.
1810         (check_constraint_len): Don't define #ifdef USE_MD_CONSTRAINTS.
1811         (validate_insn_alternatives): If USE_MD_CONSTRAINTS is defined,
1812         use new logic to validate operand constraints against constraint
1813         definitions.
1814         (main): Process define_constraint etc. if USE_MD_CONSTRAINTS is
1815         defined.
1816         * defaults.h: If none of the old-style constraint macros are
1817         defined, define USE_MD_CONSTRAINTS; do not provide defaults for any
1818         old-style macros; and poison REG_CLASS_FROM_LETTER,
1819         CONST_OK_FOR_LETTER_P, CONST_DOUBLE_OK_FOR_LETTER_P, and
1820         EXTRA_CONSTRAINT.
1821         * recog.c (reg_fits_class_p): If cl is NO_REGS, return 0 immediately.
1822         * doc/md.texi: Document new constraint-definition mechanism and the
1823         C interface it provides.  Remove references to old mechanism
1824         elsewhere in the document.
1825         (Machine Constraints): Use pathnames relative to gcc directory,
1826         i.e. config/ARCH/FILE.  Change i386 section to refer to
1827         config/i386/predicates.md; update that section to match docstrings.
1828         * doc/tm.texi: Move all documentation of the old constraint-
1829         definition macros to their own section, clearly mark as obsolete.
1830
1831         * config/i386/predicates.md (R, q, Q, l, a, b, c, d, S, D, A, f, t)
1832         (u, y, x, Y, I, J, K, L, M, N, O, G, C, e, Z): New constraint
1833         definitions.
1834         * config/i386/i386.h (REG_CLASS_FROM_LETTER, CONST_OK_FOR_LETTER_P)
1835         (CONST_DOUBLE_OK_FOR_LETTER_P, EXTRA_CONSTRAINT): Delete.
1836         * config/i386/i386.md (*movdf_nointeger): Remove stray 'H' from
1837         constraint strings.
1838         (splits and peepholes): Use satisfies_constraint_*.
1839         * config/i386/i386.c (memory_address_length)
1840         (ix86_attr_length_immediate_default): Use satisfies_constraint_*.
1841
1842 2006-02-27  Daniel Berlin  <dberlin@dberlin.org>
1843
1844         * lambda-code.c (can_convert_to_perfect_nest): Allow any type of
1845         scalar operation to be put back into the loop.
1846
1847 2006-02-27  Jakub Jelinek  <jakub@redhat.com>
1848
1849         PR other/26208
1850         * unwind-dw2.c (struct _Unwind_Context): Add signal_frame field.
1851         (extract_cie_info): Handle S flag in augmentation string.
1852         (execute_cfa_program): If context->signal_frame, execute also
1853         fs->pc == context->ra instructions.
1854         (uw_frame_state_for): If context->signal_frame, don't subtract one
1855         from context->ra to find FDE.
1856         (uw_update_context_1): Set context->signal_frame to
1857         fs->signal_frame.
1858         (_Unwind_GetIPInfo): New function.
1859         * unwind-dw2.h (_Unwind_FrameState): Add signal_frame field.
1860         * unwind-c.c (PERSONALITY_FUNCTION): Use _Unwind_GetIPInfo instead
1861         of _Unwind_GetIP.
1862         * unwind-sjlj.c (_Unwind_GetIPInfo): New function.
1863         * unwind-generic.h (_Unwind_GetIPInfo): New prototype.
1864         * unwind-compat.c (_Unwind_GetIPInfo): New function.
1865         * libgcc-std.ver (_Unwind_GetIPInfo): Export @@GCC_4.2.0.
1866         * config/ia64/unwind-ia64.c (_Unwind_GetIPInfo): New function.
1867         * config/arm/unwind-arm.h (_Unwind_GetIPInfo): Define.
1868         * config/i386/linux-unwind.h (x86_fallback_frame_state,
1869         x86_64_fallback_frame_state): Set fs->signal_frame.
1870         * config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Likewise.
1871         (MD_FROB_UPDATE_CONTEXT): Define unconditionally.
1872         (frob_update_context): Likewise.  Workaround missing S flag in
1873         Linux 2.6.12 - 2.6.16 kernel vDSOs.
1874         * config/s390/linux-unwind.h (s390_fallback_frame_state): Likewise.
1875         Remove the psw_addr + 1 hack.
1876
1877 2006-02-27  Daniel Berlin  <dberlin@dberlin.org>
1878
1879         * tree-ssa-structalias.c (get_constraint_for): Move code to deal
1880         with aggregates here.
1881         (find_func_aliases): Remove code for &<aggregate> from here.
1882
1883 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1884
1885         * fold-const.c (fold_binary) <EQ_EXPR>:  Fold (~X & C) eq/ne 0 as
1886         (X & C) ne/eq 0, where C is a single bit, i.e. a power of two.
1887         Fold both "((X & C) ^ C) eq/ne 0" and "((X ^ C) & C) eq/ne 0"
1888         as (X & C) ne/eq 0.
1889
1890 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1891
1892         PR middle-end/19983
1893         * real.c (real_nan): Allow both 0x and 0X as hexadecimal prefixes.
1894
1895 2006-02-26  Zdenek Dvorak <dvorakz@suse.cz>
1896
1897         * opts.c (decode_options): Do not handle flag_strength_reduce.
1898         (common_handle_option): Handle OPT_floop_optimize, OPT_frerun_loop_opt
1899         and OPT_fstrength_reduce.
1900         * tree-ssa-loop.c (tree_ssa_loop_prefetch): Only test
1901         flag_prefetch_loop_arrays for being nonzero.
1902         * common.opt (floop-optimize, frerun-loop-opt): Resurrected as
1903         no-ops.
1904         (fprefetch-loop-arrays-rtl): Removed.
1905         (flag_prefetch_loop_arrays): Do not specify the value.
1906
1907         * doc/passes.texi: Update documentation of loop optimizer
1908         passes.
1909         * doc/invoke.texi (-fstrength-reduce, -fprefetch-loop-arrays-rtl,
1910         -frerun-loop-opt): Remove.
1911
1912 2006-02-26  Richard Guenther  <rguenther@suse.de>
1913
1914         PR tree-optimization/26421
1915         * tree-ssa-alias.c (find_used_portions): Don't treat parameters
1916         in function calls that are ADDR_EXPRs as using the whole structure.
1917
1918 2006-02-26  Steven Bosscher  <stevenb.gcc@gmail.com>
1919
1920         * common.opt (-floop-optimize, -frerun-loop-opt): Remove.
1921         * tree-pass.h (pass_loop_optimize): Remove.
1922         * passes.c (pass_loop_optimize): Never run it.
1923         * toplev.c (backend_init): Don't call init_loop.
1924         * opts.c (flag_loop_optimize_set): Remove.
1925         (decode_options): Never set flag_loop_optimize or flag_rerun_loop_opt.
1926         (common_handle_option) <OPT_floop_optimize>: Remove.  Don't disable
1927         the old RTL loop optimizer when profiling enabled.
1928         * predict.c (tree_estimate_probability): Always strip builtin_expect.
1929         * cfgcleanup.c (try_forward_edges): Don't avoid killing loop
1930         pre-headers for the sake of the old RTL loop optimizer.
1931         * Makefile.in: Remove all references to loop.o.
1932
1933         * doc/invoke.texi: Remove all references to -floop-optimize
1934         and -frerun-loop-opt.
1935
1936 2006-02-26  Zack Weinberg  <zackw@panix.com>
1937
1938         * doc/md.texi (Machine Constraints): Refer to all files with paths
1939         relative to gcc directory (i.e. config/CPU/file).  Add missing
1940         @table @code ... @end table to M32C subsection.
1941
1942 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1943
1944         * fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & 1) ^ 1 as
1945         (X & 1) == 0.
1946         <BIT_AND_EXPR>: Fold (X ^ 1) & 1 and ~X & 1 as (X & 1) == 0.
1947
1948 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1949             James A. Morrison  <phython@gcc.gnu.org>
1950
1951         PR middle-end/21137
1952         * fold-const.c (fold_binary) <EQ_EXPR>:  Fold ((X>>C1)&C2) eq/ne 0,
1953         when C2 is a power of two, as either (X&(C2<<C1)) eq/ne 0 if the
1954         new constant C2<<C1, or as (X<0) or (X,false) depending upon the
1955         signedness of the shift operation.
1956
1957 2006-02-26  Dorit Nuzman  <dorit@il.ibm.com>
1958
1959         PR tree-optimization/26359
1960         * tree-ssa-alias.c (new_type_alias): Set fields for new tag.
1961
1962 2006-02-25  Roger Sayle  <roger@eyesopen.com>
1963
1964         * simplify-rtx.c (simplify_relational_operation_1):  Simplify
1965         (X^Y) == 0 as X == Y and (X^Y) != 0 as X != Y.  Simplify (X^Y) == Y
1966         as X == 0, and some symmetry related transformations.
1967         Simplify (X^C1) == C2 as X == (C1^C2).  Split long comment line.
1968
1969 2006-02-25  Roger Sayle  <roger@eyesopen.com>
1970
1971         PR middle-end/23673
1972         * fold-const.c (fold_binary) <EQ_EXPR>:  Fold (X^Y) == 0 as X == Y
1973         and (X^Y) != 0 as X != Y.  Fold (X^Y) == Y as X == 0, and some
1974         symmetry related transformations.  Fold (X^C1) == C2 as
1975         X == (C1^C2).
1976
1977 2006-02-25  Juergen Weigert  <jw@suse.de>
1978         Richard Guenther  <rguenther@suse.de>
1979
1980         * scan-decls.c (scan_decls): Don't fetch new statement after CPP_EOF.
1981
1982 2006-02-24  Adam Nemet  <anemet@caviumnetworks.com>
1983
1984         * combine.c (gen_lowpart_or_truncate): Call
1985         simplify_gen_unary(TRUNCATE, ...) instead of gen_rtx_TRUNCATE.
1986
1987 2006-02-24  Diego Novillo  <dnovillo@redhat.com>
1988
1989         * doc/invoke.texi: Move -fopenmp description to "Options for
1990         Code Generation".
1991         Remove reference to -lgomp.
1992
1993 2006-02-24  David Edelsohn  <edelsohn@gnu.org>
1994
1995         * doc/install.texi: Require GNU tar version 1.14.
1996
1997 2006-02-24  Geoffrey Keating  <geoffk@apple.com>
1998
1999         * doc/tm.texi (Run-time Target): Document C_COMMON_OVERRIDE_OPTIONS.
2000         * doc/invoke.texi (C++ Dialect Options): Document
2001         -fno-use-cxa-get-exception-ptr.
2002         * configure.ac: Define DEFAULT_USE_CXA_ATEXIT to 2 not 1.
2003         * configure: Regenerate.
2004         * c.opt (fuse-cxa-get-exception-ptr): New.
2005         * c-opts.c (c_common_handle_option): Handle
2006         OPT_fuse_cxa_get_exception_ptr.
2007         * c-common.c (flag_use_cxa_atexit): Update documentation.
2008         (flag_use_cxa_get_exception_ptr): New.
2009         * c-common.h (flag_use_cxa_get_exception_ptr): New.
2010         * config/rs6000/darwin.h (SUBTARGET_OVERRIDE_OPTIONS): Improve
2011         documentation.
2012         (C_COMMON_OVERRIDE_OPTIONS): New.
2013
2014 2006-02-24  Roger Sayle  <roger@eyesopen.com>
2015
2016         PR middle-end/24952
2017         * combine.c (try_combine): Explicitly check whether GET_CODE is
2018         a SET or a CLOBBER, instead on checking that it isn't a USE.
2019
2020 2006-02-24  Roger Sayle  <roger@eyesopen.com>
2021
2022         * fold-const.c (fold_comparison): New subroutine of fold_binary
2023         containing transformations common to both the equality and
2024         ordering relational operators, factored out of fold_binary.
2025         (fold_binary): Separate out the equality operators (EQ_EXPR
2026         and NE_EXPR) from the ordering operators (LT_EXPR, GT_EXPR,
2027         LE_EXPR and GE_EXPR), calling fold_comparison to perform the
2028         transformations common to both.
2029         (fold_div_compare): Fix latent bugs in the previously unreachable
2030         LT_EXPR and GE_EXPR cases.
2031
2032 2006-02-24  David Edelsohn  <edelsohn@gnu.org>
2033
2034         * config/rs6000/rs6000.c (rs6000_init_builtins): Change
2035         decl libname for clog to __clog on AIX.
2036
2037         * config/rs6000/xcoff.h (MAX_OFILE_ALIGNMENT): Define.
2038
2039 2006-02-24  Alan Modra  <amodra@bigpond.net.au>
2040
2041         PR target/26453
2042         * config/rs6000/rs6000.c (rs6000_output_function_epilogue): Don't
2043         output traceback table for thunks.  Localise rs6000_stack_info call.
2044
2045 2006-02-23  Roger Sayle  <roger@eyesopen.com>
2046             Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
2047
2048         * gthr-posix.h (__gthrw): Fix typo in comment.
2049
2050 2006-02-23  Geoffrey Keating  <geoffk@apple.com>
2051
2052         * doc/cpp.texi (Character sets): Document that we do support
2053         input files to be in any character set.
2054
2055 2006-02-23  Jeff Law  <law@redhat.com>
2056
2057         * tree.h (PHI_ARG_NONZERO): Remove.
2058         * tree-phinodes.c (add_phi_arg): No longer initialize PHI_ARG_NONZERO.
2059         (remove_phi_arg_num): No longer copy PHI_ARG_NONZERO from the old
2060         node to the new node.
2061
2062         PR tree-optimization/26425
2063         * tree-vrp.c (vrp_visit_assignment): If the LHS's type has a NULL
2064         min/max, then assume its varying.
2065
2066 2006-02-23  Zdenek Dvorak <dvorakz@suse.cz>
2067
2068         PR rtl-optimization/26316
2069         * rtlanal.c (enum may_trap_p_flags): New.
2070         (may_trap_p_1): Take flags instead of unaligned_mems argument.  Ignore
2071         MEM_NOTRAP_P if flags & MTP_AFTER_MOVE.
2072         (may_trap_p, may_trap_or_fault_p): Pass flags to may_trap_p_1.
2073         (may_trap_after_code_motion_p): New function.
2074         * loop-invariant.c (find_identical_invariants): Fix dump formating.
2075         (find_invariant_insn): Use may_trap_after_code_motion_p.
2076         * rtl.h (may_trap_after_code_motion_p): Declare.
2077
2078 2006-02-23  Zdenek Dvorak <dvorakz@suse.cz>
2079
2080         * emit-rtl.c (immed_double_const): Cleanup.
2081
2082 2006-02-23  Daniel Berlin  <dberlin@dberlin.org>
2083
2084         Fix PR tree-optimization/26376
2085         * tree-ssa-structalias.c (find_func_aliases):  Use get_id_for_tree,
2086         remove assert.
2087
2088 2006-02-23  Jakub Jelinek  <jakub@redhat.com>
2089
2090         PR middle-end/26412
2091         * gimplify.c (omp_add_variable): Guard variable size decl test with
2092         DECL_SIZE (decl) check.
2093
2094 2006-02-23  Richard Guenther  <rguenther@suse.de>
2095
2096         PR middle-end/26439
2097         * tree-ssa-structalias.c (find_func_aliases): Handle complex types
2098         like aggregate types.
2099
2100 2006-02-23  Jakub Jelinek  <jakub@redhat.com>
2101
2102         * configure.ac: Add --with{,out}-long-double-128 configure option.
2103         (TARGET_DEFAULT_LONG_DOUBLE_128): New test.
2104         * configure: Rebuilt.
2105         * config.in: Rebuilt.
2106         * doc/install.texi (Options specification): Document
2107         --with-long-double-128.
2108
2109         * config/rs6000/linux.h [TARGET_DEFAULT_LONG_DOUBLE_128]
2110         (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
2111         * config/rs6000/linux64.h [TARGET_DEFAULT_LONG_DOUBLE_128]
2112         (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
2113
2114 2006-02-23  Aldy Hernandez  <aldyh@redhat.com>
2115
2116         * config/s390/s390.c (override_options): Handle
2117         TARGET_DEFAULT_LONG_DOUBLE_128.
2118
2119         * config/alpha/alpha.c (override_options): Handle
2120         TARGET_DEFAULT_LONG_DOUBLE_128.
2121
2122         * config/sparc/sparc.c (sparc_override_options): Handle
2123         TARGET_DEFAULT_LONG_DOUBLE_128.
2124
2125 2006-02-22  Daniel Jacobowitz  <dan@codesourcery.com>
2126
2127         * Makefile.in (stmp-fixinc): Use real-$(INSTALL_HEADERS_DIR).
2128         (real-install-headers-tar, real-install-headers-cpio)
2129         (real-install-headers-cp): New targets.
2130
2131 2006-02-22  Richard Sandiford  <richard@codesourcery.com>
2132
2133         * tree.h (variable_section): Delete.
2134         * varasm.c (variable_section): Delete.
2135
2136 2006-02-22  Paolo Bonzini  <bonzini@gnu.org>
2137
2138         * install.texi: Add notes on install.texi2html.
2139         (Building in parallel): Do not use footnotes.
2140
2141 2006-02-21  Aldy Hernandez  <aldyh@redhat.com>
2142
2143         PR libgomp/26234
2144         * doc/install.texi (Configuration): Document --disable-libgomp.
2145
2146 2006-02-21  Geoffrey Keating  <geoffk@apple.com>
2147
2148         * config/i386/darwin.h (DWARF2_FRAME_REG_OUT): New.
2149
2150 2006-02-21  Alexandre Oliva  <aoliva@redhat.com>
2151
2152         * config/i386/sse.md (vec_extractv2df_1_sse): New.
2153         (vec_extractv2df_0_sse): New.
2154
2155 2006-02-21  Alexandre Oliva  <aoliva@redhat.com>
2156
2157         * defaults.h (CFA_FRAME_BASE_OFFSET): Define.
2158         * config/ia64/ia64.h (CFA_FRAME_BASE_OFFSET): Override.
2159         * doc/tm.texi (CFA_FRAME_BASE_OFFSET): Document.
2160         * dwarf2out.c (build_cfa_loc): New offset parameter.  Add it
2161         to the result of the expression.
2162         (def_cfa_1): Adjust.
2163         (frame_pointer_cfa_offset): Rename to...
2164         (frame_pointer_fb_offset): ... this.  Adjust all uses.
2165         (convert_cfa_to_loc_list): Rename to...
2166         (convert_cfa_to_fb_loc_list): ... this.  New offset parameter.
2167         Pass it on to build_cfa_loc.
2168         (compute_frame_pointer_to_cfa_displacement): Rename to...
2169         (compute_frame_pointer_to_fb_displacement): ... this.  New
2170         offset parameter.  Use it in computation.
2171         (gen_subprogram_die): Compute cfa_fb_offset with the new
2172         macro, and use it to compute the fb loc list and the
2173         displacement.
2174
2175 2006-02-21  Bernd Schmidt  <bernd.schmidt@analog.com>
2176
2177         * config/bfin/predicates.md (cc_operand): Delete predicate.  All uses
2178         replaced with register_operand.
2179         * config/bfin/bfin.c (bfin_register_move_cost): Moving CC to any
2180         non-DREG is expensive.
2181         * config/bfin/bfin.h (FIXED_REGISTERS): CC isn't fixed.
2182         * config/bfin/bfin.md (movbi): Fix constraints and template for moves
2183         involving memory.
2184
2185 2006-02-21  Joseph S. Myers  <joseph@codesourcery.com>
2186
2187         * doc/install.texi2html: Use set -e.
2188
2189 2006-02-21  Richard Sandiford  <richard@codesourcery.com>
2190
2191         * doc/tm.texi (ASM_OUTPUT_SHARED_COMMON, ASM_OUTPUT_SHARED_BSS)
2192         (ASM_OUTPUT_SHARED_LOCAL): Delete.
2193         * doc/invoke.texi (-fshared-data): Delete.
2194         * common.opt (fshared-data): Delete.
2195         * varasm.c (asm_emit_uninitialised): Remove flag_shared_data handling.
2196         (assemble_static_space): Remove #if 0 code.
2197         * system.h (ASM_OUTPUT_SHARED_COMMON, ASM_OUTPUT_SHARED_BSS)
2198         (ASM_OUTPUT_SHARED_LOCAL): Poison.
2199         * config/cris/cris.h: Remove FIXME.
2200
2201 2006-02-21  Paolo Bonzini  <bonzini@gnu.org>
2202
2203         * doc/sourcebuild.texi (Front End Directory): No more double-colon
2204         hooks.
2205
2206 2006-02-21  Jakub Jelinek  <jakub@redhat.com>
2207
2208         PR middle-end/26379
2209         * combine.c (simplify_shift_const_1): Disable nested shifts
2210         optimization for vector shifts.
2211
2212 2006-02-20  Roger Sayle  <roger@eyesopen.com>
2213
2214         PR tree-optimization/26361
2215         * tree-vrp.c (extract_range_from_unary_expr): Handle NEGATE_EXPR
2216         of unsigned integer types.
2217
2218 2006-02-20  Sebastian Pop  <pop@cri.ensmp.fr>
2219
2220         * tree-chrec.c (eq_evolutions_p): New.
2221         * tree-chrec.h (eq_evolutions_p): Declared.
2222         * tree-data-ref.c: Fix formatting.
2223         (datadep_stats, dependence_stats): New.
2224         (gcd): Moved...
2225         (print_direction_vector): New.
2226         (dump_data_dependence_relation): Use print_direction_vector.
2227         (object_analysis, create_data_ref): Handle COMPONENT_REF.
2228         (compute_subscript_distance): Static.
2229         (initialize_data_dependence_relation): Static.  Get the number
2230         of loops surrounding the references from the callers, and initialize
2231         DDR_SIZE_VECT to nb_loops.  Use both base_addr_differ_p and
2232         base_object_differ_p analyzers.
2233         (analyze_ziv_subscript, analyze_siv_subscript_cst_affine,
2234         compute_overlap_steps_for_affine_1_2,
2235         analyze_subscript_affine_affine): Count the classified dependences.
2236         Print a message when a test failed.
2237         (can_use_analyze_subscript_affine_affine): New.
2238         (analyze_siv_subscript): Compute the data dependences on symbolic
2239         scevs that verify can_use_analyze_subscript_affine_affine.
2240         (chrec_steps_divide_constant_p): Returns true, false, or unknown.
2241         (analyze_miv_subscript): Update use of chrec_steps_divide_constant_p.
2242         Handle symbolic scevs.
2243         (analyze_overlapping_iterations): Let symbolic affine scevs to be
2244         analyzed.
2245         (subscript_dependence_tester): Moved...
2246         (build_classic_dist_vector, build_classic_dir_vector): Don't use
2247         lambda_vector_clear on newly allocated vectors.  Get nb_loops from
2248         DDR_SIZE_VECT instead of getting it in parameter.
2249         (subscript_dependence_tester): ... here.  Take as a parameter
2250         loop_nest_depth.  Call build_classic_dist_vector and
2251         build_classic_dir_vector.
2252         (compute_affine_dependence): Update subscript_dependence_tester
2253         parameters.  Update datadep_stats counters.  Call
2254         compute_subscript_distance.
2255         (compute_self_dependence): Save the dist and dir vectors.  Call
2256         compute_subscript_distance.
2257         (ddr_p, DEF_VEC_P(ddr_p), DEF_VEC_ALLOC_P(ddr_p,heap)): Moved...
2258         (compute_all_dependences): Reorder parameters as they were before
2259         conversion to VEC.  Pass nb_loops and loop_nest_depth.  Don't call
2260         compute_subscript_distance.  Update the use of
2261         compute_affine_dependence and initialize_data_dependence_relation.
2262         (find_data_references_in_loop): Handle COMPONENT_REF.
2263         (compute_data_dependences_for_loop): Initialize dependence_stats.
2264         Don't call build_classic_dist_vector and build_classic_dir_vector.
2265         Update the parameters of initialize_data_dependence_relation and
2266         compute_all_dependences.  Print the statistics from datadep_stats.
2267         (analyze_all_data_dependences): Static.  Not used until the pass for
2268         checking the data dependences is contributed.
2269         * tree-data-ref.h (ddr_p, DEF_VEC_P(ddr_p),
2270         DEF_VEC_ALLOC_P(ddr_p,heap)): ... here.
2271         (initialize_data_dependence_relation, compute_affine_dependence,
2272         analyze_all_data_dependences, compute_subscript_distance): Removed.
2273         (print_direction_vector): New.
2274         * lambda.h (gcd): ... here.
2275         (lambda_vector_gcd): Moved here from gcd_vector.
2276         * lambda-code.c (gcd, gcd_vector): Removed.
2277         (lambda_compute_target_space): Use lambda_vector_gcd.  Fix formatting.
2278         * Makefile.in (tree-vect-patterns.o): Depends on TREE_DATA_REF_H.
2279
2280 2006-02-20  Diego Novillo  <dnovillo@redhat.com>
2281
2282         * ipa-type-escape.c: Tidy some comments and white space.
2283         * tree-ssa-operands.c: Likewise.
2284
2285 2006-02-20  Andrew Pinski  <pinskia@physics.uc.edu>
2286
2287         PR tree-opt/25879
2288         * tree-pretty-print.c (debug_tree_chain): Walk the chains.
2289         (dump_decl_name): Do not walk the decl tree chains.
2290         * tree-pass.h (TDF_CHAIN): Remove.
2291
2292 2006-02-20  Rafael Ávila de Espíndola  <rafael.espindola@gmail.com>
2293
2294         * Makefile.in (C): Remove
2295         (PROTO): Remove
2296         (.PHONY): Remove C and PROTO
2297
2298 2006-02-20  Roger Sayle  <roger@eyesopen.com>
2299
2300         PR middle-end/26236
2301         * doc/c-tree.texi (INTEGER_TYPE): Remove reference to the now
2302         deprecated CHAR_TYPE tree code.
2303
2304 2006-02-20  Paolo Bonzini  <bonzini@gnu.org>
2305
2306         * configure.ac (target_list): Add install-info, dvi, html.
2307         * configure: Regenerate.
2308
2309         * ada/Make-lang.in, cp/Make-lang.in, fortran/Make-lang.in,
2310         java/Make-lang.in, objc/Make-lang.in, objcp/Make-lang.in,
2311         treelang/Make-lang.in: Do not use double-colon rules.
2312
2313 2006-02-20  Daniel Berlin  <dberlin@dberlin.org>
2314
2315         * tree.h (struct tree_memory_tag): Add is_used_alone member.
2316         (TMT_USED_ALONE): New macro.
2317         * tree-pass.h (PROP_tmt_usage): New property.
2318         (TODO_update_tmt_usage): New todo.
2319         * tree-ssa-alias.c (updating_used_alone): New variable.
2320         (recalculate_used_alone): New function.
2321         (compute_may_aliases): Set updating_used_alone, call
2322         recalculate_used_alone.
2323         * tree-sra.c (pass_sra): Note that this pass destroys
2324         PROP_tmt_usage, and add TODO_update_tmt_usage.
2325         * tree-ssa-forwprop.c (pass_forwprop): Ditto.
2326         * tree-flow.h (updating_used_alone): Prototype.
2327         (recalculate_used_alone): Ditto.
2328         * passes.c (execute_todo): Add code to set updating_used_alone,
2329         and call recalculate.
2330         * tree-ssa-operands.c (add_virtual_operand): Only append bare def
2331         for clobber if used alone, and add assert to verify used_alone
2332         status.
2333
2334 2006-02-20  Angel Nunez Mencias  <anunez@de.ibm.com>
2335
2336         * config/s390/s390.c (legitimize_pic_address): Assertions checking
2337         for non tls symbols added.
2338         (legitimize_address): Do nothing for PLUS expressions if one of the
2339         addends is a tls symbol reference.
2340
2341 2006-02-20  Paolo Bonzini  <bonzini@gnu.org>
2342
2343         PR bootstrap/25476
2344
2345         * Makefile.in (LDFLAGS): Define from autoconf substitution.
2346
2347         * Makefile.in (BOOTSTRAPPING): New.
2348         (quickstrap): New definition if BOOTSTRAPPING=yes.
2349
2350         * Makefile.in (CONFIG_LANGUAGES): Substitute all_selected_languages.
2351         * configure.ac: Substitute all_selected_languages with the languages
2352         that were configured.  For all the other variables except
2353         lang_specs_files, include all the languages in the tree.
2354         * configure: Regenerate.
2355
2356         * Makefile.in (stmp-fixinc): Copy includes from the prev-gcc directory,
2357         if there is one.  Run the commands to run fixincludes in the same
2358         subshell.
2359
2360         * doc/makefile.texi: Document new makefile targets from toplevel bootstrap.
2361         * doc/install.texi: Document exact conventions for searching target tools.
2362         Document --with-build-time-tools.  Document toplevel bootstrap.  Document
2363         something more about building an Ada cross-compiler.  Don't list GNU Make
2364         requirements which affect all platforms.
2365
2366 2006-02-19  Roger Sayle  <roger@eyesopen.com>
2367
2368         PR middle-end/19543
2369         * varasm.c (compare_constant) <INTEGER_CST>: Integer constants are
2370         only equivalent if the have both the same mode and precision.
2371
2372 2006-02-20  Ben Elliston  <bje@au.ibm.com>
2373
2374         * doc/tree-ssa.texi (Interfaces): Describe low vs. high GIMPLE.
2375
2376 2006-02-19  Roger Sayle  <roger@eyesopen.com>
2377             Steven Bosscher  <stevenb.gcc@gmail.com>
2378
2379         * gcse.c (want_to_gcse_p): On STACK_REGS targets, look through
2380         constant pool references to identify stack mode constants.
2381         * rtlanal.c (constant_pool_constant_p): New predicate to check
2382         whether operand is a floating point constant in the pool.
2383         * rtl.h (constant_pool_constant_p): Prototype here.
2384         * loop.c (scan_loop): Avoid hoisting constants from the constant
2385         pool on STACK_REGS targets.
2386         (load_mems): Likewise.
2387         * loop-invariant.c (get_inv_cost): Make hoisting constant pool
2388         loads into x87 registers expensive in terms of register pressure.
2389
2390 2006-02-19  Roger Sayle  <roger@eyesopen.com>
2391
2392         * gthr-posix.h: On Tru64, map __gthr_foo as a weak reference to
2393         __foo and not foo when _PTHREAD_USE_MANGLED_NAMES_ is defined.
2394
2395 2006-02-19  David Edelsohn  <edelsohn@gnu.org>
2396
2397         * config/rs6000/xcoff.h (TARGET_ASM_OUTPUT_ANCHOR): Define.
2398         * config/rs6000/rs6000.c (rs6000_xcoff_asm_output_anchor): Define.
2399
2400 2006-02-19  Daniel Berlin  <dberlin@dberlin.org>
2401
2402         * doc/invoke.texi: Document -fipa-pta.
2403         * common.opt: Add ipa-pta option.
2404         * tree-ssa-structalias.c (DONT_PROPAGATE_WITH_ANYTHING): Removed.
2405         (do_sd_constraint): Enable DONT_PROPAGATE_WITH_ANYTHING code.
2406         (do_ds_constraint): Ditto.
2407         (get_constraint_for): Only add to referenced_vars if
2408         referenced_vars exists.
2409         (insert_into_field_list): Rewrite to do this unsorted.
2410         (insert_into_field_list_sorted): Rename old insert_into_field_list
2411         to this.
2412         (create_function_info_for): Use insert_into_field_list_sorted.
2413         (create_variable_info_for): Rewrite so it uses unsorted version,
2414         since the field list is sorted.
2415         (intra_create_variable_infos): Only add to referenced_vars if
2416         referenced_vars exists.
2417         (ipa_pta_execute): Init heapvars, and delete when done.
2418         * passes.c (init_optimization_passes): Add call to pass_ipa_pta.
2419
2420 2006-02-19  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
2421
2422         * doc/install.texi: Add missing `@samp'.
2423
2424 2006-02-18  Andrew Pinski <pinskia@physics.uc.edu>
2425
2426         * config/rs6000/darwin.h (ASM_OUTPUT_SPECIAL_POOL_ENTRY_P):
2427         Use the arguments.
2428
2429 2006-02-18  Mark Wielaard  <mark@klomp.org>
2430
2431         * doc/contrib.texi (Contributors): Add classpath/libgcj hackers
2432         who added new 4.1 features, bug fixes and integration support.
2433
2434 2006-02-18  David Edelsohn  <edelsohn@gnu.org>
2435
2436         PR target/26350
2437         * config/rs6000/rs6000.md (extenddftf2): Force 0.0 to validized
2438         MEM for ABI_V4 pic.
2439
2440 2006-02-18  Richard Sandiford  <richard@codesourcery.com>
2441
2442         * cselib.c (cselib_init): Change RTX_SIZE to RTX_CODE_SIZE.
2443         * emit-rtl.c (copy_rtx_if_shared_1): Use shallow_copy_rtx.
2444         (copy_insn_1): Likewise.  Don't copy each field individually.
2445         Reindent.
2446         * read-rtl.c (apply_macro_to_rtx): Use RTX_CODE_SIZE instead
2447         of RTX_SIZE.
2448         * reload1.c (eliminate_regs): Use shallow_copy_rtx.
2449         * rtl.c (rtx_size): Rename variable to...
2450         (rtx_code_size): ...this.
2451         (rtx_size): New function.
2452         (rtx_alloc_stat): Use RTX_CODE_SIZE instead of RTX_SIZE.
2453         (copy_rtx): Use shallow_copy_rtx.  Don't copy each field individually.
2454         Reindent.
2455         (shallow_copy_rtx_stat): Use rtx_size instead of RTX_SIZE.
2456         * rtl.h (rtx_code_size): New variable.
2457         (rtx_size): Change from a variable to a function.
2458         (RTX_SIZE): Rename to...
2459         (RTX_CODE_SIZE): ...this.
2460
2461         PR target/9703
2462         PR tree-optimization/17106
2463         * doc/tm.texi (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Document.
2464         (Anchored Addresses): New section.
2465         * doc/invoke.texi (-fsection-anchors): Document.
2466         * doc/rtl.texi (SYMBOL_REF_IN_BLOCK_P, SYMBOL_FLAG_IN_BLOCK): Likewise.
2467         (SYMBOL_REF_ANCHOR_P, SYMBOL_FLAG_ANCHOR): Likewise.
2468         (SYMBOL_REF_BLOCK, SYMBOL_REF_BLOCK_OFFSET): Likewise.
2469         * hooks.c (hook_bool_mode_rtx_false): New function.
2470         * hooks.h (hook_bool_mode_rtx_false): Declare.
2471         * gengtype.c (create_optional_field): New function.
2472         (adjust_field_rtx_def): Add the "block_sym" field for SYMBOL_REFs when
2473         SYMBOL_REF_IN_BLOCK_P is true.
2474         * target.h (output_anchor, use_blocks_for_constant_p): New hooks.
2475         (min_anchor_offset, max_anchor_offset): Likewise.
2476         (use_anchors_for_symbol_p): New hook.
2477         * toplev.c (compile_file): Call output_object_blocks.
2478         (target_supports_section_anchors_p): New function.
2479         (process_options): Check that -fsection-anchors is only used on
2480         targets that support it and when -funit-at-a-time is in effect.
2481         * tree-ssa-loop-ivopts.c (prepare_decl_rtl): Only create DECL_RTL
2482         if the decl doesn't have one.
2483         * dwarf2out.c: Remove instantiations of VEC(rtx,gc).
2484         * expr.c (emit_move_multi_word, emit_move_insn): Pass the result
2485         of force_const_mem through use_anchored_address.
2486         (expand_expr_constant): New function.
2487         (expand_expr_addr_expr_1): Call it.  Use the same modifier when
2488         calling expand_expr for INDIRECT_REF.
2489         (expand_expr_real_1): Pass DECL_RTL through use_anchored_address
2490         for all modifiers except EXPAND_INITIALIZER.  Use expand_expr_constant.
2491         * expr.h (use_anchored_address): Declare.
2492         * loop-unroll.c: Don't declare rtx vectors here.
2493         * explow.c: Include output.h.
2494         (validize_mem): Call use_anchored_address.
2495         (use_anchored_address): New function.
2496         * common.opt (-fsection-anchors): New switch.
2497         * varasm.c (object_block_htab, anchor_labelno): New variables.
2498         (hash_section, object_block_entry_eq, object_block_entry_hash)
2499         (use_object_blocks_p, get_block_for_section, create_block_symbol)
2500         (use_blocks_for_decl_p, change_symbol_section): New functions.
2501         (get_variable_section): New function, split out from assemble_variable.
2502         (make_decl_rtl): Create a block symbol if use_object_blocks_p and
2503         use_blocks_for_decl_p say so.  Use change_symbol_section if the
2504         symbol has already been created.
2505         (assemble_variable_contents): New function, split out from...
2506         (assemble_variable): ...here.  Don't output any code for
2507         block symbols; just pass them to place_block_symbol.
2508         Use get_variable_section and assemble_variable_contents.
2509         (get_constant_alignment, get_constant_section, get_constant_size): New
2510         functions, split from output_constant_def_contents.
2511         (build_constant_desc): Create a block symbol if use_object_blocks_p
2512         says so.  Or into SYMBOL_REF_FLAGS.
2513         (assemble_constant_contents): New function, split from...
2514         (output_constant_def_contents): ...here.  Don't output any code
2515         for block symbols; just pass them to place_section_symbol.
2516         Use get_constant_section and get_constant_alignment.
2517         (force_const_mem): Create a block symbol if use_object_blocks_p and
2518         use_blocks_for_constant_p say so.  Or into SYMBOL_REF_FLAGS.
2519         (output_constant_pool_1): Add an explicit alignment argument.
2520         Don't switch sections here.
2521         (output_constant_pool): Adjust call to output_constant_pool_1.
2522         Switch sections here instead.  Don't output anything for block symbols;
2523         just pass them to place_block_symbol.
2524         (init_varasm_once): Initialize object_block_htab.
2525         (default_encode_section_info): Keep the old SYMBOL_FLAG_IN_BLOCK.
2526         (default_asm_output_anchor, default_use_aenchors_for_symbol_p)
2527         (place_block_symbol, get_section_anchor, output_object_block)
2528         (output_object_block_htab, output_object_blocks): New functions.
2529         * target-def.h (TARGET_ASM_OUTPUT_ANCHOR): New macro.
2530         (TARGET_ASM_OUT): Include it.
2531         (TARGET_USE_BLOCKS_FOR_CONSTANT_P): New macro.
2532         (TARGET_MIN_ANCHOR_OFFSET, TARGET_MAX_ANCHOR_OFFSET): New macros.
2533         (TARGET_USE_ANCHORS_FOR_SYMBOL_P): New macro.
2534         (TARGET_INITIALIZER): Include them.
2535         * rtl.c (rtl_check_failed_block_symbol): New function.
2536         * rtl.h: Include vec.h.  Declare heap and gc rtx vectors.
2537         (block_symbol, object_block): New structures.
2538         (rtx_def): Add a block_symbol field to the union.
2539         (BLOCK_SYMBOL_CHECK): New macro.
2540         (rtl_check_failed_block_symbol): Declare.
2541         (SYMBOL_FLAG_IN_BLOCK, SYMBOL_FLAG_ANCHOR): New SYMBOL_REF flags.
2542         (SYMBOL_REF_IN_BLOCK_P, SYMBOL_REF_ANCHOR_P): New predicates.
2543         (SYMBOL_FLAG_MACH_DEP_SHIFT): Bump by 2.
2544         (SYMBOL_REF_BLOCK, SYMBOL_REF_BLOCK_OFFSET): New accessors.
2545         * output.h (output_section_symbols): Declare.
2546         (object_block): Name structure.
2547         (place_section_symbol, get_section_anchor, default_asm_output_anchor)
2548         (default_use_anchors_for_symbol_p): Declare.
2549         * Makefile.in (RTL_BASE_H): Add vec.h.
2550         (explow.o): Depend on output.h.
2551         * config/rs6000/rs6000.c (TARGET_MIN_ANCHOR_OFFSET): Override default.
2552         (TARGET_MAX_ANCHOR_OFFSET): Likewise.
2553         (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Likewise.
2554         (rs6000_use_blocks_for_constant_p): New function.
2555
2556 2006-02-18  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
2557
2558         * doc/install.texi (hppa*-hp-hpux*): Update for 4.1.0.
2559
2560 2006-02-18  Andrew Pinski  <pinskia@physics.uc.edu>
2561
2562         PR tree-opt/25680
2563         * tree-ssa-ccp.c (ccp_fold): Handle store CCP of REALPART_EXPR and
2564         IMAGPART_EXPR.
2565
2566 2006-02-18  Diego Novillo  <dnovillo@redhat.com>
2567
2568         * tree-flow.h (struct var_ann_d): Rename field is_alias_tag to
2569         is_aliased.
2570         Update all users.
2571
2572 2006-02-18  Jakub Jelinek  <jakub@redhat.com>
2573
2574         PR middle-end/26334
2575         * stmt.c (decl_overlaps_hard_reg_set_p): Use DECL_HARD_REGISTER
2576         instead of DECL_REGISTER.
2577
2578 2006-02-18  Olivier Hainque  <hainque@adacore.com>
2579
2580         PR ada/13408
2581         * pa.h (WIDEST_HARDWARE_FP_SIZE): Define.
2582
2583 2006-02-18  Joseph S. Myers  <joseph@codesourcery.com>
2584
2585         PR target/24837
2586         * config.gcc: Define UCLIBC_DEFAULT to 0 or 1.
2587         * opth-gen.awk: Handle Var and InverseMask together.
2588         * config/linux.opt (muclibc, mglibc): Use Var(linux_uclibc).
2589         * config/linux.h: Use #if not #ifdef for testing UCLIBC_DEFAULT.
2590         (TARGET_C99_FUNCTIONS): Test OPTION_GLIBC not TARGET_GLIBC.
2591         (CHOOSE_DYNAMIC_LINKER): Give an error for -mglibc and -muclibc
2592         used together.
2593         (UCLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER64,
2594         LINUX_DYNAMIC_LINKER32, LINUX_DYNAMIC_LINKER64): Define.
2595         * config/alpha/linux-elf.h (GLIBC_DYNAMIC_LINKER,
2596         UCLIBC_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2597         LINUX_DYNAMIC_LINKER): Define.
2598         (ELF_DYNAMIC_LINKER): Define to LINUX_DYNAMIC_LINKER.
2599         * config/alpha/linux.h (TARGET_C99_FUNCTIONS): Define to
2600         TARGET_GLIBC.
2601         * config/cris/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2602         (CRIS_LINK_SUBTARGET_SPEC): Pass a -dynamic-linker option.
2603         * config/frv/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2604         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2605         (TARGET_C99_FUNCTIONS): Don't define.
2606         * config/i386/linux.h (DYNAMIC_LINKER): Rename to
2607         GLIBC_DYNAMIC_LINKER.
2608         (SUBTARGET_EXTRA_SPECS): Use LINUX_DYNAMIC_LINKER.
2609         * config/i386/linux64.h (GLIBC_DYNAMIC_LINKER32,
2610         GLIBC_DYNAMIC_LINKER64): Define.
2611         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER32 and
2612         LINUX_DYNAMIC_LINKER64.
2613         * config/ia64/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2614         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2615         * config/m32r/linux.h (GLIBC_DYNAMIC_LINKE): Define.
2616         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2617         * config/m68k/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2618         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2619         * config/mips/linux64.h (GLIBC_DYNAMIC_LINKER32,
2620         GLIBC_DYNAMIC_LINKER64, GLIBC_DYNAMIC_LINKERN32,
2621         UCLIBC_DYNAMIC_LINKERN32, LINUX_DYNAMIC_LINKERN32): Define.
2622         (LINK_SPEC): Use LINUX_DYNAMIC_LINKERN32, LINUX_DYNAMIC_LINKER64
2623         and LINUX_DYNAMIC_LINKER32.
2624         * config/mn10300/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2625         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2626         * config/pa/pa-linux.h (GLIBC_DYNAMIC_LINKER): Define.
2627         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2628         * config/rs6000/linux.h (TARGET_C99_FUNCTIONS): Define to
2629         TARGET_GLIBC.
2630         * config/rs6000/linux64.h (TARGET_C99_FUNCTIONS): Likewise.
2631         (GLIBC_DYNAMIC_LINKER32, GLIBC_DYNAMIC_LINKER64,
2632         UCLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER64,
2633         CHOOSE_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2634         LINUX_DYNAMIC_LINKER32, LINUX_DYNAMIC_LINKER64): Define.
2635         (LINK_OS_LINUX_SPEC32): Use LINUX_DYNAMIC_LINKER32.
2636         (LINK_OS_LINUX_SPEC64): Use LINUX_DYNAMIC_LINKER64.
2637         * config/rs6000/sysv4.h (GLIBC_DYNAMIC_LINKER,
2638         UCLIBC_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2639         LINUX_DYNAMIC_LINKER): Define.
2640         (LINK_OS_LINUX_SPEC): Use LINUX_DYNAMIC_LINKE.
2641         * config/s390/linux.h (GLIBC_DYNAMIC_LINKER32,
2642         GLIBC_DYNAMIC_LINKER64): Define.
2643         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER32 and
2644         LINUX_DYNAMIC_LINKER64.
2645         * config/sh/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2646         (SUBTARGET_LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2647         * config/sparc/linux.h (GLIBC_DYNAMIC_LINKER,
2648         UCLIBC_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2649         LINUX_DYNAMIC_LINKER): Define.
2650         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2651         (TARGET_C99_FUNCTIONS): Define to TARGET_GLIBC.
2652         * config/sparc/linux64.h (GLIBC_DYNAMIC_LINKER32,
2653         GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER32,
2654         UCLIBC_DYNAMIC_LINKER64, CHOOSE_DYNAMIC_LINKER,
2655         LINUX_DYNAMIC_LINKER32, LINUX_DYNAMIC_LINKER64): Define.
2656         (LINK_ARCH32_SPEC): Use LINUX_DYNAMIC_LINKER32.
2657         (LINK_ARCH64_SPEC, LINK_SPEC): Use LINUX_DYNAMIC_LINKER64.
2658         (TARGET_C99_FUNCTIONS): Define to TARGET_GLIBC.
2659         * config/xtensa/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2660         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2661         * doc/invoke.texi (-muclibc): Remove caveat about supported
2662         targets.
2663
2664 2006-02-17  Grigory Zagorodnev <grigory_zagorodnev@linux.intel.com>
2665
2666         * doc/cpp.texi (__TIMESTAMP__): Document.
2667
2668 2006-02-17  Roger Sayle  <roger@eyesopen.com>
2669
2670         PR middle-end/25600
2671         * fold-const.c (fold_binary): Fold (X >> C) != 0 into X < 0 when
2672         C is one less than the width of X (and related transformations).
2673         * simplify-rtx.c (simplify_unary_operation_1): Transform
2674         (neg (lt x 0)) into either (ashiftrt X C) or (lshiftrt X C)
2675         depending on STORE_FLAG_VALUE, were C is one less then the
2676         width of X.
2677
2678 2006-02-17  Daniel Berlin  <dberlin@dberlin.org>
2679
2680         Fix PR tree-optimization/26341
2681         * tree-ssa-operands.c (add_virtual_operand): Remove assert
2682         about NAME_MEMORY_TAG's.
2683
2684 2006-02-17  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
2685
2686         PR target/26255
2687         * pa.md: Create separate HI and QI move patterns for 32-bit and 64-bit
2688         with hardware float support, and software float support.  Add fcpy
2689         alternative to hardware patterns.  Add alternatives to copy between
2690         general and floating-point registers to the 32-bit pattern.
2691         * pa.c (pa_secondary_reload): Don't abort if reload tries to find a
2692         secondary reload to load a QI or HI mode constant into a floating
2693         point register.
2694         * pa32-regs.h (VALID_FP_MODE_P): Allow QImode and HImode.
2695         * pa64-regs.h (VALID_FP_MODE_P): Likewise.
2696
2697 2006-02-17  Andrew Pinski  <pinskia@physics.uc.edu>
2698
2699         PR target/26272
2700         * config/rs6000/darwin.md (load_macho_picbase_si): Add
2701         pc to the pattern.
2702         (load_macho_picbase_di): Likewise.
2703
2704 2006-02-16  Jeff Law  <law@redhat.com>
2705
2706         * tree-vrp.c (set_value_range_to_nonnegative): New function.
2707         (vrp_expr_computes_nonnegative, ssa_name_nonnegative_p): Likewise.
2708         (ssa_name_nonzero_p): Likewise.
2709         (get_value_range): Return NULL if VRP is not running.
2710         (extract_range_from_expr): Fallback to tree_expr_XXX_p if
2711         VRP routines do not discover a range.
2712         (vrp_finalize): Clear VR_VALUE to indicate VRP is not running.
2713         * tree.h (ssa_name_nonzero_p, ssa_name_nonnegative_p): Prototype.
2714         * fold-const.c (tree_expr_nonzero_p): For SSA_NAMEs, query VRP.
2715         (tree_expr_nonnegative_p): Similarly.
2716         * tree-ssa-dom.c (nonzero_vars, nonzero_vars_stack): Remove.
2717         (restore_nonzero_vars_to_original_value): Remove.
2718         (unsafe_associative_fp_binop): Remove.
2719         (tree_ssa_dominator_optimize): Remove initialization and
2720         finalization of nonzero_vars and nonzero_vars_stack.
2721         (dom_opt_initialize_block): No longer push marker on
2722         nonzero_vars_stack.
2723         (dom_opt_finalize_block): No longer call
2724         restore_nonzero_vars_to_original_value.
2725         (record_equivalences_from_phis): No longer look for
2726         nonzero PHI arguments.
2727         (cprop_into_successor_phis): No longer propagate nonzero
2728         property into PHI arguments.  Lose unused argument.  Caller
2729         updated.
2730         (record_equivalences_from_stmt): No longer record nonzero
2731         values for SSA_NAMEs.
2732         (lookup_avail_expr): No longer use nonzero_vars.
2733
2734         * stor-layout.c (set_sizetype): Set TYPE_MAX_VALUE properly
2735         for sizetype when sizetype is unsigned.
2736
2737 2006-02-16  Denis Nagorny <denis_nagorny@linux.intel.com>
2738
2739         PR rtl-optimization/25603
2740         * reload.c (reg_inc_found_and_valid_p): New. Check REG_INC note.
2741         (regno_clobbered_p): Use it. Reusing SETS argument for REG_INC case.
2742         * reload1.c (choose_reload_regs): Added call of regno_clobbered_p
2743         with new meaning of SETS.
2744
2745 2006-02-16  Joseph S. Myers  <joseph@codesourcery.com>
2746
2747         PR target/20353
2748         PR target/24578
2749         PR target/24837
2750         * config/linux.opt: New file.
2751         * config/linux.h (CHOOSE_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,
2752         LINUX_DYNAMIC_LINKER): Define.
2753         (TARGET_C99_FUNCTIONS): Define depending on TARGET_GLIBC.
2754         * config.gcc (*-*-linux*): Define extra_options.
2755         (*-*-*uclibc*): Define UCLIBC_DEFAULT.
2756         (arm*-*-linux-gnueabi): Change to arm*-*-linux-*eabi.
2757         * config/arm/linux-eabi.h (LINUX_TARGET_INTERPRETER): Change to
2758         GLIBC_DYNAMIC_LINKER.
2759         * config/arm/linux-elf.h (LINUX_TARGET_INTERPRETER): Likewise.
2760         (LINUX_TARGET_LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2761         * config/mips/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2762         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2763         * doc/invoke.texi (GNU/Linux Options): New section.
2764
2765 2006-02-16  Eric Botcazou  <ebotcazou@libertysurf.fr>
2766
2767         * config/sparc/sparc.md (setjmp): Rewrite.
2768         (setjmp_32): Delete.
2769         (setjmp_64): Likewise.
2770
2771 2006-02-16  Daniel Berlin <dberlin@dberlin.org>
2772
2773         * tree-ssa-operands.c (access_can_touch_variable): Fix typo in
2774          previous change.
2775
2776 2006-02-16  Zdenek Dvorak <dvorakz@suse.cz>
2777
2778         * loop-invariant.c (invariant_for_use, check_dependencies): Fail for
2779         read-write uses.
2780
2781 2006-02-16  Zdenek Dvorak <dvorakz@suse.cz>
2782
2783         PR rtl-optimization/26296
2784         * Makefile.in (loop-invariant.c): Add except.h dependency.
2785         * loop-invariant.c: Include except.h.
2786         (find_invariant_insn): Ignore insns satisfying can_throw_internal.
2787
2788 2005-02-16  Paul Brook  <paul@codesourcery.com>
2789
2790         * reload1.c (emit_reload_insns): Invalidate dead input registers used
2791         for reloads.
2792
2793 2006-02-16  Bernd Schmidt  <bernd.schmidt@analog.com>
2794
2795         PR rtl-optimization/25636
2796         * local-alloc.c (update_equiv_regs): Lose a bogus rtx_equal_p test
2797         when deciding whether an insn is an initializing insn.
2798
2799 2006-02-15 Daniel Berlin  <dberlin@dberlin.org>
2800
2801         * tree.c (init_ttree): Add STRUCT_FIELD_TAG handling.
2802         (tree_code_size): Ditto.
2803         * tree.h (struct tree_memory_tag): Remove parent_var.
2804         (struct tree_struct_field_tag): New.
2805         (SFT_OFFSET): New.
2806         (SFT_SIZE): New.
2807         (union tree_node): Add sft member.
2808         * tree-ssa-alias.c (get_tmt_for): Don't handle TYPE_READONLY
2809         specially here.
2810         (create_sft): Add size and offset argument, set SFT_OFFSET and
2811         SFT_SIZE.
2812         (create_overlap_variables_for): Update for SFT_OFFSET/SFT_SIZE.
2813         * treestruct.def: Add TS_STRUCT_FIELD_TAG.
2814         * tree-flow-inline.h (get_subvar_at): Update for
2815         SFT_OFFSET/SFT_SIZE.
2816         (var_can_have_subvars): Ditto.
2817         (overlap_subvar): Ditto.
2818         * print-tree.c (print_node): Print out interesting things for
2819         SFT's.
2820         * tree-flow.h (struct subvar): Remove offset and size members.
2821         * tree-ssa-operands.c (get_expr_operands): Update for
2822         get_indirect_ref_operands changes.
2823         (get_indirect_ref_operands): Call add_virtual_operand instead of
2824         add_stmt_operand.  Only recurse on base var if requested.
2825         (access_can_touch_variable): New function.
2826         (add_stmt_operand): Split virtual operand handling into ...
2827         (add_virtual_operand): Here.  Add offset, size, and for_clobber
2828         arguments.  Prune alias sets.
2829         (add_call_clobber_ops): Call add_virtual_operand.
2830
2831 2006-02-15  Jakub Jelinek  <jakub@redhat.com>
2832
2833         PR middle-end/26300
2834         * combine.c (make_extraction): Bail out if ORIG_POS is negative.
2835
2836         * tree.h (struct tree_omp_clause): Use OMP_CLAUSE_CODE rather
2837         than TREE_CODE as index into omp_clause_num_ops array.
2838
2839 2006-02-15  Uttam Pawar  <uttamp@us.ibm.com>
2840
2841         PR rtl-optimization/26184
2842         * modulo-sched.c (generate_reg_moves): Free bitmap vector
2843         uses_of_defs.
2844         * modulo-sched.c (sms_schedule): Free g_arr pointer.
2845         * modulo-sched.c (sms_schedule_by_order): Free bitmap pointers
2846         must_precede, must_follow and tobe_scheduled.
2847
2848         PR other/26147
2849         * opts.c (common_handle_option): Free new_option pointer.
2850         * df-core.c (df_analyze): Free postorder pointer.
2851
2852 2006-02-15  Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
2853
2854         * Makefile.in: Fix the examples about the use of stamps
2855
2856 2006-02-15  Michael Matz  <matz@suse.de>
2857
2858         PR middle-end/22275
2859
2860         * stor-layout.c (layout_decl): Zero-width bitfields aren't
2861         influenced by maximum_field_alignment or DECL_PACKED.
2862         (update_alignment_for_field): Ditto.
2863         (place_field): Ditto.
2864         * doc/extend.texi (<#pragma pack>, <Type Attributes>): Document
2865         this behaviour.
2866
2867 2006-02-15  Paolo Bonzini  <bonzini@gnu.org>
2868
2869         * cfg.c (dump_flow_info): Get dump flags as an additional parameter.
2870         (debug_flow_info): Pass it.
2871         * alias.c (rest_of_handle_cfg): Adjust calls to dump_flow_info.
2872         * bb-reorder.c (reorder_basic_blocks): Likewise.
2873         * cfgcleanup.c (rest_of_handle_jump2): Likewise.
2874         * cse.c (rest_of_handle_cse, rest_of_handle_cse2): Likewise.
2875         * flow.c (life_analysis, recompute_reg_usage): Likewise.
2876         * gcse.c (gcse_main, bypass_jumps): Likewise.
2877         * ifcvt.c (rest_of_handle_if_conversion): Likewise.
2878         * local-alloc.c (rest_of_handle_local_alloc): Likewise.
2879         * loop-init.c (rtl_loop_init, rtl_loop_done): Likewise.
2880         * profile.c (compute_branch_probabilities, branch_prob): Likewise.
2881         * rtl.h (dump_flow_info): Adjust prototype.
2882         * tracer.c (rest_of_handle_tracer, tracer): Likewise.
2883         * var-tracking.c (variable_tracking_main): Likewise.
2884         * passes.c (execute_todo): Obey TDF_BLOCKS for RTL.
2885         * tree-dump.c (enable_rtl_dump_file): Enable the details and blocks
2886         options.
2887
2888 2006-02-15  Marcin Dalecki <martin@dalecki.de>
2889
2890         * tree-ssa-dom.c (dom_thread_across_edge): fix tag expression
2891         construction.
2892
2893 2006-02-14  Zdenek Dvorak <dvorakz@suse.cz>
2894
2895         PR tree-optimization/26209
2896         * tree-ssa-loop.c (pass_scev_cprop): Add TODO_cleanup_cfg.
2897         * tree-cfgcleanup.c (cleanup_control_flow): Remove dead
2898         eh edges.
2899         * tree-cfg.c (replace_uses_by): Do not alter cfg.
2900
2901 2006-02-14  Roger Sayle  <roger@eyesopen.com>
2902
2903         PR middle-end/23670
2904         * fold-const.c (fold_binary) <BIT_IOR_EXPR>: Optimize (X&Y)|Y into
2905         (X,Y) and the corresponding symmetry related transformations.
2906         (fold_binary) <BIT_AND_EXPR>: Likewise, optimize (X|Y)&Y into
2907         (X,Y) and its symmetry related transformations.
2908
2909 2006-02-14  Roger Sayle  <roger@eyesopen.com>
2910
2911         * dojump.c (do_compare_rtx_and_jump): Also handle multi-word GTU
2912         and GEU.
2913
2914 2006-02-14  Adam Nemet  <anemet@caviumnetworks.com>
2915
2916         * simplify-rtx.c (simplify_subreg): Combine SUBREG and TRUNCATE.
2917
2918 2006-02-14  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
2919
2920         PR bootstrap/26053
2921         * configure.ac (HAVE_COMDAT_GROUP): Don't assume non-GNU linkers
2922         support COMDAT group.
2923         * configure: Regenerate.
2924
2925 2006-02-14  Roger Sayle  <roger@eyesopen.com>
2926
2927         PR middle-end/26279
2928         PR middle-end/26280
2929         PR middle-end/26283
2930         * dojump.c (do_compare_rtx_and_jump): Handle multi-word LE.
2931
2932 2006-02-14  Daniel Berlin  <dberlin@dberlin.org>
2933
2934         Fix PR tree-optimization/26260
2935
2936         * doc/invoke.texi (max-fields-for-field-sensitive): Document
2937         param.
2938         * params.h (MAX_FIELDS_FOR_FIELD_SENSITIVE): New.
2939         * params.def (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE): Ditto.
2940         * tree-ssa-structalias.c (create_variable_info_for): Use
2941         MAX_FIELDS_FOR_FIELD_SENSITIVE.
2942
2943 2006-02-14  Zdenek Dvorak <dvorakz@suse.cz>
2944
2945         * doc/invoke.texi (-fprefetch-loop-arrays, -fprefetch-loop-arrays-rtl):
2946         Document.
2947         * tree-ssa-loop-niter.c (number_of_iterations_ne,
2948         number_of_iterations_lt, number_of_iterations_cond): Remember the shape
2949         of the ending condition.
2950         * tree-ssa-loop-manip.c: Include params.h.
2951         (build_if_stmt, can_unroll_loop_p, determine_exit_conditions,
2952         tree_unroll_loop): New functions.
2953         * tree-pass.h (pass_loop_prefetch): Declare.
2954         * loop.c (rest_of_handle_loop_optimize): Test for
2955         -fprefetch-loop-arrays-rtl.
2956         * tree-scalar-evolution.h (affine_iv): Moved to tree-flow.h.
2957         * timevar.def (TV_TREE_PREFETCH): New timevar.
2958         * tree-ssa-loop.c (tree_ssa_loop_prefetch, gate_tree_ssa_loop_prefetch,
2959         pass_loop_prefetch): New.
2960         * tree-cfgcleanup.c: Include tree-scalar-evolution.h.
2961         (cleanup_tree_cfg_loop): Call scev_reset.
2962         * common.opt (fprefetch-loop-arrays-rtl): Add.
2963         * tree-ssa-loop-prefetch.c: New file.
2964         * tree-outof-ssa.c (struct value_expr_d): Add expr_vars field.
2965         (new_temp_expr_table): Initialize expr_vars.
2966         (free_temp_expr_table): Cleanup expr_vars.
2967         (check_replaceable, find_replaceable_in_bb): Prevent accumulating
2968         expressions from being merged into one.
2969         * tree-flow.h (affine_iv): Moved from tree-scalar-evolution.h.
2970         (struct tree_niter_desc): Add control, bound and cmp fields.
2971         (tree_ssa_prefetch_arrays, can_unroll_loop_p, tree_unroll_loop):
2972         Declare.
2973         * Makefile.in (tree-ssa-loop-prefetch.o): Add.
2974         (tree-cfgcleanup.o): Add SCEV_H dependency.
2975         (tree-ssa-loop-manip.o): Add PARAMS_H dependency.
2976         * passes.c (init_optimization_passes): Add pass_loop_prefetch.
2977
2978 2006-02-14  Richard Guenther  <rguenther@suse.de>
2979
2980         PR tree-optimization/26258
2981         * tree-ssa-structalias.c (find_func_aliases): Handle aggregates
2982         in PHI argument processing.
2983
2984 2006-02-13  Adam Nemet  <anemet@caviumnetworks.com>
2985
2986         * simplify-rtx.c (simplify_unary_operation_1) <TRUNCATE>: Return
2987         new expression in the requested machine mode.
2988
2989 2006-02-13  Roger Sayle  <roger@eyesopen.com>
2990
2991         * optabs.c (expand_abs): Don't call do_jump_by_parts_greater_rtx
2992         directly, instead let do_compare_rtx_and_jump handle this for us.
2993         * expr.c (expand_expr_real_1): Likewise.
2994         * dojump.c (do_jump_by_parts_greater_rtx): Make static.  Move
2995         before do_jump_by_parts_greater.
2996         (do_jump_by_parts_greater): Move after do_jump_by_parts_greater_rtx.
2997         * expr.h (do_jump_by_parts_greater_rtx): Delete prototype.
2998
2999 2006-02-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
3000
3001         * pa/quadlib.c: Use defines instead of enum qfcmp_magic.
3002
3003 2006-02-13  Zdenek Dvorak <dvorakz@suse.cz>
3004
3005         PR rtl-optimization/26235
3006         * loop-invariant.c (hash_invariant_expr_1): Handle 'i' and 'n' formats.
3007         (invariant_expr_equal_p): Handle 'i' and 'n' formats.  Fail on unknown
3008         format.
3009
3010 2006-02-13  Jeff Law  <law@redhat.com>
3011
3012         * tree-vrp.c (extract_range_from_binary_expr): Remove handling of
3013         TRUTH_XOR_EPR.
3014
3015 2006-02-13  Jakub Jelinek  <jakub@redhat.com>
3016
3017         PR middle-end/26092
3018         * gimplify.c (gimplify_call_expr): Don't call get_callee_fndecl
3019         twice if decl is a builtin.  When trying again, call get_callee_fndecl
3020         first to verify it is still a builtin.
3021
3022 2006-02-13  Geoffrey Keating  <geoffk@apple.com>
3023
3024         * dwarf2out.c (base_type_die): Don't add AT_name here.
3025         (subrange_type_die): Don't add AT_name here.
3026         (modified_type_die): Rearrange code flow.  Do add AT_name here.
3027
3028 2006-02-13  Zdenek Dvorak <dvorakz@suse.cz>
3029
3030         PR rtl-optimization/26247
3031         PR rtl-optimization/26248
3032         * loop-invariant.c (may_assign_reg_p): Do not allow VOIDmode.
3033
3034 2006-02-13  Richard Sandiford  <richard@codesourcery.com>
3035
3036         * config/floatunditf.c: Use if __LDBL_MANT_DIG__ == 113.
3037         * config/fixtfdi.c: Likewise.
3038         * config/fixunstfdi.c: Likewise.
3039         * config/floatditf.c: Likewise.
3040
3041 2006-02-13  Roger Sayle  <roger@eyesopen.com>
3042
3043         PR middle-end/24427
3044         * fold-const.c (fold_binary) <BIT_IOR_EXPR>: Transform (X&C1)|C2
3045         into (X,C2) if C1 is a subset of the bits of C2.  Transform
3046         (X&C1)|C2 into X|C2 if C1|C2 == ~0.  Canonicalize (X&C1)|C2 as
3047         (X&(C1&~C2))|C2.
3048         <BIT_AND_EXPR>: Canonicalize (X|C1)&C2 as (X&C2)|(C1&C2).
3049
3050 2006-02-13  Josh Conner  <jconner@apple.com>
3051
3052         PR target/25376
3053         * varasm.c (function_section): Check for section name before
3054         calling select_section on targets that define
3055         USE_SELECT_SECTION_FOR_FUNCTIONS.  On other targets, use
3056         unlikely_text_section instead of hot_function_section if
3057         first_function_block_is_cold.
3058
3059 2006-02-13  J"orn Rennecke <joern.rennecke@st.com>
3060
3061         PR middle-end/25335
3062         * reload1.c (gen_reload): Also use find_replacement in UNARY_P case.
3063
3064 2006-02-12  Zdenek Dvorak <dvorakz@suse.cz>
3065
3066         PR rtl-optimization/26222
3067         * function.c (assign_stack_temp_for_type): Do not reuse stack slots
3068         after tree->rtl expansion.
3069         * loop-invariant.c (move_invariant_reg): Use force_operand on rhs
3070         before passing it to emit_move_insn.
3071
3072 2006-02-12  Gabriel Dos Reis  <gdr@integrable-solutions.net>
3073
3074         * doc/invoke.texi (-Write-strings): Document that it is enabled by
3075         default.
3076         * c.opt (-Wwrite-strings): Declare variable warn_write_strings.
3077         Clarify documentation.
3078         * c-common.h (warn_write_strings): Remove.
3079         * c-common.c (warn_write_strings): Likewise.
3080         * c-opts.c (c_common_init_options): Enable -Wwrite-strings by
3081         default for C++.
3082
3083 2006-02-12  Roger Sayle  <roger@eyesopen.com>
3084
3085         PR middle-end/25724
3086         * dojump.c (do_jump): Call do_compare_rtx_and_jump.
3087         (do_jump_parts_zero_rtx): New function renamed from
3088         do_jump_parts_equality_rtx.  Made static.  Add a mode argument.
3089         (do_jump_parts_equality_rtx): New function split out from
3090         do_jump_parts_equality.  Old implementation renamed as above.
3091         Call do_jump_parts_zero_rtx if either operand is zero.
3092         (do_jump_parts_equality): Call do_jump_parts_equality_rtx to
3093         do all of the heavy lifting.
3094         (do_compare_rtx_and_jump): Handle multi-word comparisons by
3095         calling either do_jump_by_parts_greater_rtx or
3096         do_jump_by_parts_equality_rtx.
3097         * expr.h (do_jump_by_parts_equality_rtx): Remove prototype.
3098         * expmed.c (do_cmp_and_jump): Now multi-word optimization has
3099         moved to do_compare_rtx_and_jump, call it directly.
3100         * stmt.c (do_jump_if_equal): Remove static prototype.  Add a
3101         mode argument.  Call do_compare_rtx_and_jump.
3102         (emit_case_nodes): Update calls to do_jump_if_equal.
3103
3104 2006-02-12  Zdenek Dvorak <dvorakz@suse.cz>
3105
3106         PR rtl-optimization/26225
3107         * loop-invariant.c (may_assign_reg_p): Do not allow BLKmode operands.
3108
3109 2006-02-12  Zdenek Dvorak <dvorakz@suse.cz>
3110
3111         PR rtl-optimization/26232
3112         * loop-invariant.c (find_invariant_insn): Ignore insns that set CC0.
3113
3114 2006-02-11  Jason Merrill  <jason@redhat.com>
3115
3116         PR tree-opt/24365
3117         * tree-inline.c (declare_return_variable): Just don't use the
3118         modify target if it's a gimple complex reg and the return slot
3119         isn't.
3120
3121 2006-02-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
3122
3123         * doc/contrib.texi: Update my entry.
3124
3125 2006-02-10  Geoffrey Keating  <geoffk@apple.com>
3126
3127         * config/i386/darwin.h (DBX_REGISTER_NUMBER): Define.
3128
3129 2006-02-10  Diego Novillo  <dnovillo@redhat.com>
3130
3131         * tree-inline.c (estimate_num_insns_1): Make OpenMP directives
3132         expensive.
3133
3134 2006-02-10  Zdenek Dvorak <dvorakz@suse.cz>
3135
3136         * doc/invoke.texi (-floop-optimize2): Removed.
3137         * toplev.c (process_options): Remove handling of flag_loop_optimize2.
3138         * loop-init.c (gate_handle_loop2): Do not test flag_loop_optimize2.
3139         Test flag_branch_on_count_reg only if HAVE_doloop_end.
3140         * common.opt (floop-optimize2): Removed.
3141         (fmove-loop-invariants): Enabled by default.
3142
3143 2006-02-10  Sebastian Pop  <pop@cri.ensmp.fr>
3144
3145         * tree-if-conv.c (combine_blocks): Free the result of
3146         get_loop_exit_edges.
3147
3148 2006-02-10  Jeff Law  <law@redhat.com>
3149
3150         * fold-const.c (tree_expr_nonzero_p): Fix thinko.
3151
3152         PR tree-optimization/26213
3153         * tree-ssa-threadedge.c (simplify_control_stmt_condition): Do not
3154         loop trying to follow SSA_NAME_VALUE chains.
3155
3156 2006-02-10  Richard Guenther  <rguenther@suse.de>
3157
3158         * tree-dfa.c (get_ref_base_and_extent): When computing maxsize
3159         deal with structures that end in implicitly variable sized arrays.
3160
3161 2006-02-09  Zdenek Dvorak <dvorakz@suse.cz>
3162
3163         PR rtl-optimization/24762
3164         * df-scan.c (df_bb_refs_record): Record correct registers defined on
3165         eh edges.
3166
3167 2006-02-09  Zdenek Dvorak <dvorakz@suse.cz>
3168
3169         * tree-ssa-loop-ivopts.c (struct loop_data, loop_data): Removed.
3170         (struct ivopts_data): Add regs_used field.
3171         (tree_ssa_iv_optimize_init): Do not allocate aux fields for loops.
3172         (ivopts_global_cost_for_size, determine_set_costs): Use data->regs_used
3173         instead of loop_data->regs_used;
3174         (free_loop_data): Do not free aux fields for loops.
3175         (tree_ssa_iv_optimize): Do not pass loops to tree_ssa_iv_optimize_init
3176         and tree_ssa_iv_optimize_finalize.
3177
3178 2006-02-09  Kaz Kojima  <kkojima@gcc.gnu.org>
3179
3180         * config/sh/sh.h (FUNCTION_VALUE): Don't handle CHAR_TYPE.
3181
3182 2006-02-09  J"orn Rennecke <joern.rennecke@st.com>
3183
3184         PR target/26141
3185         * sh.c (sh_gimplify_va_arg_expr): Don't change the result type when
3186         computing the effective result type.
3187
3188 2006-02-09  J"orn Rennecke <joern.rennecke@st.com>
3189
3190         PR inline-asm/16194
3191         * tree.h (decl_overlaps_hard_reg_set_p) Don't declare.
3192         (tree_overlaps_hard_reg_set): Declare.
3193         * stmt.c (decl_overlaps_hard_reg_set_p): Now static.  Change return
3194         type and signature to match function type expected by walk_tree.
3195         (tree_overlaps_hard_reg_set): New function.
3196         (decl_conflicts_with_clobbers_p): Rename to:
3197         (tree_conflicts_with_clobbers_p).  Take HARD_REG_SET * argument.
3198         Use tree_overlaps_hard_reg_set.  Changed caller.
3199         * doc/tm.texi (TARGET_MD_ASM_CLOBBERS): Replace
3200         decl_overlaps_hard_reg_set_p with tree_overlaps_hard_reg_set.
3201         * cris.c (cris_md_asm_clobbers): Likewise.
3202
3203 2006-02-09  Bernd Schmidt  <bernd.schmidt@analog.com>
3204
3205         * reload1.c (emit_input_reload_insns): Delete code that tries to
3206         inherit using find_equiv_reg.
3207
3208 2006-02-09  Gabriel Dos Reis  <gdr@integrable-solutions.net>
3209
3210         * c-common.h (flag_const_strings): Don't declare.
3211         * c-common.c (flag_const_strings): Remove.
3212         * c.opt (fconst_strings): Remove.
3213         * c-opts.c (c_common_handle_option): Remove <OPT_fconst_strings>.
3214         <OPT_Wwrite_strings>: Don't set flag_const_strings.
3215         (c_common_init_options): Don't set flag_const_strings.
3216         * doc/invoke.texi (-fno-const-strings): Remove documentation.
3217
3218 2006-02-09  Richard Earnshaw  <richard.earnshaw@arm.com>
3219
3220         * arm.md (tlobits_cbranch): New pattern.
3221         * arm.h (arm_select_cc_mode): For thumb, only return CC_Nmode if
3222         testing a single bit.
3223
3224 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
3225
3226         PR tree-opt/26179
3227         * tree-ssa-pre.c (create_component_ref_by_pieces):
3228         Handle RETURN_DECL like VAR_DECL.
3229
3230 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
3231
3232         PR middle-end/26134
3233         * fold-const.c (fold_indirect_ref_1): Fold
3234         "*(foo *)&complexfoo" to "__real__ complexfoo"
3235         and "((foo*)&complexfoo)[1]" to "__imag__ complexfoo".
3236
3237 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
3238
3239         * tree-flow-inline.h (var_can_have_subvars):
3240         Volatile variables should not have subvariables.
3241
3242 2006-02-09  Diego Novillo  <dnovillo@redhat.com>
3243
3244         PR 26180
3245         * tree-vrp.c (vrp_int_const_binop): Detect overflow when
3246         multiplying unsigned values.
3247         Tidy comments.
3248
3249 2006-02-09  Eric Botcazou  <ebotcazou@libertysurf.fr>
3250
3251         * config/sparc/sparc.c (tls_call_delay): Fix oversight.
3252
3253 2006-02-08  Jason Merrill  <jason@redhat.com>
3254
3255         PR c++/25979
3256         * tree.def: Elaborate on difference from MODIFY_EXPR.
3257         * doc/c-tree.texi (INIT_EXPR): Likewise.
3258         * gimplify.c (internal_get_tmp_var): Use INIT_EXPR.
3259         (gimplify_decl_expr, gimplify_init_ctor_eval): Likewise.
3260         (gimplify_target_expr): Likewise.
3261         (gimplify_cond_expr): Remove target handling.
3262         (gimplify_modify_expr): Don't clobber INIT_EXPR code here.
3263         (gimplify_expr): Clobber it here.
3264         (gimplify_modify_expr_rhs): Push assignment into COND_EXPR here.
3265         Do return slot optimization if we have an INIT_EXPR.
3266
3267         PR tree-opt/24365
3268         * tree-inline.c (declare_return_variable): Also clear
3269         DECL_COMPLEX_GIMPLE_REG_P as needed in the modify_dest case.
3270
3271         PR c++/16405
3272         * gimplify.c (gimplify_modify_expr_rhs): Re-enable *& handling.
3273
3274         PR middle-end/22439
3275         * gimplify.c (gimplify_one_sizepos): Fix typo.
3276
3277 2006-02-08  Jeff Law  <law@redhat.com>
3278
3279         PR tree-optimization/21417
3280         * tree-ssa-threadedge.c (thread_across_edge): Reject threading
3281         across a backedge if the control statement at the end of the
3282         block is data dependent on other statements in the same block.
3283         (record_temporary_equivalences_from_stmts): Remove over-conservative
3284         test for threading across backedges.
3285
3286         * tree-ssa-dce.c (remove_dead_statement): When removing a dead
3287         control statement, handle all three special cases in the same
3288         manner as they all have the same desired solution.  No longer
3289         special case edge flag updating when the post dominator is
3290         the exit block.
3291
3292 2006-02-08  Roger Sayle  <roger@eyesopen.com>
3293
3294         * tree.def (CHAR_TYPE): Remove.
3295         * dbxout.c (dbxout_type): Delete dead handling of CHAR_TYPE.
3296         * dwarf2out.c (base_type_die, is_base_type): Likewise.
3297         (gen_type_die) <ARRAY_TYPE>: Remove handling of CHAR_TYPE arrays.
3298         (gen_string_type_die): Delete unreachable function.
3299
3300         * tree-pretty-print.c (dump_generic_node): Don't handle CHAR_TYPE.
3301         * tree.c (build_int_cst_wide, type_contains_placeholder_1,
3302         type_hash_eq, variably_modified_type_p, walk_type_fields): Likewise.
3303         * tree.h (NUMERICAL_TYPE_CHECK, INTEGRAL_TYPE_P): Likewise.
3304         * builtins.c (type_to_class): Likewise.
3305         * fold-const.c (fold_convert, build_range_check,
3306         merge_ranges): Likewise.
3307         * expr.c (count_type_elements): Likewise.
3308         * c-pretty-print.c (pp_c_type_specifier): Likewise.
3309         * stor-layout.c (layout_type): Likewise.
3310         * ipa-type-escape.c (type_to_consider): Likewise.
3311         * gimplify.c (omp_firstprivatize_type_sizes,
3312         gimplify_type_sizes): Likewise.
3313         * explow.c (promote_mode): Likewise.
3314         * tree-sra.c (is_sra_scalar_type): Likewise.
3315         * varasm.c (output_constant): Likewise.
3316         * tree-inline.c (remap_type_1): Likewise.
3317         * convert.c (convert_to_pointer, convert_to_real,
3318         convert_to_integer, convert_to_complex): Likewise.
3319
3320 2006-02-08  Daniel Berlin  <dberlin@dberlin.org>
3321
3322         * df-scan.c (df_def_record_1): A set destination may
3323         be a parallel regardless of mode.
3324
3325 2006-02-08  Roger Sayle  <roger@eyesopen.com>
3326
3327         PR target/22209
3328         * config/mips/mips.h (MIN_UNITS_PER_WORD): Don't define for libgcc.
3329         * config/mips/_tilib.c: Remove.
3330         * config/fixtfdi.c: New libgcc source file.
3331         * config/fixunstfdi.c: New source file.
3332         * config/floatditf.c: New source file.
3333         * config/floatunditf.c: New souce file.
3334         * config/mips/t-iris6 (LIB2FUNCS_EXTRA): Include the new source
3335         files above instead of config/mips/_tilib.c.
3336         * config/mips/t-linux64 (LIB2FUNCS_EXTRA): Likewise.
3337
3338 2006-02-08  Jeff Law  <law@redhat.com>
3339
3340         PR tree-optimization/26169
3341         * tree-vrp.c (execute_vrp): Perform any queued SSA updates before
3342         threading jumps.
3343
3344 2006-02-08  Zdenek Dvorak <dvorakz@suse.cz>
3345
3346         * df.h (DF_REG_SIZE): Return the length of the initialized
3347         part of the array.
3348
3349 2006-02-08  Nathan Sidwell  <nathan@codesourcery.com>
3350
3351         * gcc/config/m68k/lb1sf68.asm (__divsf3, __divdf3, __mulsf3,
3352         __muldf3): Return a correctly signed zero.
3353
3354 2006-02-08  Paolo Bonzini  <bonzini@gnu.org>
3355
3356         * passes.c (register_one_dump_file): Accept the current properties
3357         instead of pass number.  Adjust call to dump_register.  Remove
3358         duplicated code.
3359         (register_dump_files): Now a wrapper around...
3360         (register_dump_files_1): ... this one.  Do not modify the pass
3361         structure.
3362         (next_pass_1): Cosmetic fix.
3363         (execute_todo): Keep second parameter only.  Use curr_properties
3364         instead of fetching it from the pass structure.  Check and set
3365         last_verified.
3366         (execute_one_pass): Handle TODO_set_props.  Use curr_properties
3367         instead of fetching it from the pass structure.  Fix calls to
3368         execute_todo.  Update curr_properties and initialize .vcg RTL dump
3369         after running the pass.  Reset last_verified.
3370         * tree-dump.c (dump_files): Renumber consecutively.  Put .cgraph dump
3371         at the beginning.
3372         (FIRST_AUTO_NUMBERED_DUMP): New.
3373         (dump_register): Remove "num" parameter, assign it within the
3374         function.
3375         (get_dump_file_name): Modify template for dumps.
3376         * tree-dump.h (dump_register): Adjust prototype.
3377         * tree-pass.h (enum tree_dump_index): Move cgraph at the beginning.
3378         (PROP_trees): Add PROP_gimple_lomp.
3379         (TODO_set_props): New.
3380         * gimple-low.c (pass_lower_cf): Do not destroy PROP_gimple_lcf.
3381         * tree-eh.c (pass_lower_eh): Do not destroy PROP_gimple_leh.
3382         * cfgexpand.c (pass_expand): Destroy PROP_trees.
3383
3384 2006-02-08  Jakub Jelinek  <jakub@redhat.com>
3385
3386         * config.gcc (sparc-*-linux*): Add sparc/t-linux to tmake_file.
3387         (sparc64-*-linux*): Likewise.
3388         * config/sparc/t-linux64 (SHLIB_MAPFILES): Removed.
3389         * config/sparc/t-linux: New file.
3390         * config/sparc/libgcc-sparc-glibc.ver (__fixtfdi, __fixunstfdi,
3391         __floatditf): Export at GCC_LDBL_3.0 if -m32 -mlong-double-128.
3392         (__divtc3, __multc3, __powitf2): Export at GCC_LDBL_4.0.0 if
3393         -m32 -mlong-double-128.
3394
3395         * config.gcc (alpha*-*-linux*): Add alpha/t-linux to tmake_file.