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2006-03-17 Paul Brook <paul@codesourcery.com>
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
1 2006-03-17  Paul Brook  <paul@codesourcery.com>
2
3         * doc/install.texi: Docuemnt --with-mode.
4         * config.gcc: Add --with-mode for arm*-*-*.
5         * config/arm/arm.h (OPTION_DEFAULT_SPECS): Add "mode".
6
7 2006-03-17  J"orn Rennecke <joern.rennecke@st.com>
8
9         * sh.c (max_labelno_before_reorg): New variable.
10         (sh_reorg): Initialize it.
11         (find_barrier): Check max_labelno_before_reorg before using
12         label_to_alignment.  Take length of explicit alignment insns
13         into account.  When seeing a UNSPECV_CONST_END, return it.
14
15         * sh.c (fixup_mova): Set mode of affected label to QImode.
16         (untangle_mova): New function.
17         (find_barrier): Use it.  Check mode of label before decrementing
18         num_mova.
19         (sh_reorg): Likewise.
20         Set mode of all insns back to VOIDmode.
21
22         * sh.c (MOVA_LABELREF): New macro.
23         (mova_p, fixup_mova, sh_reorg): Use it.
24         (find_barrier, sh_reorg): Don't count num_mova back to 0 unless
25         ADDR_DIFF_VEC matches mova.
26
27 2006-03-17  Steven Bosscher  <stevenb.gcc@gmail.com>
28
29         * dwarf2asm.c (dw2_asm_output_offset): Mark 'base' argument
30         with ATTRIBUTE_UNUSED.
31
32 2006-03-17  Alexandre Oliva  <aoliva@redhat.com>
33
34         * dwarf2out.c (dwarf2out_stack_adjust): Always track the stack
35         pointer, instead of assuming it is possible to derive the
36         correct args size from a call insn.
37
38 2006-03-16  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
39
40         * rtl.h (CONST_INT_P): Define.
41         * config/vax/vax.c (print_operand_address): Use CONST_INT_P()
42         instead of GET_CODE(x) == CONST_INT.
43         (vax_rtx_costs): Likewise.
44         (vax_output_int_move): Likewise.
45         (vax_output_int_add): Likewise.
46         (legitimate_constant_address_p): Likewise.
47         (index_term_p): Likewise.
48         * config/vax/vax.h (PRINT_OPERAND): Likewise.
49         * config/vax/vax.md (and<mode>3): Likewise.
50         (ashrsi3): Likewise.
51         (extv): Likewise.
52         (movstricthi): Likewise.
53         (movstrictqi): Likewise.
54         (rotrsi3): Likewise.
55         (five unnamed insns): Likewise.
56
57 2006-03-16  Geoffrey Keating  <geoffk@apple.com>
58
59         * doc/tm.texi (SDB and DWARF): Add extra parameter to
60         ASM_OUTPUT_DWARF_OFFSET.  Use @var to indicate metavariables.
61         * dwarf2asm.h (dw2_asm_output_offset): Add section parameter.
62         * dwarf2asm.c (dw2_asm_output_offset): Add base section parameter.
63         Pass to ASM_OUTPUT_DWARF_OFFSET.
64         * dwarf2out.c (debug_frame_section): New.
65         (output_call_frame_info): Use debug_frame_section.  Pass it to
66         dw2_asm_output_offset.
67         (output_die): Pass appropriate section to dw2_asm_output_offset.
68         (output_compilation_unit_header): Likewise.
69         (output_pubnames): Likewise.
70         (output_aranges): Likewise.
71         (enum dw_val_class): Break dw_val_class_lbl_offset into
72         dw_val_class_lineptr and dw_val_class_macptr.
73         (add_AT_lbl_offset): Delete.
74         (add_AT_lineptr): New.
75         (add_AT_macptr): New.
76         (AT_lbl): Expect a lineptr or macptr.
77         (print_die): Handle dw_val_class_lineptr and dw_val_class_macptr.
78         (attr_checksum): Likewise.
79         (same_dw_val_p): Likewise.
80         (size_of_die): Likewise.
81         (value_format): Likewise.
82         (output_die): Likewise.
83         (dwarf2out_finish): Call add_AT_lineptr and add_AT_macptr instead of
84         add_AT_lbl_offset.
85         * config/i386/cygming.h (ASM_OUTPUT_DWARF_OFFSET): Add extra parameter.
86         * config/i386/i386.c (x86_file_start): Call darwin_file_start.
87         * config/darwin-protos.h (darwin_file_start): New.
88         (darwin_asm_output_dwarf_offset): New.
89         * config/ia64/ia64.h (ASM_OUTPUT_DWARF_OFFSET): Add extra parameter.
90         * config/rs6000/rs6000.c (rs6000_darwin_file_start): Call
91         darwin_file_start.
92         * config/darwin.c (darwin_emit_unwind_label): Don't output label
93         if not EH section; simplify.
94         (darwin_file_start): New.
95         (darwin_asm_output_dwarf_offset): New.
96         * config/darwin.h (DEBUG_FRAME_SECTION): In __DWARF segment,
97         mark as 'debug'.
98         (DEBUG_INFO_SECTION): Likewise.
99         (DEBUG_ABBREV_SECTION): Likewise.
100         (DEBUG_ARANGES_SECTION): Likewise.
101         (DEBUG_MACINFO_SECTION): Likewise.
102         (DEBUG_LINE_SECTION): Likewise.
103         (DEBUG_LOC_SECTION): Likewise.
104         (DEBUG_PUBNAMES_SECTION): Likewise.
105         (DEBUG_STR_SECTION): Likewise.
106         (DEBUG_RANGES_SECTION): Likewise.
107         (FRAME_BEGIN_LABEL): Must start with 'L' in debug section.
108         (ASM_OUTPUT_DWARF_OFFSET): New.
109
110 2006-03-16  Joseph S. Myers  <joseph@codesourcery.com>
111
112         * config.gcc (tm_defines): Always add to previous value rather
113         than replacing it.
114
115 2006-03-16  Richard Sandiford  <richard@codesourcery.com>
116
117         * config/mips/predicates.md (splittable_const_int_operand): New,
118         split from move_operand.
119         (splittable_symbolic_operand): New.
120         (move_operand): Add commentary.  Use splittable_const_int_operand.
121         Inline mips_atomic_symbolic_constant_p.
122         * config/mips/mips.md: Add combine splitters for handling moves
123         of splittable_const_int_operands and splittable_symbolic_operands.
124         * config/mips/mips-protos.h (mips_atomic_symbolic_constant_p): Delete.
125         (mips_split_symbol): Declare.
126         (mips_move_integer): Declare.
127         * config/mips/mips.c (mips_split_p): Make global.
128         (TARGET_MIN_ANCHOR_OFFSET): Override default.
129         (TARGET_MAX_ANCHOR_OFFSET): Likewise.
130         (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Likewise.
131         (TARGET_USE_ANCHORS_FOR_SYMBOL_P): Likewise.
132         (mips_offset_within_object_p): Handle block symbols.
133         (mips_atomic_symbolic_constant_p): Delete.
134         (mips_cannot_force_const_mem): Return false for constants that
135         mips_legitimize_move can handle.
136         (mips_use_blocks_for_constant_p): New function.
137         (mips_split_symbol): Make global.
138         (mips_move_integer): Likewise.  Add a temporary register argument.
139         (mips_legitimize_const_move): Use splittable_const_int_operand and
140         splittable_symbolic_operand.
141         (mips_use_anchors_for_symbol_p): New function.
142         * config/mips/mips.h: Protect externs with !USED_FOR_TARGET.
143         (mips_split_p): Declare.  
144
145 2006-03-16  Richard Sandiford  <richard@codesourcery.com>
146
147         * config.gcc (mips64*-*-linux*): Keep existing tm_defines.
148         (mips*-*-linux*): Likewise.
149
150 2006-03-16  Roger Sayle  <roger@eyesopen.com>
151             Daniel Speyer  <dspeyer@wam.umd.edu>
152
153         PR middle-end/18259
154         * tree-dump.c (dump_real): New function.
155         (dequeue_and_dump) <REAL_CST>: Use it to dump FP constants.
156         * Makefile.in (REAL_H): New macro for dependencies on real.h.
157         (tree-dump.o): Add $(REAL_H) to the dependencies.
158
159 2006-03-16  Roger Sayle  <roger@eyesopen.com>
160
161         PR middle-end/21781
162         * real.c (real_from_string): If the mantissa is zero, don't bother
163         parsing the exponent as the result should always be zero.
164
165 2006-03-16  Andreas Krebbel  <krebbel1@de.ibm.com>
166
167         * simplify-rtx.c (simplify_plus_minus): Simplify within CONST terms.
168
169 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
170
171         * config/ia64/ia64.c (stops_p): Added explicit initialization.
172         (ia64_first_cycle_multipass_dfa_lookahead_guard_spec,
173         ia64_h_i_d_extended, ia64_set_sched_flags, ia64_speculate_insn,
174         ia64_needs_block_p, ia64_gen_check, ia64_sched_init_global,
175         ia64_sched_finish_global): New static functions to implement
176         hooks from gcc_target.sched.
177         (spec_check_no, max_uid, pending_data_specs): New static variables.
178         (ia64_mode_to_int, ia64_gen_spec_insn, ia64_spec_check_p,
179         ia64_spec_check_src_p): New static functions.
180         (ia64_adjust_cost): Renamed to ia64_adjust_cost_2.
181         (TARGET_SCHED_ADJUST_COST): Removed.
182         (TARGET_SCHED_ADJUST_COST_2, TARGET_SCHED_INIT_GLOBAL,
183         TARGET_SCHED_FINISH_GLOBAL, TARGET_SCHED_H_I_D_EXTENDED,
184         TARGET_SCHED_SPECULATE_INSN, TARGET_SCHED_NEEDS_BLOCK_P,
185         TARGET_SCHED_GEN_CHECK,
186         TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
187         TARGET_SCHED_SET_SCHED_FLAGS): New macros.
188         (update_set_flags, group_barrier_needed, set_src_needs_barrier):
189         Fixed to handle speculation checks.
190         (rtx_needs_barrier): Fixed to handle speculative loads and
191         their checks.
192         (ia64_variable_issue): Added code to count speculative loads and their
193         checks.
194         (ia64_first_cycle_multipass_dfa_lookahead_guard): Fixed to handle
195         speculative loads.
196         (enum SPEC_MODES, enum SPEC_GEN_LD_MAP, SPEC_GEN_CHECK_OFFSET):
197         New enumerations.
198         (SPEC_GEN_EXTEND_OFFSET, SPEC_N, SPEC_GEN_CHECK_MUTATION_OFFSET):
199         New constants.
200         (ia64_ld_address_bypass_p): Fixed to handle speculative loads.
201         (ia64_reorg): Reset stops_p to NULL after it is freed.
202         * config/ia64/ia64.md (UNSPEC_LDA, UNSPEC_LDS, UNSPEC_LDSA,
203         UNSPEC_LDCCLR, UNSPEC_CHKACLR, UNSPEC_CHKS): New constants.
204         (itanium_class): chk_s renamed to chk_s_i.  New constants: chk_s_f,
205         chk_a.
206         (data_speculative, control_speculative, check_load): New attributes.
207         (mov<mode>_advanced, mov<mode>_speculative,
208         mov<mode>_speculative_advanced, zero_extend<mode>di2_advanced,
209         zero_extend<mode>di2_speculative,
210         zero_extend<mode>di2_speculative_advanced): New patterns for
211         data and control speculative loads.
212         (mov<mode>_clr, zero_extend<mode>di2_clr): New patterns for
213         check loads.
214         (advanced_load_check_clr_<mode>, speculation_check_<mode>):
215         New pattern for data and control speculation checks.
216         (MODE, MODE_FOR_EXTEND, output_a, output_s, output_sa, output_c_clr,
217         ld_reg_constr, ldc_reg_constr, chk_reg_constr, mem_constr,
218         reg_pred_prefix, ld_class, chka_class, chks_class, attr_yes):
219         Auxiliary definitions for the patterns.
220         * config/ia64/itanium1.md (1_fldc, 1_fldpc, 1_ldc, 1_chk_s_f, 1_chk_a,
221         1b_fldc, 1b_fldpc, 1b_ldc, 1b_chk_s_f, 1b_chk_a): New resource
222         constraints.
223         (1_fld, 1_fldp, 1_ld, 1b_fld, 1b_fldp, 1b_ld): Add a condition
224         for speculation.
225         (1_chk_s, 1b_chk_s): Renamed to 1_chk_s_i, 1b_chk_s_i.
226         * config/ia64/itanium2.md (2_flda, 2_fldc, 2_fldpc, 2_ldc, 2_chk_s_f,
227         2_chk_a, 2b_flda, 2b_fldc, 2b_fldpc, 2b_ldc, 2b_chk_s_f, 2b_chk_a):
228         New resource constraints.
229         (2_fld, 2_fldp, 2_ld, 2b_fld, 2b_fldp, 2b_ld): Add a condition
230         for speculation.
231         (2_chk_s, 2b_chk_s): Renamed to 2_chk_s_i, 2b_chk_s_i.
232         * config/ia64/ia64.opt (msched-br-data-spec, msched-ar-data-spec,
233         msched-control-spec, msched-br-in-data-spec, msched-ar-in-data-spec,
234         msched-in-control-spec, msched-ldc, msched-control-ldc,
235         msched-spec-verbose, msched-prefer-non-data-spec-insns,
236         msched-prefer-non-control-spec-insns,
237         msched-count-spec-in-critical-path): New flags to tune speculative
238         scheduling.
239         * doc/invoke.texi (msched-br-data-spec, msched-ar-data-spec,
240         msched-control-spec, msched-br-in-data-spec, msched-ar-in-data-spec,
241         msched-in-control-spec, msched-ldc, msched-control-ldc,
242         msched-spec-verbose, msched-prefer-non-data-spec-insns,
243         msched-prefer-non-control-spec-insns,
244         msched-count-spec-in-critical-path): Document new flags.
245
246 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
247
248         * target.h (struct spec_info_def): New opaque declaration.
249         (struct gcc_target.sched): New fields: adjust_cost_2, h_i_d_extended,
250         speculate_insn, needs_block_p, gen_check,
251         first_cycle_multipass_dfa_lookahead_guard_spec, set_sched_flags.
252         * target-def.h (TARGET_SCHED_ADJUST_COST_2,
253         TARGET_SCHED_H_I_D_EXTENDED, TARGET_SCHED_SPECULATE_INSN,
254         TARGET_SCHED_NEEDS_BLOCK_P, TARGET_SCHED_GEN_CHECK,
255         TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
256         TARGET_SCHED_SET_SCHED_FLAGS): New macros to initialize fields in
257         gcc_target.sched.
258         (TARGET_SCHED): Use new macros.
259         * rtl.h (copy_DEPS_LIST_list): New prototype.
260         * sched-int.h (struct sched_info): Change signature of new_ready field,
261         adjust all initializations. New fields: add_remove_insn,
262         begin_schedule_ready, add_block, advance_target_bb, fix_recovery_cfg,
263         region_head_or_leaf_p.
264         (struct spec_info_def): New structure declaration.
265         (spec_info_t): New typedef.
266         (struct haifa_insn_data): New fields: todo_spec, done_spec, check_spec,
267         recovery_block, orig_pat.
268         (glat_start, glat_end): New variables declaraions.
269         (TODO_SPEC, DONE_SPEC, CHECK_SPEC, RECOVERY_BLOCK, ORIG_PAT):
270         New access macros.
271         (enum SCHED_FLAGS): New constants: SCHED_RGN, SCHED_EBB,
272         DETACH_LIFE_INFO, USE_GLAT.
273         (enum SPEC_SCHED_FLAGS): New enumeration.
274         (NOTE_NOTE_BB_P): New macro.
275         (extend_dependency_caches, xrecalloc, unlink_bb_notes, add_block,
276         attach_life_info, debug_spec_status, check_reg_live): New functions.
277         (get_block_head_tail): Change signature to get_ebb_head_tail, adjust
278         all uses in ddg.c, modulo-sched.c, haifa-sched.c, sched-rgn.c,
279         sched-ebb.c
280         (get_dep_weak, ds_merge): Prototype functions from sched-deps.c .
281         * ddg.c (get_block_head_tail): Adjust all uses.
282         * modulo-sched.c (get_block_head_tail): Adjust all uses.
283         (sms_sched_info): Initialize new fields.
284         (contributes_to_priority): Removed.
285         * haifa-sched.c (params.h): New include.
286         (get_block_head_tail): Adjust all uses.
287         (ISSUE_POINTS): New macro.
288         (glat_start, glat_end): New global variables.
289         (spec_info_var, spec_info, added_recovery_block_p, nr_begin_data,
290         nr_be_in_data, nr_begin_control, nr_be_in_control, bb_header,
291         old_last_basic_block, before_recovery, current_sched_info_var,
292         rgn_n_insns, luid): New static variables.
293         (insn_cost1): New function.  Move logic from insn_cost to here.
294         (find_insn_reg_weight1): New function.  Move logic from
295         find_insn_reg_weight to here.
296         (reemit_notes, move_insn, max_issue): Change signature.
297         (move_insn1): Removed.
298         (extend_h_i_d, extend_ready, extend_global, extend_all, init_h_i_d,
299         extend_bb): New static functions to support extension of scheduler's
300         data structures.
301         (generate_recovery_code, process_insn_depend_be_in_spec,
302         begin_speculative_block, add_to_speculative_block,
303         init_before_recovery, create_recovery_block, create_check_block_twin,
304         fix_recovery_deps): New static functions to support
305         generation of recovery code.
306         (fix_jump_move, find_fallthru_edge, dump_new_block_header,
307         restore_bb_notes, move_block_after_check, move_succs): New static
308         functions to support ebb scheduling.
309         (init_glat, init_glat1, attach_life_info1, free_glat): New static
310         functions to support handling of register live information.
311         (associate_line_notes_with_blocks, change_pattern, speculate_insn,
312         sched_remove_insn, clear_priorities, calc_priorities, bb_note,
313         add_jump_dependencies): New static functions.
314         (check_cfg, has_edge_p, check_sched_flags): New static functions for
315         consistancy checking.
316         (debug_spec_status): New function to call from debugger.
317         (priority): Added code to handle speculation checks.
318         (rank_for_schedule): Added code to distinguish speculative instructions.
319         (schedule_insn): Added code to handle speculation checks.
320         (unlink_other_notes, rm_line_notes, restore_line_notes, rm_other_notes):
321         Fixed to handle ebbs.
322         (move_insn): Added code to handle ebb scheduling.
323         (max_issue): Added code to use ISSUE_POINTS of instructions.
324         (choose_ready): Added code to choose between speculative and
325         non-speculative instructions.
326         (schedule_block): Added code to handle ebb scheduling and scheduling of
327         speculative instructions.
328         (sched_init): Initialize new variables.
329         (sched_finish): Free new variables.  Print statistics.
330         (try_ready): Added code to handle speculative instructions.
331         * lists.c (copy_DEPS_LIST_list): New function.
332         * sched-deps.c (extend_dependency_caches): New function.  Move logic
333         from create_dependency_caches to here.
334         (get_dep_weak, ds_merge): Make global.
335         * genattr.c (main): Code to output prototype for
336         dfa_clear_single_insn_cache.
337         * genautomata.c (DFA_CLEAR_SINGLE_INSN_CACHE_FUNC_NAME): New macros.
338         (output_dfa_clean_insn_cache_func): Code to output
339         dfa_clear_single_insn_cache function.
340         * sched-ebb.c (target_n_insns): Remove.  Adjust all users to use
341         n_insns.
342         (can_schedule_ready_p, fix_basic_block_boundaries, add_missing_bbs):
343         Removed.
344         (n_insns, dont_calc_deps, ebb_head, ebb_tail, last_bb):
345         New static variables.
346         (begin_schedule_ready, add_remove_insn, add_block1, advance_target_bb,
347         fix_recovery_cfg, ebb_head_or_leaf_p): Implement hooks from
348         struct sched_info.
349         (ebb_sched_info): Initialize new fields.
350         (get_block_head_tail): Adjust all uses.
351         (compute_jump_reg_dependencies): Fixed to use glat_start.
352         (schedule_ebb): Code to remove unreachable last block.
353         (schedule_ebbs): Added code to update register live information.
354         * sched-rgn.c (region_sched_info): Initialize new fields.
355         (get_block_head_tail): Adjust all uses.
356         (last_was_jump): Removed.  Adjust users.
357         (begin_schedule_ready, add_remove_insn, insn_points, extend_regions,
358         add_block1, fix_recovery_cfg, advance_target_bb, region_head_or_leaf_p):
359         Implement new hooks.
360         (check_dead_notes1): New static function.
361         (struct region): New fields: dont_calc_deps, has_real_ebb.
362         (RGN_DONT_CALC_DEPS, RGN_HAS_REAL_EBB): New access macros.
363         (BB_TO_BLOCK): Fixed to handle EBBs.
364         (EBB_FIRST_BB, EBB_LAST_BB): New macros.
365         (ebb_head): New static variable.
366         (debug_regions, contributes_to_priority): Fixed to handle EBBs.
367         (find_single_block_regions, find_rgns, find_more_rgns): Initialize
368         new fields.
369         (compute_dom_prob_ps): New assertion.
370         (check_live_1, update_live_1): Fixed to work with glat_start instead of
371         global_live_at_start.
372         (init_ready_list): New assertions.
373         (can_schedule_ready_p): Split update code to begin_schedule_ready.
374         (new_ready): Add support for BEGIN_CONTROL speculation.
375         (schedule_insns): Fixed code that updates register live information
376         to handle EBBs.
377         (schedule_region): Fixed to handle EBBs.
378         (init_regions): Use extend_regions and check_dead_notes1.
379         * params.def (PARAM_MAX_SCHED_INSN_CONFLICT_DELAY,
380         PARAM_SCHED_SPEC_PROB_CUTOFF): New parameters.
381         * doc/tm.texi (TARGET_SCHED_ADJUST_COST_2, TARGET_SCHED_H_I_D_EXTENDED,
382         TARGET_SCHED_SPECULATE_INSN, TARGET_SCHED_NEEDS_BLOCK_P,
383         TARGET_SCHED_GEN_CHECK,
384         TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD_GUARD_SPEC,
385         TARGET_SCHED_SET_SCHED_FLAGS): Document.
386         * doc/invoke.texi (max-sched-insn-conflict-delay,
387         sched-spec-prob-cutoff): Document.
388
389 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
390
391         * sched-int.h (struct haifa_insn_data): New fields: resolved_deps,
392         inter_tick, queue_index.
393         (struct sched_info): Change signature of init_ready_list field.
394         Adjust all initializations.
395         (RESOLVED_DEPS): New access macro.
396         (ready_add): Remove prototype.
397         (try_ready): Add prototype.
398         * sched-rgn.c (init_ready_list): Use try_ready.
399         (schedule_region): Initialize
400         current_sched_info->{sched_max_insns_priority, queue_must_finish_empty}.
401         * sched-ebb.c (new_ready): Remove.  Adjust ebb_sched_info.
402         (init_ready_list): Use try_ready.
403         (schedule_ebb): Initialize current_sched_info->sched_max_insns_priority.
404         * lists.c (remove_list_elem): Remove `static'.
405         (remove_free_INSN_LIST_elem): New function.
406         * rtl.h (remove_list_elem, remove_free_INSN_LIST_elem): Add prototypes.
407         * haifa-sched.c (INTER_TICK, QUEUE_INDEX): New macros.
408         (INVALID_TICK, MIN_TICK, QUEUE_SCHEDULED, QUEUE_NOWHERE, QUEUE_READY):
409         New constants.
410         (readyp): New variable.
411         (queue_remove, ready_remove_insn, fix_inter_tick, fix_tick_ready,
412         change_queue_index, resolve_dep): New static functions.
413         (try_ready): New function.  Adjust callers in sched-rgn.c and
414         sched-ebb.c to use it instead of ready_add.
415         (clock_var): Move at the begining of file.
416         (rank_for_schedule): Fix typo.
417         (queue_insn): Add assertion.  Handle QUEUE_INDEX.
418         (ready_lastpos): Enforce assertion.
419         (ready_add): Make it static.  Handle QUEUE_INDEX.  Add new argument,
420         update all callers.
421         (ready_remove_first, ready_remove): Handle QUEUE_INDEX.
422         (schedule_insn): Rewrite to use try_ready and resolve_dep.
423         (queue_to_ready): Use free_INSN_LIST_list.
424         (early_queue_to_ready): Fix typo.
425         (schedule_block): Init readyp.  Move init_ready_list call after the
426         initialization of clock_var.  Fix error in rejecting insn by
427         targetm.sched.dfa_new_cycle.  Add call to fix_inter_tick.  Remove code
428         that previously corrected INSN_TICKs.  Add code for handling
429         QUEUE_INDEX.
430         (set_priorities): Fix typo.
431         (sched_init): Initialize INSN_TICK, INTER_TICK and QUEUE_INDEX.
432         Clarify comment and code that keeps current_sched_info->next_tail
433         non-null.
434
435 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
436
437         * sched-rgn.c (extend_rgns): New static function.
438         (find_rgns): Use it.
439         (gather_region_statistics, print_region_statistics): New static
440         functions.
441         * params.def (PARAM_MAX_SCHED_EXTEND_REGIONS_ITERS): New parameter.
442         * doc/invoke.texi (max-sched-extend-regions-iters): Document.
443
444 2006-03-16  Maxim Kuvyrkov <mkuvyrkov@ispras.ru>
445             Andrey Belevantsev <abel@ispras.ru>
446
447         * ddg.c (build_intra_loop_deps): Adjust add_forward_dependence call.
448         * lists.c (unused_deps_list): New variable.
449         (free_list): Add assertions to verify the proper distinguishing 
450         between INSN_LISTs and DEPS_LISTs.
451         (find_list_elem, remove_list_elem, remove_list_node): New static
452         functions.
453         (alloc_DEPS_LIST, free_DEPS_LIST, free_DEPS_LIST_node,
454         remove_free_INSN_LIST_elem, remove_free_DEPS_LIST_elem,
455         remove_free_INSN_LIST_node, remove_free_DEPS_LIST_node): New functions.
456         (alloc_INSN_LIST): Assert that the list we're working on is indeed
457         an INSN_LIST.
458         (free_INSN_LIST_node): Likewise.
459         * modulo-sched.c (current_sched_info): Initialize flags field.
460         * reg-notes.def: Exchange DEP_ANTI and DEP_OUTPUT.
461         * rtl.def (DEPS_LIST): Define.
462         * rtl.h: Declare new functions from lists.c.
463         * sched-deps.c (spec_dependency_cache): New static variable.
464         (maybe_add_or_update_back_dep_1, add_back_dep): New static functions.
465         (add_dependence): Change return type to void.  Move the logic to ...
466         (add_or_update_back_dep_1): ... here.  Handle speculative dependencies.
467         (delete_all_dependences): Add comment about forward_dependency_cache.
468         Handle spec_dependency_cache.  Handle DEPS_LISTs.
469         (fixup_sched_groups): Clarify the change of priority of output
470         and anti dependencies.
471         (sched_analyze_2): Adjust add_dependence calls to create data
472         speculative dependence.
473         (add_forward_dependence): Renamed to add_forw_dep, change prototype.
474         Adjust all callers.  Handle DEPS_LISTS.
475         (compute_forward_dependences): Use add_forw_dep.  Sort LOG_LINKs in
476         presence of speculation.
477         (init_dependency_caches, free_dependency_caches):
478         Handle spec_dependency_cache.
479         (adjust_add_sorted_back_dep, adjust_back_add_forw_dep, delete_forw_dep,
480         estimate_dep_weak, get_dep_weak, ds_merge, check_dep_status):
481         New static functions.
482         (add_or_update_back_dep, add_or_update_back_forw_dep,
483         add_back_forw_dep, delete_back_forw_dep): New functions.
484         * sched-int.h (ds_t, dw_t): New typedefs.
485         (struct sched_info): Add new field flags.
486         (struct haifa_insn_data): Add new bitfield has_internal_dep.
487         Prototype new sched-deps.c functions.
488         (HAS_INTERNAL_DEP, DEP_STATUS): New access macros.
489         (BITS_PER_DEP_STATUS, BITS_PER_DEP_WEAK, DEP_WEAK_MASK, MAX_DEP_WEAK,
490         MIN_DEP_WEAK, NO_DEP_WEAK, UNCERTAIN_DEP_WEAK, BEGIN_DATA, BE_IN_DATA,
491         BEGIN_CONTROL, BE_IN_CONTROL, BEGIN_SPEC, DATA_SPEC, CONTROL_SPEC,
492         SPECULATIVE, BE_IN_SPEC, FIRST_SPEC_TYPE, LAST_SPEC_TYPE,
493         SPEC_TYPE_SHIFT, DEP_TRUE, DEP_OUTPUT, DEP_ANTI, DEP_TYPES, HARD_DEP):
494         New constants.
495         (enum SPEC_TYPES_OFFSETS, enum DEPS_ADJUST_RESULT, enum SCHED_FLAGS):
496         New enums.
497         * sched-rgn.c (current_sched_info): Initialize flags field.
498         (schedule_insns): Initialize current_sched_info before the sched_init
499         call.
500         * sched-ebb.c (current_sched_info): Initialize flags field.
501         (add_deps_for_risky_insns): Use control_flow_insn_p instead of JUMP_P.
502         Call add_or_update_back_dep instead of add_dependence.
503         Create control speculative dependencies.
504         (schedule_insns): Initialize current_sched_info before the sched_init
505         call.
506
507 2006-03-16  Kaz Kojima  <kkojima@gcc.gnu.org>
508
509         * config/sh/linux-unwind.h (shmedia_fallback_frame_state): Set
510         fs->signal_frame.
511         (sh_fallback_frame_state): Likewise.
512
513 2006-03-15  Geoffrey Keating  <geoffk@apple.com>
514
515         * config.gcc (*-*-darwin*): Don't build crt2.o for all Darwin ports.
516         Do switch on default_use_cxa_atexit.
517         (powerpc*-*-darwin*): Build crt2.o on powerpc.
518         * config/darwin-crt3.o: New.
519         * config/darwin.h (LINK_SPEC): If -shared-libgcc, make linker default
520         to 10.3.  Pass '-multiply_defined suppress' if crt3.o is in use.
521         (STARTFILE_SPEC): Add crt3.o when -shared-libgcc and appropriate
522         OS version.
523         * config/rs6000/t-darwin: Move crt2.o building to here.
524         * config/rs6000/darwin.h (C_COMMON_OVERRIDE_OPTIONS): Update
525         Mac OS version for using __cxa_get_exception_ptr.  Don't test versions
526         of __cxa_atexit.
527
528 2006-03-15  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
529
530         * config/vax/vax.c (nonindexed_address_p): Change logical negation
531         from '! xxx' to '!xxx' for coding-style conformance.
532         * config/vax/vax.h (PCC_BITFIELD_TYPE_MATTERS): Likewise.
533         (EXTRA_CONSTRAINT): Likewise.
534         * config/vax/vax.md (four unnamed insns): Likewise.
535         
536 2006-03-15  Paul Brook  <paul@codesourcery.com>
537
538         * config/arm/arm.c (minipool_pad): New.
539         (add_minipool_forward_ref): Include pool alignment padding in address
540         calculation.
541         (push_minipool_fix): Set minipool_pad.
542         (minipool_pad): Ditto.
543
544 2006-03-15  Jan-Benedict Glaw  <jbglaw@lug-owl.de>
545
546         * config/vax/vax.c (split_quadword_operands): Use MEM_P()
547         instead of GET_CODE() == MEM and REG_P() instead of
548         GET_CODE() == REG.
549         (print_operand_address): Likewise.
550         (vax_address_cost): Likewise.
551         (vax_rtx_costs): Likewise.
552         (vax_notice_update_cc): Likewise.
553         (vax_output_int_add): Likewise.
554         (INDEX_REGISTER_P): Likewise.
555         (BASE_REGISTER_P): Likewise.
556         (nonindexed_address_p): Likewise.
557         (vax_mode_dependent_address_p): Likewise.
558         * config/vax/vax.h (EXTRA_CONSTRAINT): Likewise.
559         (PRINT_OPERAND): Likewise.
560         * config/vax/vax.md (ashlsi3): Likewise.
561         (ashlsi3): Likewise.
562         (some more unnamed insns): Likewise.
563
564 2006-03-15  Kazu Hirata  <kazu@codesourcery.com>
565
566         * tree-ssa-dce.c (EXECUTE_IF_CONTROL_DEPENDENT): Make it an
567         iterator-style macro.
568         (mark_control_dependent_edges_necessary): Update the use of
569         EXECUTE_IF_CONTROL_DEPENDENT.
570
571 2006-03-15  J"orn Rennecke <joern.rennecke@st.com>
572
573         * config/sh/predicates.md (cache_address_operand): Special.
574         (ua_address_operand): Likewise.
575
576 2006-03-15  Zdenek Dvorak <dvorakz@suse.cz>
577
578         * haifa-sched.c (unlink_other_notes, reemit_notes): Do not handle
579         loop notes.
580         * sched-deps.c (sched_analyze_insn, sched_analyze): Ditto.
581
582 2006-03-15  Andreas Schwab  <schwab@suse.de>
583
584         * gensupport.c (identify_predicable_attribute): Don't free p_false
585         when it is still in use.
586
587 2006-03-15  Eric Botcazou  <ebotcazou@libertysurf.fr>
588
589         * config.gcc (default with_cpu setting) <sparc*-*-*>: Do not modify
590         the default setting here.
591
592 2006-03-14  Steven Bosscher  <stevenb.gcc@gmail.com>
593
594         * tree-pass.h (pass_cfg): Remove.
595         * alias.c (rest_of_handle_cfg, pass_cfg): Remove.
596         * passes.c (pass_cfg): Don't run it.
597
598 2006-03-14  Kazu Hirata  <kazu@codesourcery.com>
599
600         * Makefile.in (reg-stack.o): Don't depend on gt-reg-stack.h.
601         * reg-stack.c (stack_regs_mentioned_data): Change the type to
602         VEC(char,heap) *.
603         (stack_regs_mentioned): Update the uses of
604         stack_regs_mentioned_data.  Don't access the array beyond its
605         end.
606         (reg_to_stack): Update the uses of stack_regs_mentioned_data.
607         Don't include gt-reg-stack.h.
608
609         * config/bfin/bfin.h (UNALIGNED_WORD_ASM_OP): Remove.
610         * system.h (UNALIGNED_WORD_ASM_OP): Poison.
611
612         * combine.c (UWIDE_SHIFT_LEFT_BY_BITS_PER_WORD): Remove.
613
614         PR middle-end/26684
615         * reg-stack.c (stack_regs_mentioned_data): Put it undef #ifdef
616         STACK_REGS.
617
618 2006-03-14  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
619
620         * pa/pa32-linux.h (CRT_CALL_STATIC_FUNCTION): Fix typo.
621
622 2006-03-14  Richard Guenther  <rguenther@suse.de>
623
624         PR tree-optimization/26672
625         * tree-ssa-propagate.c (set_rhs): Don't walk DEFs if not in
626         SSA form.
627
628 2006-03-14  Richard Guenther  <rguenther@suse.de>
629
630         PR tree-optimization/26667
631         * ipa-inline.c (cgraph_check_inline_limits): Walk the correct
632         node for the callees.  Always allow inlining if it will shrink
633         the function size.
634
635 2006-03-14  Richard Guenther  <rguenther@suse.de>
636
637         PR middle-end/26659
638         * builtins.c (get_pointer_alignment): Prefer alignment
639         information from decls over that from types.
640
641 2006-03-14  Andrew Pinski  <pinskia@physics.uc.edu>
642
643         PR target/26657
644         * config/darwin.h (LINK_COMMAND_SPEC): Handle -fopenmp.
645
646 2006-03-14  Joseph S. Myers  <joseph@codesourcery.com>
647
648         * config/rs6000/rs6000.opt (mdlmzb): New option.
649         (msched-prolog, msched-epilog): Use Var not Mask.
650         * doc/invoke.texi (-mdlmzb): Document.
651         * config/rs6000/rs6000.c (TARGET_DEFAULT_TARGET_FLAGS): Remove
652         MASK_SCHED_PROLOG.
653         (rs6000_override_options): Enable -mdlmzb for 405 and 440.
654         * config/rs6000/rs6000.md: Add dlmzb support for 405 and 440.
655
656 2006-03-13  Uttam Pawar  <uttamp@us.ibm.com>
657
658         PR rtl-optimization/25739
659         * bt-load.c (augment_live_range): Free tos pointer.
660
661         * gensupport.c (identify_predicable_attribute): Free
662         p_false pointer.
663         * gcov.c (create_file_names): Free name pointer.
664
665 2006-03-13  Roger Sayle  <roger@eyesopen.com>
666
667         PR middle-end/26557
668         * stmt.c (emit_case_nodes): Handle the case where the index is a
669         CONST_INT, where the comparison mode is specified by the index type.
670
671 2006-03-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
672
673         * pa/pa32-linux.h (CRT_CALL_STATIC_FUNCTION): Define when CRTSTUFFS_O
674         is defined.
675
676 2006-03-13  Richard Sandiford  <richard@codesourcery.com>
677
678         * config/mips/mips.md (*branch_fp): Use %Z2 for the condition.
679         (*branch_fp_inverted): Likewise.
680
681 2006-03-13  Jakub Jelinek  <jakub@redhat.com>
682
683         PR middle-end/25989
684         * omp-low.c (expand_omp_for_generic): Mark istart0
685         and iend0 as addressable.
686
687 2006-03-13  Jie Zhang  <jie.zhang@analog.com>
688
689         * config/bfin/uclinux.h: Define _GNU_SOURCE in CPLUSPLUS_CPP_SPEC.
690
691 2006-03-13  Jeff Law  <law@redhat.com>
692
693         * tree-vrp.c (stmt_interesting_for_vrp): Some statements with
694         virtual operands are interesting.
695         (vrp_visit_stmt): Corresponding changes.
696
697 2006-03-13  Bernd Schmidt  <bernd.schmidt@analog.com>
698
699         * config/bfin/lib1funcs.asm (___umodsi3): Use stack to save contents
700         of RETS.
701         * config/bfin/bfin.h (TARGET_CPU_CPP_BUILTINS): If
702         TARGET_ID_SHARED_LIBRARY, define __ID_SHARED_LIB__.
703         * config/bfin/crti.S: Use it instead of __PIC__.
704         * config/bfin/crtn.S: Likewise.
705
706         * config/bfin/bfin.md (call_value_symbol, sibcall_value_symbol,
707         call_symbol, sibcall_symbol): Disallow if TARGET_ID_SHARED_LIBRARY,
708         not if flag_pic.
709         Lose 'G' modifier for call operand.
710         * config/bfin/bfin.c (print_operand) <case SYMBOL_REF>: Don't
711         recognize 'G' modifier.
712
713 2006-03-13  Eric Botcazou  <ebotcazou@adacore.com>
714
715         PR middle-end/18859
716         * gimplify.c (gimplify_switch_expr): Discard empty ranges.
717         * stmt.c (expand_case): Likewise.
718
719 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
720
721         PR rtl-optimization/26254
722         * loop-invariant.c (seq_insns_valid_p): New function.
723         (move_invariant_reg): Only emit new code if it is valid.
724
725 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
726
727         * cfgrtl.c (last_loop_beg_note, back_edge_of_syntactic_loop_p):
728         Removed.
729         (force_nonfallthru_and_redirect): Do not use last_loop_beg_note.
730         (rtl_split_edge): Do not use back_edge_of_syntactic_loop_p.
731         (commit_one_edge_insertion): Do not look for loop notes.
732
733 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
734
735         * jump.c (follow_jumps): Do not check for loop notes.  Move check for
736         flag_test_coverage out of loop.
737
738 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
739
740         * final.c (shorten_branches): Remove outdated comment, and turn
741         the if branch that guards it to continue.
742
743 2006-03-13  Zdenek Dvorak <dvorakz@suse.cz>
744
745         * cfgloop.c (flow_loop_dump): Do not dump loop->invalid field.
746         * cfgloop.h (struct loop): Remove unused fields.
747
748 2006-03-13  Kazu Hirata  <kazu@codesourcery.com>
749
750         * doc/invoke.texi (-fdump-rtl-loop): Remove.
751         (-dL, -fdump-rtl-loop2): Update the dump file names 
752
753         * doc/invoke.texi: Update dump file names.
754
755 2006-03-12  Steven Bosscher  <stevenb.gcc@gmail.com>
756
757         * predict.c (estimate_probability): Remove.
758         * profile.c (rest_of_handle_branch_prob, pass_branch_prob): Remove.
759         * basic-block.h (estimate_probability): Remove prototype.
760         * passes.c (finish_optimization_passes): Dump branch prediction or
761         profiling heuristics to the .profile tree dump.
762         (init_optimization_passes): Unqueue pass_branch_prob.
763
764         * doc/invoke.texi (-fdump-rtl-bp): Remove.
765
766 2006-03-11  Steven Bosscher  <stevenb.gcc@gmail.com>
767
768         * rtl.def (LABEL_REF): Remove the field for LABEL_NEXTREF.
769         * rtl.h (LABEL_NEXTREF): Remove field accessor.
770
771 2006-03-11  Eric Botcazou  <ebotcazou@adacore.com>
772
773         * function.h (frame_offset_overflow): Declare.
774         * function.c (frame_offset_overflow): New function.
775         (assign_stack_local_1): Call it to detect that the offset overflows.
776         * cfgexpand.c (alloc_stack_frame_space): Likewise.
777
778 2006-03-11  Steven Bosscher  <stevenb.gcc@gmail.com>
779
780         * config/sh/sh.c: Include alloc-pool.h.
781         (label_ref_list_pool): New alloc pool.
782         (label_ref_list_t): New type for lists of labels.
783         (struct pool_node): Make wend a label_ref_list_t.
784         (add_constant): Use the new type, eradicate LABEL_NEXTREF
785         references.
786         (dump_table): Likewise.
787         (sh_reorg): Set up the alloc pool before using add_constant and
788         dump_table, and destroy it when finishing.
789
790 2006-03-11  Richard Sandiford  <richard@codesourcery.com>
791
792         * config/mips/mips.c: Remove redundant comment.
793
794 2006-03-10  Jason Merrill  <jason@redhat.com>
795
796         PR c/26004
797         * gimplify.c (gimplify_modify_expr_rhs): Don't do return slot opt if 
798         the target was declared 'register'.
799
800 2006-03-10  Adam Nemet  <anemet@caviumnetworks.com>
801
802         * genpreds.c (write_insn_constraint_len): Change definition of
803         insn_constraint_len to return size_t to match the declaration.
804
805 2006-03-10  DJ Delorie  <dj@redhat.com>
806
807         * config/m32c/m32c.c (m32c_const_ok_for_constraint_p): Bit numbers
808         start at zero.
809         (m32c_expand_insv): Fix test for an AND mask.
810
811 2006-03-10  Richard Guenther  <rguenther@suse.de>
812
813         PR middle-end/26565
814         * builtins.c (get_pointer_alignment): Handle component
815         references for field alignment.
816
817 2006-03-10  J"orn Rennecke <joern.rennecke@st.com>
818
819         * config.gcc (sh*-superh-elf, sh*elf (newlib)): Use newlib.h
820         when building with libgloss.
821         (sh*elf): Implement --without-fp option.
822         (sh64-superh-linux*): Don't multilib. 
823
824 2006-03-10  J"orn Rennecke <joern.rennecke@st.com>
825
826         * struct-equiv.c (rtx_equiv_p): Fix POST_MODIFY case.
827
828 2006-03-09  Andrew Pinski  <pinskia@physics.uc.edu>
829
830         * tree-ssa-phiopt.c (tree_ssa_phiopt): Add cfgchanged variable.
831         Set it when one of the replacement functions returned true.
832         Return TODO_cleanup_cfg if cfgchanged is true.
833         (pass_phiopt) <todo_flags_finish>: Remove TODO_cleanup_cfg.
834
835 2006-03-09  Adam Nemet  <anemet@caviumnetworks.com>
836
837         * combine.c (simplify_shift_const_1): Use gen_lowpart_or_truncate
838         instead of gen_lowpart.
839
840 2006-03-09  Richard Sandiford  <richard@codesourcery.com>
841
842         * config/mips/mips-protos.h (mips_output_conditional_branch): Change
843         interface.
844         (mips_output_order_conditional_branch): Declare.
845         * config/mips/mips.h (MIPS_BRANCH): New macro.
846         * config/mips/mips.c (gen_conditional_branch): Use VOIDmode
847         for the comparison.  Use gen_condjump.
848         (mips_output_conditional_branch): Rework interface to take the
849         asm templates for a direct branch and the inverse of a direct branch.
850         (mips_output_order_conditional_branch): New function.
851         (mips_builtin_branch_and_move): New function.
852         (mips_expand_builtin_compare): Use it.  Use VOIDmode for the
853         branch condition.  Use gen_single_cc as the condition for
854         __builtin_mips_upper_* or __builtin_mips_lower_*.
855         (mips_expand_builtin_bposge): Use mips_builtin_branch_and_move.
856         Use VOIDmode for the branch condition.
857         * config/mips/predicates.md (order_operator): New predicate.
858         * config/mips/mips.md (UNSPEC_SINGLE_CC): New constant.
859         (branch_fp): Rename to...
860         (*branch_fp): ...this.  Remove mode from comparison operator.
861         Use new mips_output_conditional_branch interface.
862         (branch_fp_inverted): Rename to...
863         (*branch_fp_inverted): ...this and update as for *branch_fp.
864         (*branch_zero<mode>): Rename to...
865         (*branch_order<mode>): ...this.  Remove mode from comparison operator.
866         Use mips_output_order_conditional_branch.  Only accept ordered
867         comparisons.  
868         (*branch_zero<mode>_inverted): Rename to...
869         (*branch_order<mode>_inverted): ...this and update as for
870         *branch_order<mode>.
871         (*branch_equality<mode>): Accept zero as the second operand to
872         the equality operator.  Use the new mips_output_conditional_branch
873         interface.
874         (*branch_equality<mode>_inverted): Likewise.
875         (condjump): New expander.
876         * config/mips/mips-dsp.md (mips_bposge): Remove mode from comparison
877         operator.
878         * config/mips/mips-ps-3d.md (bc1any4t, bc1any4f): Likewise.
879         (bc1any2t, bc1any2f): Likewise.
880         (single_cc): New expander.
881         (*branch_upper_lower, *branch_upper_lower_inverted): New patterns.
882
883 2006-03-09  Richard Sandiford  <richard@codesourcery.com>
884
885         * doc/md.texi: Update documentation of MIPS constraints.
886         * config/mips/constraints.md: New file.
887         * config/mips/mips.md: Include it.
888         * config/mips/mips.c (mips_char_to_class): Delete.
889         (override_options): Don't initialize mips_char_to_class.
890         * config/mips/mips.h (mips_char_to_class): Delete.
891         (REG_CLASS_FROM_LETTER): Delete.
892         (CONST_OK_FOR_LETTER_P): Delete.
893         (CONST_DOUBLE_OK_FOR_LETTER_P): Delete.
894         (EXTRA_CONSTRAINT_Y): Delete.
895         (EXTRA_CONSTRAINT_STR): Delete.
896         (CONSTRAINT_LEN): Delete.
897         (EXTRA_MEMORY_CONSTRAINT): Delete.
898
899 2006-03-09  Diego Novillo  <dnovillo@redhat.com>
900
901         * tree-cfg.c (move_block_to_fn): Remove the statements from the
902         original fn's eh regions.
903
904 2006-03-09  Eric Botcazou  <ebotcazou@adacore.com>
905
906         * fold-const.c (build_range_check): Make sure to use a valid type to
907         apply the "(c>=low) && (c<=high) into (c-low>=0) && (c-low<=high-low)"
908         transformation.
909
910         (range_predecessor): New static function.
911         (range_successor): Likewise.
912         (merge_ranges): Use them to compute predecessors and successors of
913         range bounds.
914
915 2006-03-09  Roger Sayle  <roger@eyesopen.com>
916
917         PR middle-end/26561
918         * fold-const.c (fold_div_compare): When optimizing X/C1 op C2 as
919         X op C3, consider whether C3 overflows towards +Inf or -Inf.
920
921 2006-03-08  DJ Delorie  <dj@redhat.com>
922
923         * config/m32c/addsub.md (addqi3): Disparage a0/a1.
924         (addpsi3): Expand to include memory operands.  Remove
925         reload-specific splits.
926         * config/m32c/bitops.md (bset_qi, bset_hi, bclr_qi): New.
927         (andqi3_16, andhi3_16, iorqi3_16, iorhi3_16): New.
928         (andqi3_24, andhi3_24, iorqi3_24, iorhi3_24): New.
929         (andqi3, andhi3, iorqi3, iorhi3): Convert to expanders.
930         (shift1_qi, shift1_hi, insv): New.
931         * config/m32c/cond.md (cbranchqi4, cbranchhi4): Remove.
932         (cbranch<mode>4, stzx_16, stzx_24_<mode>, stzx_reversed,
933         cmp<mode>, b<code>, s<code>, s<code>_24, movqicc, movhicc,
934         cond_to_int): New.
935         * config/m32c/m32c-protos.h: Update as needed.
936         * config/m32c/m32c.c (m32c_reg_class_from_constraint): Don't
937         default the Rcr, Rcl, Raw, and Ral constraints.  Add Ra0 and Ra1.
938         Fail for unrecognized R* constraints.
939         (m32c_cannot_change_mode_class): Be more picky about pseudos.
940         (m32c_const_ok_for_constraint_p): Add Imb, Imw, and I00.
941         (m32c_extra_constraint_p2): Allow (mem (plus (plus fb int) int)).
942         Add Sp constraint.
943         (m32c_init_libfuncs): New.
944         (m32c_legitimate_address_p): Add debug wrapper.
945         (m32c_rtx_costs): New.
946         (m32c_address_cost): New.
947         (conversions): Add 'B' prefix.
948         (m32c_print_operand): 'h' and 'H' pick lower and upper halves of
949         operands, or word regnames for QI operands.  'B' prints bit
950         position.
951         (m32c_expand_setmemhi): New.
952         (m32c_expand_movmemhi): New.
953         (m32c_expand_movstr): New.
954         (m32c_expand_cmpstr): New.
955         (m32c_prepare_shift): Shift counts are limited to 16 bits at a time.
956         (m32c_expand_neg_mulpsi3): Handle non-ints.
957         (m32c_cmp_flg_0): New.
958         (m32c_expand_movcc): New.
959         (m32c_expand_insv): New.
960         (m32c_scc_pattern): New.
961         * config/m32c/m32c.h (reg classes): Add AO_REGS and A1_REGS.  Take
962         a0/a1 out of SIregs.
963         (STORE_FLAG_VALUE): New.
964         * config/m32c/m32c.md: Add unspecs for string moves.  Define various mode and
965         code macros.
966         (no_insn): New.
967         * config/m32c/mov.md: Make constraints more liberal.
968         (zero_extendqihi2): Optimize r0/r1 case.
969         * config/m32c/muldiv.md (mulpsi3): Check for intvals.
970         * config/m32c/predicates.md (m32c_any_operand): New.
971         (m32c_nonimmediate_operand): New.
972         (m32c_hl_operand): New.
973         (m32c_r3_operand): New.
974         (ap_operand): New.
975         (ma_operand): New.
976         (memsym_operand): New.
977         (memimmed_operand): New.
978         (a_qi_operand): New.
979         (m32c_eqne_operator): New.
980         (m32c_1bit8_operand): New.
981         (m32c_1bit16_operand): New.
982         (m32c_1mask8_operand): New.
983         (m32c_1mask16_operand): New.
984         * config/m32c/blkmov.md: New file.
985         * config/m32c/t-m32c (MD_FILES): Add blkmov.
986
987 2006-03-08  Andreas Tobler  <a.tobler@schweiz.ch>
988
989         * dwarf2out.c (expand_builtin_dwarf_sp_column): Make dwarf_regnum
990         unsigned to fix signed/unsigned comparison issue in
991         DWARF2_FRAME_REG_OUT.
992         (expand_builtin_init_dwarf_reg_sizes): Make i unsigned to fix signed/
993         unsigned comparison issue in DWARF2_FRAME_REG_OUT.
994
995         * tree-ssa-operands.c (finalize_ssa_def_ops): Move the declaration
996         of ptr into the ENABLE_CHECKING section.
997
998 2006-03-08  Jeff Law  <law@redhat.com>
999
1000         * tree-vrp.c (infer_value_range): Only count pointer uses
1001         and dereferences if -fdelete-null-pointer-checks is enabled.
1002
1003         * tree-vrp.c (find_assert_locations): Infer value ranges for
1004         single use pointers, but do not create ASSERT_EXPRs for them.
1005         When a non-null range is inferred for a pointer, backwards
1006         propagate that range to other equivalent pointers through the
1007         use-def chain.
1008
1009 2006-03-08  Paolo Bonzini  <bonzini@gnu.org>
1010
1011         PR bootstrap/26500
1012         * Makefile.in (dvi, html, install-info): Invoke the corresponding
1013         language hook targets.
1014         * ada/Make-lang.in, cp/Make-lang.in, objc/Make-lang.in,
1015         objcp/Make-lang.in: Create stub rules for dvi, html, install-info
1016         if language hook targets were missing.
1017
1018 2006-03-07  Zdenek Dvorak <dvorakz@suse.cz>
1019
1020         * tree-ssa-opfinalize.h: Removed.
1021         * Makefile.in (tree-ssa-operands.o): Remove tree-ssa-opfinalize.h
1022         dependency.
1023         * tree-ssa-operands.c: Do not include tree-ssa-opfinalize.h.
1024         (ALLOC_OPTYPE, APPEND_OP_AFTER, MOVE_HEAD_AFTER, MOVE_HEAD_TO_FREELIST,
1025         INITIALIZE_USE, add_def_op, add_use_op, add_vuse_op, add_maydef_op,
1026         add_mustdef_op, finalize_ssa_def_ops, finalize_ssa_use_ops,
1027         finalize_ssa_v_may_def_ops, finalize_ssa_vuse_ops,
1028         finalize_ssa_v_must_def_ops): New.
1029
1030 2006-03-07  Kenneth Zadeck <zadeck@naturalbridge.com>
1031
1032         * df-scan.c: (df_bb_refs_record): Fix obvious typo with wrong
1033         block as parameter.
1034
1035 2006-03-07  Geoffrey Keating  <geoffk@apple.com>
1036
1037         * varasm.c (assemble_end_function): Say that 'fnname' is unused.
1038
1039         * config/i386/i386.c (ix86_delegitimize_address): Handle Darwin
1040         addresses with offsets; reorganize.
1041
1042         * dwarf2out.c (DWARF2_FRAME_REG_OUT): Move up in file.
1043         (expand_builtin_dwarf_sp_column): Call DWARF2_FRAME_REG_OUT.
1044         (expand_builtin_init_dwarf_reg_sizes): Likewise.
1045
1046 2006-03-08  David Billinghurst <David.Billinghurst@riotinto.com>
1047
1048         PR target/26588
1049         * config/i386/cygwin.h (GOMP_SELF_SPECS): Define.
1050
1051 2006-03-08  Ben Elliston  <bje@au.ibm.com>
1052
1053         * config/fp-bit.h (CMPtype): Typedef to a word mode integer.
1054
1055 2006-03-07  Aldy Hernandez  <aldyh@redhat.com>
1056
1057         PR gomp/26238
1058         * doc/passes.texi (Tree-SSA passes): Document omp lowering and
1059         expansion.
1060
1061 2006-03-07  Richard Guenther  <rguenther@suse.de>
1062
1063         PR tree-optimization/26587
1064         * tree-ssa-structalias.c (handle_ptr_arith): Handle MINUS_EXPR.
1065
1066 2006-03-07  Richard Sandiford  <richard@codesourcery.com>
1067
1068         * varasm.c (assemble_variable): Fix setting of DECL_IN_TEXT_SECTION.
1069
1070 2006-03-07  Richard Sandiford  <richard@codesourcery.com>
1071
1072         * hooks.c (hook_bool_mode_rtx_true): New function.
1073         * hooks.h (hook_bool_mode_rtx_true): Declare.
1074         * toplev.c (compile_file): Call output_shared_constant_pool.
1075         * varasm.c (shared_constant_pool): New variable.
1076         (assemble_start_function, assemble_end_function): Remove arguments
1077         from call to output_constant_pool.
1078         (create_constant_pool): New function, split out from...
1079         (init_varasm_status): ...here.
1080         (force_const_mem): Choose between the shared and per-function constant
1081         pools.  Set current_function_uses_const_pool when reusing old entries
1082         as well as when creating new ones.
1083         (mark_constant): Ignore data argument.
1084         (mark_constants): Remove pool argument.
1085         (mark_constant_pool): Likewise.  Use current_function_uses_const_pool
1086         to decide whether the function uses a constant pool.
1087         (output_constant_pool_contents): New function, split out from...
1088         (output_constant_pool): ...here.
1089         (output_shared_constant_pool): New function.
1090         (init_varasm_once): Initialize shared_constant_pool.
1091         * output.h (output_constant_pool): Delete.
1092         (output_shared_constant_pool): Declare.
1093         * config/s390/s390-protos.h (s390_output_constant_pool): Delete.
1094         * config/i386/i386.c (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Override.
1095
1096 2006-03-06  Nick Clifton  <nickc@redhat.com>
1097
1098         * config/m32r/m32r.h (OPTIMIZATION_OPTIONS): Remove reference to
1099         flag_strength_reduce.
1100
1101 2006-03-06  Ben Elliston  <bje@au.ibm.com>
1102
1103         * config.gcc: Add t-dfprules to $tmake_file for i*86-*-linux* and
1104         x86_64-*-linux* configurations.
1105
1106         * config/dfp-bit.h (CMPtype): Typedef to a word mode integer.
1107         (LIBGCC2_WORDS_BIG_ENDIAN): Define.
1108
1109 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1110
1111         * tree-ssa-threadupdate.c (rediscover_loops_after_threading):
1112         Remove.
1113         * basic-block.h: Remove the extern for
1114         rediscover_loops_after_threading.
1115
1116         * cfgloop.c (cancel_loop): Make it static.
1117         * cfgloop.h: Remove the prototype for cancel_loop.
1118
1119         * flow.c (recompute_reg_usage): Make it static.
1120         * rtl.h: Remove the prototype for recompute_reg_usage.
1121
1122         * function.c (use_return_register): Make it static.
1123         * function.h: Remove the prototype.
1124
1125 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1126
1127         * recog.c (volatile_mem_p, validate_change_maybe_volatile):
1128         Remove.
1129         * recog.h: Remove the prototype for
1130         validate_change_maybe_volatile.
1131
1132 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1133
1134         * rtlanal.c (replace_reg): Remove.
1135         * rtl.h: Remove the prototype for replace_reg.
1136
1137 2006-03-05  Kazu Hirata  <kazu@codesourcery.com>
1138
1139         * regclass.c (reg_scan_update): Remove.
1140         (reg_scan_mark_refs): Remove the last argument.
1141         * rtl.h: Remove the prototype for reg_scan_update.
1142
1143 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1144
1145         * builtins.c, c-pragma.h, c-typeck.c, cgraph.c, cgraphunit.c,
1146         combine.c, common.opt, config/dfp-bit.c, config/i386/i386.c,
1147         config/m68k/m68k.c, config/m68k/m68k.md, config/mt/mt.c,
1148         config/mt/mt.h, config/s390/s390.md, df-core.c, df-problems.c,
1149         df-scan.c, df.h, diagnostic.c, expr.c, function.h, gimplify.c,
1150         loop-invariant.c, omp-low.c, opts.c, passes.c,
1151         rtl-factoring.c, rtlanal.c, struct-equiv.c, tree-cfgcleanup.c,
1152         tree-ssa-loop-niter.c, tree-ssa-loop-prefetch.c,
1153         tree-ssa-structalias.c, tree-ssa-threadedge.c,
1154         tree-ssa-threadupdate.c, tree-vect-patterns.c,
1155         tree-vect-transform.c, tree-vectorizer.h, tree-vrp.c,
1156         unwind-dw2.c: Fix comment typos.  Follow spelling conventions.
1157
1158 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1159
1160         * dwarf2out.c (dwarf2out_add_library_unit_info): Remove.
1161         * dwarf2out.h: Remove the prototype for
1162         dwarf2out_add_library_unit_info.
1163
1164 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1165
1166         * tree.c (add_var_to_bind_expr): Remove.
1167         * tree.h: Remove the prototype for add_var_to_bind_expr.
1168
1169 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1170
1171         * regclass.c (n_non_fixed_regs): Remove.
1172         (init_reg_sets_1, globalize_reg): Remove all uses of
1173         n_non_fixed_regs.
1174         * hard-reg-set.h: Remove the extern for n_non_fixed_regs.
1175
1176 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1177
1178         * rtlanal.c (insns_safe_to_move_p): Remove.
1179         * rtl.h: Remove the prototype for insns_safe_to_move_p.
1180
1181 2006-03-04  Kazu Hirata  <kazu@codesourcery.com>
1182
1183         * expmed.c (expand_mult_add): Remove.
1184         * expr.h: Remove the prototype for expand_mult_add.
1185
1186 2006-03-04  Jakub Jelinek  <jakub@redhat.com>
1187
1188         * unwind-dw2.h (_Unwind_FrameState): Add REG_SAVED_VAL_OFFSET
1189         and REG_SAVED_VAL_EXP constants.
1190         * unwind-dw2.c (struct _Unwind_Context): Add by_value array.
1191         (_Unwind_GetGR, _Unwind_SetGR, _Unwind_GetGRPtr, _Unwind_SetGRPtr):
1192         Handle regs stored by value.
1193         (_Unwind_SetGRValue, _Unwind_GRByValue): New functions.
1194         (execute_cfa_program): Handle DW_CFA_val_offset,
1195         DW_CFA_val_offset_sf and DW_CFA_val_expression.
1196         (uw_update_context_1): Handle REG_SAVED_REG with regs stored by
1197         value specially.  Handle REG_SAVED_VAL_OFFSET and REG_SAVED_VAL_EXP.
1198         (uw_install_context_1): Handle target regs stored by value.
1199
1200 2006-03-03  Daniel Berlin  <dberlin@dberlin.org>
1201
1202         * tree-sra.c (tree_sra): Return todoflags;
1203         (generate_one_element): Set TODO_update_smt_usage if needed.
1204         (pass_sra): Remove TODO_update_smt_usage.
1205         * tree-ssa-forwprop.c (forward_propagate_addr_expr): Add some
1206         parameter.
1207         (tree_ssa_forward_propagate_single_use_vars): Return
1208         TODO_update_smt_usage if we need to update SMT usage.
1209         (pass_forwprop): Remove TODO_update_smt_usage.
1210         
1211 2006-03-03  Diego Novillo  <dnovillo@redhat.com>
1212
1213         * tree-ssa-operands.c: Tidy whitespace.  Fix spelling.
1214         (correct_use_link): Remove reference to get_stmt_operands.
1215         (update_stmt_operands): Likewise.
1216         (get_modify_expr_operands): New function factored out of
1217         parse_ssa_operands and get_expr_operands.
1218         Try to create V_MUST_DEFs for LHS by default.
1219         (get_expr_operands) <case MODIFY_EXPR>: Call
1220         get_modify_expr_operands.
1221         <case ARRAY_RANGE_REF>: Handle together with ARRAY_REF.
1222         <case BIT_FIELD_REF>: Clear opf_kill_def from FLAGS.
1223         (parse_ssa_operands) <case MODIFY_EXPR>: Call
1224         get_modify_expr_operands.
1225
1226 2006-03-03  Kazu Hirata  <kazu@codesourcery.com>
1227
1228         * tree-dfa.c (referenced_var_lookup_if_exists): Remove.
1229         * tree-flow.h: Remove the prototype for
1230         referenced_var_lookup_if_exists.
1231
1232 2006-03-03  Steve Ellcey  <sje@cup.hp.com>
1233
1234         PR rtl-optimization/26345
1235         PR target/19061
1236         * config/ia64/predicates.md (basereg_operand): Don't look in subregs.
1237
1238 2006-03-03  Roger Sayle  <roger@eyesopen.com>
1239
1240         PR tree-optimization/26524
1241         * tree-scalar-evolution.c (interpret_rhs_modify_expr): Use
1242         fold_convert to create a constant of the appropriate type.
1243
1244 2006-03-03  Richard Sandiford  <richard@codesourcery.com>
1245
1246         * doc/tm.texi: Refer to SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1247         SYMBOL_REF_IN_BLOCK_P.
1248         * doc/rtl.texi: Likewise.  Refer to SYMBOL_FLAG_HAS_BLOCK_INFO instead
1249         of SYMBOL_FLAG_IN_BLOCK.
1250         * gengtype.c (adjust_field_rtx_def): Use SYMBOL_REF_HAS_BLOCK_INFO_P
1251         instead of SYMBOL_REF_IN_BLOCK_P.
1252         * explow.c (use_anchored_address): Likewise.
1253         * rtl.c (rtx_size): Likewise.
1254         * varasm.c (create_block_symbol): Set SYMBOL_FLAG_HAS_BLOCK_INFO
1255         instead of SYMBOL_FLAG_IN_BLOCK.
1256         (make_decl_rtl): Use SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1257         SYMBOL_REF_IN_BLOCK_P.
1258         (assemble_variable): Likewise.
1259         (output_constant_def_contents): Likewise.
1260         (output_constant_pool): Likewise.
1261         (default_encode_section_info): Preserve SYMBOL_FLAG_HAS_BLOCK_INFO
1262         instead of SYMBOL_FLAG_IN_BLOCK.
1263         * rtl.h (block_symbol): Refer to SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1264         SYMBOL_REF_IN_BLOCK_P.
1265         (SYMBOL_REF_BLOCK): Likewise.
1266         (SYMBOL_REF_OFFSET): Likewise.
1267         (BLOCK_SYMBOL_CHECK): Use SYMBOL_REF_HAS_BLOCK_INFO_P instead of
1268         SYMBOL_REF_IN_BLOCK_P.
1269         (SYMBOL_FLAG_IN_BLOCK): Replace with...
1270         (SYMBOL_FLAG_HAS_BLOCK_INFO): ...this.
1271         (SYMBOL_REF_IN_BLOCK_P): Replace with...
1272         (SYMBOL_REF_HAS_BLOCK_INFO_P): ...this.
1273
1274 2006-03-03  Jakub Jelinek  <jakub@redhat.com>
1275
1276         * config/arm/unwind-arm.h (_Unwind_GetIPInfo): Fix pasto.
1277
1278 2006-03-02  Roger Sayle  <roger@eyesopen.com>
1279
1280         * simplify-rtx.c (simplify_unary_operation): When simplifying
1281         (neg (lt X 0)) into (ashiftrt X C) or (lshiftrt X C), make sure
1282         that we perform the right shift in the appropriate mode, and
1283         then extend or truncate the result to requested mode.
1284
1285 2006-03-03  Zdenek Dvorak <dvorakz@suse.cz>
1286
1287         * gengtype.c (main): Handle double_int type.
1288         * tree.h (struct tree_int_cst): Make type of int_cst double_int.
1289         * double-int.c: New file.
1290         * double-int.h: New file.
1291         * system.h: Include doubleint.h.
1292         * Makefile.in (SYSTEM_H): Include double-int.h.
1293         (double-int.o): Add.
1294
1295 2006-03-03  Joseph S. Myers  <joseph@codesourcery.com>
1296
1297         PR bootstrap/26478
1298         * Makefile.in (stmp-int-hdrs): Remove include/unwind.h before
1299         copying over it.
1300
1301 2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>
1302
1303         * tree-vrp.c (remove_range_assertions): Do not update statements
1304         unnecessarily.
1305
1306 2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>
1307
1308         * cse.c (rest_of_handle_cse): Do not pass CLEANUP_PRE_LOOP to cfg
1309         cleanup.
1310         * gcse.c (rest_of_handle_gcse): Ditto.
1311         * except.c (gate_handle_eh): Ditto.
1312         * cfgcleanup.c (rest_of_handle_jump2): Ditto.
1313         * basic-block.h (CLEANUP_PRE_LOOP): Remove.
1314
1315 2006-03-02  Eric Christopher  <echristo@apple.com>
1316
1317         * config/i386/i386.c (machopic_output_stub): Add indirection to
1318         jump.
1319
1320 2006-03-02  Zdenek Dvorak <dvorakz@suse.cz>
1321
1322         * loop.c: Removed.
1323
1324 2006-03-02  David S. Miller  <davem@sunset.davemloft.net>
1325
1326         Sun Niagara specific optimizations.
1327         * config.gcc: Recognize niagara as target.
1328         * config/sparc/sparc.h (SPARC_RELAXED_ORDERING): Mention Niagara.
1329         (TARGET_CPU_niagara): Define.
1330         (CPP_CPU64_DEFAULT_SPEC): Define __sparc_v9__ for Niagara.
1331         (ASM_CPU64_DEFAULT_SPEC): Pass -Av9b for Niagara.
1332         (CPP_CPU_SPEC): Handle -mcpu=niagara.
1333         (ASM_CPU_SPEC): Likewise.
1334         (PROCESSOR_NIAGARA): New enum entry.
1335         (REGISTER_MOVE_COST): Handle Niagara.
1336         (BRANCH_COST, PREFETCH_BLOCK, SIMULTANEOUS_PREFETCHES): Likewise.
1337         * config/sparc/sparc.c (niagara_costs): New processor_costs entry.
1338         (sparc_override_options): Recognize "niagara", set appropriate
1339         default MASK_* values for it, and align functions to 32-bytes
1340         by default just like ULTRASPARC/ULTRASPARC3.
1341         (sparc_initialize_trampoline): Handle niagara like ultrasparc.
1342         (sparc64_initialize_trampoline): Likewise.
1343         (sparc_use_sched_lookahead): Use zero for niagara.
1344         (sparc_issue_rate): Use one for niagara.
1345         * config/sparc/niagara.md: New file.
1346         * config/sparc/sparc.md: Include it.
1347         * config/sparc/sol2-bi.h (CPP_CPU64_DEFAULT_SPEC,
1348         ASM_CPU32_DEFAULT_SPEC, ASM_CPU64_DEFAULT_SPEC): Set appropriately
1349         when default cpu is niagara.
1350         (CPP_CPU_SPEC): Handle -mcpu=niagara.
1351         (ASM_CPU_SPEC): Likewise.
1352         * config/sparc/sol2.h (ASM_CPU_DEFAULT_SPEC): Set appropriately
1353         when default cpu is niagara.
1354         (ASM_CPU_SPEC): Handle -mcpu=niagara.
1355         * config/sparc/linux64.h: Handle a default of TARGET_CPU_niagara
1356         just like v9/ultrasparc/ultrasparc3.
1357         * doc/invoke.texi: Add documentation for "niagara" and improve
1358         existing documentation for ultrasparc variants.
1359
1360 2006-03-02  Diego Novillo  <dnovillo@redhat.com>
1361
1362         * tree-ssa-operands.c (update_stmt_operands): Update documentation.
1363
1364 2006-03-02  Richard Sandiford  <richard@codesourcery.com>
1365
1366         * doc/tm.texi (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Document.
1367         (ASM_OUTPUT_BSS): Describe the two ways of handling global BSS,
1368         and say that only one is needed.
1369         * doc/rtl.texi (SYMBOL_REF_BLOCK): Say that the block can be null.
1370         * target.h (have_switchable_bss_sections): New hook.
1371         * explow.c (use_anchored_address): Check that the symbol is in a block.
1372         * varasm.c (tls_comm_section, comm_section, lcomm_section)
1373         (bss_noswitch_section): New variables.
1374         (get_unnamed_section): Add SECTION_UNNAMED to the flags.
1375         (get_noswitch_section): New function.
1376         (get_block_for_section): Allow SECT to be null.
1377         (unlikely_text_section_p): Use SECTION_STYLE.
1378         (bss_initializer_p): New function.
1379         (get_variable_section): Move earlier in file.  Take a new argument,
1380         prefer_noswitch_p.  Move bss checks from assemble_variable to here.
1381         Return one of the new *_sections in such cases.
1382         (get_block_for_decl): New function, extracting some logic from
1383         use_blocks_for_decl_p.
1384         (change_symbol_section): Remove in favor of...
1385         (change_symbol_block): ...this new function.
1386         (use_blocks_for_decl_p): Remove checks now performed by
1387         get_block_for_decl.
1388         (make_decl_rtl): Use change_symbol_block and get_block_for_decl.
1389         (ASM_EMIT_LOCAL, ASM_EMIT_BSS, ASM_EMIT_COMMON): Delete in favor of...
1390         (emit_local, emit_bss, emit_common): ...these new functions.
1391         Return true if the alignment was honored.
1392         (emit_tls_common): New function.
1393         (asm_emit_uninitialised): Delete.
1394         (assemble_variable_noswitch): New function, split out from...
1395         (assemble_variable): ...here.  Don't make decisions about common
1396         variables here.  Globalize all public decls that go into non-common
1397         sections.  Check whether SYMBOL_REF_BLOCK is null.
1398         (output_constant_def_contents): Check whether SYMBOL_REF_BLOCK is null.
1399         (output_constant_pool): Likewise.
1400         (init_varasm_once): Initialize the new section variables.
1401         (have_global_bss_p): New function.
1402         (categorize_decl_for_section): Use bss_initializer_p.
1403         (switch_to_section): Use SECTION_STYLE.  Abort for SECTION_NOSWITCH.
1404         (place_block_symbol): Assert that the symbol must be in a block.
1405         * target-def.h (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): New macro.
1406         (TARGET_INITIALIZER): Include it.
1407         * rtl.h (SYMBOL_REF_BLOCK): Document the null alternative.
1408         * output.h (SECTION_STYLE_MASK, SECTION_COMMON): New macros.
1409         (SECTION_MACH_DEP): Bump by two.
1410         (SECTION_UNNAMED, SECTION_NOSWITCH): New macros.
1411         (unnamed_section): Mention SECTION_UNNAMED in comment.
1412         (named_section): Likewise SECTION_NAMED.
1413         (noswitch_section_callback): New type.
1414         (noswitch_section): New structure.
1415         (section): Add a noswitch_section alternative.
1416         (SECTION_STYLE): New macro.
1417         (tls_comm_section, comm_section, lcomm_section): Declare.
1418         (bss_noswitch_section, have_global_bss_p): Declare.
1419         * config/elfos.h (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Override.
1420         * config/iq2000/iq2000.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS):
1421         Override.
1422         * config/v850/v850.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS): Override.
1423         * config/stormy16/stormy16.c (TARGET_HAVE_SWITCHABLE_BSS_SECTIONS):
1424         Override.
1425
1426 2006-03-02  Daniel Berlin <dberlin@dberlin.org>
1427
1428         * gcc/tree-vrp.c (execute_vrp): Return value.
1429         * gcc/regrename.c (rest_of_handle_regrename): Ditto.
1430         * gcc/tree-into-ssa.c (rewrite_into_ssa): Ditto.
1431         * gcc/tree-complex.c (tree_lower_complex): Ditto.
1432         (tree_lower_complex_O0): Ditto.
1433         * gcc/tracer.c (rest_of_handle_tracer): Ditto.
1434         * gcc/postreload-gcse.c (rest_of_handle_gcse2): Ditto.
1435         * gcc/postreload.c (rest_of_handle_postreload): Ditto.
1436         * gcc/tree-tailcall.c (execute_tail_recursion): Ditto.
1437         (execute_tail_calls): Ditto.
1438         * gcc/tree-ssa-loop-ch.c (copy_loop_headers): Ditto.
1439         * gcc/tree.h (init_function_for_compilation): Ditto.
1440         * gcc/ipa-cp.c (ipcp_driver): Ditto.
1441         * gcc/tree-scalar-evolution.c (scev_const_prop): Ditto.
1442         * gcc/tree-scalar-evolution.h (scev_const_prop): Ditto.
1443         * gcc/final.c (compute_alignments): Ditto.
1444         (rest_of_handle_final): Ditto.
1445         (rest_of_handle_shorten_branches): Ditto.
1446         (rest_of_clean_state): Ditto.
1447         * gcc/omp-low.c (execute_expand_omp): Ditto.
1448         (execute_lower_omp): Ditto.
1449         * gcc/tree-ssa-dse.c (tree_ssa_dse): Ditto.
1450         * gcc/ipa-reference.c (static_execute): Ditto.
1451         * gcc/tree-ssa-uncprop.c (tree_ssa_uncprop): Ditto.
1452         * gcc/reorg.c (rest_of_handle_delay_slots): Ditto.
1453         (rest_of_handle_machine_reorg): Ditto.
1454         * gcc/cgraphunit.c (rebuild_cgraph_edges): Ditto.
1455         * gcc/flow.c (recompute_reg_usage): Ditto.
1456         (rest_of_handle_remove_death_notes): Ditto.
1457         (rest_of_handle_life): Ditto.
1458         (rest_of_handle_flow2): Ditto.
1459         * gcc/tree-ssa-copyrename.c (rename_ssa_copies): Ditto.
1460         * gcc/tree-ssa-ccp.c (do_ssa_ccp): Ditto.
1461         (do_ssa_store_ccp): Ditto.
1462         (execute_fold_all_builtins): Ditto.
1463         * gcc/mode-switching.c (rest_of_handle_mode_switching): Ditto.
1464         * gcc/modulo-sched.c (rest_of_handle_sms): Ditto.
1465         * gcc/ipa-pure-const.c (static_execute): Ditto.
1466         * gcc/cse.c (rest_of_handle_cse): Ditto.
1467         (rest_of_handle_cse2): Ditto.
1468         * gcc/web.c (rest_of_handle_web): Ditto.
1469         * gcc/tree-stdarg.c (execute_optimize_stdarg): Ditto.
1470         * gcc/tree-ssa-math-opts.c (execute_cse_reciprocals): Ditto.
1471         * gcc/tree-ssa-dom.c (tree_ssa_dominator_optimize): Ditto.
1472         * gcc/tree-nrv.c (tree_nrv): Ditto.
1473         (execute_return_slot_opt): Ditto.
1474         * gcc/tree-ssa-alias.c (compute_may_aliases): Ditto.
1475         (create_structure_vars): Ditto.
1476         * gcc/loop-init.c (rtl_loop_init): Ditto.
1477         (rtl_loop_done): Ditto.
1478         (rtl_move_loop_invariants): Ditto.
1479         (rtl_unswitch): Ditto.
1480         (rtl_unroll_and_peel_loops): Ditto.
1481         (rtl_doloop): Ditto.
1482         * gcc/gimple-low.c (lower_function_body): Ditto.
1483         (mark_used_blocks): Ditto.
1484         * gcc/tree-ssa-sink.c (execute_sink_code): Ditto.
1485         * gcc/ipa-inline.c (cgraph_decide_inlining): Ditto.
1486         (cgraph_early_inlining): Ditto.
1487         * gcc/global.c (rest_of_handle_global_alloc): Ditto.
1488         * gcc/jump.c (cleanup_barriers): Ditto.
1489         (purge_line_number_notes): Ditto.
1490         * gcc/ifcvt.c (rest_of_handle_if_conversion): Ditto.
1491         (rest_of_handle_if_after_reload): Ditto.
1492         * gcc/tree-ssa-loop.c (tree_ssa_loop_init): Ditto.
1493         (tree_ssa_loop_im): Ditto.
1494         (tree_ssa_loop_unswitch): Ditto.
1495         (tree_vectorize): Ditto.
1496         (tree_linear_transform): Ditto.
1497         (tree_ssa_loop_ivcanon): Ditto.
1498         (tree_ssa_empty_loop): Ditto.
1499         (tree_ssa_loop_bounds): Ditto.
1500         (tree_complete_unroll): Ditto.
1501         (tree_ssa_loop_prefetch): Ditto.
1502         (tree_ssa_loop_ivopts): Ditto.
1503         (tree_ssa_loop_done): Ditto.
1504         * gcc/predict.c (tree_estimate_probability): Ditto.
1505         * gcc/recog.c (split_all_insns_noflow): Ditto.
1506         (rest_of_handle_peephole2): Ditto.
1507         (rest_of_handle_split_all_insns): Ditto.
1508         * gcc/tree-eh.c (lower_eh_constructs): Ditto.
1509         * gcc/regmove.c (rest_of_handle_regmove): Ditto.
1510         (rest_of_handle_stack_adjustments): Ditto.
1511         * gcc/local-alloc.c (rest_of_handle_local_alloc): Ditto.
1512         * gcc/function.c (instantiate_virtual_regs): Ditto.
1513         (init_function_for_compilation): Ditto.
1514         (rest_of_handle_check_leaf_regs): Ditto.
1515         * gcc/gcse.c (rest_of_handle_jump_bypass): Ditto.
1516         (rest_of_handle_gcse): Ditto.
1517         * gcc/ipa-type-escape.c (type_escape_execute): Ditto.
1518         * gcc/alias.c (rest_of_handle_cfg): Ditto.
1519         * gcc/tree-if-conv.c (main_tree_if_conversion): Ditto.
1520         * gcc/profile.c (rest_of_handle_branch_prob): Ditto.
1521         * gcc/tree-ssa-phiopt.c (tree_ssa_phiopt): Ditto.
1522         * gcc/rtl-factoring.c (rest_of_rtl_seqabstr): Ditto.
1523         * gcc/bt-load.c (rest_of_handle_branch_target_load_optimize): Ditto
1524         * gcc/tree-dfa.c (find_referenced_vars): Ditto.
1525         * gcc/except.c (set_nothrow_function_flags): Ditto.
1526         (convert_to_eh_region_ranges): Ditto.
1527         (rest_of_handle_eh): Ditto.
1528         * gcc/emit-rtl.c (unshare_all_rtl): Ditto.
1529         (remove_unnecessary_notes): Ditto.
1530         * gcc/except.h (set_nothrow_function_flags): Ditto.
1531         (convert_to_eh_region_ranges): Ditto.
1532         * gcc/cfgexpand.c (tree_expand_cfg): Ditto.
1533         * gcc/tree-cfgcleanup.c (merge_phi_nodes): Ditto.
1534         * gcc/tree-ssa-pre.c (do_pre): Ditto.
1535         (execute_fre): Ditto.
1536         * gcc/cfgcleanup.c (rest_of_handle_jump): Ditto.
1537         (rest_of_handle_jump2): Ditto.
1538         * gcc/tree-sra.c (tree_sra): Ditto.
1539         * gcc/tree-mudflap.c (execute_mudflap_function_ops): Ditto.
1540         (execute_mudflap_function_decls): Ditto.
1541         * gcc/tree-ssa-copy.c (do_copy_prop): Ditto.
1542         (do_store_copy_prop): Ditto.
1543         * gcc/ipa-prop.h (ipcp_driver): Ditto.
1544         * gcc/cfglayout.c (insn_locators_initialize): Ditto.
1545         * gcc/tree-ssa-forwprop.c
1546         (tree_ssa_forward_propagate_single_use_vars): Ditto.
1547         * gcc/cfglayout.h (insn_locators_initialize): Ditto.
1548         * gcc/tree-ssa-dce.c (tree_ssa_dce): Ditto.
1549         * gcc/tree-ssa.c (execute_early_warn_uninitialized): Ditto.
1550         (execute_late_warn_uninitialized): Ditto.
1551         * gcc/rtl.h (cleanup_barriers): Ditto.
1552         (split_all_insns_noflow): Ditto.
1553         (purge_line_number_notes): Ditto.
1554         (unshare_all_rtl): Ditto.
1555         (remove_unnecessary_notes): Ditto.
1556         (recompute_reg_usage): Ditto.
1557         (variable_tracking_main): Ditto.
1558         * gcc/integrate.c (emit_initial_value_sets): Ditto.
1559         * gcc/integrate.h (emit_initial_value_sets): Ditto.
1560         * gcc/tree-optimize.c (execute_free_datastructures): Ditto
1561         (execute_free_cfg_annotations): Ditto.
1562         (execute_fixup_cfg): Ditto.
1563         (execute_cleanup_cfg_pre_ipa): Ditto.
1564         (execute_cleanup_cfg_post_optimizing): Ditto.
1565         (execute_init_datastructures): Ditto.
1566         * gcc/tree-object-size.c (compute_object_sizes): Ditto.
1567         * gcc/combine.c (rest_of_handle_combine): Ditto.
1568         * gcc/tree-outof-ssa.c (rewrite_out_of_ssa): Ditto.
1569         * gcc/bb-reorder.c (duplicate_computed_gotos): Ditto.
1570         (rest_of_handle_reorder_blocks): Ditto.
1571         (rest_of_handle_partition_blocks): Ditto.
1572         * gcc/var-tracking.c (variable_tracking_main): Ditto.
1573         * gcc/tree-profile.c (tree_profiling): Ditto.
1574         * gcc/tree-vect-generic.c (expand_vector_operations): Ditto.
1575         * gcc/reg-stack.c (rest_of_handle_stack_regs): Ditto.
1576         * gcc/sched-rgn.c (rest_of_handle_sched): Ditto.
1577         (rest_of_handle_sched2): Ditto.
1578         * gcc/basic-block.h (free_bb_insn): Ditto.
1579         * gcc/tree-ssa-structalias.c (ipa_pta_execute): Ditto.
1580         * gcc/tree-cfg.c (execute_build_cfg): Ditto.
1581         (remove_useless_stmts): Ditto.
1582         (split_critical_edges): Ditto.
1583         (execute_warn_function_return): Ditto.
1584         (execute_warn_function_noreturn): Ditto.
1585         * gcc/tree-ssa-reassoc.c (execute_reassoc): Ditto.
1586         * gcc/cfgrtl.c (free_bb_for_insn): Ditto.
1587         * gcc/passes.c (execute_one_pass): Run additional
1588         todos returned by execute function.
1589         * gcc/tree-pass.h (struct tree_opt_pass): Make execute
1590         return a value.
1591
1592 2006-03-02  Richard Guenther  <rguenther@suse.de>
1593
1594         * tree-ssa-alias.c (find_used_portions): Consider taking
1595         the address as making the variable not write-only.
1596
1597 2006-03-02  Nick Clifton  <nickc@redhat.com>
1598
1599         * config.gcc (default_use_cxa_atexit): Extend the description of
1600         this configure variable.  Set its default value to "yes" for
1601         Linux, NetBSD and ELF targets on the assumption that they will
1602         use C libraries with the __cxa_atexit function.
1603
1604 2006-03-02  Ben Elliston  <bje@au.ibm.com>
1605
1606         * config/rs6000/linux-unwind.h (frob_update_context): Mark `fs'
1607         parameter as unused to suppress a build warning.
1608
1609 2006-03-02  Ben Elliston  <bje@au.ibm.com>
1610
1611         * mklibgcc.in: Depend on config/dfp-bit.h in rules that compile
1612         config/dfp-bit.c.
1613
1614 2006-03-01  Roger Sayle  <roger@eyesopen.com>
1615
1616         PR other/26489
1617         * gthr-posix.h (__gthrw2): Define to take three parameters, the
1618         declared name, the weak reference name, and the typeof name.
1619         (__gthrw): Avoid expanding the declared name suffix.
1620         (__gthrw3): New Tru64 specific macro to simplify the OSF/1 decls.
1621
1622 2006-03-01  Jakub Jelinek  <jakub@redhat.com>
1623
1624         * dwarf2.h (DW_TAG_condition, DW_TAG_shared_type): New constants
1625         from DWARF 3.
1626         (DW_AT_description, DW_AT_binary_scale, DW_AT_decimal_scale,
1627         DW_AT_small, DW_AT_decimal_sign, DW_AT_digit_count,
1628         DW_AT_picture_string, DW_AT_mutable, DW_AT_threads_scaled,
1629         DW_AT_explicit, DW_AT_object_pointer, DW_AT_endianity,
1630         DW_AT_elemental, DW_AT_pure, DW_AT_recursive): New.
1631         (DW_OP_form_tls_address, DW_OP_call_frame_cfa, DW_OP_bit_piece): New.
1632         (DW_ATE_packed_decimal, DW_ATE_numeric_string, DW_ATE_edited,
1633         DW_ATE_signed_fixed, DW_ATE_unsigned_fixed): New.
1634         (DW_DS_unsigned, DW_DS_leading_overpunch, DW_DS_trailing_overpunch,
1635         DW_DS_leading_separate, DW_DS_trailing_separate): New.
1636         (DW_END_default, DW_END_big, DW_END_little): New.
1637         (DW_END_lo_user, DW_END_hi_user): Define.
1638         (DW_LNE_lo_user, DW_LNE_hi_user): Define.
1639         (DW_CFA_val_offset, DW_CFA_val_offset_sf, DW_CFA_val_expression): New.
1640         (DW_LANG_PLI, DW_LANG_ObjC, DW_LANG_ObjC_plus_plus, DW_LANG_UPC,
1641         DW_LANG_D): New.
1642
1643 2006-03-01  Diego Novillo  <dnovillo@redhat.com>
1644
1645         * tree.def (SYMBOL_MEMORY_TAG): Rename from TYPE_MEMORY_TAG.
1646         Update all users.
1647         * tree-pass.h (PROP_smt_usage): Rename from PROP_tmt_usage.
1648         Update all users.
1649         (TODO_update_smt_usage): Rename from TODO_update_tmt_usage.
1650         Update all users.
1651         * tree.h (SMT_USED_ALONE): Rename from TMT_USED_ALONE.
1652         Update all users.
1653         * tree-flow.h (struct var_ann_d): Rename field 'type_mem_tag'
1654         to 'symbol_mem_tag'.
1655         Update all users.
1656         * doc/tree-ssa.texi: Update documentation to reflect TMT->SMT
1657         rename.
1658
1659 2006-03-01  Roger Sayle  <roger@eyesopen.com>
1660
1661         * builtins.c (fold_builtin_copysign): Delete unreachable code.
1662
1663 2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>
1664
1665         PR target/25761
1666         * config/darwin.h (MACHOPIC_JUST_INDIRECT): Check just
1667         MACHO_DYNAMIC_NO_PIC_P.
1668         (MACHOPIC_PURE): Check flag_pic and not MACHO_DYNAMIC_NO_PIC_P.
1669
1670 2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>
1671
1672         PR target/26389
1673         * config/darwin-protos.h (darwin_asm_output_anchor):
1674         Declare.
1675         * config/darwin-sections.def (cstring_section):
1676         Add SECTION_MERGE to the flags.
1677         (literal4_section): Likewise.
1678         (literal8_section): Likewise.
1679         (objc_selector_refs_section): Likewise.
1680         (objc_cls_refs_section): Likewise.
1681         * config/darwin.c (darwin_asm_output_anchor): New
1682         function.
1683         * config/darwin.h (TARGET_ASM_OUTPUT_ANCHOR): Define.
1684
1685 2006-03-01  Daniel Berlin  <dberlin@dberlin.org>
1686
1687         Fix PR tree-optimization/26443
1688         * tree-vrp.c (pass_vrp): Add TODO_update_tmt_usage
1689         to todo and PROP_tmt_usage to properties_destroyed.
1690         * tree-ssa-ccp.c (pass_ccp): Ditto.
1691         (pass_store_ccp): Ditto.
1692         * tree-ssa-dom.c (pass_dominator): Ditto.
1693
1694 2006-03-01  Diego Novillo  <dnovillo@redhat.com>
1695
1696         * tree-ssa-operands.c: Cleanup whitespace.
1697         (get_asm_expr_operands): Move before first invocation.
1698         (get_indirect_ref_operands): Likewise.
1699         (get_tmr_operands): Likewise.
1700         (get_call_expr_operands): Likewise.
1701         (append_def): Likewise.
1702         (append_use): Likewise.
1703         (append_v_may_def): Likewise.
1704         (append_v_must_def): Likewise.
1705         (add_call_clobber_ops): Likewise.
1706         (add_call_read_ops): Likewise.
1707         (add_stmt_operand): Likewise.
1708         (add_virtual_operand): Likewise.
1709         (build_ssa_operands): Likewise.
1710
1711 2006-03-01  Andrew Pinski  <pinskia@physics.uc.edu>
1712
1713         PR middle-end/26022
1714         Revert:
1715         PR middle-end/24437
1716         * tree-ssa-ccp.c (fold_stmt): Move folding of OBJ_TYPE_REF
1717         with a call expr to ...
1718         * fold-const.c (fold_ternary) <case CALL_EXPR>: Here.
1719
1720 2006-03-01  Diego Novillo  <dnovillo@redhat.com>
1721
1722         * tree-vrp.c (extract_range_from_assert): Remove special
1723         handling for types with super-types.
1724
1725 2006-03-01  Ben Elliston  <bje@au.ibm.com>
1726
1727         * config.gcc: Add t-dfprules to $tmake_file for powerpc-*-linux*
1728         and powerpc64-*-linux* configurations.
1729         * config/t-dfprules: New file.
1730
1731         * mklibgcc.in: Add logic to handle $DFP_ENABLE and $DFP_CFLAGS.
1732         Compile dfp-bit.c from the source directory using -DWIDTH and
1733         $DFP_CFLAGS to control the compilation of that file, rather than
1734         generating width-specific versions in the build directory.
1735         * Makefile.in (libgcc.mk): Pass down DFP_ENABLE and DFP_CFLAGS.
1736         (LIBGCC_DEPS): Replace $(D32PBIT) et al with config/dfp-bit.[hc].
1737
1738 2006-02-28  Zack Weinberg  <zackw@panix.com>
1739
1740         * doc/md.texi: Avoid use of @headitem so that makeinfo <4.7
1741         continues to work.
1742
1743 2006-02-28  Eric Christopher  <echristo@apple.com>
1744
1745         * config/rs6000/darwin.h (ENABLE_STACK_EXECUTE): Define.
1746         Set up IN_LIBGCC definition of TARGET_64BIT.
1747         * config/i386/darwin.h (ENABLE_STACK_EXECUTE): Define.
1748
1749 2006-02-28  Roger Sayle  <roger@eyesopen.com>
1750
1751         PR middle-end/14752
1752         * c-common.c (c_common_truthvalue_conversion) <MINUS_EXPR,
1753         BIT_XOR_EXPR, BIT_AND_EXPR>: Delete.  Let fold optimize these
1754         cases via the construction of "expr != 0".
1755
1756 2006-02-28  Steven Bosscher  <stevenb.gcc@gmail.com>
1757
1758         * alias.c (alias_invariant, alias_invariant_size): Remove.
1759         (record_base_value): Remove.
1760         (memrefs_conflict_p): Don't look at alias_invariant.
1761         (end_alias_analysis): Don't free it.
1762         * alias.h (record_base_value): Remove prototype.
1763
1764 2006-02-28  Paolo Bonzini  <bonzini@gnu.org>
1765             Adam Nemet  <anemet@caviumnetworks.com>
1766
1767         * rtl.h (truncated_to_mode): Declare it.
1768         (struct rtl_hooks): Add reg_truncated_to_mode hook.
1769         * rtlhooks-def.h (RTL_HOOKS_REG_TRUNCATED_TO_MODE): New macro.
1770         (RTL_HOOKS_INITIALIZER): Include it.
1771         * rtlhooks.c (reg_truncated_to_mode_general): New function.
1772         * combine.c (RTL_HOOKS_REG_TRUNCATED_TO_MODE): Override to
1773         reg_truncated_to_mode.
1774         * rtlanal.c (truncated_to_mode): Define it.
1775         * simplify-rtx.c (simplify_unary_operation_1): Use it.
1776
1777 2006-02-28  Jeff Law  <law@redhat.com>
1778
1779         * tree-chrec.c (chrec_convert_aggressive): Do not eliminate
1780         conversions where TYPE_MIN_VALUE/TYPE_MAX_VALUE do not cover
1781         the range allowed by TYPE_PRECISION.
1782
1783         * tree.h (strct phi_arg_d): Remove unused NONZERO field.
1784
1785 2006-02-28  Dorit Nuzman  <dorit@il.ibm.com>
1786
1787         PR tree-optimization/26419
1788         * doc/invoke.texi (ftree-vectorizer-verbose): Add information on
1789         values of n.
1790
1791 2006-02-27  Zack Weinberg  <zackw@panix.com>
1792
1793         * doc/md.texi: Fix typo in previous change.
1794
1795 2006-02-27  Kenneth Zadeck <zadeck@naturalbridge.com>
1796
1797         * df.c: Remove.
1798
1799 2006-02-27  Zack Weinberg  <zackw@panix.com>
1800
1801         * rtl.def (define_constraint, define_register_constraint)
1802         (define_memory_constraint, define_address_constraint): New MD forms.
1803         * gensupport.c (process_rtx): Put define_constraint etc on the
1804         predicate queue.
1805         * genpreds.c (process_define_predicate): Adjust comment.  Validate
1806         the name, and call validate_exp to validate the expression.
1807         (mark_mode_tests, write_extract_subexp): Can assume correct input.
1808         (write_predicate_expr): Likewise.  NAME argument no longer necessary;
1809         all callers changed.
1810         (validate_exp, needs_variable, struct constraint_data)
1811         (constraints_by_letter_table, first_constraint, last_constraint_ptr)
1812         (FOR_ALL_CONSTRAINTS, generic_constraint_letters, const_int_constraints)
1813         (const_dbl_constraints, constraint_max_namelen)
1814         (have_register_constraints, have_memory_constraints)
1815         (have_address_constraints, have_address_constraints)
1816         (have_extra_constraints, have_const_int_constraints)
1817         (have_const_dbl_constraints, mangle, add_constraint)
1818         (process_define_constraint, process_define_register_constraint)
1819         (write_enum_constraint_num, write_lookup_constraint)
1820         (write_insn_constraint_len, write_regclass_for_constraint)
1821         (write_constraint_satisfied_p, write_insn_const_int_ok_for_constraint)
1822         (write_insn_extra_memory_constraint)
1823         (write_insn_extra_address_constraint)
1824         (write_satisfies_constraint_fns): New.
1825         (write_tm_preds_h): If we have new-style constraint definitions,
1826         prototype the functions generated from them, and define the
1827         old constraint interface (still used by generic code) in terms of
1828         those functions.
1829         (write_insn_preds_c): If we have new-style constraint definitions,
1830         generate all relevant functions from those definitions.
1831         (main): Handle define_constraint etc.
1832         * genoutput.c (struct constraint_data, indep_constraints)
1833         (mdep_constraint_letters, constraints_by_letter_table, note_constraint)
1834         (mdep_constraint_len): New data structures and functions, defined
1835         #ifdef USE_MD_CONSTRAINTS.
1836         (check_constraint_len): Don't define #ifdef USE_MD_CONSTRAINTS.
1837         (validate_insn_alternatives): If USE_MD_CONSTRAINTS is defined,
1838         use new logic to validate operand constraints against constraint
1839         definitions.
1840         (main): Process define_constraint etc. if USE_MD_CONSTRAINTS is
1841         defined.
1842         * defaults.h: If none of the old-style constraint macros are
1843         defined, define USE_MD_CONSTRAINTS; do not provide defaults for any
1844         old-style macros; and poison REG_CLASS_FROM_LETTER,
1845         CONST_OK_FOR_LETTER_P, CONST_DOUBLE_OK_FOR_LETTER_P, and
1846         EXTRA_CONSTRAINT.
1847         * recog.c (reg_fits_class_p): If cl is NO_REGS, return 0 immediately.
1848         * doc/md.texi: Document new constraint-definition mechanism and the
1849         C interface it provides.  Remove references to old mechanism
1850         elsewhere in the document.
1851         (Machine Constraints): Use pathnames relative to gcc directory,
1852         i.e. config/ARCH/FILE.  Change i386 section to refer to
1853         config/i386/predicates.md; update that section to match docstrings.
1854         * doc/tm.texi: Move all documentation of the old constraint-
1855         definition macros to their own section, clearly mark as obsolete.
1856
1857         * config/i386/predicates.md (R, q, Q, l, a, b, c, d, S, D, A, f, t)
1858         (u, y, x, Y, I, J, K, L, M, N, O, G, C, e, Z): New constraint
1859         definitions.
1860         * config/i386/i386.h (REG_CLASS_FROM_LETTER, CONST_OK_FOR_LETTER_P)
1861         (CONST_DOUBLE_OK_FOR_LETTER_P, EXTRA_CONSTRAINT): Delete.
1862         * config/i386/i386.md (*movdf_nointeger): Remove stray 'H' from
1863         constraint strings.
1864         (splits and peepholes): Use satisfies_constraint_*.
1865         * config/i386/i386.c (memory_address_length)
1866         (ix86_attr_length_immediate_default): Use satisfies_constraint_*.
1867
1868 2006-02-27  Daniel Berlin  <dberlin@dberlin.org>
1869
1870         * lambda-code.c (can_convert_to_perfect_nest): Allow any type of
1871         scalar operation to be put back into the loop.
1872
1873 2006-02-27  Jakub Jelinek  <jakub@redhat.com>
1874
1875         PR other/26208
1876         * unwind-dw2.c (struct _Unwind_Context): Add signal_frame field.
1877         (extract_cie_info): Handle S flag in augmentation string.
1878         (execute_cfa_program): If context->signal_frame, execute also
1879         fs->pc == context->ra instructions.
1880         (uw_frame_state_for): If context->signal_frame, don't subtract one
1881         from context->ra to find FDE.
1882         (uw_update_context_1): Set context->signal_frame to
1883         fs->signal_frame.
1884         (_Unwind_GetIPInfo): New function.
1885         * unwind-dw2.h (_Unwind_FrameState): Add signal_frame field.
1886         * unwind-c.c (PERSONALITY_FUNCTION): Use _Unwind_GetIPInfo instead
1887         of _Unwind_GetIP.
1888         * unwind-sjlj.c (_Unwind_GetIPInfo): New function.
1889         * unwind-generic.h (_Unwind_GetIPInfo): New prototype.
1890         * unwind-compat.c (_Unwind_GetIPInfo): New function.
1891         * libgcc-std.ver (_Unwind_GetIPInfo): Export @@GCC_4.2.0.
1892         * config/ia64/unwind-ia64.c (_Unwind_GetIPInfo): New function.
1893         * config/arm/unwind-arm.h (_Unwind_GetIPInfo): Define.
1894         * config/i386/linux-unwind.h (x86_fallback_frame_state,
1895         x86_64_fallback_frame_state): Set fs->signal_frame.
1896         * config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Likewise.
1897         (MD_FROB_UPDATE_CONTEXT): Define unconditionally.
1898         (frob_update_context): Likewise.  Workaround missing S flag in
1899         Linux 2.6.12 - 2.6.16 kernel vDSOs.
1900         * config/s390/linux-unwind.h (s390_fallback_frame_state): Likewise.
1901         Remove the psw_addr + 1 hack.
1902
1903 2006-02-27  Daniel Berlin  <dberlin@dberlin.org>
1904
1905         * tree-ssa-structalias.c (get_constraint_for): Move code to deal
1906         with aggregates here.
1907         (find_func_aliases): Remove code for &<aggregate> from here.
1908
1909 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1910
1911         * fold-const.c (fold_binary) <EQ_EXPR>:  Fold (~X & C) eq/ne 0 as
1912         (X & C) ne/eq 0, where C is a single bit, i.e. a power of two.
1913         Fold both "((X & C) ^ C) eq/ne 0" and "((X ^ C) & C) eq/ne 0"
1914         as (X & C) ne/eq 0.
1915
1916 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1917
1918         PR middle-end/19983
1919         * real.c (real_nan): Allow both 0x and 0X as hexadecimal prefixes.
1920
1921 2006-02-26  Zdenek Dvorak <dvorakz@suse.cz>
1922
1923         * opts.c (decode_options): Do not handle flag_strength_reduce.
1924         (common_handle_option): Handle OPT_floop_optimize, OPT_frerun_loop_opt
1925         and OPT_fstrength_reduce.
1926         * tree-ssa-loop.c (tree_ssa_loop_prefetch): Only test
1927         flag_prefetch_loop_arrays for being nonzero.
1928         * common.opt (floop-optimize, frerun-loop-opt): Resurrected as
1929         no-ops.
1930         (fprefetch-loop-arrays-rtl): Removed.
1931         (flag_prefetch_loop_arrays): Do not specify the value.
1932
1933         * doc/passes.texi: Update documentation of loop optimizer
1934         passes.
1935         * doc/invoke.texi (-fstrength-reduce, -fprefetch-loop-arrays-rtl,
1936         -frerun-loop-opt): Remove.
1937
1938 2006-02-26  Richard Guenther  <rguenther@suse.de>
1939
1940         PR tree-optimization/26421
1941         * tree-ssa-alias.c (find_used_portions): Don't treat parameters
1942         in function calls that are ADDR_EXPRs as using the whole structure.
1943
1944 2006-02-26  Steven Bosscher  <stevenb.gcc@gmail.com>
1945
1946         * common.opt (-floop-optimize, -frerun-loop-opt): Remove.
1947         * tree-pass.h (pass_loop_optimize): Remove.
1948         * passes.c (pass_loop_optimize): Never run it.
1949         * toplev.c (backend_init): Don't call init_loop.
1950         * opts.c (flag_loop_optimize_set): Remove.
1951         (decode_options): Never set flag_loop_optimize or flag_rerun_loop_opt.
1952         (common_handle_option) <OPT_floop_optimize>: Remove.  Don't disable
1953         the old RTL loop optimizer when profiling enabled.
1954         * predict.c (tree_estimate_probability): Always strip builtin_expect.
1955         * cfgcleanup.c (try_forward_edges): Don't avoid killing loop
1956         pre-headers for the sake of the old RTL loop optimizer.
1957         * Makefile.in: Remove all references to loop.o.
1958
1959         * doc/invoke.texi: Remove all references to -floop-optimize
1960         and -frerun-loop-opt.
1961
1962 2006-02-26  Zack Weinberg  <zackw@panix.com>
1963
1964         * doc/md.texi (Machine Constraints): Refer to all files with paths
1965         relative to gcc directory (i.e. config/CPU/file).  Add missing
1966         @table @code ... @end table to M32C subsection.
1967
1968 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1969
1970         * fold-const.c (fold_binary) <BIT_XOR_EXPR>: Fold (X & 1) ^ 1 as
1971         (X & 1) == 0.
1972         <BIT_AND_EXPR>: Fold (X ^ 1) & 1 and ~X & 1 as (X & 1) == 0.
1973
1974 2006-02-26  Roger Sayle  <roger@eyesopen.com>
1975             James A. Morrison  <phython@gcc.gnu.org>
1976
1977         PR middle-end/21137
1978         * fold-const.c (fold_binary) <EQ_EXPR>:  Fold ((X>>C1)&C2) eq/ne 0,
1979         when C2 is a power of two, as either (X&(C2<<C1)) eq/ne 0 if the
1980         new constant C2<<C1, or as (X<0) or (X,false) depending upon the
1981         signedness of the shift operation.
1982
1983 2006-02-26  Dorit Nuzman  <dorit@il.ibm.com>
1984
1985         PR tree-optimization/26359
1986         * tree-ssa-alias.c (new_type_alias): Set fields for new tag.
1987
1988 2006-02-25  Roger Sayle  <roger@eyesopen.com>
1989
1990         * simplify-rtx.c (simplify_relational_operation_1):  Simplify
1991         (X^Y) == 0 as X == Y and (X^Y) != 0 as X != Y.  Simplify (X^Y) == Y
1992         as X == 0, and some symmetry related transformations.
1993         Simplify (X^C1) == C2 as X == (C1^C2).  Split long comment line.
1994
1995 2006-02-25  Roger Sayle  <roger@eyesopen.com>
1996
1997         PR middle-end/23673
1998         * fold-const.c (fold_binary) <EQ_EXPR>:  Fold (X^Y) == 0 as X == Y
1999         and (X^Y) != 0 as X != Y.  Fold (X^Y) == Y as X == 0, and some
2000         symmetry related transformations.  Fold (X^C1) == C2 as
2001         X == (C1^C2).
2002
2003 2006-02-25  Juergen Weigert  <jw@suse.de>
2004         Richard Guenther  <rguenther@suse.de>
2005
2006         * scan-decls.c (scan_decls): Don't fetch new statement after CPP_EOF.
2007
2008 2006-02-24  Adam Nemet  <anemet@caviumnetworks.com>
2009
2010         * combine.c (gen_lowpart_or_truncate): Call
2011         simplify_gen_unary(TRUNCATE, ...) instead of gen_rtx_TRUNCATE.
2012
2013 2006-02-24  Diego Novillo  <dnovillo@redhat.com>
2014
2015         * doc/invoke.texi: Move -fopenmp description to "Options for
2016         Code Generation".
2017         Remove reference to -lgomp.
2018
2019 2006-02-24  David Edelsohn  <edelsohn@gnu.org>
2020
2021         * doc/install.texi: Require GNU tar version 1.14.
2022
2023 2006-02-24  Geoffrey Keating  <geoffk@apple.com>
2024
2025         * doc/tm.texi (Run-time Target): Document C_COMMON_OVERRIDE_OPTIONS.
2026         * doc/invoke.texi (C++ Dialect Options): Document
2027         -fno-use-cxa-get-exception-ptr.
2028         * configure.ac: Define DEFAULT_USE_CXA_ATEXIT to 2 not 1.
2029         * configure: Regenerate.
2030         * c.opt (fuse-cxa-get-exception-ptr): New.
2031         * c-opts.c (c_common_handle_option): Handle
2032         OPT_fuse_cxa_get_exception_ptr.
2033         * c-common.c (flag_use_cxa_atexit): Update documentation.
2034         (flag_use_cxa_get_exception_ptr): New.
2035         * c-common.h (flag_use_cxa_get_exception_ptr): New.
2036         * config/rs6000/darwin.h (SUBTARGET_OVERRIDE_OPTIONS): Improve
2037         documentation.
2038         (C_COMMON_OVERRIDE_OPTIONS): New.
2039
2040 2006-02-24  Roger Sayle  <roger@eyesopen.com>
2041
2042         PR middle-end/24952
2043         * combine.c (try_combine): Explicitly check whether GET_CODE is
2044         a SET or a CLOBBER, instead on checking that it isn't a USE.
2045
2046 2006-02-24  Roger Sayle  <roger@eyesopen.com>
2047
2048         * fold-const.c (fold_comparison): New subroutine of fold_binary
2049         containing transformations common to both the equality and
2050         ordering relational operators, factored out of fold_binary.
2051         (fold_binary): Separate out the equality operators (EQ_EXPR
2052         and NE_EXPR) from the ordering operators (LT_EXPR, GT_EXPR,
2053         LE_EXPR and GE_EXPR), calling fold_comparison to perform the
2054         transformations common to both.
2055         (fold_div_compare): Fix latent bugs in the previously unreachable
2056         LT_EXPR and GE_EXPR cases.
2057
2058 2006-02-24  David Edelsohn  <edelsohn@gnu.org>
2059
2060         * config/rs6000/rs6000.c (rs6000_init_builtins): Change
2061         decl libname for clog to __clog on AIX.
2062
2063         * config/rs6000/xcoff.h (MAX_OFILE_ALIGNMENT): Define.
2064
2065 2006-02-24  Alan Modra  <amodra@bigpond.net.au>
2066
2067         PR target/26453
2068         * config/rs6000/rs6000.c (rs6000_output_function_epilogue): Don't
2069         output traceback table for thunks.  Localise rs6000_stack_info call.
2070
2071 2006-02-23  Roger Sayle  <roger@eyesopen.com>
2072             Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
2073
2074         * gthr-posix.h (__gthrw): Fix typo in comment.
2075
2076 2006-02-23  Geoffrey Keating  <geoffk@apple.com>
2077
2078         * doc/cpp.texi (Character sets): Document that we do support
2079         input files to be in any character set.
2080
2081 2006-02-23  Jeff Law  <law@redhat.com>
2082
2083         * tree.h (PHI_ARG_NONZERO): Remove.
2084         * tree-phinodes.c (add_phi_arg): No longer initialize PHI_ARG_NONZERO.
2085         (remove_phi_arg_num): No longer copy PHI_ARG_NONZERO from the old
2086         node to the new node.
2087
2088         PR tree-optimization/26425
2089         * tree-vrp.c (vrp_visit_assignment): If the LHS's type has a NULL
2090         min/max, then assume its varying.
2091
2092 2006-02-23  Zdenek Dvorak <dvorakz@suse.cz>
2093
2094         PR rtl-optimization/26316
2095         * rtlanal.c (enum may_trap_p_flags): New.
2096         (may_trap_p_1): Take flags instead of unaligned_mems argument.  Ignore
2097         MEM_NOTRAP_P if flags & MTP_AFTER_MOVE.
2098         (may_trap_p, may_trap_or_fault_p): Pass flags to may_trap_p_1.
2099         (may_trap_after_code_motion_p): New function.
2100         * loop-invariant.c (find_identical_invariants): Fix dump formating.
2101         (find_invariant_insn): Use may_trap_after_code_motion_p.
2102         * rtl.h (may_trap_after_code_motion_p): Declare.
2103
2104 2006-02-23  Zdenek Dvorak <dvorakz@suse.cz>
2105
2106         * emit-rtl.c (immed_double_const): Cleanup.
2107
2108 2006-02-23  Daniel Berlin  <dberlin@dberlin.org>
2109
2110         Fix PR tree-optimization/26376
2111         * tree-ssa-structalias.c (find_func_aliases):  Use get_id_for_tree,
2112         remove assert.
2113
2114 2006-02-23  Jakub Jelinek  <jakub@redhat.com>
2115
2116         PR middle-end/26412
2117         * gimplify.c (omp_add_variable): Guard variable size decl test with
2118         DECL_SIZE (decl) check.
2119
2120 2006-02-23  Richard Guenther  <rguenther@suse.de>
2121
2122         PR middle-end/26439
2123         * tree-ssa-structalias.c (find_func_aliases): Handle complex types
2124         like aggregate types.
2125
2126 2006-02-23  Jakub Jelinek  <jakub@redhat.com>
2127
2128         * configure.ac: Add --with{,out}-long-double-128 configure option.
2129         (TARGET_DEFAULT_LONG_DOUBLE_128): New test.
2130         * configure: Rebuilt.
2131         * config.in: Rebuilt.
2132         * doc/install.texi (Options specification): Document
2133         --with-long-double-128.
2134
2135         * config/rs6000/linux.h [TARGET_DEFAULT_LONG_DOUBLE_128]
2136         (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
2137         * config/rs6000/linux64.h [TARGET_DEFAULT_LONG_DOUBLE_128]
2138         (RS6000_DEFAULT_LONG_DOUBLE_SIZE): Define to 128.
2139
2140 2006-02-23  Aldy Hernandez  <aldyh@redhat.com>
2141
2142         * config/s390/s390.c (override_options): Handle
2143         TARGET_DEFAULT_LONG_DOUBLE_128.
2144
2145         * config/alpha/alpha.c (override_options): Handle
2146         TARGET_DEFAULT_LONG_DOUBLE_128.
2147
2148         * config/sparc/sparc.c (sparc_override_options): Handle
2149         TARGET_DEFAULT_LONG_DOUBLE_128.
2150
2151 2006-02-22  Daniel Jacobowitz  <dan@codesourcery.com>
2152
2153         * Makefile.in (stmp-fixinc): Use real-$(INSTALL_HEADERS_DIR).
2154         (real-install-headers-tar, real-install-headers-cpio)
2155         (real-install-headers-cp): New targets.
2156
2157 2006-02-22  Richard Sandiford  <richard@codesourcery.com>
2158
2159         * tree.h (variable_section): Delete.
2160         * varasm.c (variable_section): Delete.
2161
2162 2006-02-22  Paolo Bonzini  <bonzini@gnu.org>
2163
2164         * install.texi: Add notes on install.texi2html.
2165         (Building in parallel): Do not use footnotes.
2166
2167 2006-02-21  Aldy Hernandez  <aldyh@redhat.com>
2168
2169         PR libgomp/26234
2170         * doc/install.texi (Configuration): Document --disable-libgomp.
2171
2172 2006-02-21  Geoffrey Keating  <geoffk@apple.com>
2173
2174         * config/i386/darwin.h (DWARF2_FRAME_REG_OUT): New.
2175
2176 2006-02-21  Alexandre Oliva  <aoliva@redhat.com>
2177
2178         * config/i386/sse.md (vec_extractv2df_1_sse): New.
2179         (vec_extractv2df_0_sse): New.
2180
2181 2006-02-21  Alexandre Oliva  <aoliva@redhat.com>
2182
2183         * defaults.h (CFA_FRAME_BASE_OFFSET): Define.
2184         * config/ia64/ia64.h (CFA_FRAME_BASE_OFFSET): Override.
2185         * doc/tm.texi (CFA_FRAME_BASE_OFFSET): Document.
2186         * dwarf2out.c (build_cfa_loc): New offset parameter.  Add it
2187         to the result of the expression.
2188         (def_cfa_1): Adjust.
2189         (frame_pointer_cfa_offset): Rename to...
2190         (frame_pointer_fb_offset): ... this.  Adjust all uses.
2191         (convert_cfa_to_loc_list): Rename to...
2192         (convert_cfa_to_fb_loc_list): ... this.  New offset parameter.
2193         Pass it on to build_cfa_loc.
2194         (compute_frame_pointer_to_cfa_displacement): Rename to...
2195         (compute_frame_pointer_to_fb_displacement): ... this.  New
2196         offset parameter.  Use it in computation.
2197         (gen_subprogram_die): Compute cfa_fb_offset with the new
2198         macro, and use it to compute the fb loc list and the
2199         displacement.
2200
2201 2006-02-21  Bernd Schmidt  <bernd.schmidt@analog.com>
2202
2203         * config/bfin/predicates.md (cc_operand): Delete predicate.  All uses
2204         replaced with register_operand.
2205         * config/bfin/bfin.c (bfin_register_move_cost): Moving CC to any
2206         non-DREG is expensive.
2207         * config/bfin/bfin.h (FIXED_REGISTERS): CC isn't fixed.
2208         * config/bfin/bfin.md (movbi): Fix constraints and template for moves
2209         involving memory.
2210
2211 2006-02-21  Joseph S. Myers  <joseph@codesourcery.com>
2212
2213         * doc/install.texi2html: Use set -e.
2214
2215 2006-02-21  Richard Sandiford  <richard@codesourcery.com>
2216
2217         * doc/tm.texi (ASM_OUTPUT_SHARED_COMMON, ASM_OUTPUT_SHARED_BSS)
2218         (ASM_OUTPUT_SHARED_LOCAL): Delete.
2219         * doc/invoke.texi (-fshared-data): Delete.
2220         * common.opt (fshared-data): Delete.
2221         * varasm.c (asm_emit_uninitialised): Remove flag_shared_data handling.
2222         (assemble_static_space): Remove #if 0 code.
2223         * system.h (ASM_OUTPUT_SHARED_COMMON, ASM_OUTPUT_SHARED_BSS)
2224         (ASM_OUTPUT_SHARED_LOCAL): Poison.
2225         * config/cris/cris.h: Remove FIXME.
2226
2227 2006-02-21  Paolo Bonzini  <bonzini@gnu.org>
2228
2229         * doc/sourcebuild.texi (Front End Directory): No more double-colon
2230         hooks.
2231
2232 2006-02-21  Jakub Jelinek  <jakub@redhat.com>
2233
2234         PR middle-end/26379
2235         * combine.c (simplify_shift_const_1): Disable nested shifts
2236         optimization for vector shifts.
2237
2238 2006-02-20  Roger Sayle  <roger@eyesopen.com>
2239
2240         PR tree-optimization/26361
2241         * tree-vrp.c (extract_range_from_unary_expr): Handle NEGATE_EXPR
2242         of unsigned integer types.
2243
2244 2006-02-20  Sebastian Pop  <pop@cri.ensmp.fr>
2245
2246         * tree-chrec.c (eq_evolutions_p): New.
2247         * tree-chrec.h (eq_evolutions_p): Declared.
2248         * tree-data-ref.c: Fix formatting.
2249         (datadep_stats, dependence_stats): New.
2250         (gcd): Moved...
2251         (print_direction_vector): New.
2252         (dump_data_dependence_relation): Use print_direction_vector.
2253         (object_analysis, create_data_ref): Handle COMPONENT_REF.
2254         (compute_subscript_distance): Static.
2255         (initialize_data_dependence_relation): Static.  Get the number
2256         of loops surrounding the references from the callers, and initialize
2257         DDR_SIZE_VECT to nb_loops.  Use both base_addr_differ_p and
2258         base_object_differ_p analyzers.
2259         (analyze_ziv_subscript, analyze_siv_subscript_cst_affine,
2260         compute_overlap_steps_for_affine_1_2,
2261         analyze_subscript_affine_affine): Count the classified dependences.
2262         Print a message when a test failed.
2263         (can_use_analyze_subscript_affine_affine): New.
2264         (analyze_siv_subscript): Compute the data dependences on symbolic
2265         scevs that verify can_use_analyze_subscript_affine_affine.
2266         (chrec_steps_divide_constant_p): Returns true, false, or unknown.
2267         (analyze_miv_subscript): Update use of chrec_steps_divide_constant_p.
2268         Handle symbolic scevs.
2269         (analyze_overlapping_iterations): Let symbolic affine scevs to be
2270         analyzed.
2271         (subscript_dependence_tester): Moved...
2272         (build_classic_dist_vector, build_classic_dir_vector): Don't use
2273         lambda_vector_clear on newly allocated vectors.  Get nb_loops from
2274         DDR_SIZE_VECT instead of getting it in parameter.
2275         (subscript_dependence_tester): ... here.  Take as a parameter
2276         loop_nest_depth.  Call build_classic_dist_vector and
2277         build_classic_dir_vector.
2278         (compute_affine_dependence): Update subscript_dependence_tester
2279         parameters.  Update datadep_stats counters.  Call
2280         compute_subscript_distance.
2281         (compute_self_dependence): Save the dist and dir vectors.  Call
2282         compute_subscript_distance.
2283         (ddr_p, DEF_VEC_P(ddr_p), DEF_VEC_ALLOC_P(ddr_p,heap)): Moved...
2284         (compute_all_dependences): Reorder parameters as they were before
2285         conversion to VEC.  Pass nb_loops and loop_nest_depth.  Don't call
2286         compute_subscript_distance.  Update the use of
2287         compute_affine_dependence and initialize_data_dependence_relation.
2288         (find_data_references_in_loop): Handle COMPONENT_REF.
2289         (compute_data_dependences_for_loop): Initialize dependence_stats.
2290         Don't call build_classic_dist_vector and build_classic_dir_vector.
2291         Update the parameters of initialize_data_dependence_relation and
2292         compute_all_dependences.  Print the statistics from datadep_stats.
2293         (analyze_all_data_dependences): Static.  Not used until the pass for
2294         checking the data dependences is contributed.
2295         * tree-data-ref.h (ddr_p, DEF_VEC_P(ddr_p),
2296         DEF_VEC_ALLOC_P(ddr_p,heap)): ... here.
2297         (initialize_data_dependence_relation, compute_affine_dependence,
2298         analyze_all_data_dependences, compute_subscript_distance): Removed.
2299         (print_direction_vector): New.
2300         * lambda.h (gcd): ... here.
2301         (lambda_vector_gcd): Moved here from gcd_vector.
2302         * lambda-code.c (gcd, gcd_vector): Removed.
2303         (lambda_compute_target_space): Use lambda_vector_gcd.  Fix formatting.
2304         * Makefile.in (tree-vect-patterns.o): Depends on TREE_DATA_REF_H.
2305
2306 2006-02-20  Diego Novillo  <dnovillo@redhat.com>
2307
2308         * ipa-type-escape.c: Tidy some comments and white space.
2309         * tree-ssa-operands.c: Likewise.
2310
2311 2006-02-20  Andrew Pinski  <pinskia@physics.uc.edu>
2312
2313         PR tree-opt/25879
2314         * tree-pretty-print.c (debug_tree_chain): Walk the chains.
2315         (dump_decl_name): Do not walk the decl tree chains.
2316         * tree-pass.h (TDF_CHAIN): Remove.
2317
2318 2006-02-20  Rafael Ávila de Espíndola  <rafael.espindola@gmail.com>
2319
2320         * Makefile.in (C): Remove
2321         (PROTO): Remove
2322         (.PHONY): Remove C and PROTO
2323
2324 2006-02-20  Roger Sayle  <roger@eyesopen.com>
2325
2326         PR middle-end/26236
2327         * doc/c-tree.texi (INTEGER_TYPE): Remove reference to the now
2328         deprecated CHAR_TYPE tree code.
2329
2330 2006-02-20  Paolo Bonzini  <bonzini@gnu.org>
2331
2332         * configure.ac (target_list): Add install-info, dvi, html.
2333         * configure: Regenerate.
2334
2335         * ada/Make-lang.in, cp/Make-lang.in, fortran/Make-lang.in,
2336         java/Make-lang.in, objc/Make-lang.in, objcp/Make-lang.in,
2337         treelang/Make-lang.in: Do not use double-colon rules.
2338
2339 2006-02-20  Daniel Berlin  <dberlin@dberlin.org>
2340
2341         * tree.h (struct tree_memory_tag): Add is_used_alone member.
2342         (TMT_USED_ALONE): New macro.
2343         * tree-pass.h (PROP_tmt_usage): New property.
2344         (TODO_update_tmt_usage): New todo.
2345         * tree-ssa-alias.c (updating_used_alone): New variable.
2346         (recalculate_used_alone): New function.
2347         (compute_may_aliases): Set updating_used_alone, call
2348         recalculate_used_alone.
2349         * tree-sra.c (pass_sra): Note that this pass destroys
2350         PROP_tmt_usage, and add TODO_update_tmt_usage.
2351         * tree-ssa-forwprop.c (pass_forwprop): Ditto.
2352         * tree-flow.h (updating_used_alone): Prototype.
2353         (recalculate_used_alone): Ditto.
2354         * passes.c (execute_todo): Add code to set updating_used_alone,
2355         and call recalculate.
2356         * tree-ssa-operands.c (add_virtual_operand): Only append bare def
2357         for clobber if used alone, and add assert to verify used_alone
2358         status.
2359
2360 2006-02-20  Angel Nunez Mencias  <anunez@de.ibm.com>
2361
2362         * config/s390/s390.c (legitimize_pic_address): Assertions checking
2363         for non tls symbols added.
2364         (legitimize_address): Do nothing for PLUS expressions if one of the
2365         addends is a tls symbol reference.
2366
2367 2006-02-20  Paolo Bonzini  <bonzini@gnu.org>
2368
2369         PR bootstrap/25476
2370
2371         * Makefile.in (LDFLAGS): Define from autoconf substitution.
2372
2373         * Makefile.in (BOOTSTRAPPING): New.
2374         (quickstrap): New definition if BOOTSTRAPPING=yes.
2375
2376         * Makefile.in (CONFIG_LANGUAGES): Substitute all_selected_languages.
2377         * configure.ac: Substitute all_selected_languages with the languages
2378         that were configured.  For all the other variables except
2379         lang_specs_files, include all the languages in the tree.
2380         * configure: Regenerate.
2381
2382         * Makefile.in (stmp-fixinc): Copy includes from the prev-gcc directory,
2383         if there is one.  Run the commands to run fixincludes in the same
2384         subshell.
2385
2386         * doc/makefile.texi: Document new makefile targets from toplevel bootstrap.
2387         * doc/install.texi: Document exact conventions for searching target tools.
2388         Document --with-build-time-tools.  Document toplevel bootstrap.  Document
2389         something more about building an Ada cross-compiler.  Don't list GNU Make
2390         requirements which affect all platforms.
2391
2392 2006-02-19  Roger Sayle  <roger@eyesopen.com>
2393
2394         PR middle-end/19543
2395         * varasm.c (compare_constant) <INTEGER_CST>: Integer constants are
2396         only equivalent if the have both the same mode and precision.
2397
2398 2006-02-20  Ben Elliston  <bje@au.ibm.com>
2399
2400         * doc/tree-ssa.texi (Interfaces): Describe low vs. high GIMPLE.
2401
2402 2006-02-19  Roger Sayle  <roger@eyesopen.com>
2403             Steven Bosscher  <stevenb.gcc@gmail.com>
2404
2405         * gcse.c (want_to_gcse_p): On STACK_REGS targets, look through
2406         constant pool references to identify stack mode constants.
2407         * rtlanal.c (constant_pool_constant_p): New predicate to check
2408         whether operand is a floating point constant in the pool.
2409         * rtl.h (constant_pool_constant_p): Prototype here.
2410         * loop.c (scan_loop): Avoid hoisting constants from the constant
2411         pool on STACK_REGS targets.
2412         (load_mems): Likewise.
2413         * loop-invariant.c (get_inv_cost): Make hoisting constant pool
2414         loads into x87 registers expensive in terms of register pressure.
2415
2416 2006-02-19  Roger Sayle  <roger@eyesopen.com>
2417
2418         * gthr-posix.h: On Tru64, map __gthr_foo as a weak reference to
2419         __foo and not foo when _PTHREAD_USE_MANGLED_NAMES_ is defined.
2420
2421 2006-02-19  David Edelsohn  <edelsohn@gnu.org>
2422
2423         * config/rs6000/xcoff.h (TARGET_ASM_OUTPUT_ANCHOR): Define.
2424         * config/rs6000/rs6000.c (rs6000_xcoff_asm_output_anchor): Define.
2425
2426 2006-02-19  Daniel Berlin  <dberlin@dberlin.org>
2427
2428         * doc/invoke.texi: Document -fipa-pta.
2429         * common.opt: Add ipa-pta option.
2430         * tree-ssa-structalias.c (DONT_PROPAGATE_WITH_ANYTHING): Removed.
2431         (do_sd_constraint): Enable DONT_PROPAGATE_WITH_ANYTHING code.
2432         (do_ds_constraint): Ditto.
2433         (get_constraint_for): Only add to referenced_vars if
2434         referenced_vars exists.
2435         (insert_into_field_list): Rewrite to do this unsorted.
2436         (insert_into_field_list_sorted): Rename old insert_into_field_list
2437         to this.
2438         (create_function_info_for): Use insert_into_field_list_sorted.
2439         (create_variable_info_for): Rewrite so it uses unsorted version,
2440         since the field list is sorted.
2441         (intra_create_variable_infos): Only add to referenced_vars if
2442         referenced_vars exists.
2443         (ipa_pta_execute): Init heapvars, and delete when done.
2444         * passes.c (init_optimization_passes): Add call to pass_ipa_pta.
2445
2446 2006-02-19  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
2447
2448         * doc/install.texi: Add missing `@samp'.
2449
2450 2006-02-18  Andrew Pinski <pinskia@physics.uc.edu>
2451
2452         * config/rs6000/darwin.h (ASM_OUTPUT_SPECIAL_POOL_ENTRY_P):
2453         Use the arguments.
2454
2455 2006-02-18  Mark Wielaard  <mark@klomp.org>
2456
2457         * doc/contrib.texi (Contributors): Add classpath/libgcj hackers
2458         who added new 4.1 features, bug fixes and integration support.
2459
2460 2006-02-18  David Edelsohn  <edelsohn@gnu.org>
2461
2462         PR target/26350
2463         * config/rs6000/rs6000.md (extenddftf2): Force 0.0 to validized
2464         MEM for ABI_V4 pic.
2465
2466 2006-02-18  Richard Sandiford  <richard@codesourcery.com>
2467
2468         * cselib.c (cselib_init): Change RTX_SIZE to RTX_CODE_SIZE.
2469         * emit-rtl.c (copy_rtx_if_shared_1): Use shallow_copy_rtx.
2470         (copy_insn_1): Likewise.  Don't copy each field individually.
2471         Reindent.
2472         * read-rtl.c (apply_macro_to_rtx): Use RTX_CODE_SIZE instead
2473         of RTX_SIZE.
2474         * reload1.c (eliminate_regs): Use shallow_copy_rtx.
2475         * rtl.c (rtx_size): Rename variable to...
2476         (rtx_code_size): ...this.
2477         (rtx_size): New function.
2478         (rtx_alloc_stat): Use RTX_CODE_SIZE instead of RTX_SIZE.
2479         (copy_rtx): Use shallow_copy_rtx.  Don't copy each field individually.
2480         Reindent.
2481         (shallow_copy_rtx_stat): Use rtx_size instead of RTX_SIZE.
2482         * rtl.h (rtx_code_size): New variable.
2483         (rtx_size): Change from a variable to a function.
2484         (RTX_SIZE): Rename to...
2485         (RTX_CODE_SIZE): ...this.
2486
2487         PR target/9703
2488         PR tree-optimization/17106
2489         * doc/tm.texi (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Document.
2490         (Anchored Addresses): New section.
2491         * doc/invoke.texi (-fsection-anchors): Document.
2492         * doc/rtl.texi (SYMBOL_REF_IN_BLOCK_P, SYMBOL_FLAG_IN_BLOCK): Likewise.
2493         (SYMBOL_REF_ANCHOR_P, SYMBOL_FLAG_ANCHOR): Likewise.
2494         (SYMBOL_REF_BLOCK, SYMBOL_REF_BLOCK_OFFSET): Likewise.
2495         * hooks.c (hook_bool_mode_rtx_false): New function.
2496         * hooks.h (hook_bool_mode_rtx_false): Declare.
2497         * gengtype.c (create_optional_field): New function.
2498         (adjust_field_rtx_def): Add the "block_sym" field for SYMBOL_REFs when
2499         SYMBOL_REF_IN_BLOCK_P is true.
2500         * target.h (output_anchor, use_blocks_for_constant_p): New hooks.
2501         (min_anchor_offset, max_anchor_offset): Likewise.
2502         (use_anchors_for_symbol_p): New hook.
2503         * toplev.c (compile_file): Call output_object_blocks.
2504         (target_supports_section_anchors_p): New function.
2505         (process_options): Check that -fsection-anchors is only used on
2506         targets that support it and when -funit-at-a-time is in effect.
2507         * tree-ssa-loop-ivopts.c (prepare_decl_rtl): Only create DECL_RTL
2508         if the decl doesn't have one.
2509         * dwarf2out.c: Remove instantiations of VEC(rtx,gc).
2510         * expr.c (emit_move_multi_word, emit_move_insn): Pass the result
2511         of force_const_mem through use_anchored_address.
2512         (expand_expr_constant): New function.
2513         (expand_expr_addr_expr_1): Call it.  Use the same modifier when
2514         calling expand_expr for INDIRECT_REF.
2515         (expand_expr_real_1): Pass DECL_RTL through use_anchored_address
2516         for all modifiers except EXPAND_INITIALIZER.  Use expand_expr_constant.
2517         * expr.h (use_anchored_address): Declare.
2518         * loop-unroll.c: Don't declare rtx vectors here.
2519         * explow.c: Include output.h.
2520         (validize_mem): Call use_anchored_address.
2521         (use_anchored_address): New function.
2522         * common.opt (-fsection-anchors): New switch.
2523         * varasm.c (object_block_htab, anchor_labelno): New variables.
2524         (hash_section, object_block_entry_eq, object_block_entry_hash)
2525         (use_object_blocks_p, get_block_for_section, create_block_symbol)
2526         (use_blocks_for_decl_p, change_symbol_section): New functions.
2527         (get_variable_section): New function, split out from assemble_variable.
2528         (make_decl_rtl): Create a block symbol if use_object_blocks_p and
2529         use_blocks_for_decl_p say so.  Use change_symbol_section if the
2530         symbol has already been created.
2531         (assemble_variable_contents): New function, split out from...
2532         (assemble_variable): ...here.  Don't output any code for
2533         block symbols; just pass them to place_block_symbol.
2534         Use get_variable_section and assemble_variable_contents.
2535         (get_constant_alignment, get_constant_section, get_constant_size): New
2536         functions, split from output_constant_def_contents.
2537         (build_constant_desc): Create a block symbol if use_object_blocks_p
2538         says so.  Or into SYMBOL_REF_FLAGS.
2539         (assemble_constant_contents): New function, split from...
2540         (output_constant_def_contents): ...here.  Don't output any code
2541         for block symbols; just pass them to place_section_symbol.
2542         Use get_constant_section and get_constant_alignment.
2543         (force_const_mem): Create a block symbol if use_object_blocks_p and
2544         use_blocks_for_constant_p say so.  Or into SYMBOL_REF_FLAGS.
2545         (output_constant_pool_1): Add an explicit alignment argument.
2546         Don't switch sections here.
2547         (output_constant_pool): Adjust call to output_constant_pool_1.
2548         Switch sections here instead.  Don't output anything for block symbols;
2549         just pass them to place_block_symbol.
2550         (init_varasm_once): Initialize object_block_htab.
2551         (default_encode_section_info): Keep the old SYMBOL_FLAG_IN_BLOCK.
2552         (default_asm_output_anchor, default_use_aenchors_for_symbol_p)
2553         (place_block_symbol, get_section_anchor, output_object_block)
2554         (output_object_block_htab, output_object_blocks): New functions.
2555         * target-def.h (TARGET_ASM_OUTPUT_ANCHOR): New macro.
2556         (TARGET_ASM_OUT): Include it.
2557         (TARGET_USE_BLOCKS_FOR_CONSTANT_P): New macro.
2558         (TARGET_MIN_ANCHOR_OFFSET, TARGET_MAX_ANCHOR_OFFSET): New macros.
2559         (TARGET_USE_ANCHORS_FOR_SYMBOL_P): New macro.
2560         (TARGET_INITIALIZER): Include them.
2561         * rtl.c (rtl_check_failed_block_symbol): New function.
2562         * rtl.h: Include vec.h.  Declare heap and gc rtx vectors.
2563         (block_symbol, object_block): New structures.
2564         (rtx_def): Add a block_symbol field to the union.
2565         (BLOCK_SYMBOL_CHECK): New macro.
2566         (rtl_check_failed_block_symbol): Declare.
2567         (SYMBOL_FLAG_IN_BLOCK, SYMBOL_FLAG_ANCHOR): New SYMBOL_REF flags.
2568         (SYMBOL_REF_IN_BLOCK_P, SYMBOL_REF_ANCHOR_P): New predicates.
2569         (SYMBOL_FLAG_MACH_DEP_SHIFT): Bump by 2.
2570         (SYMBOL_REF_BLOCK, SYMBOL_REF_BLOCK_OFFSET): New accessors.
2571         * output.h (output_section_symbols): Declare.
2572         (object_block): Name structure.
2573         (place_section_symbol, get_section_anchor, default_asm_output_anchor)
2574         (default_use_anchors_for_symbol_p): Declare.
2575         * Makefile.in (RTL_BASE_H): Add vec.h.
2576         (explow.o): Depend on output.h.
2577         * config/rs6000/rs6000.c (TARGET_MIN_ANCHOR_OFFSET): Override default.
2578         (TARGET_MAX_ANCHOR_OFFSET): Likewise.
2579         (TARGET_USE_BLOCKS_FOR_CONSTANT_P): Likewise.
2580         (rs6000_use_blocks_for_constant_p): New function.
2581
2582 2006-02-18  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
2583
2584         * doc/install.texi (hppa*-hp-hpux*): Update for 4.1.0.
2585
2586 2006-02-18  Andrew Pinski  <pinskia@physics.uc.edu>
2587
2588         PR tree-opt/25680
2589         * tree-ssa-ccp.c (ccp_fold): Handle store CCP of REALPART_EXPR and
2590         IMAGPART_EXPR.
2591
2592 2006-02-18  Diego Novillo  <dnovillo@redhat.com>
2593
2594         * tree-flow.h (struct var_ann_d): Rename field is_alias_tag to
2595         is_aliased.
2596         Update all users.
2597
2598 2006-02-18  Jakub Jelinek  <jakub@redhat.com>
2599
2600         PR middle-end/26334
2601         * stmt.c (decl_overlaps_hard_reg_set_p): Use DECL_HARD_REGISTER
2602         instead of DECL_REGISTER.
2603
2604 2006-02-18  Olivier Hainque  <hainque@adacore.com>
2605
2606         PR ada/13408
2607         * pa.h (WIDEST_HARDWARE_FP_SIZE): Define.
2608
2609 2006-02-18  Joseph S. Myers  <joseph@codesourcery.com>
2610
2611         PR target/24837
2612         * config.gcc: Define UCLIBC_DEFAULT to 0 or 1.
2613         * opth-gen.awk: Handle Var and InverseMask together.
2614         * config/linux.opt (muclibc, mglibc): Use Var(linux_uclibc).
2615         * config/linux.h: Use #if not #ifdef for testing UCLIBC_DEFAULT.
2616         (TARGET_C99_FUNCTIONS): Test OPTION_GLIBC not TARGET_GLIBC.
2617         (CHOOSE_DYNAMIC_LINKER): Give an error for -mglibc and -muclibc
2618         used together.
2619         (UCLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER64,
2620         LINUX_DYNAMIC_LINKER32, LINUX_DYNAMIC_LINKER64): Define.
2621         * config/alpha/linux-elf.h (GLIBC_DYNAMIC_LINKER,
2622         UCLIBC_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2623         LINUX_DYNAMIC_LINKER): Define.
2624         (ELF_DYNAMIC_LINKER): Define to LINUX_DYNAMIC_LINKER.
2625         * config/alpha/linux.h (TARGET_C99_FUNCTIONS): Define to
2626         TARGET_GLIBC.
2627         * config/cris/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2628         (CRIS_LINK_SUBTARGET_SPEC): Pass a -dynamic-linker option.
2629         * config/frv/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2630         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2631         (TARGET_C99_FUNCTIONS): Don't define.
2632         * config/i386/linux.h (DYNAMIC_LINKER): Rename to
2633         GLIBC_DYNAMIC_LINKER.
2634         (SUBTARGET_EXTRA_SPECS): Use LINUX_DYNAMIC_LINKER.
2635         * config/i386/linux64.h (GLIBC_DYNAMIC_LINKER32,
2636         GLIBC_DYNAMIC_LINKER64): Define.
2637         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER32 and
2638         LINUX_DYNAMIC_LINKER64.
2639         * config/ia64/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2640         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2641         * config/m32r/linux.h (GLIBC_DYNAMIC_LINKE): Define.
2642         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2643         * config/m68k/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2644         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2645         * config/mips/linux64.h (GLIBC_DYNAMIC_LINKER32,
2646         GLIBC_DYNAMIC_LINKER64, GLIBC_DYNAMIC_LINKERN32,
2647         UCLIBC_DYNAMIC_LINKERN32, LINUX_DYNAMIC_LINKERN32): Define.
2648         (LINK_SPEC): Use LINUX_DYNAMIC_LINKERN32, LINUX_DYNAMIC_LINKER64
2649         and LINUX_DYNAMIC_LINKER32.
2650         * config/mn10300/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2651         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2652         * config/pa/pa-linux.h (GLIBC_DYNAMIC_LINKER): Define.
2653         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2654         * config/rs6000/linux.h (TARGET_C99_FUNCTIONS): Define to
2655         TARGET_GLIBC.
2656         * config/rs6000/linux64.h (TARGET_C99_FUNCTIONS): Likewise.
2657         (GLIBC_DYNAMIC_LINKER32, GLIBC_DYNAMIC_LINKER64,
2658         UCLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER64,
2659         CHOOSE_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2660         LINUX_DYNAMIC_LINKER32, LINUX_DYNAMIC_LINKER64): Define.
2661         (LINK_OS_LINUX_SPEC32): Use LINUX_DYNAMIC_LINKER32.
2662         (LINK_OS_LINUX_SPEC64): Use LINUX_DYNAMIC_LINKER64.
2663         * config/rs6000/sysv4.h (GLIBC_DYNAMIC_LINKER,
2664         UCLIBC_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2665         LINUX_DYNAMIC_LINKER): Define.
2666         (LINK_OS_LINUX_SPEC): Use LINUX_DYNAMIC_LINKE.
2667         * config/s390/linux.h (GLIBC_DYNAMIC_LINKER32,
2668         GLIBC_DYNAMIC_LINKER64): Define.
2669         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER32 and
2670         LINUX_DYNAMIC_LINKER64.
2671         * config/sh/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2672         (SUBTARGET_LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2673         * config/sparc/linux.h (GLIBC_DYNAMIC_LINKER,
2674         UCLIBC_DYNAMIC_LINKER, CHOOSE_DYNAMIC_LINKER,
2675         LINUX_DYNAMIC_LINKER): Define.
2676         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2677         (TARGET_C99_FUNCTIONS): Define to TARGET_GLIBC.
2678         * config/sparc/linux64.h (GLIBC_DYNAMIC_LINKER32,
2679         GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER32,
2680         UCLIBC_DYNAMIC_LINKER64, CHOOSE_DYNAMIC_LINKER,
2681         LINUX_DYNAMIC_LINKER32, LINUX_DYNAMIC_LINKER64): Define.
2682         (LINK_ARCH32_SPEC): Use LINUX_DYNAMIC_LINKER32.
2683         (LINK_ARCH64_SPEC, LINK_SPEC): Use LINUX_DYNAMIC_LINKER64.
2684         (TARGET_C99_FUNCTIONS): Define to TARGET_GLIBC.
2685         * config/xtensa/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2686         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2687         * doc/invoke.texi (-muclibc): Remove caveat about supported
2688         targets.
2689
2690 2006-02-17  Grigory Zagorodnev <grigory_zagorodnev@linux.intel.com>
2691
2692         * doc/cpp.texi (__TIMESTAMP__): Document.
2693
2694 2006-02-17  Roger Sayle  <roger@eyesopen.com>
2695
2696         PR middle-end/25600
2697         * fold-const.c (fold_binary): Fold (X >> C) != 0 into X < 0 when
2698         C is one less than the width of X (and related transformations).
2699         * simplify-rtx.c (simplify_unary_operation_1): Transform
2700         (neg (lt x 0)) into either (ashiftrt X C) or (lshiftrt X C)
2701         depending on STORE_FLAG_VALUE, were C is one less then the
2702         width of X.
2703
2704 2006-02-17  Daniel Berlin  <dberlin@dberlin.org>
2705
2706         Fix PR tree-optimization/26341
2707         * tree-ssa-operands.c (add_virtual_operand): Remove assert
2708         about NAME_MEMORY_TAG's.
2709
2710 2006-02-17  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
2711
2712         PR target/26255
2713         * pa.md: Create separate HI and QI move patterns for 32-bit and 64-bit
2714         with hardware float support, and software float support.  Add fcpy
2715         alternative to hardware patterns.  Add alternatives to copy between
2716         general and floating-point registers to the 32-bit pattern.
2717         * pa.c (pa_secondary_reload): Don't abort if reload tries to find a
2718         secondary reload to load a QI or HI mode constant into a floating
2719         point register.
2720         * pa32-regs.h (VALID_FP_MODE_P): Allow QImode and HImode.
2721         * pa64-regs.h (VALID_FP_MODE_P): Likewise.
2722
2723 2006-02-17  Andrew Pinski  <pinskia@physics.uc.edu>
2724
2725         PR target/26272
2726         * config/rs6000/darwin.md (load_macho_picbase_si): Add
2727         pc to the pattern.
2728         (load_macho_picbase_di): Likewise.
2729
2730 2006-02-16  Jeff Law  <law@redhat.com>
2731
2732         * tree-vrp.c (set_value_range_to_nonnegative): New function.
2733         (vrp_expr_computes_nonnegative, ssa_name_nonnegative_p): Likewise.
2734         (ssa_name_nonzero_p): Likewise.
2735         (get_value_range): Return NULL if VRP is not running.
2736         (extract_range_from_expr): Fallback to tree_expr_XXX_p if
2737         VRP routines do not discover a range.
2738         (vrp_finalize): Clear VR_VALUE to indicate VRP is not running.
2739         * tree.h (ssa_name_nonzero_p, ssa_name_nonnegative_p): Prototype.
2740         * fold-const.c (tree_expr_nonzero_p): For SSA_NAMEs, query VRP.
2741         (tree_expr_nonnegative_p): Similarly.
2742         * tree-ssa-dom.c (nonzero_vars, nonzero_vars_stack): Remove.
2743         (restore_nonzero_vars_to_original_value): Remove.
2744         (unsafe_associative_fp_binop): Remove.
2745         (tree_ssa_dominator_optimize): Remove initialization and
2746         finalization of nonzero_vars and nonzero_vars_stack.
2747         (dom_opt_initialize_block): No longer push marker on
2748         nonzero_vars_stack.
2749         (dom_opt_finalize_block): No longer call
2750         restore_nonzero_vars_to_original_value.
2751         (record_equivalences_from_phis): No longer look for
2752         nonzero PHI arguments.
2753         (cprop_into_successor_phis): No longer propagate nonzero
2754         property into PHI arguments.  Lose unused argument.  Caller
2755         updated.
2756         (record_equivalences_from_stmt): No longer record nonzero
2757         values for SSA_NAMEs.
2758         (lookup_avail_expr): No longer use nonzero_vars.
2759
2760         * stor-layout.c (set_sizetype): Set TYPE_MAX_VALUE properly
2761         for sizetype when sizetype is unsigned.
2762
2763 2006-02-16  Denis Nagorny <denis_nagorny@linux.intel.com>
2764
2765         PR rtl-optimization/25603
2766         * reload.c (reg_inc_found_and_valid_p): New. Check REG_INC note.
2767         (regno_clobbered_p): Use it. Reusing SETS argument for REG_INC case.
2768         * reload1.c (choose_reload_regs): Added call of regno_clobbered_p
2769         with new meaning of SETS.
2770
2771 2006-02-16  Joseph S. Myers  <joseph@codesourcery.com>
2772
2773         PR target/20353
2774         PR target/24578
2775         PR target/24837
2776         * config/linux.opt: New file.
2777         * config/linux.h (CHOOSE_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,
2778         LINUX_DYNAMIC_LINKER): Define.
2779         (TARGET_C99_FUNCTIONS): Define depending on TARGET_GLIBC.
2780         * config.gcc (*-*-linux*): Define extra_options.
2781         (*-*-*uclibc*): Define UCLIBC_DEFAULT.
2782         (arm*-*-linux-gnueabi): Change to arm*-*-linux-*eabi.
2783         * config/arm/linux-eabi.h (LINUX_TARGET_INTERPRETER): Change to
2784         GLIBC_DYNAMIC_LINKER.
2785         * config/arm/linux-elf.h (LINUX_TARGET_INTERPRETER): Likewise.
2786         (LINUX_TARGET_LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2787         * config/mips/linux.h (GLIBC_DYNAMIC_LINKER): Define.
2788         (LINK_SPEC): Use LINUX_DYNAMIC_LINKER.
2789         * doc/invoke.texi (GNU/Linux Options): New section.
2790
2791 2006-02-16  Eric Botcazou  <ebotcazou@libertysurf.fr>
2792
2793         * config/sparc/sparc.md (setjmp): Rewrite.
2794         (setjmp_32): Delete.
2795         (setjmp_64): Likewise.
2796
2797 2006-02-16  Daniel Berlin <dberlin@dberlin.org>
2798
2799         * tree-ssa-operands.c (access_can_touch_variable): Fix typo in
2800          previous change.
2801
2802 2006-02-16  Zdenek Dvorak <dvorakz@suse.cz>
2803
2804         * loop-invariant.c (invariant_for_use, check_dependencies): Fail for
2805         read-write uses.
2806
2807 2006-02-16  Zdenek Dvorak <dvorakz@suse.cz>
2808
2809         PR rtl-optimization/26296
2810         * Makefile.in (loop-invariant.c): Add except.h dependency.
2811         * loop-invariant.c: Include except.h.
2812         (find_invariant_insn): Ignore insns satisfying can_throw_internal.
2813
2814 2005-02-16  Paul Brook  <paul@codesourcery.com>
2815
2816         * reload1.c (emit_reload_insns): Invalidate dead input registers used
2817         for reloads.
2818
2819 2006-02-16  Bernd Schmidt  <bernd.schmidt@analog.com>
2820
2821         PR rtl-optimization/25636
2822         * local-alloc.c (update_equiv_regs): Lose a bogus rtx_equal_p test
2823         when deciding whether an insn is an initializing insn.
2824
2825 2006-02-15 Daniel Berlin  <dberlin@dberlin.org>
2826
2827         * tree.c (init_ttree): Add STRUCT_FIELD_TAG handling.
2828         (tree_code_size): Ditto.
2829         * tree.h (struct tree_memory_tag): Remove parent_var.
2830         (struct tree_struct_field_tag): New.
2831         (SFT_OFFSET): New.
2832         (SFT_SIZE): New.
2833         (union tree_node): Add sft member.
2834         * tree-ssa-alias.c (get_tmt_for): Don't handle TYPE_READONLY
2835         specially here.
2836         (create_sft): Add size and offset argument, set SFT_OFFSET and
2837         SFT_SIZE.
2838         (create_overlap_variables_for): Update for SFT_OFFSET/SFT_SIZE.
2839         * treestruct.def: Add TS_STRUCT_FIELD_TAG.
2840         * tree-flow-inline.h (get_subvar_at): Update for
2841         SFT_OFFSET/SFT_SIZE.
2842         (var_can_have_subvars): Ditto.
2843         (overlap_subvar): Ditto.
2844         * print-tree.c (print_node): Print out interesting things for
2845         SFT's.
2846         * tree-flow.h (struct subvar): Remove offset and size members.
2847         * tree-ssa-operands.c (get_expr_operands): Update for
2848         get_indirect_ref_operands changes.
2849         (get_indirect_ref_operands): Call add_virtual_operand instead of
2850         add_stmt_operand.  Only recurse on base var if requested.
2851         (access_can_touch_variable): New function.
2852         (add_stmt_operand): Split virtual operand handling into ...
2853         (add_virtual_operand): Here.  Add offset, size, and for_clobber
2854         arguments.  Prune alias sets.
2855         (add_call_clobber_ops): Call add_virtual_operand.
2856
2857 2006-02-15  Jakub Jelinek  <jakub@redhat.com>
2858
2859         PR middle-end/26300
2860         * combine.c (make_extraction): Bail out if ORIG_POS is negative.
2861
2862         * tree.h (struct tree_omp_clause): Use OMP_CLAUSE_CODE rather
2863         than TREE_CODE as index into omp_clause_num_ops array.
2864
2865 2006-02-15  Uttam Pawar  <uttamp@us.ibm.com>
2866
2867         PR rtl-optimization/26184
2868         * modulo-sched.c (generate_reg_moves): Free bitmap vector
2869         uses_of_defs.
2870         * modulo-sched.c (sms_schedule): Free g_arr pointer.
2871         * modulo-sched.c (sms_schedule_by_order): Free bitmap pointers
2872         must_precede, must_follow and tobe_scheduled.
2873
2874         PR other/26147
2875         * opts.c (common_handle_option): Free new_option pointer.
2876         * df-core.c (df_analyze): Free postorder pointer.
2877
2878 2006-02-15  Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
2879
2880         * Makefile.in: Fix the examples about the use of stamps
2881
2882 2006-02-15  Michael Matz  <matz@suse.de>
2883
2884         PR middle-end/22275
2885
2886         * stor-layout.c (layout_decl): Zero-width bitfields aren't
2887         influenced by maximum_field_alignment or DECL_PACKED.
2888         (update_alignment_for_field): Ditto.
2889         (place_field): Ditto.
2890         * doc/extend.texi (<#pragma pack>, <Type Attributes>): Document
2891         this behaviour.
2892
2893 2006-02-15  Paolo Bonzini  <bonzini@gnu.org>
2894
2895         * cfg.c (dump_flow_info): Get dump flags as an additional parameter.
2896         (debug_flow_info): Pass it.
2897         * alias.c (rest_of_handle_cfg): Adjust calls to dump_flow_info.
2898         * bb-reorder.c (reorder_basic_blocks): Likewise.
2899         * cfgcleanup.c (rest_of_handle_jump2): Likewise.
2900         * cse.c (rest_of_handle_cse, rest_of_handle_cse2): Likewise.
2901         * flow.c (life_analysis, recompute_reg_usage): Likewise.
2902         * gcse.c (gcse_main, bypass_jumps): Likewise.
2903         * ifcvt.c (rest_of_handle_if_conversion): Likewise.
2904         * local-alloc.c (rest_of_handle_local_alloc): Likewise.
2905         * loop-init.c (rtl_loop_init, rtl_loop_done): Likewise.
2906         * profile.c (compute_branch_probabilities, branch_prob): Likewise.
2907         * rtl.h (dump_flow_info): Adjust prototype.
2908         * tracer.c (rest_of_handle_tracer, tracer): Likewise.
2909         * var-tracking.c (variable_tracking_main): Likewise.
2910         * passes.c (execute_todo): Obey TDF_BLOCKS for RTL.
2911         * tree-dump.c (enable_rtl_dump_file): Enable the details and blocks
2912         options.
2913
2914 2006-02-15  Marcin Dalecki <martin@dalecki.de>
2915
2916         * tree-ssa-dom.c (dom_thread_across_edge): fix tag expression
2917         construction.
2918
2919 2006-02-14  Zdenek Dvorak <dvorakz@suse.cz>
2920
2921         PR tree-optimization/26209
2922         * tree-ssa-loop.c (pass_scev_cprop): Add TODO_cleanup_cfg.
2923         * tree-cfgcleanup.c (cleanup_control_flow): Remove dead
2924         eh edges.
2925         * tree-cfg.c (replace_uses_by): Do not alter cfg.
2926
2927 2006-02-14  Roger Sayle  <roger@eyesopen.com>
2928
2929         PR middle-end/23670
2930         * fold-const.c (fold_binary) <BIT_IOR_EXPR>: Optimize (X&Y)|Y into
2931         (X,Y) and the corresponding symmetry related transformations.
2932         (fold_binary) <BIT_AND_EXPR>: Likewise, optimize (X|Y)&Y into
2933         (X,Y) and its symmetry related transformations.
2934
2935 2006-02-14  Roger Sayle  <roger@eyesopen.com>
2936
2937         * dojump.c (do_compare_rtx_and_jump): Also handle multi-word GTU
2938         and GEU.
2939
2940 2006-02-14  Adam Nemet  <anemet@caviumnetworks.com>
2941
2942         * simplify-rtx.c (simplify_subreg): Combine SUBREG and TRUNCATE.
2943
2944 2006-02-14  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
2945
2946         PR bootstrap/26053
2947         * configure.ac (HAVE_COMDAT_GROUP): Don't assume non-GNU linkers
2948         support COMDAT group.
2949         * configure: Regenerate.
2950
2951 2006-02-14  Roger Sayle  <roger@eyesopen.com>
2952
2953         PR middle-end/26279
2954         PR middle-end/26280
2955         PR middle-end/26283
2956         * dojump.c (do_compare_rtx_and_jump): Handle multi-word LE.
2957
2958 2006-02-14  Daniel Berlin  <dberlin@dberlin.org>
2959
2960         Fix PR tree-optimization/26260
2961
2962         * doc/invoke.texi (max-fields-for-field-sensitive): Document
2963         param.
2964         * params.h (MAX_FIELDS_FOR_FIELD_SENSITIVE): New.
2965         * params.def (PARAM_MAX_FIELDS_FOR_FIELD_SENSITIVE): Ditto.
2966         * tree-ssa-structalias.c (create_variable_info_for): Use
2967         MAX_FIELDS_FOR_FIELD_SENSITIVE.
2968
2969 2006-02-14  Zdenek Dvorak <dvorakz@suse.cz>
2970
2971         * doc/invoke.texi (-fprefetch-loop-arrays, -fprefetch-loop-arrays-rtl):
2972         Document.
2973         * tree-ssa-loop-niter.c (number_of_iterations_ne,
2974         number_of_iterations_lt, number_of_iterations_cond): Remember the shape
2975         of the ending condition.
2976         * tree-ssa-loop-manip.c: Include params.h.
2977         (build_if_stmt, can_unroll_loop_p, determine_exit_conditions,
2978         tree_unroll_loop): New functions.
2979         * tree-pass.h (pass_loop_prefetch): Declare.
2980         * loop.c (rest_of_handle_loop_optimize): Test for
2981         -fprefetch-loop-arrays-rtl.
2982         * tree-scalar-evolution.h (affine_iv): Moved to tree-flow.h.
2983         * timevar.def (TV_TREE_PREFETCH): New timevar.
2984         * tree-ssa-loop.c (tree_ssa_loop_prefetch, gate_tree_ssa_loop_prefetch,
2985         pass_loop_prefetch): New.
2986         * tree-cfgcleanup.c: Include tree-scalar-evolution.h.
2987         (cleanup_tree_cfg_loop): Call scev_reset.
2988         * common.opt (fprefetch-loop-arrays-rtl): Add.
2989         * tree-ssa-loop-prefetch.c: New file.
2990         * tree-outof-ssa.c (struct value_expr_d): Add expr_vars field.
2991         (new_temp_expr_table): Initialize expr_vars.
2992         (free_temp_expr_table): Cleanup expr_vars.
2993         (check_replaceable, find_replaceable_in_bb): Prevent accumulating
2994         expressions from being merged into one.
2995         * tree-flow.h (affine_iv): Moved from tree-scalar-evolution.h.
2996         (struct tree_niter_desc): Add control, bound and cmp fields.
2997         (tree_ssa_prefetch_arrays, can_unroll_loop_p, tree_unroll_loop):
2998         Declare.
2999         * Makefile.in (tree-ssa-loop-prefetch.o): Add.
3000         (tree-cfgcleanup.o): Add SCEV_H dependency.
3001         (tree-ssa-loop-manip.o): Add PARAMS_H dependency.
3002         * passes.c (init_optimization_passes): Add pass_loop_prefetch.
3003
3004 2006-02-14  Richard Guenther  <rguenther@suse.de>
3005
3006         PR tree-optimization/26258
3007         * tree-ssa-structalias.c (find_func_aliases): Handle aggregates
3008         in PHI argument processing.
3009
3010 2006-02-13  Adam Nemet  <anemet@caviumnetworks.com>
3011
3012         * simplify-rtx.c (simplify_unary_operation_1) <TRUNCATE>: Return
3013         new expression in the requested machine mode.
3014
3015 2006-02-13  Roger Sayle  <roger@eyesopen.com>
3016
3017         * optabs.c (expand_abs): Don't call do_jump_by_parts_greater_rtx
3018         directly, instead let do_compare_rtx_and_jump handle this for us.
3019         * expr.c (expand_expr_real_1): Likewise.
3020         * dojump.c (do_jump_by_parts_greater_rtx): Make static.  Move
3021         before do_jump_by_parts_greater.
3022         (do_jump_by_parts_greater): Move after do_jump_by_parts_greater_rtx.
3023         * expr.h (do_jump_by_parts_greater_rtx): Delete prototype.
3024
3025 2006-02-13  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
3026
3027         * pa/quadlib.c: Use defines instead of enum qfcmp_magic.
3028
3029 2006-02-13  Zdenek Dvorak <dvorakz@suse.cz>
3030
3031         PR rtl-optimization/26235
3032         * loop-invariant.c (hash_invariant_expr_1): Handle 'i' and 'n' formats.
3033         (invariant_expr_equal_p): Handle 'i' and 'n' formats.  Fail on unknown
3034         format.
3035
3036 2006-02-13  Jeff Law  <law@redhat.com>
3037
3038         * tree-vrp.c (extract_range_from_binary_expr): Remove handling of
3039         TRUTH_XOR_EPR.
3040
3041 2006-02-13  Jakub Jelinek  <jakub@redhat.com>
3042
3043         PR middle-end/26092
3044         * gimplify.c (gimplify_call_expr): Don't call get_callee_fndecl
3045         twice if decl is a builtin.  When trying again, call get_callee_fndecl
3046         first to verify it is still a builtin.
3047
3048 2006-02-13  Geoffrey Keating  <geoffk@apple.com>
3049
3050         * dwarf2out.c (base_type_die): Don't add AT_name here.
3051         (subrange_type_die): Don't add AT_name here.
3052         (modified_type_die): Rearrange code flow.  Do add AT_name here.
3053
3054 2006-02-13  Zdenek Dvorak <dvorakz@suse.cz>
3055
3056         PR rtl-optimization/26247
3057         PR rtl-optimization/26248
3058         * loop-invariant.c (may_assign_reg_p): Do not allow VOIDmode.
3059
3060 2006-02-13  Richard Sandiford  <richard@codesourcery.com>
3061
3062         * config/floatunditf.c: Use if __LDBL_MANT_DIG__ == 113.
3063         * config/fixtfdi.c: Likewise.
3064         * config/fixunstfdi.c: Likewise.
3065         * config/floatditf.c: Likewise.
3066
3067 2006-02-13  Roger Sayle  <roger@eyesopen.com>
3068
3069         PR middle-end/24427
3070         * fold-const.c (fold_binary) <BIT_IOR_EXPR>: Transform (X&C1)|C2
3071         into (X,C2) if C1 is a subset of the bits of C2.  Transform
3072         (X&C1)|C2 into X|C2 if C1|C2 == ~0.  Canonicalize (X&C1)|C2 as
3073         (X&(C1&~C2))|C2.
3074         <BIT_AND_EXPR>: Canonicalize (X|C1)&C2 as (X&C2)|(C1&C2).
3075
3076 2006-02-13  Josh Conner  <jconner@apple.com>
3077
3078         PR target/25376
3079         * varasm.c (function_section): Check for section name before
3080         calling select_section on targets that define
3081         USE_SELECT_SECTION_FOR_FUNCTIONS.  On other targets, use
3082         unlikely_text_section instead of hot_function_section if
3083         first_function_block_is_cold.
3084
3085 2006-02-13  J"orn Rennecke <joern.rennecke@st.com>
3086
3087         PR middle-end/25335
3088         * reload1.c (gen_reload): Also use find_replacement in UNARY_P case.
3089
3090 2006-02-12  Zdenek Dvorak <dvorakz@suse.cz>
3091
3092         PR rtl-optimization/26222
3093         * function.c (assign_stack_temp_for_type): Do not reuse stack slots
3094         after tree->rtl expansion.
3095         * loop-invariant.c (move_invariant_reg): Use force_operand on rhs
3096         before passing it to emit_move_insn.
3097
3098 2006-02-12  Gabriel Dos Reis  <gdr@integrable-solutions.net>
3099
3100         * doc/invoke.texi (-Write-strings): Document that it is enabled by
3101         default.
3102         * c.opt (-Wwrite-strings): Declare variable warn_write_strings.
3103         Clarify documentation.
3104         * c-common.h (warn_write_strings): Remove.
3105         * c-common.c (warn_write_strings): Likewise.
3106         * c-opts.c (c_common_init_options): Enable -Wwrite-strings by
3107         default for C++.
3108
3109 2006-02-12  Roger Sayle  <roger@eyesopen.com>
3110
3111         PR middle-end/25724
3112         * dojump.c (do_jump): Call do_compare_rtx_and_jump.
3113         (do_jump_parts_zero_rtx): New function renamed from
3114         do_jump_parts_equality_rtx.  Made static.  Add a mode argument.
3115         (do_jump_parts_equality_rtx): New function split out from
3116         do_jump_parts_equality.  Old implementation renamed as above.
3117         Call do_jump_parts_zero_rtx if either operand is zero.
3118         (do_jump_parts_equality): Call do_jump_parts_equality_rtx to
3119         do all of the heavy lifting.
3120         (do_compare_rtx_and_jump): Handle multi-word comparisons by
3121         calling either do_jump_by_parts_greater_rtx or
3122         do_jump_by_parts_equality_rtx.
3123         * expr.h (do_jump_by_parts_equality_rtx): Remove prototype.
3124         * expmed.c (do_cmp_and_jump): Now multi-word optimization has
3125         moved to do_compare_rtx_and_jump, call it directly.
3126         * stmt.c (do_jump_if_equal): Remove static prototype.  Add a
3127         mode argument.  Call do_compare_rtx_and_jump.
3128         (emit_case_nodes): Update calls to do_jump_if_equal.
3129
3130 2006-02-12  Zdenek Dvorak <dvorakz@suse.cz>
3131
3132         PR rtl-optimization/26225
3133         * loop-invariant.c (may_assign_reg_p): Do not allow BLKmode operands.
3134
3135 2006-02-12  Zdenek Dvorak <dvorakz@suse.cz>
3136
3137         PR rtl-optimization/26232
3138         * loop-invariant.c (find_invariant_insn): Ignore insns that set CC0.
3139
3140 2006-02-11  Jason Merrill  <jason@redhat.com>
3141
3142         PR tree-opt/24365
3143         * tree-inline.c (declare_return_variable): Just don't use the
3144         modify target if it's a gimple complex reg and the return slot
3145         isn't.
3146
3147 2006-02-11  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
3148
3149         * doc/contrib.texi: Update my entry.
3150
3151 2006-02-10  Geoffrey Keating  <geoffk@apple.com>
3152
3153         * config/i386/darwin.h (DBX_REGISTER_NUMBER): Define.
3154
3155 2006-02-10  Diego Novillo  <dnovillo@redhat.com>
3156
3157         * tree-inline.c (estimate_num_insns_1): Make OpenMP directives
3158         expensive.
3159
3160 2006-02-10  Zdenek Dvorak <dvorakz@suse.cz>
3161
3162         * doc/invoke.texi (-floop-optimize2): Removed.
3163         * toplev.c (process_options): Remove handling of flag_loop_optimize2.
3164         * loop-init.c (gate_handle_loop2): Do not test flag_loop_optimize2.
3165         Test flag_branch_on_count_reg only if HAVE_doloop_end.
3166         * common.opt (floop-optimize2): Removed.
3167         (fmove-loop-invariants): Enabled by default.
3168
3169 2006-02-10  Sebastian Pop  <pop@cri.ensmp.fr>
3170
3171         * tree-if-conv.c (combine_blocks): Free the result of
3172         get_loop_exit_edges.
3173
3174 2006-02-10  Jeff Law  <law@redhat.com>
3175
3176         * fold-const.c (tree_expr_nonzero_p): Fix thinko.
3177
3178         PR tree-optimization/26213
3179         * tree-ssa-threadedge.c (simplify_control_stmt_condition): Do not
3180         loop trying to follow SSA_NAME_VALUE chains.
3181
3182 2006-02-10  Richard Guenther  <rguenther@suse.de>
3183
3184         * tree-dfa.c (get_ref_base_and_extent): When computing maxsize
3185         deal with structures that end in implicitly variable sized arrays.
3186
3187 2006-02-09  Zdenek Dvorak <dvorakz@suse.cz>
3188
3189         PR rtl-optimization/24762
3190         * df-scan.c (df_bb_refs_record): Record correct registers defined on
3191         eh edges.
3192
3193 2006-02-09  Zdenek Dvorak <dvorakz@suse.cz>
3194
3195         * tree-ssa-loop-ivopts.c (struct loop_data, loop_data): Removed.
3196         (struct ivopts_data): Add regs_used field.
3197         (tree_ssa_iv_optimize_init): Do not allocate aux fields for loops.
3198         (ivopts_global_cost_for_size, determine_set_costs): Use data->regs_used
3199         instead of loop_data->regs_used;
3200         (free_loop_data): Do not free aux fields for loops.
3201         (tree_ssa_iv_optimize): Do not pass loops to tree_ssa_iv_optimize_init
3202         and tree_ssa_iv_optimize_finalize.
3203
3204 2006-02-09  Kaz Kojima  <kkojima@gcc.gnu.org>
3205
3206         * config/sh/sh.h (FUNCTION_VALUE): Don't handle CHAR_TYPE.
3207
3208 2006-02-09  J"orn Rennecke <joern.rennecke@st.com>
3209
3210         PR target/26141
3211         * sh.c (sh_gimplify_va_arg_expr): Don't change the result type when
3212         computing the effective result type.
3213
3214 2006-02-09  J"orn Rennecke <joern.rennecke@st.com>
3215
3216         PR inline-asm/16194
3217         * tree.h (decl_overlaps_hard_reg_set_p) Don't declare.
3218         (tree_overlaps_hard_reg_set): Declare.
3219         * stmt.c (decl_overlaps_hard_reg_set_p): Now static.  Change return
3220         type and signature to match function type expected by walk_tree.
3221         (tree_overlaps_hard_reg_set): New function.
3222         (decl_conflicts_with_clobbers_p): Rename to:
3223         (tree_conflicts_with_clobbers_p).  Take HARD_REG_SET * argument.
3224         Use tree_overlaps_hard_reg_set.  Changed caller.
3225         * doc/tm.texi (TARGET_MD_ASM_CLOBBERS): Replace
3226         decl_overlaps_hard_reg_set_p with tree_overlaps_hard_reg_set.
3227         * cris.c (cris_md_asm_clobbers): Likewise.
3228
3229 2006-02-09  Bernd Schmidt  <bernd.schmidt@analog.com>
3230
3231         * reload1.c (emit_input_reload_insns): Delete code that tries to
3232         inherit using find_equiv_reg.
3233
3234 2006-02-09  Gabriel Dos Reis  <gdr@integrable-solutions.net>
3235
3236         * c-common.h (flag_const_strings): Don't declare.
3237         * c-common.c (flag_const_strings): Remove.
3238         * c.opt (fconst_strings): Remove.
3239         * c-opts.c (c_common_handle_option): Remove <OPT_fconst_strings>.
3240         <OPT_Wwrite_strings>: Don't set flag_const_strings.
3241         (c_common_init_options): Don't set flag_const_strings.
3242         * doc/invoke.texi (-fno-const-strings): Remove documentation.
3243
3244 2006-02-09  Richard Earnshaw  <richard.earnshaw@arm.com>
3245
3246         * arm.md (tlobits_cbranch): New pattern.
3247         * arm.h (arm_select_cc_mode): For thumb, only return CC_Nmode if
3248         testing a single bit.
3249
3250 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
3251
3252         PR tree-opt/26179
3253         * tree-ssa-pre.c (create_component_ref_by_pieces):
3254         Handle RETURN_DECL like VAR_DECL.
3255
3256 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
3257
3258         PR middle-end/26134
3259         * fold-const.c (fold_indirect_ref_1): Fold
3260         "*(foo *)&complexfoo" to "__real__ complexfoo"
3261         and "((foo*)&complexfoo)[1]" to "__imag__ complexfoo".
3262
3263 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
3264
3265         * tree-flow-inline.h (var_can_have_subvars):
3266         Volatile variables should not have subvariables.
3267
3268 2006-02-09  Diego Novillo  <dnovillo@redhat.com>
3269
3270         PR 26180
3271         * tree-vrp.c (vrp_int_const_binop): Detect overflow when
3272         multiplying unsigned values.
3273         Tidy comments.
3274
3275 2006-02-09  Eric Botcazou  <ebotcazou@libertysurf.fr>
3276
3277         * config/sparc/sparc.c (tls_call_delay): Fix oversight.
3278
3279 2006-02-08  Jason Merrill  <jason@redhat.com>
3280
3281         PR c++/25979
3282         * tree.def: Elaborate on difference from MODIFY_EXPR.
3283         * doc/c-tree.texi (INIT_EXPR): Likewise.
3284         * gimplify.c (internal_get_tmp_var): Use INIT_EXPR.
3285         (gimplify_decl_expr, gimplify_init_ctor_eval): Likewise.
3286         (gimplify_target_expr): Likewise.
3287         (gimplify_cond_expr): Remove target handling.
3288         (gimplify_modify_expr): Don't clobber INIT_EXPR code here.
3289         (gimplify_expr): Clobber it here.
3290         (gimplify_modify_expr_rhs): Push assignment into COND_EXPR here.
3291         Do return slot optimization if we have an INIT_EXPR.
3292
3293         PR tree-opt/24365
3294         * tree-inline.c (declare_return_variable): Also clear
3295         DECL_COMPLEX_GIMPLE_REG_P as needed in the modify_dest case.
3296
3297         PR c++/16405
3298         * gimplify.c (gimplify_modify_expr_rhs): Re-enable *& handling.
3299
3300         PR middle-end/22439
3301         * gimplify.c (gimplify_one_sizepos): Fix typo.
3302
3303 2006-02-08  Jeff Law  <law@redhat.com>
3304
3305         PR tree-optimization/21417
3306         * tree-ssa-threadedge.c (thread_across_edge): Reject threading
3307         across a backedge if the control statement at the end of the
3308         block is data dependent on other statements in the same block.
3309         (record_temporary_equivalences_from_stmts): Remove over-conservative
3310         test for threading across backedges.
3311
3312         * tree-ssa-dce.c (remove_dead_statement): When removing a dead
3313         control statement, handle all three special cases in the same
3314         manner as they all have the same desired solution.  No longer
3315         special case edge flag updating when the post dominator is
3316         the exit block.
3317
3318 2006-02-08  Roger Sayle  <roger@eyesopen.com>
3319
3320         * tree.def (CHAR_TYPE): Remove.
3321         * dbxout.c (dbxout_type): Delete dead handling of CHAR_TYPE.
3322         * dwarf2out.c (base_type_die, is_base_type): Likewise.
3323         (gen_type_die) <ARRAY_TYPE>: Remove handling of CHAR_TYPE arrays.
3324         (gen_string_type_die): Delete unreachable function.
3325
3326         * tree-pretty-print.c (dump_generic_node): Don't handle CHAR_TYPE.
3327         * tree.c (build_int_cst_wide, type_contains_placeholder_1,
3328         type_hash_eq, variably_modified_type_p, walk_type_fields): Likewise.
3329         * tree.h (NUMERICAL_TYPE_CHECK, INTEGRAL_TYPE_P): Likewise.
3330         * builtins.c (type_to_class): Likewise.
3331         * fold-const.c (fold_convert, build_range_check,
3332         merge_ranges): Likewise.
3333         * expr.c (count_type_elements): Likewise.
3334         * c-pretty-print.c (pp_c_type_specifier): Likewise.
3335         * stor-layout.c (layout_type): Likewise.
3336         * ipa-type-escape.c (type_to_consider): Likewise.
3337         * gimplify.c (omp_firstprivatize_type_sizes,
3338         gimplify_type_sizes): Likewise.
3339         * explow.c (promote_mode): Likewise.
3340         * tree-sra.c (is_sra_scalar_type): Likewise.
3341         * varasm.c (output_constant): Likewise.
3342         * tree-inline.c (remap_type_1): Likewise.
3343         * convert.c (convert_to_pointer, convert_to_real,
3344         convert_to_integer, convert_to_complex): Likewise.
3345
3346 2006-02-08  Daniel Berlin  <dberlin@dberlin.org>
3347
3348         * df-scan.c (df_def_record_1): A set destination may
3349         be a parallel regardless of mode.
3350
3351 2006-02-08  Roger Sayle  <roger@eyesopen.com>
3352
3353         PR target/22209
3354         * config/mips/mips.h (MIN_UNITS_PER_WORD): Don't define for libgcc.
3355         * config/mips/_tilib.c: Remove.
3356         * config/fixtfdi.c: New libgcc source file.
3357         * config/fixunstfdi.c: New source file.
3358         * config/floatditf.c: New source file.
3359         * config/floatunditf.c: New souce file.
3360         * config/mips/t-iris6 (LIB2FUNCS_EXTRA): Include the new source
3361         files above instead of config/mips/_tilib.c.
3362         * config/mips/t-linux64 (LIB2FUNCS_EXTRA): Likewise.
3363
3364 2006-02-08  Jeff Law  <law@redhat.com>
3365
3366         PR tree-optimization/26169
3367         * tree-vrp.c (execute_vrp): Perform any queued SSA updates before
3368         threading jumps.
3369
3370 2006-02-08  Zdenek Dvorak <dvorakz@suse.cz>
3371
3372         * df.h (DF_REG_SIZE): Return the length of the initialized
3373         part of the array.
3374
3375 2006-02-08  Nathan Sidwell  <nathan@codesourcery.com>
3376
3377         * gcc/config/m68k/lb1sf68.asm (__divsf3, __divdf3, __mulsf3,
3378         __muldf3): Return a correctly signed zero.
3379
3380 2006-02-08  Paolo Bonzini  <bonzini@gnu.org>
3381
3382         * passes.c (register_one_dump_file): Accept the current properties
3383         instead of pass number.  Adjust call to dump_register.  Remove
3384         duplicated code.
3385         (register_dump_files): Now a wrapper around...
3386         (register_dump_files_1): ... this one.  Do not modify the pass
3387         structure.
3388         (next_pass_1): Cosmetic fix.
3389         (execute_todo): Keep second parameter only.  Use curr_properties
3390         instead of fetching it from the pass structure.  Check and set
3391         last_verified.
3392         (execute_one_pass): Handle TODO_set_props.  Use curr_properties
3393         instead of fetching it from the pass structure.  Fix calls to
3394         execute_todo.  Update curr_properties and initialize .vcg RTL dump
3395         after running the pass.  Reset last_verified.
3396         * tree-dump.c (dump_files): Renumber consecutively.  Put .cgraph dump