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PR target/20754
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1 2006-01-10  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
2
3         PR target/20754
4         * pa.md: Create separate 32 and 64-bit move patterns for SI, DI, SF
5         and DF modes.  Add alternatives to copy between general and floating
6         point registers to the 32-bit patterns.
7         * pa-64.h (SECONDARY_MEMORY_NEEDED_RTX): Delete undefine.
8         * pa.h (SECONDARY_MEMORY_NEEDED_RTX): Delete define.
9         (SECONDARY_MEMORY_NEEDED): Secondary memory is only needed when
10         generating 64-bit code.
11         * pa.c (output_move_double): Handle copies between general and
12         floating registers.
13
14 2006-01-10  Stuart Hastings  <stuart@apple.com>
15
16         * gcc/config/i386/i386.md (set_got): Update.
17         (set_got_labelled): New.  (UNSPEC_LD_MPIC): New.
18         (builtin_setjmp_receiver): Mach-O support.
19         * gcc/config/i386/darwin.h (TARGET_ASM_FILE_END) Define.
20         (GOT_SYMBOL_NAME): Define.
21         (FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN): New.
22         (TARGET_DEEP_BRANCH_PREDICTION): Remove.
23         * gcc/config/i386/i386.c (override_options): Revise for Darwin.
24         (USE_HIDDEN_LINKONCE): Enable for Mach-O.  (ix86_file_end): Mach-O
25         support.  (darwin_x86_file_end): New.  (output_set_got): Add label
26         parameter, revise for Mach-O.  (x86_output_mi_thunk): Likewise.
27         * gcc/config/i386/i386-protos.h (output_set_got): Likewise.
28         * gcc/config/darwin.c (machopic_legitimize_pic_address): Update
29         regs_ever_live[].
30
31 2006-01-10  Kaz Kojima  <kkojima@gcc.gnu.org>
32
33         * config/sh/sh.h (SH5_WOULD_BE_PARTIAL_NREGS): Use GET_MODE_SIZE
34         when MODE isn't BLKmode.
35
36 2006-01-10  Eric Botcazou  <ebotcazou@libertysurf.fr>
37
38         PR rtl-optimization/25367
39         * config/sparc/sparc.h (HARD_REGNO_RENAME_OK): New macro.
40
41 2006-01-10  Hans-Peter Nilsson  <hp@axis.com>
42
43         PR target/25718
44         * config/cris/cris.md ("uminsi3"): Don't use 8- or 16-bit sizes
45         for a negative bound.
46
47 2006-01-10  Richard Guenther  <rguenther@suse.de>
48
49         * tree-ssa-structalias.c (get_constraint_for_component_ref):
50         Never override with anything constraint.
51
52 2006-01-10  Jan Beulich  <jbeulich@novell.com>
53
54         * config/i386/i386.c (ix86_data_alignment): Don't force alignment to
55         256 bits when optimize_size.
56
57 2006-01-10  Jan Beulich  <jbeulich@novell.com>
58
59         * config/i386/netware.h (TARGET_SUBTARGET_DEFAULT): Include
60         MASK_ALIGN_DOUBLE.
61         * config/i386/nwld.h (LINK_SPEC): Add --extensions:GNU option.
62         * config/i386/t-nwld (SHLIB_LINK): Insert spaces between expr
63         arguments.
64
65 2006-01-10  Ben Elliston  <bje@au.ibm.com>
66
67         * config/rs6000/predicates.md (easy_fp_constant): Discount decimal
68         float modes.
69         * config/rs6000/rs6000.c (rs6000_scalar_mode_supported_p): New.
70         (TARGET_SCALAR_MODE_SUPPORTED_P): Define.
71         (USE_FP_FOR_ARG): Reject decimal float modes.
72         (function_arg_advance): Likewise.
73         (output_toc): Handle emitting TDmode, DDmode and SDmode constants.
74         (rs6000_handle_altivec_attribute): Do not permit decimal floating
75         point types in AltiVec vectors.
76         (rs6000_function_value): Use GP_ARG_RETURN for decimal floats.
77         (rs6000_libcall_value): Likewise.
78
79 2006-01-09  Bob Wilson  <bob.wilson@acm.org>
80
81         * config/xtensa/ieee754-df.S: New file.
82         * config/xtensa/ieee754-sf.S: New file.
83         * config/xtensa/t-xtensa (LIB2FUNCS_EXTRA): Remove fp-bit.c & dp-bit.c.
84         (LIB1ASMFUNCS): Add SFmode and DFmode floating-point functions.
85         * config/xtensa/lib1funcs.asm: Include ieee754-df.S and ieee754-sf.S.
86
87 2006-01-09  Kazu Hirata  <kazu@codesourcery.com>
88
89         * config/sh/predicates.md (binary_float_operator,
90         binary_logical_operator, commutative_float_operator,
91         equality_comparison_operator, greater_comparison_operator,
92         less_comparison_operator, logical_operator,
93         noncommutative_float_operator, shift_operator,
94         symbol_ref_operand, unary_float_operator): Remove redundant
95         conditionals.
96
97 2006-01-09  Jeff Law  <law@redhat.com>
98
99         * tree-ssa-dom.c (simplify_cond_and_lookup_avail_expr): Remove
100         code to propagate the RHS of a cast into COND_EXPR_COND.  Remove
101         now unused arguments.  Callers updated.
102         (eliminate_redundant_computations): Remove now unused arguments,
103         callers updated.
104         (local_fold): Remove, no longer used.
105         (find_equivalent_equality_comparison): Removed from tree-ssa-dom.c
106         and moved to...
107         * tree-ssa-forwprop.c (find_equivalent_equality_comparison): Here.
108         (simplify_cond): New function.
109         (forward_propagate_into_cond): Call simplify_cond.
110
111 2006-01-09  Alexandre Oliva  <aoliva@redhat.com>
112
113         * config/i386/sse.md (*vec_extractv2di_1_sse2): New.
114         (*vec_extractv2di_1_sse): New.
115
116 2006-01-09  Ben Elliston  <bje@au.ibm.com>
117
118         * config/rs6000/rs6000.h (GO_IF_LEGITIMATE_ADDRESS): Typo fix.
119
120 2006-01-08  Richard Guenther  <rguenther@suse.de>
121
122         * tree-ssa-structalias.c (get_constraint_for): Remove
123         anyoffset argument.
124         (get_constraint_for_component_ref): Likewise.
125         (do_deref): Likewise.
126         (get_constraint_for): Likewise.
127         (do_structure_copy): Likewise.
128         (handle_ptr_arith): Likewise.
129         (find_func_aliases): Likewise.  Remove unused need_anyoffset
130         variable.
131
132 2006-01-08  J"orn Rennecke  <joern.rennecke@st.com>
133             Kaz Kojima  <kkojima@gcc.gnu.org>
134
135         * config/sh/sh.h (CONST_OK_FOR_K16): Define.
136         (CONST_OK_FOR_K): Add CONST_OK_FOR_K16 case.
137         (EXTRA_CONSTRAINT_C16): Remove.
138         (EXTRA_CONSTRAINT_Css, EXTRA_CONSTRAINT_Csu): Define.
139         (EXTRA_CONSTRAINT_C): Remove EXTRA_CONSTRAINT_C16 case and add
140         EXTRA_CONSTRAINT_Css and EXTRA_CONSTRAINT_Csu cases.
141         * config/sh/sh.c (print_operand): Handle unsigned 16-bit symbolic
142         constants of SHmedia.  Handle nested constant expressions of
143         SHmedia correctly.
144         (andcosts): Fix the costs for SHmedia constants.
145         (sh_rtx_costs): Take account of outer_code for SHmedia constants.
146         * config/sh/sh.md (*movsi_media): Use Css constraint instead of C16.
147         (*movsi_media_nofpu, *movqi_media, *movhi_media): Likewise.
148         (*movdi_media, *movdi_media_nofpu, movv8qi_i, movv2hi_i): Likewise.
149         (movv4hi_i, movv2si_i): Likewise.
150         (movsi_const): Adjust the second operand of ior so to match with
151         the Csu constraint.
152         (movdi_const, movdi_const_32bit): Likewise.
153         (movdi_const_16bit+1): Don't sign-extend LOW.
154         (movdi_const_16bit+2): Likewise.  Remove the zero_extend and truncate
155         step.
156         (*double_shori): Fix the split condition.  Use GEN_INT instead
157         of get_int_mode calls.  Mask lower 16-bit of the argument of
158         the last GEN_INT.
159         (sym2GOTPLT): Remove.
160         (symGOTPLT2reg): Replace gen_sym2GOTPLT with gen_rtx_CONST and
161         gen_rtx_UNSPEC.
162         * config/sh/predicates.md (arith_operand): Use EXTRA_CONSTRAINT_Css
163         instead of EXTRA_CONSTRAINT_C16.
164
165 2006-01-07  Ian Lance Taylor  <ian@airs.com>
166             David Edelsohn  <edelsohn@gnu.org>
167
168         PR rtl-optimization/25662
169         * optabs.c (simplify_expand_binop): Use simplify_binary_operation
170         for constant operands instead of simplify_gen_binary.
171         * simplify-rtx.c (simplify_gen_binary): Swap commutative operands
172         after trying simplify_binary_operation
173
174 2006-01-06  Daniel Berlin  <dberlin@dberlin.org>
175
176         * tree.c (iterative_hash_expr): Hash decls based on UID.
177
178 2006-01-06  Eric Christopher  <echristo@apple.com>
179
180         * doc/tm.texi (TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL): Document.
181         (TARGET_UNWIND_EMIT): Fix spelling.
182         * target.h (gcc_target): Add except_table_label.
183         * except.c (output_function_exception_table): Use.
184         * varasm.c (default_emit_except_table_label): New.
185         * target-def.h (TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL): New default
186         define.
187         (asm_out): Add here.
188         * output.h (default_emit_except_table_label): Prototype.
189         * config/darwin-protos.h (darwin_emit_except_table_label): Ditto.
190         * config/darwin.c (darwin_emit_except_table_label): Define.
191         * config/darwin.h (TARGET_ASM_EMIT_EXCEPT_TABLE): Ditto.
192
193 2006-01-06  Zdenek Dvorak <dvorakz@suse.cz>
194
195         PR tree-optimization/18527
196         * tree-ssa-loop-niter.c (number_of_iterations_cond,
197         number_of_iterations_special, number_of_iterations_exit):
198         Move base and step of an iv to a single structure.  Add
199         no_overflow flag, and use it in # of iterations analysis.
200         * tree-scalar-evolution.c (analyze_scalar_evolution_in_loop): Add
201         folded_casts argument.
202         (simple_iv): Pass base and step in a structure.  Set no_overflow
203         flag.
204         (scev_const_prop): Add argument to analyze_scalar_evolution_in_loop.
205         Evaluate expensiveness of computing # of iterations instead of
206         the final expression.
207         * tree-scalar-evolution.h (affine_iv): New structure.
208         (simple_iv): Declaration changed.
209         * tree-chrec.c (chrec_apply): Handle chrecs containing symbols.
210         * tree-ssa-loop-ivopts.c (determine_biv_step, find_givs_in_stmt_scev,
211         find_givs_in_stmt): Changed due to simple_iv change.
212
213 2006-01-06  Jeff Law  <law@redhat.com>
214
215         PR ada/24994
216         * tree-cfg.c (bsi_replace): Rename final argument from
217         PRESERVE_EH_INFO to UPDATE_EH_INFO.  Fix typo in last
218         change (stmt -> orig_stmt).
219         * tree-eh.c (verify_eh_throw_stmt_node): New function.
220         (bsi_remove): Add new argument.  Remove EH information
221         if requested.
222         (verify_eh_throw_table_statements): New function.
223         (bsi_remove): Add new argument REMOVE_EH_INFO.  All callers
224         updated.
225         * tree-optimize.c (execute_free_cfg_annotations): Verify
226         the EH throw statement table after removing annotations.
227         * except.h (verify_eh_throw_table_statements): Prototype.
228         * tree-flow.h (bsi_remove): Update prototype.
229         * tree-vrp.c (remove_range_assertions): Add new argument to
230         bsi_remove call.
231         * tree-ssa-loop-im.c (move_computations_stmt): Likewise.
232         * tree-complex.c (expand_complex_div_wide): Likewise.
233         * tree-ssa-threadupdate.c (remove_ctrl_stmt_and_useless_edges): Likewise
234         * tree-tailcall.c (eliminate_tailcall): Likewise.
235         * tree-ssa-dse.c (dse_optimize_stmt): Likewise.
236         * tree-ssa-loop-ivopts.c (remove_statement): Likewise.
237         * tree-nrv.c (tree_nrv): Likewise.
238         * tree-vectorizer.c (slpeel_make_loop_iterate_ntimes): Likewise.
239         * tree-if-conv.c (tree_if_convert_cond_expr): Likewise.
240         (combine_blocks): Likewise.
241         * tree-ssa-phiopt.c (replace_phi_edge_with_variable): Likewise.
242         * tree-cfgcleanup.c (cleanup_ctrl_expr_graph): Likewise.
243         (cleanup_control_flow): Likewise.
244         (remove_forwarder_block): Likewise.
245         * tree-ssa-pre.c (remove_dead_inserted_code): Likewise.
246         * tree-sra.c (sra_replace): Likewise.
247         * tree-ssa-forwprop.c (forward_propagate_into_cond): Likewise.
248         (forward_propagate_single_use_vars): Likewise.
249         * tree-ssa-dce.c (remove_dead_stmt): Likewise.
250         * tree-inline.c (expand_call_inline): Likewise.
251         * tree-vect-transform.c (vect_transform_loop): Likewise.
252         * tree-outof-ssa.c (rewrite_trees): Likewise.
253         * tree-cfg.c (make_goto_expr_edges): Likewise.
254         (cleanup_dead_labels): Likewise.
255         (tree_merge_blocks, remove_bb, disband_implicit_edges): Likewise.
256         (bsi_move_before, bsi_move_after): Likewise.
257         (bsi_move_to_bb_end, try_redirect_by_replacing_jump): Likewise
258         (tree_redirect_edge_and_branch, tree_split_block): Likewise.
259
260 2006-01-06  Andrew Pinski  <pinskia@physics.uc.edu>
261
262         PR tree-opt/25528
263         * tree-ssa-alias.c (find_used_portions): Handle REALPART_EXPR
264         and IMAGPART_EXPR.
265         * tree-flow-inline.h (var_can_have_subvars): Handle complex types
266         on non gimple variables.  Also add checks at the top for decls and
267         mtags.
268         * tree-ssa-structalias.c (push_fields_onto_fieldstack): Handle
269         complex types.
270         * tree-ssa-operands.c (parse_ssa_operands): Handle REALPART_EXPR
271         and IMAGPART_EXPR for creating MUST_DEFs.
272         (get_expr_operands): Handle SSA_NAME, STRUCT_FIELD_TAG, TYPE_MEMORY_TAG,
273         and NAME_MEMORY_TAG separately from the DECLs.
274
275 2006-01-06  Richard Guenther  <rguenther@suse.de>
276
277         * tree-dfa.c (mark_new_vars_to_rename): Create stmt
278         annotation, if necessary.
279         * tree-ssa-pre.c (create_expression_by_pieces): Remove
280         redundant calls to update_stmt.
281         * tree-ssa-forwprop.c (tidy_after_forward_propagate_addr):
282         Likewise.
283
284 2006-01-05  Richard Henderson  <rth@redhat.com>
285
286         * c-parser.c (c_parser_objc_methodprotolist): Handle CPP_PRAGMA.
287
288 2006-01-05  Carlos O'Donell  <carlos@codesourcery.com>
289
290         * c-typeck.c: Update copyright date.
291
292 2006-01-05  Carlos O'Donell  <carlos@codesourcery.com>
293
294         * c-typeck.c (build_c_cast): Always warn when casting
295         from a pointer to an integer of different size, even if
296         the node was constant.
297
298 2006-01-05  Richard Guenther  <rguenther@suse.de>
299
300         PR tree-optimization/22555
301         * tree-ssa-alias.c (create_overlap_variables_for): Do not give up,
302         if one structure field is an array.
303         * tree-ssa-operands.c (get_expr_operands): Continue scanning
304         operands even if we found a subvar, but ignore VOPs in this
305         case.
306         * tree-ssa-loop-ivopts.c (rewrite_use): Mark new vars in stmt
307         for renaming.
308         * tree-ssa-loop.c (pass_iv_optimize): Schedule TODO_update_ssa.
309
310 2006-01-05  Richard Earnshaw  <rearnsha@arm.com>
311
312         PR middle-end/24998
313         * arm/t-netbsd (LIB2FUNCS_EXTRA): Define.
314
315 2006-01-05  Richard Guenther  <rguenther@suse.de>
316             Diego Novillo  <dnovillo@redhat.com>
317
318         * tree-pass.h (TODO_remove_unused_locals): Define.
319         * gimple-low.c (expand_var_p, remove_useless_vars,
320         pass_remove_useless_vars): Remove.  Update all users.
321         * tree-ssa-live.c (mark_all_vars_used_1): Handle SSA names.
322         (remove_unused_locals): New function.
323         * tree-flow.h (remove_unused_locals): Declare.
324         * passes.c (execute_todo): Call remove_unused_locals if
325         TODO_remove_unused_locals is set.
326         * tree-into-ssa.c (pass_build_ssa): Add TODO_remove_unused_locals.
327         * tree-ssa-dce.c (pass_dce): Likewise.
328         * tree-outof-ssa.c (pass_del_ssa): Likewise.
329
330 2006-01-05  Richard Guenther  <rguenther@suse.de>
331
332         * tree-flow.h (struct fieldoff): Decompose field to
333         type, size and decl.
334         * tree-ssa-alias.c (create_sft): Take type as parameter.
335         (create_overlap_variables_for): Store type, size and decl
336         in the fieldoff structure.
337         * tree-ssa-structalias.c (fieldoff_compare): Adjust users
338         of struct fieldoff.
339         (push_fields_onto_fieldstack): Likewise.
340         (create_variable_info_for): Likewise.  Use offset for the
341         SFT name if the decl is not available.
342
343 2006-01-04  Paul Brook  <paul@codesourcery.com>
344
345         * config/m68k/m68k.c (m68k_output_mi_thunk): Use jmp, not jsr.
346
347 2006-01-04  Daniel Berlin  <dberlin@dberlin.org>
348
349         * lambda-code.c (can_put_in_inner_loop): Relax
350         restrictions.
351         (can_put_after_inner_loop): New function.
352         (can_convert_to_perfect_nest): Use can_put_after_inner_loop as well.
353         (perfect_nestify): Change to make copies and modify uses.
354
355 2006-01-04  Richard Henderson  <rth@redhat.com>
356
357         Merge from gomp branch:
358         * c-lex.c (c_lex_with_flags) <CPP_PRAGMA>: Smuggle pragma id
359         via integer constant.
360         (pragma_lex): Remove.
361         * c-pch.c (c_common_pch_pragma): Accept the name as an argument,
362         rather than parsing it.
363         * c-pragma.c (handle_pragma_weak, handle_pragma_redefine_extname,
364         handle_pragma_extern_prefix): Add %< %> quotes.
365         (registered_pragmas): New.
366         (c_register_pragma_1): New.
367         (c_register_pragma): Use it.
368         (c_register_pragma_with_expansion): Likewise.
369         (c_invoke_pragma_handler): New.
370         (init_pragma): Use cpp_register_deferred_pragma directly for
371         pch_preprocess.
372         * c-pragma.h (enum pragma_kind): New.
373         (pragma_handler): New.
374         (c_invoke_pragma_handler): Declare.
375         * c-common.c (c_parse_error): Pretty print CPP_PRAGMA and
376         CPP_PRAGMA_EOL.
377         * c-common.h (c_common_pch_pragma): Update decl.
378         * Makefile.in (c-parser.o): Update dependencies.
379         (GTFILES): Add c-pragma.h.
380         * c-parser.c (struct c_token): Add pragma_kind.
381         (struct c_parser): Add in_pragma.
382         (c_lex_one_token): Always initialize keyword and pragma_kind.
383         Extract data for CPP_PRAGMA.
384         (c_parser_peek_2nd_token): Deny CPP_PRAGMA_EOL.
385         (c_parser_consume_token): Don't allow CPP_PRAGMA unless errors.
386         Don't allow CPP_PRAGMA_EOL if in_pragma.
387         (c_parser_consume_pragma): New.
388         (c_parser_skip_until_found): Stop on CPP_PRAGMA_EOL.
389         (c_parser_skip_to_end_of_parameter): Likewise.
390         (c_parser_skip_to_end_of_block_or_statement): Likewise.
391         (c_parser_skip_to_pragma_eol): New.
392         (c_parser_external_declaration): Handle CPP_PRAGMA.
393         (c_parser_compound_statement_nostart): Likewise.
394         (c_parser_statement_after_labels): Likewise.
395         (c_parser_pragma): New.
396         (pragma_lex): Likewise.
397         (c_parser_pragma_pch_preprocess): New.
398         (c_parser_new): Merge into ...
399         (c_parse_file): ... here.  Call c_parser_pragma_pch_preprocess.
400
401 2006-01-04  Jeff Law  <law@redhat.com>
402
403         PR ada/24994
404         * tree-cfg.c (bsi_replace): Remove the original statement
405         from the EH throw statement table.
406
407 2006-01-04  Jakub Jelinek  <jakub@redhat.com>
408
409         * config/i386/pmm_malloc.h (posix_memalign): If __cplusplus,
410         make the prototype extern "C" and add throw ().
411
412         PR target/25554
413         * config/i386/i386.md (testqi_ext_3): Ensure len is positive
414         and pos non-negative and pos + len <= 32.
415         (testqi_ext_3_rex64): Ensure len is positive and pos non-negative,
416         drop pos + len < HOST_BITS_PER_WIDE_INT test.
417         (testqi_ext_3* splitter): Handle pos + len == HOST_BITS_PER_WIDE_INT.
418
419         PR c/25559
420         * c-common.c (handle_vector_size_attribute): Reject zero vector size
421         as well as sizes not multiple of component size.
422
423         PR debug/25562
424         * function.c (instantiate_expr): New function.
425         (instantiate_decls_1, instantiate_decls): If DECL_HAS_VALUE_EXPR_P,
426         walk its DECL_VALUE_EXPR with instantiate_expr.
427
428         * dwarf2out.c (loc_descriptor_from_tree_1): Don't add
429         DW_OP_deref{,_size} if address isn't going to be added.
430
431 2006-01-04  Ben Elliston  <bje@au.ibm.com>
432
433         * config/fp-bit.h: Use top-of-file comment from libgcc2.c.
434         * config/fp-bit.c: Likewise.
435
436 2006-01-03  Daniel Berlin  <dberlin@dberlin.org>
437
438         * dominance.c: Add comment about why we use DFS numbering
439         of dominance tree.
440
441 2006-01-03  Jakub Jelinek  <jakub@redhat.com>
442             Richard Henderson  <rth@redhat.com>
443
444         Merge from gomp-branch:
445         * varasm.c (assemble_variable): Handle thread-local COMMON data.
446         * defaults.h (ASM_OUTPUT_TLS_COMMON): Define.
447
448 2006-01-03  Paolo Bonzini  <bonzini@gnu.org>
449
450         PR rtl-optimization/25578
451         * combine.c (combine_simplify_rtx, force_to_mode): Don't
452         pass a parameter to simplify_shift_const if changing ASHIFTRT
453         to LSHIFTRT.
454
455 2006-01-03  Adrian Straetling  <straetling@de.ibm.com>
456
457         * gcc/builtins.c (get_builtin_sync_mem): New function.
458         (expand_builtin_sync_operation, expand_builtin_compare_and_swap,
459         expand_builtin_lock_test_and_set, expand_builtin_lock_release):
460         Call get_builtin_sync_mem to generate mem rtx.
461
462 2006-01-03  Richard Guenther  <rguenther@suse.de>
463
464         PR c/25183
465         * stmt.c (add_case_node): Make sure to clear overflow flags
466         from ranges.
467
468 2006-01-03  Jakub Jelinek  <jakub@redhat.com>
469
470         Merge from gomp-branch.
471         * config/sparc/sync.md: New file.
472         * config/sparc/sparc.md (UNSPECV_MEMBAR, UNSPECV_CAS, UNSPECV_SWAP,
473         UNSPECV_LDSTUB): New constants.
474         * config/sparc/sparc.c (sparc_expand_compare_and_swap_12): New function.
475         * config/sparc/predicates.md (memory_reg_operand): New predicate.
476         * config/sparc/sparc-protos.h (sparc_expand_compare_and_swap_12): New
477         prototype.
478
479 2006-01-03  Roger Sayle  <roger@eyesopen.com>
480
481         * combine.c (reg_subword_p): New predicate to test whether the
482         destination of a set refers to a subword/piece of a register.
483         (try_combine): Generalize the code to merge the setting of a
484         pseudo to a constant followed by a set of a subword of that
485         register to a constant.
486
487 2006-01-03  Kazu Hirata  <kazu@codesourcery.com>
488
489         * basic-block.h (control_flow_graph): Change the type of
490         x_label_to_block_map to VEC(basic_block,gc) *.
491         * tree-cfg.c (init_empty_tree_cfg, label_to_block_fn,
492         set_bb_for_stmt): Adjust the uses of x_label_to_block_map.
493
494         * tree-ssa-propagate.c (cfg_blocks): Change the type to
495         VEC(basic_block,heap) *.
496         (cfg_blocks_add, cfg_blocks_get, ssa_prop_init,
497         ssa_prop_fini): Adjust the uses of cfg_blocks.
498
499 2006-01-03  Steven Bosscher  <stevenb.gcc@gmail.com>
500
501         * fold-const.c (operand_equal_p): Accept a NULL operand 0 for
502         COMPONENT_REFs.
503         * emit-rtl.c (mem_attrs_htab_eq): Use iterative_hash_expr for
504         hashing trees instead of a pointer hash.
505         (mem_attrs_htab_eq): Do a deep compare instead of a pointer
506         compare for MEM_EXPR.
507
508         PR rtl-optimization/25130
509         * cse.c (exp_equiv_p): Compare MEM_ATTRS instead of MEM_ALIAS_SET
510         when comparing MEMs for GCSE
511
512 2006-01-03  Ben Elliston  <bje@au.ibm.com>
513
514         * targhooks.h (default_decimal_float_supported_p): Declare.
515         * targhooks.c (default_decimal_float_supported_p): Define.
516         * target-def.h (TARGET_DECIMAL_FLOAT_SUPPORTED_P): Redefine to
517         `default_decimal_float_supported_p'.
518         * doc/tm.texi (TARGET_DECIMAL_FLOAT_SUPPORTED_P): Update.
519
520 2006-01-02  Adam Nemet  <anemet@caviumnetworks.com>
521
522         * combine.c (apply_distributive_law <SUBREG>): Check
523         TRULY_NOOP_TRUNCATION.
524
525 2006-01-02  Geoffrey Keating  <geoffk@apple.com>
526
527         * dwarf2out.c (have_switched_text_section): Delete.
528         (have_multiple_function_sections): New.
529         (have_location_lists): Make 'bool'.
530         (add_AT_loc_list): Use 'true' not '1'.
531         (dwarf2out_switch_text_section): Set have_multiple_function_sections.
532         (output_loc_list): Use have_multiple_function_sections.
533         (output_ranges): Likewise.
534         (dwarf2out_begin_function): Set have_multiple_function_sections if
535         necessary.
536         (dwarf2out_source_line): Don't fake separate_line_info_table_in_use.
537         Check function_section rather than DECL_SECTION_NAME.
538         (dwarf2out_finish): Use have_multiple_function_sections.
539         Don't clear have_location_lists.
540
541 2006-01-02  Eric Botcazou  <ebotcazou@adacore.com>
542             Jan Hubicka  <jh@suse.cz>
543
544         * cfglayout.c (fixup_reorder_chain): Remove kludge for the
545         case of conditional jump jumping to the next instruction.
546         * cfgrtl.c (force_nonfallthru_and_redirect): Accept all
547         cases of conditional jump jumping to the next instruction.
548
549 2006-01-02  Jan Hubicka  <jh@suse.cz>
550
551         * i386.c (*_cost): Add COSTS_N_INSNS.
552         (ix86_rtx_costs): Do not use COSTS_N_INSNS.
553
554 2006-01-02  Paolo Bonzini  <bonzini@gnu.org>
555
556         PR target/25259
557         * Makefile.in (DECNUMINC): Include libdecnumber's build directory.
558
559 2006-01-02  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
560
561         * config/arm/arm.c (all_fpus): Fix comment typo.
562         * config/darwin.c: Likewise.
563         * config/frv/frv.h (FRV_STRUCT_VALUE_REGNUM): Likewise.
564         * config/h8300/h8300.md (extendqisi2_h8300hs): Likewise.
565         * config/m68hc11/m68hc11.c (m68hc11_reload_operands): Likewise.
566
567 2006-01-01  David Edelsohn  <edelsohn@gnu.org>
568
569         * config/rs6000/rs6000.c (rs6000_expand_compare_and_swapqhi): New.
570         (rs6000_split_compare_and_swapqhi): New.
571         * config/rs6000/sync.md (sync_compare_and_swap{hi,qi}): New.
572         (sync_compare_and_swapqhi_internal): New.
573         * config/rs6000/rs6000-protos.h: Declare.