OSDN Git Service

2005-01-16 Paolo Bonzini <bonzini@gnu.org>
[pf3gnuchains/gcc-fork.git] / gcc / ChangeLog
1 2005-01-16  Paolo Bonzini  <bonzini@gnu.org>
2
3         * combine.c (record_value_for_reg): Invalidate registers
4         if INSN is null.
5         (record_dead_and_set_regs_1): Likewise, by passing them to
6         record_value_for_reg.
7         (record_dead_and_set_regs): Invalidate stores made by a
8         call.  We do not combine across a call, but we still
9         relied on equivalences.
10
11 2006-01-16  Eric Botcazou  <ebotcazou@adacore.com>
12
13         * tree-vrp.c (extract_range_from_binary_expr): Cope with
14         vrp_int_const_binop returning non-constant nodes.
15
16 2006-01-16  Paul Brook  <paul@codesourcery.com>
17
18         * config/m68k/m68k.c (output_move_const_into_data_reg):
19         Output correct mnemonic for mvz and mvs.
20
21 2006-01-16  Gabor Loki <loki@gcc.gnu.org>
22
23         * rtl-factoring.c : Add sequence abstraction algorithm.
24         * cfgcleanup.c (outgoing_edges_match): Extra checks.
25         (try_crossjump_to_edge): Avoid deleting preserve label when redirecting
26         ABNORMAL edges.
27         (block_has_preserve_label): New function.
28         * common.opt: Register new pass.
29         * Makefile.in: Ditto.
30         * passes.c: Ditto.
31         * timevar.def: Ditto.
32         * tree-pass.h: Ditto.
33         * emit-rtl.c (make_jump_insn_raw): Remove forward decl.
34         * rtl.h (make_jump_insn_raw): Add forward decl.
35         * doc/invoke.texi: Add documentation for -frtl-abstract-sequences.
36
37 2006-01-16  Eric Botcazou  <ebotcazou@adacore.com>
38             Roger Sayle  <roger@eyesopen.com> 
39
40         * fold-const.c (fold_minmax): New static function.
41         (fold_binary) <MIN_EXPR>: Call it.
42         <MAX_EXPR>: Likewise.
43         * stor-layout.c (place_field): Use DECL_SIZE consistently
44         in the computation of the new record size.
45
46 2006-01-16  Kazu Hirata  <kazu@codesourcery.com>
47
48         * cse.c (cse_condition_code_reg): Make it static.
49         * rtl.h: Remove the prototype for cse_condition_code_reg.
50
51         * combine.c (combine_instructions): Make it static.
52         * rtl.h: Remove the prototype for combine_instructions.
53
54 2006-01-15  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
55
56         PR target/25168
57         * tree.c (get_file_function_name_long): Concatenate the first global
58         object name with a string derived from the input filename of the object
59         for type "F".
60
61 2006-01-16  Ben Elliston  <bje@au.ibm.com>
62
63         * config/i386/winnt-stubs.c: Update FSF address.
64         * config/xtensa/ieee754-df.S: Ditto.
65         * config/xtensa/ieee754-sf.S: Ditto.
66
67 2006-01-14  Ian Lance Taylor  <ian@airs.com>
68
69         * ifcvt.c (noce_init_if_info): New static function, broken out of
70         noce_process_if_block.
71         (noce_process_if_block): Call noce_init_if_info.
72         (check_cond_move_block): New static function.
73         (cond_move_process_if_block): New static function.
74         (process_if_block): Call cond_move_process_if_block.
75
76 2006-01-15  Kazu Hirata  <kazu@codesourcery.com>
77
78         * cselib.c (hash_table): Rename to cselib_hash_table.
79         (cselib_clear_table, discard_useless_values,
80         remove_useless_values, cselib_lookup_mem, cselib_lookup,
81         cselib_init, cselib_finish): Adjust uses of hash_table.
82
83 2006-01-14  Kazu Hirata  <kazu@codesourcery.com>
84
85         PR tree-optimization/25485
86         * tree-vrp.c (extract_range_from_binary_expr): Handle cases
87         where one of the operands of TRUTH_AND_EXPR and TRUTH_OR_EXPR
88         is known to be false and true, respectively.
89
90 2006-01-14  Richard Guenther  <rguenther@suse.de>
91
92         PR tree-optimization/22548
93         PR tree-optimization/22555
94         PR tree-optimization/22501
95         * Makefile.in (tree-ssa-structalias.o): Depend on $(PARAMS_H).
96         * params.def (salias-max-array-elements): New parameter.
97         * params.h (SALIAS_MAX_ARRAY_ELEMENTS): Define.
98         * doc/invoke.texi (salias-max-array-elements): Document.
99         * tree-flow-inline.h (var_can_have_subvars): We also handle
100         arrays now.
101         * tree-ssa-alias.c (find_used_portions): Handle ARRAY_REF like
102         COMPONENT_REF.
103         * tree-ssa-structalias.c (params.h): Include.
104         (push_fields_onto_fieldstack): Handle ARRAY_TYPE.
105         (find_func_aliases): Handle multiple constraints from ARRAY_REF.
106         (get_constraint_for): For ADDR_EXPR operating on something
107         containing an ARRAY_REF, add all subvars to the solution.
108         (handle_ptr_arith): Handle ARRAY_TYPE like RECORD_TYPE types.
109         * tree-ssa-operands.c (parse_ssa_operands): Handle ARRAY_REF
110         for creating MUST_DEFs.
111         (get_expr_operands): Treat ARRAY_REF like COMPONENT_REF wrt subvars.
112
113 2006-01-14  Zdenek Dvorak <dvorakz@suse.cz>
114
115         * tree-ssa-loop-niter.c (number_of_iterations_cond): Split into several
116         functions.
117         (number_of_iterations_ne, number_of_iterations_lt_to_ne,
118         assert_no_overflow_lt, assert_loop_rolls_lt, number_of_iterations_lt,
119         number_of_iterations_le): New functions.
120         (number_of_iterations_special): Removed.
121         (number_of_iterations_exit): Do not use number_of_iterations_special.
122         * tree.c (unsigned_type_for): Always return integer type.
123
124 2006-01-14  Steven Bosscher  <stevenb.gcc@gmail.com>
125         Richard Guenther  <rguenther@suse.de>
126
127         PR rtl-optimization/24257
128         * gcse.c (find_moveable_store): Only consider a store movable
129         when the SET_SRC of the insn can be assigned to a register.
130
131 2006-01-14  Ian Lance Taylor  <ian@airs.com>
132
133         * tree.c (tree_not_class_check_failed): New function.
134         * tree.h (NON_TYPE_CHECK): Call tree_not_class_check_failed.
135         (tree_not_class_check_failed): Declare.
136
137 2006-01-13  Ian Lance Taylor  <ian@airs.com>
138
139         * reload1.c (do_output_reload): Add assertion rejecting a
140         CALL_INSN.
141
142 2006-01-13  Adam Nemet  <anemet@caviumnetworks.com>
143
144         * combine.c (struct reg_stat): Add new fields truncation_label and
145         truncated_to_mode.
146         (record_value_for_reg): Reset truncated_to_mode.
147         (record_truncated_value): New function.
148         (check_promoted_subreg): Call it.  Rename to check_conversions.
149         (combine_instructions): Rename check_promoted_subreg to
150         check_conversions.
151         (reg_truncated_to_mode): New function.
152         (make_extraction): Use it.  Check TRULY_NOOP_TRUNCATION.
153         (gen_lowpart_or_truncate): New function.
154         (force_to_mode): Use it instead of gen_lowpart.
155
156 2006-01-13  Diego Novillo  <dnovillo@redhat.com>
157
158         * tree-ssa-alias.c (add_type_alias): Fix typo.  Test whether
159         VAR is a tag, not its type tag.
160
161 2006-01-13  Alexandre Oliva  <aoliva@redhat.com>
162
163         * config/i386/sse.md (*vec_extractv2di_1_sse2): Reorder
164         alternatives to match style of other entries.
165         (*vec_extractv2di_1_sse): Likewise.  Fix mode attr.
166
167 2006-01-13  Daniel Berlin  <dberlin@dberlin.org>
168
169         PR tree-optimization/25771
170         * tree-ssa-pre.c (insert_extra_phis): Don't insert merges of abnormal
171         SSA_NAMES.
172
173 2006-01-13  Andrew Pinski  <pinskia@physics.uc.edu>
174
175         PR tree-opt/24365
176         * tree-inline.c (declare_return_variable): If the return variable
177         was marked as a non gimple complex, set the return slot variable
178         to be a non gimple comple variable.
179
180 2006-01-13  Richard Guenther  <rguenther@suse.de>
181
182         * builtins.c (expand_builtin_sincos): New function.
183         (expand_builtin_mathfn_3): Remove dead code, sin and cos
184         do not set errno.
185         (expand_builtin): Expand sincos using expand_builtin_sincos.
186
187 2006-01-12  DJ Delorie  <dj@redhat.com>
188
189         * config/m32c/shift.md: Rewrite: Allow arbitrary operands for
190         shift counts, separate SI shifts for m32c vs m16c, pass shift type
191         so that constant shifts can be split.
192         * config/m32c/m32c.c (m32c_const_ok_for_constraint_p): Add In6.
193         (m32c_valid_pointer_mode): Make static.
194         (shift_gen_func_for): New.
195         (m32c_prepare_shift): Use it.  Split large const shifts into
196         multiple shifts.
197         * config/m32c/predicates.md (shiftcount_operand): Allow more
198         general operands.
199         (longshiftcount_operand): New.
200         * doc/md.texi (Machine Constraints): Document In6.
201
202 2006-01-13  Ben Elliston  <bje@au.ibm.com>
203
204         * doc/tm.texi (Data Output): Add REAL_VALUE_TO_TARGET_DECIMAL32,
205         REAL_VALUE_TO_TARGET_DECIMAL64 and REAL_VALUE_TO_TARGET_DECIMAL128
206         documentation.
207
208 2006-01-12  Daniel Berlin  <dberlin@dberlin.org>
209
210         * tree-ssa-operands.c (add_call_clobber_ops): Use SFT_PARENT_VAR
211         to try to avoid clobbering pieces of structures when we know
212         something about the whole structure.
213         * tree-ssa-alias.c (create_sft): Set SFT_PARENT_VAR
214
215 2006-01-13  Ben Elliston  <bje@au.ibm.com>
216
217         * doc/rtl.texi (Insns): Remove statement that libcalls cannot
218         return in memory, as this is no limitation is no longer present.
219
220 2006-01-12  DJ Delorie  <dj@redhat.com>
221
222         * config/m32c/addsub.md (addhi3): Add two more alternatives, for
223         mova with fb, and for fb+0 -> An.
224
225         * config/m32c/mov.md (peephole2): Fix enabling logic.
226
227         * config/m32c/m32c.h (CTOR_LIST_BEGIN, CTOR_LIST_END,
228         DTOR_LIST_BEGIN, DTOR_LIST_END, CTORS_SECTION_ASM_OP,
229         DTORS_SECTION_ASM_OP, INIT_ARRAY_SECTION_ASM_OP,
230         FINI_ARRAY_SECTION_ASM_OP): Define.
231
232         * config/m32c/m32c.c (m32c_legitimize_address): Remove temporary
233         variable.
234         (m32c_legitimize_reload_address): New logic to reload FB to An.
235         (m32c_output_reg_push): Add newline.
236         (m32c_output_reg_pop): Likewise.
237
238 2006-01-12  Ulrich Weigand  <uweigand@de.ibm.com>
239
240         * struct-equiv.c (find_dying_inputs): Fix off-by-one bug.
241
242 2006-01-11  Andrew Pinski  <pinskia@physics.uc.edu>
243
244         * config/i386/darwin.h (SUBTARGET_ENCODE_SECTION_INFO): Define.
245
246 2006-01-11  Kazu Hirata  <kazu@codesourcery.com>
247
248         * config/sh/predicates.md (sh_rep_vec): Add parallel to
249         match_code.
250
251 2006-01-11  Ben Elliston  <bje@au.ibm.com>
252
253         * rtlanal.c (find_reg_note): Assert insn is not null.
254
255 2005-01-11  Kenneth Zadeck <zadeck@naturalbridge.com>
256
257         * df-scan.c (df_hard_reg_init): Move declaration of i outside
258         ifdef.
259
260 2006-01-11  Jeff Law  <law@redhat.com>
261
262         * tree-ssa-threadupdate.c (threaded_edges): New VEC to
263         hold edge pairs.
264         (mark_threaded_blocks, register_jump_thread): New functions.
265         (thread_through_all_blocks): Remove unwanted argument.  No
266         longer rely on e->aux to communicate thread target info.
267         Call mark_threaded_blocks.  Release the threaded_blocks
268         bitmap and threaded_edges vector when complete.
269         * tree-ssa-dom.c (struct edge_info): Remove redirection_target field.
270         (threaded_blocks): Remove.
271         (tree_ssa_dominator_optimize): Remove initialization and
272         finalization of threaded_blocks.  Simplify call to
273         thread_through_all_blocks.
274         (thread_across_edge): Call register_jump_thread rather than
275         storing thread information into e->aux.
276         (free_all_edge_infos): Simplify now that e->aux is no longer
277         used to communicate with thread_through_all_blocks.
278         * tree-flow.h (thread_through_all_blocks): Update prototype.
279         (register_jump_thread): Prototype.
280         
281 2006-01-11  Kazu Hirata  <kazu@codesourcery.com>
282
283         * df-core.c (df_compact_blocks, df_bb_replace): Use
284         SET_BASIC_BLOCK instead of BASIC_BLOCK.
285
286 2006-01-11  Richard Guenther  <rguenther@suse.de>
287
288         PR tree-optimization/25734
289         * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Do not
290         stop propagation after successful propagation to the LHS.
291
292 2006-01-11  Kazu Hirata  <kazu@codesourcery.com>
293
294         * basic-block.h (control_flow_graph): Change the type of
295         x_basic_block_info to VEC(basic_block,gc) *.
296         (BASIC_BLOCK_FOR_FUNCTION, BASIC_BLOCK): Adjust the uses of
297         basic_block_info.
298         (SET_BASIC_BLOCK): New.
299         * cfg.c (compact_blocks, expunge_block): Use SET_BASIC_BLOCK
300         instead of BASIC_BLOCK when assigning to BASIC_BLOCK.
301         * cfgbuild.c (find_basic_blocks): Likewise.
302         * cfglayout.c (fixup_reorder_chain): Likewise.
303         * cfgrtl.c (create_basic_block_structure,
304         rtl_create_basic_block): Likewise.
305         * ifcvt.c (find_if_case_1): Likewise.
306         * tree-cfg.c (init_empty_tree_cfg, build_tree_cfg, create_bb):
307         Likewise.
308
309 2005-01-11  Kenneth Zadeck <zadeck@naturalbridge.com>
310
311         * Makefile.in: Removed rotted odf.c entry.
312         
313 2006-01-11  Hans-Peter Nilsson  <hp@axis.com>
314
315         PR target/25706
316         * config/cris/cris.md ("*extopqihi_side", "*extop<mode>si_side")
317         ("*extop<mode>si_swap_side_biap", "*extop<mode>si_swap_side",
318         ("*extopqihi", "*extop<mode>si", "*extop<mode>si_swap"): Use %E
319         output pattern modifier, not %e.
320         * config/cris/cris.c (cris_op_str): Update comment about pattern
321         modifier.
322         (cris_print_operand) <case 'e'>: Clear cris_output_insn_is_bound
323         before falling through into...
324         <case 'E'>: Redefined from old 'e' case.
325
326 2006-01-11  Jan Hubicka  <jh@suse.cz>
327
328         PR target/25042
329         * i386.c (ix86_init_mmx_sse_builtins): Do not delcare float128
330
331 2006-01-11  Jan Hubicka  <jh@suse.cz>
332
333         * i386.h (TARGET_DECOMPOSE_LEA): Kill.
334         * i386.c (x86_decompose_lea): Kill.
335         (ix86_rtx_costs): Kill.
336
337 2006-01-11  Jan Hubicka  <jh@suse.cz>
338
339         * cgraph.c (cgraph_insert_node_to_hashtable): New function.
340         * cgraph.h (cgraph_node): Add inline_decl.
341         (cgraph_insert_node_to_hashtable): Declare.
342         (save_inline_function_body): Declare.
343         * cgraphunit.c (verify_cgraph_node): Inline edges might point to inline
344         clones.
345         (cgraph_preserve_function_body_p): Do not presrve when dump is enabled.
346         (cgraph_function_versioning): Update call of tree_function_versioning.
347         (save_inline_function_body): New function.
348         * function.h (struct function): Kill saved_eh, saved_cfg, saved_args,
349         saved_static_chain_decl, saved_blocks and saved-unexpanded_var_list.
350         * ipa-inline.c (cgraph_mark_inline_edge): Look for inline clones.
351         (cgraph_default_inline_p): Likewise.
352         (cgraph_decide_inlining_incrementally): Likewise.
353         * tree-inline.c (inline_data): Kill saving_p add update_clones_p.
354         (copy_bb): Kill saving; do updating of clones.
355         (copy_cfg_body): Kill saving.
356         (initialize_inlined-parameters): Likewise.
357         (expand_call_inline): Likewise.
358         (save_body): Kill.
359         (tree_function_versioning): New parameter "update_clones".
360         (inlining_p): Kill saving.
361         * tree-inline.h (tree_function_versioning): Update prototype.
362         * tree-optimize.c (tree_rest_of_compilation): Use clonning instead of
363         saving.
364
365 2006-01-11  Ian Lance Taylor <ian@airs.com>
366
367         * combine.c (struct undo): Remove is_int.  Enumify types of undos.
368         Allow undoing set of machine mode.
369         (do_SUBST): Use enums instead of is_int.
370         (do_SUBST_MODE): New function.
371         (SUBST_MODE): New macro.
372         (try_combine): Use SUBST_MODE/PUT_MODE instead of generating a new
373         reg and trying to replace reg_regno_rtx with a new register.
374         (undo_all): Use new enums, handle undoing a PUT_MODE change.
375         (simplify_set): Use SUBST_MODE.
376         (distribute_notes): Remove code that tried to update reg notes
377         for regno_reg_rtx changes.
378
379 2006-01-11  Paolo Bonzini  <bonzini@gnu.org>
380
381         PR tree-optimization/23109
382         PR tree-optimization/23948
383         PR tree-optimization/24123
384
385         * Makefile.in (tree-ssa-math-opts.o): Adjust dependencies.
386         * tree-cfg.c (single_noncomplex_succ): New.
387         * tree-flow.h (single_noncomplex_succ): Declare it.
388         * tree-ssa-math-opts.c (enum place_reciprocal): Remove.
389         * tree-ssa-math-opts.c (enum place_reciprocal): Remove.
390         (struct occurrence, occ_head, occ_pool, is_divide_by, compute_merit,
391         insert_bb, register_division_in, insert_reciprocals,
392         replace_reciprocal, free_bb): New.
393         (execute_cse_reciprocals_1): Rewritten.
394         (execute_cse_reciprocals): Adjust calls to execute_cse_reciprocals_1.
395         Do not commit any edge insertion.  Always compute dominators and
396         create the allocation pool.
397         * target-def.h (TARGET_MIN_DIVISIONS_FOR_RECIP_MUL): New.
398         * target.h (struct gcc_target): Add min_divistions_for_recip_mul.
399         * targhooks.c (default_min_divistions_for_recip_mul): New.
400         * targhooks.h (default_min_divistions_for_recip_mul): New prototype.
401         * passes.c (init_optimization_passes): Run recip after tree loop
402         optimizations.
403         * doc/tm.texi (Misc): Document TARGET_MIN_DIVISIONS_FOR_RECIP_MUL.
404
405 2005-01-11  Danny Berlin <dberlin@dberlin.org>
406             Kenneth Zadeck <zadeck@naturalbridge.com>
407
408         * df.h (DF_SCAN, DF_RU, DF_RD, DF_LR, DF_UR, DF_UREC, DF_CHAIN,
409         DF_RI, DF_LAST_PROBLEM_PLUS1, DF_DU_CHAIN, DF_UD_CHAIN,
410         DF_REF_TYPE_NAMES, DF_HARD_REGS, DF_EQUIV_NOTES, DF_SUBREGS,
411         DF_SCAN_BB_INFO, DF_RU_BB_INFO, DF_RD_BB_INFO, DF_LR_BB_INFO,
412         DF_UR_BB_INFO, DF_UREC_BB_INFO, DF_LIVE_IN, DF_LIVE_OUT,
413         DF_RA_LIVE_IN, DF_RA_LIVE_OUT, DF_UPWARD_LIVE_IN,
414         DF_UPWARD_LIVE_OUT, DF_REF_REAL_REG, DF_REF_REGNO,
415         DF_REF_REAL_LOC, DF_REF_REG, DF_REF_LOC, DF_REF_BB, DF_REF_BBNO,
416         DF_REF_INSN, DF_REF_INSN_UID, DF_REF_TYPE, DF_REF_CHAIN,
417         DF_REF_ID, DF_REF_FLAGS, DF_REF_NEXT_REG, DF_REF_PREV_REG,
418         DF_REF_NEXT_REF, DF_REF_DATA, DF_REF_REG_DEF_P, DF_REF_REG_USE_P,
419         DF_REF_REG_MEM_STORE_P, DF_REF_REG_MEM_LOAD_P, DF_REF_REG_MEM_P,
420         DF_DEFS_SIZE, DF_DEFS_GET, DF_DEFS_SET, DF_USES_SIZE, DF_USES_GET,
421         DF_USES_SET, DF_REG_SIZE, DF_REG_DEF_GET, DF_REG_DEF_SET,
422         DF_REG_USE_GET, DF_REG_USE_SET, DF_REGNO_FIRST_DEF,
423         DF_REGNO_LAST_USE, DF_INSN_SIZE, DF_INSN_GET, DF_INSN_SET,
424         DF_INSN_CONTAINS_ASM, DF_INSN_LUID, DF_INSN_DEFS, DF_INSN_USES,
425         DF_INSN_UID_GET, DF_INSN_UID_LUID, DF_INSN_UID_DEFS,
426         DF_INSN_UID_USES, DF_SCAN_INITIAL, DF_SCAN_GLOBAL,
427         DF_SCAN_POST_ALLOC): New macros.
428         (df_flow_dir, df_ref_type, df_ref_flags, df_alloc_function,
429         df_free_bb_function, df_local_compute_function, df_init_function,
430         df_dataflow_function, df_confluence_function_0,
431         df_confluence_function_n, df_transfer_function,
432         df_finalizer_function, df_free_function, df_dump_problem_function,
433         df_problem, dataflow, df_insn_info, df_reg_info, df_ref, df_link,
434         df_ref_info, df, df_map, df_scan_bb_info, df_ru_bb_info,
435         df_ru_bb_info, df_rd_bb_info, df_lr_bb_info, df_ur_bb_info,
436         df_urec_bb_info, ) New types.
437         (df_invalidated_by_call, df_all_hard_regs, df_state) New public
438         variables.
439         (df_init, df_add_problem, df_set_blocks, df_finish, df_analyze,
440         df_analyze_simple_change_some_blocks,
441         df_analyze_simple_change_one_block, df_compact_blocks,
442         df_bb_replace, df_bb_regno_last_use_find,
443         df_bb_regno_first_def_find, df_bb_regno_last_def_find,
444         df_insn_regno_def_p, df_find_def, df_find_use,
445         df_iterative_dataflow, df_dump, df_chain_dump, df_refs_chain_dump,
446         df_regs_chain_dump, df_insn_debug, df_insn_debug_regno,
447         df_regno_debug, df_ref_debug, debug_df_insn, debug_df_regno,
448         debug_df_reg, debug_df_defno, debug_df_useno, debug_df_ref,
449         debug_df_chain, df_get_dependent_problem, df_chain_create,
450         df_chain_unlink, df_chain_copy, df_get_live_in, df_get_live_out,
451         df_grow_bb_info, df_chain_dump, df_print_bb_index,
452         df_ru_add_problem, df_ru_get_bb_info, df_rd_add_problem,
453         df_rd_get_bb_info, df_lr_add_problem, df_lr_get_bb_info,
454         df_ur_add_problem, df_ur_get_bb_info, df_urec_add_problem,
455         df_urec_get_bb_info, df_chain_add_problem, df_ri_add_problem,
456         df_reg_lifetime, df_scan_get_bb_info, df_scan_add_problem,
457         df_rescan_blocks, df_ref_create, df_get_artificial_defs,
458         df_get_artificial_uses, df_reg_chain_create, df_reg_chain_unlink,
459         df_ref_remove, df_insn_refs_delete, df_refs_delete,
460         df_reorganize_refs, df_set_state, df_hard_reg_init,
461         df_read_modify_subreg_p) New public functions.
462         * df-core.c: The core dataflow solver and glue routines for rtl
463         dataflow.
464         (df_init, df_add_problem, df_set_blocks, df_finish,
465         df_hybrid_search_forward, df_hybrid_search_backward,
466         df_iterative_dataflow, df_prune_to_subcfg, df_analyze_problem,
467         df_analyze, df_get_bb_info, df_set_bb_info, df_bb_replace,
468         df_bb_regno_last_use_find, df_bb_regno_first_def_find,
469         df_bb_regno_last_def_find, df_insn_regno_def_p, df_find_def,
470         df_reg_defined, df_find_use, df_reg_used, df_dump,
471         df_refs_chain_dump, df_regs_chain_dump, df_insn_debug,
472         df_insn_debug_regno, df_regno_debug, df_ref_debug, debug_df_insn,
473         debug_df_reg, debug_df_regno, debug_df_ref debug_df_defno,
474         debug_df_useno, reset_df_after_reload): New functions.
475         * df-scan.c: The scanning fuctions, once in df.c, completely
476         rewritten so that they now fully model the functionality of
477         register usage at the backend.
478         (df_scan_free_internal, df_scan_get_bb_info, df_scan_set_bb_info,
479         df_scan_free_bb_info, df_scan_alloc, df_scan_free, df_scan_dump,
480         df_scan_add_problem, df_grow_reg_info, df_grow_ref_info,
481         df_grow_insn_info, df_rescan_blocks, df_ref_create,
482         df_get_artificial_defs, df_get_artificial_uses,
483         df_reg_chain_create, df_ref_unlink, df_reg_chain_unlink,
484         df_ref_remove, df_insn_create_insn_record, df_insn_refs_delete,
485         df_refs_delete, df_reorganize_refs, df_set_state,
486         df_ref_create_structure, df_ref_record, df_read_modify_subreg_p,
487         df_def_record_1, df_defs_record, df_uses_record,
488         df_insn_contains_asm_1, df_insn_contains_asm, df_insn_refs_record,
489         df_has_eh_preds, df_bb_refs_record, df_refs_record, df_mark_reg,
490         df_record_exit_block_uses, df_hard_reg_init): New functions.
491
492         * df-problems.c: Seven concrete dataflow problems that use the
493         scanning in df-scan.c and are solved by the engine in df-core.c.
494         (df_get_dependent_problem, df_chain_create, df_chain_unlink,
495         df_chain_copy, df_get_live_in, df_get_live_out, df_grow_bb_info,
496         df_chain_dump, df_print_bb_index, df_ref_bitmap, df_set_seen,
497         df_unset_seen, df_ru_get_bb_info, df_ru_set_bb_info,
498         df_ru_free_bb_info, df_ru_alloc,
499         df_ru_bb_local_compute_process_def,
500         df_ru_bb_local_compute_process_use, df_ru_bb_local_compute,
501         df_ru_local_compute, df_ru_init_solution, df_ru_confluence_n,
502         df_ru_transfer_function, df_ru_free, df_ru_dump,
503         df_ru_add_problem, df_rd_get_bb_info, df_rd_set_bb_info,
504         df_rd_free_bb_info, df_rd_alloc,
505         df_rd_bb_local_compute_process_def, df_rd_bb_local_compute,
506         df_rd_local_compute, df_rd_init_solution, df_rd_confluence_n,
507         df_rd_transfer_function, df_rd_free, df_rd_dump,
508         df_rd_add_problem, df_lr_get_bb_info, df_lr_set_bb_info,
509         df_lr_free_bb_info, df_lr_alloc, df_lr_bb_local_compute,
510         df_lr_local_compute, df_lr_init, df_lr_confluence_0,
511         df_lr_confluence_n, df_lr_transfer_function, df_lr_free,
512         df_lr_dump, df_lr_add_problem, df_ur_get_bb_info,
513         df_ur_set_bb_info, df_ur_free_bb_info, df_ur_alloc,
514         df_ur_bb_local_compute, df_ur_local_compute, df_ur_init,
515         df_ur_local_finalize, df_ur_confluence_n, df_ur_transfer_function,
516         df_ur_free, df_ur_dump, df_ur_add_problem, df_urec_get_bb_info,
517         df_urec_set_bb_info, df_urec_free_bb_info, df_urec_alloc,
518         df_urec_mark_reg_change, df_urec_check_earlyclobber,
519         df_urec_mark_reg_use_for_earlyclobber,
520         df_urec_mark_reg_use_for_earlyclobber_1, df_urec_bb_local_compute,
521         df_urec_local_compute, df_urec_init, df_urec_local_finalize,
522         df_urec_confluence_n, df_urec_transfer_function, df_urec_free,
523         df_urec_dump, df_urec_add_problem, df_chain_alloc,
524         df_chain_create_bb_process_use, df_chain_create_bb,
525         df_chain_finalize, df_chain_free, df_chains_dump,
526         df_chain_add_problem, df_ri_alloc, df_ri_bb_compute,
527         df_ri_compute, df_ri_free, df_ri_dump, df_ri_add_problem,
528         df_reg_lifetime): New functions.
529         * df.c: Deleted file.
530         * ddg.c (create_ddg_dep_no_link, build_inter_loop_deps): Made code
531         consistent with new df api.
532         * modulo-sched.c (sms_schedule, rest_of_handle_sms,
533         rest_of_handle_sms): Ditto.
534         * web.c (unionfind_union, union_defs, entry_register, web_main):
535         Ditto.
536         * loop_invariant.c (invariant_for_use, hash_invariant_expr_1,
537         invariant_expr_equal_p, find_defs, check_dependencies,
538         find_invariant_insn, find_invariants_to_move, move_invariant_reg,
539         free_inv_motion_data, move_loop_invariants): Ditto.
540         * Makefile.in (df.c, df-scan.c df-problems.c df-core.c): 
541         Update dependencies.
542         (odf.c): Added defective entry that was deleted later in day.
543         * sched-deps.c (sched_analyze_1): Ditto.
544
545 2006-01-11  Zdenek Dvorak <dvorakz@suse.cz>
546
547         * tree-ssa-operands.c (get_expr_operands): Record addressable
548         variables directly.  Do not call add_stmt_operands for CONST_DECLs
549         and ARRAY_DECLs.
550         (get_indirect_ref_operands): Remove handling of *(&a + offset) case.
551         (add_stmt_operands): Handle only objects satisfying SSA_VAR_P.
552
553 2006-01-11  Ben Elliston  <bje@au.ibm.com>
554
555         * config/i386/i386.c (ix86_return_in_memory): Fix comment: this
556         function returns true in the positive case.
557
558 2006-01-10  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
559
560         PR target/20754
561         * config/pa/pa.md: Create separate 32 and 64-bit move patterns
562         for SI, DI, SF and DF modes.  Add alternatives to copy between
563         general and floating point registers to the 32-bit patterns.
564         * config/pa/pa-64.h (SECONDARY_MEMORY_NEEDED_RTX): Delete undefine.
565         * config/pa/pa.h (SECONDARY_MEMORY_NEEDED_RTX): Delete define.
566         (SECONDARY_MEMORY_NEEDED): Secondary memory is only needed when
567         generating 64-bit code.
568         * config/pa/pa.c (output_move_double): Handle copies between general
569         and floating registers.
570
571 2006-01-10  Stuart Hastings  <stuart@apple.com>
572
573         * config/i386/i386.md (set_got): Update.
574         (set_got_labelled): New.  (UNSPEC_LD_MPIC): New.
575         (builtin_setjmp_receiver): Mach-O support.
576         * config/i386/darwin.h (TARGET_ASM_FILE_END) Define.
577         (GOT_SYMBOL_NAME): Define.
578         (FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN): New.
579         (TARGET_DEEP_BRANCH_PREDICTION): Remove.
580         * config/i386/i386.c (override_options): Revise for Darwin.
581         (USE_HIDDEN_LINKONCE): Enable for Mach-O.  (ix86_file_end): Mach-O
582         support.  (darwin_x86_file_end): New.  (output_set_got): Add label
583         parameter, revise for Mach-O.  (x86_output_mi_thunk): Likewise.
584         * config/i386/i386-protos.h (output_set_got): Likewise.
585         * config/darwin.c (machopic_legitimize_pic_address): Update
586         regs_ever_live[].
587
588 2006-01-10  Kaz Kojima  <kkojima@gcc.gnu.org>
589
590         * config/sh/sh.h (SH5_WOULD_BE_PARTIAL_NREGS): Use GET_MODE_SIZE
591         when MODE isn't BLKmode.
592
593 2006-01-10  Eric Botcazou  <ebotcazou@libertysurf.fr>
594
595         PR rtl-optimization/25367
596         * config/sparc/sparc.h (HARD_REGNO_RENAME_OK): New macro.
597
598 2006-01-10  Hans-Peter Nilsson  <hp@axis.com>
599
600         PR target/25718
601         * config/cris/cris.md ("uminsi3"): Don't use 8- or 16-bit sizes
602         for a negative bound.
603
604 2006-01-10  Richard Guenther  <rguenther@suse.de>
605
606         * tree-ssa-structalias.c (get_constraint_for_component_ref):
607         Never override with anything constraint.
608
609 2006-01-10  Jan Beulich  <jbeulich@novell.com>
610
611         * config/i386/i386.c (ix86_data_alignment): Don't force alignment to
612         256 bits when optimize_size.
613
614 2006-01-10  Jan Beulich  <jbeulich@novell.com>
615
616         * config/i386/netware.h (TARGET_SUBTARGET_DEFAULT): Include
617         MASK_ALIGN_DOUBLE.
618         * config/i386/nwld.h (LINK_SPEC): Add --extensions:GNU option.
619         * config/i386/t-nwld (SHLIB_LINK): Insert spaces between expr
620         arguments.
621
622 2006-01-10  Ben Elliston  <bje@au.ibm.com>
623
624         * config/rs6000/predicates.md (easy_fp_constant): Discount decimal
625         float modes.
626         * config/rs6000/rs6000.c (rs6000_scalar_mode_supported_p): New.
627         (TARGET_SCALAR_MODE_SUPPORTED_P): Define.
628         (USE_FP_FOR_ARG): Reject decimal float modes.
629         (function_arg_advance): Likewise.
630         (output_toc): Handle emitting TDmode, DDmode and SDmode constants.
631         (rs6000_handle_altivec_attribute): Do not permit decimal floating
632         point types in AltiVec vectors.
633         (rs6000_function_value): Use GP_ARG_RETURN for decimal floats.
634         (rs6000_libcall_value): Likewise.
635
636 2006-01-09  Bob Wilson  <bob.wilson@acm.org>
637
638         * config/xtensa/ieee754-df.S: New file.
639         * config/xtensa/ieee754-sf.S: New file.
640         * config/xtensa/t-xtensa (LIB2FUNCS_EXTRA): Remove fp-bit.c & dp-bit.c.
641         (LIB1ASMFUNCS): Add SFmode and DFmode floating-point functions.
642         * config/xtensa/lib1funcs.asm: Include ieee754-df.S and ieee754-sf.S.
643
644 2006-01-09  Kazu Hirata  <kazu@codesourcery.com>
645
646         * config/sh/predicates.md (binary_float_operator,
647         binary_logical_operator, commutative_float_operator,
648         equality_comparison_operator, greater_comparison_operator,
649         less_comparison_operator, logical_operator,
650         noncommutative_float_operator, shift_operator,
651         symbol_ref_operand, unary_float_operator): Remove redundant
652         conditionals.
653
654 2006-01-09  Jeff Law  <law@redhat.com>
655
656         * tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Remove
657         code to propagate the RHS of a cast into COND_EXPR_COND.  Remove
658         now unused arguments.  Callers updated.
659         (eliminate_redundant_computations): Remove now unused arguments,
660         callers updated.
661         (local_fold): Remove, no longer used.
662         (find_equivalent_equality_comparison): Removed from tree-ssa-dom.c
663         and moved to...
664         * tree-ssa-forwprop.c (find_equivalent_equality_comparison): Here.
665         (simplify_cond): New function.
666         (forward_propagate_into_cond): Call simplify_cond.
667
668 2006-01-09  Alexandre Oliva  <aoliva@redhat.com>
669
670         * config/i386/sse.md (*vec_extractv2di_1_sse2): New.
671         (*vec_extractv2di_1_sse): New.
672
673 2006-01-09  Ben Elliston  <bje@au.ibm.com>
674
675         * config/rs6000/rs6000.h (GO_IF_LEGITIMATE_ADDRESS): Typo fix.
676
677 2006-01-08  Richard Guenther  <rguenther@suse.de>
678
679         * tree-ssa-structalias.c (get_constraint_for): Remove
680         anyoffset argument.
681         (get_constraint_for_component_ref): Likewise.
682         (do_deref): Likewise.
683         (get_constraint_for): Likewise.
684         (do_structure_copy): Likewise.
685         (handle_ptr_arith): Likewise.
686         (find_func_aliases): Likewise.  Remove unused need_anyoffset
687         variable.
688
689 2006-01-08  J"orn Rennecke  <joern.rennecke@st.com>
690             Kaz Kojima  <kkojima@gcc.gnu.org>
691
692         * config/sh/sh.h (CONST_OK_FOR_K16): Define.
693         (CONST_OK_FOR_K): Add CONST_OK_FOR_K16 case.
694         (EXTRA_CONSTRAINT_C16): Remove.
695         (EXTRA_CONSTRAINT_Css, EXTRA_CONSTRAINT_Csu): Define.
696         (EXTRA_CONSTRAINT_C): Remove EXTRA_CONSTRAINT_C16 case and add
697         EXTRA_CONSTRAINT_Css and EXTRA_CONSTRAINT_Csu cases.
698         * config/sh/sh.c (print_operand): Handle unsigned 16-bit symbolic
699         constants of SHmedia.  Handle nested constant expressions of
700         SHmedia correctly.
701         (andcosts): Fix the costs for SHmedia constants.
702         (sh_rtx_costs): Take account of outer_code for SHmedia constants.
703         * config/sh/sh.md (*movsi_media): Use Css constraint instead of C16.
704         (*movsi_media_nofpu, *movqi_media, *movhi_media): Likewise.
705         (*movdi_media, *movdi_media_nofpu, movv8qi_i, movv2hi_i): Likewise.
706         (movv4hi_i, movv2si_i): Likewise.
707         (movsi_const): Adjust the second operand of ior so to match with
708         the Csu constraint.
709         (movdi_const, movdi_const_32bit): Likewise.
710         (movdi_const_16bit+1): Don't sign-extend LOW.
711         (movdi_const_16bit+2): Likewise.  Remove the zero_extend and truncate
712         step.
713         (*double_shori): Fix the split condition.  Use GEN_INT instead
714         of get_int_mode calls.  Mask lower 16-bit of the argument of
715         the last GEN_INT.
716         (sym2GOTPLT): Remove.
717         (symGOTPLT2reg): Replace gen_sym2GOTPLT with gen_rtx_CONST and
718         gen_rtx_UNSPEC.
719         * config/sh/predicates.md (arith_operand): Use EXTRA_CONSTRAINT_Css
720         instead of EXTRA_CONSTRAINT_C16.
721
722 2006-01-07  Ian Lance Taylor  <ian@airs.com>
723             David Edelsohn  <edelsohn@gnu.org>
724
725         PR rtl-optimization/25662
726         * optabs.c (simplify_expand_binop): Use simplify_binary_operation
727         for constant operands instead of simplify_gen_binary.
728         * simplify-rtx.c (simplify_gen_binary): Swap commutative operands
729         after trying simplify_binary_operation
730
731 2006-01-06  Daniel Berlin  <dberlin@dberlin.org>
732
733         * tree.c (iterative_hash_expr): Hash decls based on UID.
734
735 2006-01-06  Eric Christopher  <echristo@apple.com>
736
737         * doc/tm.texi (TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL): Document.
738         (TARGET_UNWIND_EMIT): Fix spelling.
739         * target.h (gcc_target): Add except_table_label.
740         * except.c (output_function_exception_table): Use.
741         * varasm.c (default_emit_except_table_label): New.
742         * target-def.h (TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL): New default
743         define.
744         (asm_out): Add here.
745         * output.h (default_emit_except_table_label): Prototype.
746         * config/darwin-protos.h (darwin_emit_except_table_label): Ditto.
747         * config/darwin.c (darwin_emit_except_table_label): Define.
748         * config/darwin.h (TARGET_ASM_EMIT_EXCEPT_TABLE): Ditto.
749
750 2006-01-06  Zdenek Dvorak <dvorakz@suse.cz>
751
752         PR tree-optimization/18527
753         * tree-ssa-loop-niter.c (number_of_iterations_cond,
754         number_of_iterations_special, number_of_iterations_exit):
755         Move base and step of an iv to a single structure.  Add
756         no_overflow flag, and use it in # of iterations analysis.
757         * tree-scalar-evolution.c (analyze_scalar_evolution_in_loop): Add
758         folded_casts argument.
759         (simple_iv): Pass base and step in a structure.  Set no_overflow
760         flag.
761         (scev_const_prop): Add argument to analyze_scalar_evolution_in_loop.
762         Evaluate expensiveness of computing # of iterations instead of
763         the final expression.
764         * tree-scalar-evolution.h (affine_iv): New structure.
765         (simple_iv): Declaration changed.
766         * tree-chrec.c (chrec_apply): Handle chrecs containing symbols.
767         * tree-ssa-loop-ivopts.c (determine_biv_step, find_givs_in_stmt_scev,
768         find_givs_in_stmt): Changed due to simple_iv change.
769
770 2006-01-06  Jeff Law  <law@redhat.com>
771
772         PR ada/24994
773         * tree-cfg.c (bsi_replace): Rename final argument from
774         PRESERVE_EH_INFO to UPDATE_EH_INFO.  Fix typo in last
775         change (stmt -> orig_stmt).
776         * tree-eh.c (verify_eh_throw_stmt_node): New function.
777         (bsi_remove): Add new argument.  Remove EH information
778         if requested.
779         (verify_eh_throw_table_statements): New function.
780         (bsi_remove): Add new argument REMOVE_EH_INFO.  All callers
781         updated.
782         * tree-optimize.c (execute_free_cfg_annotations): Verify
783         the EH throw statement table after removing annotations.
784         * except.h (verify_eh_throw_table_statements): Prototype.
785         * tree-flow.h (bsi_remove): Update prototype.
786         * tree-vrp.c (remove_range_assertions): Add new argument to
787         bsi_remove call.
788         * tree-ssa-loop-im.c (move_computations_stmt): Likewise.
789         * tree-complex.c (expand_complex_div_wide): Likewise.
790         * tree-ssa-threadupdate.c (remove_ctrl_stmt_and_useless_edges): Likewise
791         * tree-tailcall.c (eliminate_tailcall): Likewise.
792         * tree-ssa-dse.c (dse_optimize_stmt): Likewise.
793         * tree-ssa-loop-ivopts.c (remove_statement): Likewise.
794         * tree-nrv.c (tree_nrv): Likewise.
795         * tree-vectorizer.c (slpeel_make_loop_iterate_ntimes): Likewise.
796         * tree-if-conv.c (tree_if_convert_cond_expr): Likewise.
797         (combine_blocks): Likewise.
798         * tree-ssa-phiopt.c (replace_phi_edge_with_variable): Likewise.
799         * tree-cfgcleanup.c (cleanup_ctrl_expr_graph): Likewise.
800         (cleanup_control_flow): Likewise.
801         (remove_forwarder_block): Likewise.
802         * tree-ssa-pre.c (remove_dead_inserted_code): Likewise.
803         * tree-sra.c (sra_replace): Likewise.
804         * tree-ssa-forwprop.c (forward_propagate_into_cond): Likewise.
805         (forward_propagate_single_use_vars): Likewise.
806         * tree-ssa-dce.c (remove_dead_stmt): Likewise.
807         * tree-inline.c (expand_call_inline): Likewise.
808         * tree-vect-transform.c (vect_transform_loop): Likewise.
809         * tree-outof-ssa.c (rewrite_trees): Likewise.
810         * tree-cfg.c (make_goto_expr_edges): Likewise.
811         (cleanup_dead_labels): Likewise.
812         (tree_merge_blocks, remove_bb, disband_implicit_edges): Likewise.
813         (bsi_move_before, bsi_move_after): Likewise.
814         (bsi_move_to_bb_end, try_redirect_by_replacing_jump): Likewise
815         (tree_redirect_edge_and_branch, tree_split_block): Likewise.
816
817 2006-01-06  Andrew Pinski  <pinskia@physics.uc.edu>
818
819         PR tree-opt/25528
820         * tree-ssa-alias.c (find_used_portions): Handle REALPART_EXPR
821         and IMAGPART_EXPR.
822         * tree-flow-inline.h (var_can_have_subvars): Handle complex types
823         on non gimple variables.  Also add checks at the top for decls and
824         mtags.
825         * tree-ssa-structalias.c (push_fields_onto_fieldstack): Handle
826         complex types.
827         * tree-ssa-operands.c (parse_ssa_operands): Handle REALPART_EXPR
828         and IMAGPART_EXPR for creating MUST_DEFs.
829         (get_expr_operands): Handle SSA_NAME, STRUCT_FIELD_TAG, TYPE_MEMORY_TAG,
830         and NAME_MEMORY_TAG separately from the DECLs.
831
832 2006-01-06  Richard Guenther  <rguenther@suse.de>
833
834         * tree-dfa.c (mark_new_vars_to_rename): Create stmt
835         annotation, if necessary.
836         * tree-ssa-pre.c (create_expression_by_pieces): Remove
837         redundant calls to update_stmt.
838         * tree-ssa-forwprop.c (tidy_after_forward_propagate_addr):
839         Likewise.
840
841 2006-01-05  Richard Henderson  <rth@redhat.com>
842
843         * c-parser.c (c_parser_objc_methodprotolist): Handle CPP_PRAGMA.
844
845 2006-01-05  Carlos O'Donell  <carlos@codesourcery.com>
846
847         * c-typeck.c: Update copyright date.
848
849 2006-01-05  Carlos O'Donell  <carlos@codesourcery.com>
850
851         * c-typeck.c (build_c_cast): Always warn when casting
852         from a pointer to an integer of different size, even if
853         the node was constant.
854
855 2006-01-05  Richard Guenther  <rguenther@suse.de>
856
857         PR tree-optimization/22555
858         * tree-ssa-alias.c (create_overlap_variables_for): Do not give up,
859         if one structure field is an array.
860         * tree-ssa-operands.c (get_expr_operands): Continue scanning
861         operands even if we found a subvar, but ignore VOPs in this
862         case.
863         * tree-ssa-loop-ivopts.c (rewrite_use): Mark new vars in stmt
864         for renaming.
865         * tree-ssa-loop.c (pass_iv_optimize): Schedule TODO_update_ssa.
866
867 2006-01-05  Richard Earnshaw  <rearnsha@arm.com>
868
869         PR middle-end/24998
870         * arm/t-netbsd (LIB2FUNCS_EXTRA): Define.
871
872 2006-01-05  Richard Guenther  <rguenther@suse.de>
873             Diego Novillo  <dnovillo@redhat.com>
874
875         * tree-pass.h (TODO_remove_unused_locals): Define.
876         * gimple-low.c (expand_var_p, remove_useless_vars,
877         pass_remove_useless_vars): Remove.  Update all users.
878         * tree-ssa-live.c (mark_all_vars_used_1): Handle SSA names.
879         (remove_unused_locals): New function.
880         * tree-flow.h (remove_unused_locals): Declare.
881         * passes.c (execute_todo): Call remove_unused_locals if
882         TODO_remove_unused_locals is set.
883         * tree-into-ssa.c (pass_build_ssa): Add TODO_remove_unused_locals.
884         * tree-ssa-dce.c (pass_dce): Likewise.
885         * tree-outof-ssa.c (pass_del_ssa): Likewise.
886
887 2006-01-05  Richard Guenther  <rguenther@suse.de>
888
889         * tree-flow.h (struct fieldoff): Decompose field to
890         type, size and decl.
891         * tree-ssa-alias.c (create_sft): Take type as parameter.
892         (create_overlap_variables_for): Store type, size and decl
893         in the fieldoff structure.
894         * tree-ssa-structalias.c (fieldoff_compare): Adjust users
895         of struct fieldoff.
896         (push_fields_onto_fieldstack): Likewise.
897         (create_variable_info_for): Likewise.  Use offset for the
898         SFT name if the decl is not available.
899
900 2006-01-04  Paul Brook  <paul@codesourcery.com>
901
902         * config/m68k/m68k.c (m68k_output_mi_thunk): Use jmp, not jsr.
903
904 2006-01-04  Daniel Berlin  <dberlin@dberlin.org>
905
906         * lambda-code.c (can_put_in_inner_loop): Relax
907         restrictions.
908         (can_put_after_inner_loop): New function.
909         (can_convert_to_perfect_nest): Use can_put_after_inner_loop as well.
910         (perfect_nestify): Change to make copies and modify uses.
911
912 2006-01-04  Richard Henderson  <rth@redhat.com>
913
914         Merge from gomp branch:
915         * c-lex.c (c_lex_with_flags) <CPP_PRAGMA>: Smuggle pragma id
916         via integer constant.
917         (pragma_lex): Remove.
918         * c-pch.c (c_common_pch_pragma): Accept the name as an argument,
919         rather than parsing it.
920         * c-pragma.c (handle_pragma_weak, handle_pragma_redefine_extname,
921         handle_pragma_extern_prefix): Add %< %> quotes.
922         (registered_pragmas): New.
923         (c_register_pragma_1): New.
924         (c_register_pragma): Use it.
925         (c_register_pragma_with_expansion): Likewise.
926         (c_invoke_pragma_handler): New.
927         (init_pragma): Use cpp_register_deferred_pragma directly for
928         pch_preprocess.
929         * c-pragma.h (enum pragma_kind): New.
930         (pragma_handler): New.
931         (c_invoke_pragma_handler): Declare.
932         * c-common.c (c_parse_error): Pretty print CPP_PRAGMA and
933         CPP_PRAGMA_EOL.
934         * c-common.h (c_common_pch_pragma): Update decl.
935         * Makefile.in (c-parser.o): Update dependencies.
936         (GTFILES): Add c-pragma.h.
937         * c-parser.c (struct c_token): Add pragma_kind.
938         (struct c_parser): Add in_pragma.
939         (c_lex_one_token): Always initialize keyword and pragma_kind.
940         Extract data for CPP_PRAGMA.
941         (c_parser_peek_2nd_token): Deny CPP_PRAGMA_EOL.
942         (c_parser_consume_token): Don't allow CPP_PRAGMA unless errors.
943         Don't allow CPP_PRAGMA_EOL if in_pragma.
944         (c_parser_consume_pragma): New.
945         (c_parser_skip_until_found): Stop on CPP_PRAGMA_EOL.
946         (c_parser_skip_to_end_of_parameter): Likewise.
947         (c_parser_skip_to_end_of_block_or_statement): Likewise.
948         (c_parser_skip_to_pragma_eol): New.
949         (c_parser_external_declaration): Handle CPP_PRAGMA.
950         (c_parser_compound_statement_nostart): Likewise.
951         (c_parser_statement_after_labels): Likewise.
952         (c_parser_pragma): New.
953         (pragma_lex): Likewise.
954         (c_parser_pragma_pch_preprocess): New.
955         (c_parser_new): Merge into ...
956         (c_parse_file): ... here.  Call c_parser_pragma_pch_preprocess.
957
958 2006-01-04  Jeff Law  <law@redhat.com>
959
960         PR ada/24994
961         * tree-cfg.c (bsi_replace): Remove the original statement
962         from the EH throw statement table.
963
964 2006-01-04  Jakub Jelinek  <jakub@redhat.com>
965
966         * config/i386/pmm_malloc.h (posix_memalign): If __cplusplus,
967         make the prototype extern "C" and add throw ().
968
969         PR target/25554
970         * config/i386/i386.md (testqi_ext_3): Ensure len is positive
971         and pos non-negative and pos + len <= 32.
972         (testqi_ext_3_rex64): Ensure len is positive and pos non-negative,
973         drop pos + len < HOST_BITS_PER_WIDE_INT test.
974         (testqi_ext_3* splitter): Handle pos + len == HOST_BITS_PER_WIDE_INT.
975
976         PR c/25559
977         * c-common.c (handle_vector_size_attribute): Reject zero vector size
978         as well as sizes not multiple of component size.
979
980         PR debug/25562
981         * function.c (instantiate_expr): New function.
982         (instantiate_decls_1, instantiate_decls): If DECL_HAS_VALUE_EXPR_P,
983         walk its DECL_VALUE_EXPR with instantiate_expr.
984
985         * dwarf2out.c (loc_descriptor_from_tree_1): Don't add
986         DW_OP_deref{,_size} if address isn't going to be added.
987
988 2006-01-04  Ben Elliston  <bje@au.ibm.com>
989
990         * config/fp-bit.h: Use top-of-file comment from libgcc2.c.
991         * config/fp-bit.c: Likewise.
992
993 2006-01-03  Daniel Berlin  <dberlin@dberlin.org>
994
995         * dominance.c: Add comment about why we use DFS numbering
996         of dominance tree.
997
998 2006-01-03  Jakub Jelinek  <jakub@redhat.com>
999             Richard Henderson  <rth@redhat.com>
1000
1001         Merge from gomp-branch:
1002         * varasm.c (assemble_variable): Handle thread-local COMMON data.
1003         * defaults.h (ASM_OUTPUT_TLS_COMMON): Define.
1004
1005 2006-01-03  Paolo Bonzini  <bonzini@gnu.org>
1006
1007         PR rtl-optimization/25578
1008         * combine.c (combine_simplify_rtx, force_to_mode): Don't
1009         pass a parameter to simplify_shift_const if changing ASHIFTRT
1010         to LSHIFTRT.
1011
1012 2006-01-03  Adrian Straetling  <straetling@de.ibm.com>
1013
1014         * builtins.c (get_builtin_sync_mem): New function.
1015         (expand_builtin_sync_operation, expand_builtin_compare_and_swap,
1016         expand_builtin_lock_test_and_set, expand_builtin_lock_release):
1017         Call get_builtin_sync_mem to generate mem rtx.
1018
1019 2006-01-03  Richard Guenther  <rguenther@suse.de>
1020
1021         PR c/25183
1022         * stmt.c (add_case_node): Make sure to clear overflow flags
1023         from ranges.
1024
1025 2006-01-03  Jakub Jelinek  <jakub@redhat.com>
1026
1027         Merge from gomp-branch.
1028         * config/sparc/sync.md: New file.
1029         * config/sparc/sparc.md (UNSPECV_MEMBAR, UNSPECV_CAS, UNSPECV_SWAP,
1030         UNSPECV_LDSTUB): New constants.
1031         * config/sparc/sparc.c (sparc_expand_compare_and_swap_12): New function.
1032         * config/sparc/predicates.md (memory_reg_operand): New predicate.
1033         * config/sparc/sparc-protos.h (sparc_expand_compare_and_swap_12): New
1034         prototype.
1035
1036 2006-01-03  Roger Sayle  <roger@eyesopen.com>
1037
1038         * combine.c (reg_subword_p): New predicate to test whether the
1039         destination of a set refers to a subword/piece of a register.
1040         (try_combine): Generalize the code to merge the setting of a
1041         pseudo to a constant followed by a set of a subword of that
1042         register to a constant.
1043
1044 2006-01-03  Kazu Hirata  <kazu@codesourcery.com>
1045
1046         * basic-block.h (control_flow_graph): Change the type of
1047         x_label_to_block_map to VEC(basic_block,gc) *.
1048         * tree-cfg.c (init_empty_tree_cfg, label_to_block_fn,
1049         set_bb_for_stmt): Adjust the uses of x_label_to_block_map.
1050
1051         * tree-ssa-propagate.c (cfg_blocks): Change the type to
1052         VEC(basic_block,heap) *.
1053         (cfg_blocks_add, cfg_blocks_get, ssa_prop_init,
1054         ssa_prop_fini): Adjust the uses of cfg_blocks.
1055
1056 2006-01-03  Steven Bosscher  <stevenb.gcc@gmail.com>
1057
1058         * fold-const.c (operand_equal_p): Accept a NULL operand 0 for
1059         COMPONENT_REFs.
1060         * emit-rtl.c (mem_attrs_htab_eq): Use iterative_hash_expr for
1061         hashing trees instead of a pointer hash.
1062         (mem_attrs_htab_eq): Do a deep compare instead of a pointer
1063         compare for MEM_EXPR.
1064
1065         PR rtl-optimization/25130
1066         * cse.c (exp_equiv_p): Compare MEM_ATTRS instead of MEM_ALIAS_SET
1067         when comparing MEMs for GCSE
1068
1069 2006-01-03  Ben Elliston  <bje@au.ibm.com>
1070
1071         * targhooks.h (default_decimal_float_supported_p): Declare.
1072         * targhooks.c (default_decimal_float_supported_p): Define.
1073         * target-def.h (TARGET_DECIMAL_FLOAT_SUPPORTED_P): Redefine to
1074         `default_decimal_float_supported_p'.
1075         * doc/tm.texi (TARGET_DECIMAL_FLOAT_SUPPORTED_P): Update.
1076
1077 2006-01-02  Adam Nemet  <anemet@caviumnetworks.com>
1078
1079         * combine.c (apply_distributive_law <SUBREG>): Check
1080         TRULY_NOOP_TRUNCATION.
1081
1082 2006-01-02  Geoffrey Keating  <geoffk@apple.com>
1083
1084         * dwarf2out.c (have_switched_text_section): Delete.
1085         (have_multiple_function_sections): New.
1086         (have_location_lists): Make 'bool'.
1087         (add_AT_loc_list): Use 'true' not '1'.
1088         (dwarf2out_switch_text_section): Set have_multiple_function_sections.
1089         (output_loc_list): Use have_multiple_function_sections.
1090         (output_ranges): Likewise.
1091         (dwarf2out_begin_function): Set have_multiple_function_sections if
1092         necessary.
1093         (dwarf2out_source_line): Don't fake separate_line_info_table_in_use.
1094         Check function_section rather than DECL_SECTION_NAME.
1095         (dwarf2out_finish): Use have_multiple_function_sections.
1096         Don't clear have_location_lists.
1097
1098 2006-01-02  Eric Botcazou  <ebotcazou@adacore.com>
1099             Jan Hubicka  <jh@suse.cz>
1100
1101         * cfglayout.c (fixup_reorder_chain): Remove kludge for the
1102         case of conditional jump jumping to the next instruction.
1103         * cfgrtl.c (force_nonfallthru_and_redirect): Accept all
1104         cases of conditional jump jumping to the next instruction.
1105
1106 2006-01-02  Jan Hubicka  <jh@suse.cz>
1107
1108         * i386.c (*_cost): Add COSTS_N_INSNS.
1109         (ix86_rtx_costs): Do not use COSTS_N_INSNS.
1110
1111 2006-01-02  Paolo Bonzini  <bonzini@gnu.org>
1112
1113         PR target/25259
1114         * Makefile.in (DECNUMINC): Include libdecnumber's build directory.
1115
1116 2006-01-02  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
1117
1118         * config/arm/arm.c (all_fpus): Fix comment typo.
1119         * config/darwin.c: Likewise.
1120         * config/frv/frv.h (FRV_STRUCT_VALUE_REGNUM): Likewise.
1121         * config/h8300/h8300.md (extendqisi2_h8300hs): Likewise.
1122         * config/m68hc11/m68hc11.c (m68hc11_reload_operands): Likewise.
1123
1124 2006-01-01  David Edelsohn  <edelsohn@gnu.org>
1125
1126         * config/rs6000/rs6000.c (rs6000_expand_compare_and_swapqhi): New.
1127         (rs6000_split_compare_and_swapqhi): New.
1128         * config/rs6000/sync.md (sync_compare_and_swap{hi,qi}): New.
1129         (sync_compare_and_swapqhi_internal): New.
1130         * config/rs6000/rs6000-protos.h: Declare.