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2005-07-15profile.c (rest_of_handle_branch_prob): Fix handling of estimation after RTL ↵Jan Hubicka1-0/+5
profiling. * profile.c (rest_of_handle_branch_prob): Fix handling of estimation after RTL profiling. From-SVN: r102069
2005-07-15[multiple changes]Andrew Pinski1-0/+6
2005-07-15 Andrew Pinski <pinskia@physics.uc.edu> PR middle-end/22398 * gcc.c-torture/compile/pr22398.c: New test. 2005-07-11 Andrew Pinski <pinskia@physics.uc.edu> PR middle-end/22398 * fold-const.c (build_range_check): Convert high/low to etype if we are only comparing against exp. From-SVN: r102067
2005-07-15re PR tree-optimization/22376 (PTA is slow on a silly unrealistic test case)Daniel Berlin1-0/+8
2005-07-13 Daniel Berlin <dberlin@dberlin.org> Fix PR tree-optimization/22376 * tree-ssa-structalias.c (build_constraint_graph): We really meant special var here. (need_to_solve): New function. (compute_points_to_sets): Use it. From-SVN: r102056
2005-07-15cfg.c (update_bb_profile_for_threading): More diagnostic.Jan Hubicka1-0/+5
* cfg.c (update_bb_profile_for_threading): More diagnostic. * tree-ssa-threadupdate.c (redirect_edges): Update profile of dup_block. From-SVN: r102053
2005-07-15c-common.c (handle_flatten_attribute): New function.Richard Guenther1-0/+11
2005-07-15 Richard Guenther <rguenther@suse.de> * c-common.c (handle_flatten_attribute): New function. Add flatten function attribute. * doc/extend.texi: Document flatten function attribute. * Makefile.in (ipa-inline.o): Depend on hashtab.h. * ipa-inline.c (cgraph_find_cycles, cgraph_flatten_node): New functions. (cgraph_decide_inlining): Handle functions with flatten attribute. * gcc.dg/tree-ssa/flatten-1.c: New testcase. * gcc.dg/tree-ssa/flatten-2.c: Likewise. From-SVN: r102051
2005-07-14rs6000.md (UNSPEC_SYNC, [...]): New.David Edelsohn1-0/+44
* config/rs6000/rs6000.md (UNSPEC_SYNC, UNSPEC_LWSYNC, UNSPEC_ISYNC, UNSPEC_SYNC_OP, UNSPEC_ATOMIC, UNSPEC_CMPXCHG, UNSPEC_XCHG, UNSPEC_AND): New. (UNSPECV_ATOMIC, UNSPECV_SYNC, UNSPECV_SYNC_OP, UNSPECV_CMPXCHG, UNSPECV_LWSYNC, UNSPECV_ISYNC): Delete. * config/rs6000/sync.md (FETCHOP): New code macro. (fetchop_name, fetchop_pred, fetchopsi_constr, fetchopdi_constr): New code attrs. (memory_barrier, sync_internal): Use unspec instead of unspec_volatile. (sync_compare_and_swap<mode>): Same. (sync_lock_test_and_set<mode>): Same. (sync_<fetchop><mode>, sync_nand<mode>): Only use rs6000_emit_sync for QImode and HImode, and not PPC405. (sync_old_<fetchop><mode>, sync_old_nand<mode>): Same. (sync_new_<fetchop><mode>, sync_new_nand<mode>): Same. (sync_<fetchop>{si,di}_internal): New. (sync_nand{si,di}_internal): New. (sync_old_<fetchop>{si,di}_internal): New. (sync_old_nand{si,di}_internal): New (sync_new_<fetchop>{si,di}_internal): New. (sync_new_nand{si,di}_internal): New. (atomic_and{si,di}): New. (sync_new_nand{si,di}_internal): New. (atomic_and{si,di}): New. (sync_add<mode>_internal): Delete. (sync_addshort_internal): Use unspec instead of unspec_volatile. (sync_sub<mode>_internal): Delte. (sync_subshort_internal): New. (sync_andsi_internal): Use unspec instead of unspec_volatile. (sync_anddi_internal): Delete. (sync_boolsi_internal): Use unspec instead of unspec_volatile. (sync_booldi_internal): Delete. (sync_boolc<mode>_internal): Delete. (sync_boolcshort_internal): Use unspec instead of unspec_volatile. (sync_boolc<mode>_internal2): Delete. (sync_boolcc<mode>_internal): Delete. (isync, lwsync): Use unspec instead of unspec_volatile. * config/rs6000/rs6000.c (rs6000_emit_sync): Implement MINUS. Revert UNSPEC_VOLATILE. (rs6000_split_atomic_op): New. * config/rs6000/rs6000-protos.h (rs6000_split_atomic_op): Declare. From-SVN: r102049
2005-07-14mips.c (mips_canonicalize_comparison): Cast argument of trunc_int_for_mode ↵Eric Christopher1-0/+5
to unsigned HOST_WIDE_INT. 2005-07-14 Eric Christopher <echristo@redhat.com> * config/mips/mips.c (mips_canonicalize_comparison): Cast argument of trunc_int_for_mode to unsigned HOST_WIDE_INT. From-SVN: r102041
2005-07-14t-tpf (SHLIB_MAPFILES): Remove.Eric Christopher1-0/+4
2005-07-14 Eric Christopher <echristo@redhat.com> * config/s390/t-tpf (SHLIB_MAPFILES): Remove. From-SVN: r102040
2005-07-14re PR tree-optimization/22230 (value range propagation error)Steven Bosscher1-0/+6
PR tree-optimization/22230 gcc/ * tree-vrp.c (extract_range_from_binary_expr): Fix logics thinko in the computation of the four cross productions for "range op range". testsuite/ * gcc.dg/tree-ssa/pr22230.c: New test. From-SVN: r102038
2005-07-14re PR target/20126 (Inlined memcmp makes one argument null on entry)Alexandre Oliva1-0/+7
2005-07-14 Alexandre Oliva <aoliva@redhat.com> Ulrich Weigand <uweigand@de.ibm.com> PR target/20126 * loop.c (loop_givs_rescan): Do not ICE if unable to reduce an IV in some insn. Co-Authored-By: Ulrich Weigand <uweigand@de.ibm.com> From-SVN: r102033
2005-07-14* config/s390/s390.h (TARGET_TPF_PROFILING): Add default definition.Ulrich Weigand1-0/+4
From-SVN: r102032
2005-07-14* config/ia64/ia64.c (ia64_output_dwarf_dtprel): Support ILP32 mode.Steve Ellcey1-0/+4
From-SVN: r102031
2005-07-14re PR middle-end/22347 (Return value register not correctly computed for ↵Richard Guenther1-0/+21
indirect function call) 2005-07-14 Richard Guenther <rguenther@suse.de> PR middle-end/22347 * config/i386/i386-protos.h (ix86_function_value): Change prototype to match new target hook. * config/i386/i386.c (ix86_value_regno): Change prototype to take extra type argument. (TARGET_FUNCTION_VALUE): Define. (ix86_function_ok_for_sibcall): Pass extra argument to ix86_value_regno, check return slot rtx for exact match. (ix86_function_value): Take extra parameter. Dispatch to ix86_value_regno with fndecl/fntype as provided. (ix86_value_regno): Handle extra type argument. * config/i386/i386.h (FUNCTION_VALUE): No longer define. * testsuite/gcc.target/i386/sseregparm-3.c: New testcase. * testsuite/gcc.target/i386/sseregparm-4.c: New testcase. * testsuite/gcc.target/i386/sseregparm-5.c: New testcase. * testsuite/gcc.target/i386/sseregparm-6.c: New testcase. * testsuite/gcc.target/i386/sseregparm-7.c: New testcase. From-SVN: r102014
2005-07-14Makefile.in (explow.o, [...]): Depend on target.h.Richard Guenther1-0/+21
2005-07-14 Richard Guenther <rguenther@suse.de> * Makefile.in (explow.o, reg-stack.o): Depend on target.h. * calls.c (expand_call): Pass fntype to hard_function_value. (emit_library_call_value_1): Likewise. * explow.c: Include target.h. (hard_function_value): Take extra argument, the fntype. Use new target hook for function_value. * expr.h (hard_function_value): Change prototype. * function.c (aggregate_value_p): Pass 0 as fntype to hard_function_value. (assign_parms): Use new target hook for function_value. Pass 0 as fntype to hard_function_value. (expand_function_end): Likewise. * reg-stack.c: Include target.h. (stack_result): Use new target hook for function_value. * target-def.h: New target hook function_value. * target.h: Likewise. * targhooks.c (default_function_value): New function. * targhooks.h (default_function_value): Declare. From-SVN: r102013
2005-07-13* config/mips/mips.h (CLZ_DEFINED_VALUE_AT_ZERO): Define.Ian Lance Taylor1-0/+4
From-SVN: r101997
2005-07-13tree-dfa.c (dump_variable): Use default_def function.Jan Hubicka1-0/+10
* tree-dfa.c (dump_variable): Use default_def function. * tree-ssa-alias.c (dump_points_to_info): Likewise. * tree-ssa.c (verify_use): Likewise. * tree-ssanames.c (release_ssa_name): Likewise. * tree-tailcall.c (eliminate_tail_call): Likewise. (tree_optimize_tail_calls_1): Likewise. * tree-vrp.c (get_value_range): Likewise. From-SVN: r101994
2005-07-14gcc.c (main): Compare language[0] with '*' when iterating over the infiles.Ben Elliston1-0/+5
* gcc.c (main): Compare language[0] with '*' when iterating over the infiles. From-SVN: r101993
2005-07-13s390.c: (s390_cc_modes_compatible): Move before "s390_emit_compare".Adrian Straetling1-0/+13
2005-07-13 Adrian Strae�tling <straetling@de.ibm.com> * config/s390/s390.c: (s390_cc_modes_compatible): Move before "s390_emit_compare". Add handling of CCZ1mode. (s390_canonicalize_comparison): Simplify cascaded EQ, NE. (390_emit_compare): Use "s390_cc_modes_compatible" for mode checking. (s390_branch_condition_mask): Add CCZ1mode handling. * config/s390/s390.md: ("seq", "*seq"): New pattern. ("sync_compare_and_swap_cc<mode>", "*sync_compare_and_swap_cc<mode>"): Use CCZ1mode instead of CCZmode. * config/s390/s390-modes.def: Add CCZ1mode. Comment new mode. From-SVN: r101990
2005-07-13s390.md: ("cmpstrsi", "*cmpstr<mode>"): New pattern.Adrian Straetling1-0/+6
2006-07-13 Adrian Strae�tling <straetling@de.ibm.com> * config/s390/s390.md: ("cmpstrsi", "*cmpstr<mode>"): New pattern. ("strlen<mode>", "*strlen<mode>"): Use hard reg 0 in SImode. From-SVN: r101989
2005-07-13mips.c (mips_canonicalize_comparison): New.Eric Christopher1-0/+5
2005-07-13 Eric Christopher <echristo@redhat.com> * config/mips/mips.c (mips_canonicalize_comparison): New. (mips_emit_int_relational): Use. From-SVN: r101983
2005-07-13configure.in: Add toplevel noconfigdir support for tpf.Eric Christopher1-0/+24
2005-07-13 Eric Christopher <echristo@redhat.com> * configure.in: Add toplevel noconfigdir support for tpf. * configure: Regenerate. 2005-07-13 Eric Christopher <echristo@redhat.com> * config.gcc (s390x-ibm-tpf*): Add extra_options. Remove static extra parts. * config/s390/s390.md: Include tpf.md. Move tpf specific patterns... * config/s390/tpf.md: To here. * config/s390/s390.opt: Move tpf specific options... * config/s390/tpf.opt: to here. Add mmain option. * config/s390/tpf-unwind.h: Remove unnecessary defines. * config/s390/tpf.h: Rewrite. From-SVN: r101982
2005-07-13tm.texi: Remove @xref{Cross-profiling}.H.J. Lu1-0/+4
2005-07-13 H.J. Lu <hongjiu.lu@intel.com> * doc/tm.texi: Remove @xref{Cross-profiling}. From-SVN: r101979
2005-07-13fold-const.c (fold_binary): When comparing two simple ADDR_EXPR expressions...Jeff Law1-0/+6
* fold-const.c (fold_binary): When comparing two simple ADDR_EXPR expressions, test their _DECL operands for pointer equality rather than using operand_equal_p. * gcc.dg/tree-ssa/pr22321.c: New test. From-SVN: r101974
2005-07-13linux.h (TARGET_HAS_F_SETLKW): Renamed to ...H.J. Lu1-0/+25
2005-07-13 H.J. Lu <hongjiu.lu@intel.com> * config/alpha/linux.h (TARGET_HAS_F_SETLKW): Renamed to ... (TARGET_POSIX_IO): This. * config/darwin.h: Likewise. * config/freebsd.h: Likewise. * config/linux.h: Likewise. * config/lynx.h: Likewise. * config/netbsd.h: Likewise. * config/rs6000/linux64.h: Likewise. * config/rs6000/linux.h: Likewise. * config/s390/tpf.h: Likewise. * config/sh/embed-elf.h: Likewise. * config/sparc/linux64.h: Likewise. * config/sparc/linux.h: Likewise. * config/svr4.h: Likewise. * gcov-io.h: Likewise. * doc/tm.texi: Updated. * libgcov.c (create_file_directory): Defined only if TARGET_POSIX_IO is defined. (gcov_exit): Call create_file_directory only if TARGET_POSIX_IO is defined. From-SVN: r101973
2005-07-13* tree-ssa-operands.c (get_expr_operands): Fix typo in previous patch.Jan Hubicka1-0/+4
From-SVN: r101972
2005-07-13tree-ssa-dom.c (lookup_avail_expr): Do not pass member in freed structure as ↵David Edelsohn1-0/+5
argument. * tree-ssa-dom.c (lookup_avail_expr): Do not pass member in freed structure as argument. From-SVN: r101971
2005-07-13re PR tree-optimization/21921 (internal compiler error: in tsi_link_before, ↵Paolo Bonzini1-0/+6
at tree-iterator.c:113) ChangeLog: 2005-07-13 Paolo Bonzini <bonzini@gnu.org> PR tree-optimization/21921 * tree-iterator.c (tsi_link_before): Support the case when tsi_end_p (tsi) == true. testsuite/ChangeLog: 2005-07-13 Paolo Bonzini <bonzini@gnu.org> PR tree-optimization/21921 * gcc.dg/tree-ssa/pr21921.c: New. From-SVN: r101970
2005-07-13re PR tree-optimization/22442 (scev cprop causes wrong code)Zdenek Dvorak1-0/+6
PR tree-optimization/22442 * tree-chrec.c (chrec_fold_multiply_poly_poly): Associate chrecs correctly. From-SVN: r101962
2005-07-13re PR rtl-optimization/20376 (The missed-optimization of general induction ↵Zdenek Dvorak1-0/+8
variables in the new rtl-level loop optimizer cause performance degradation.) PR rtl-optimization/20376 * toplev.c (process_options): Enable -fweb and -frename-registers when unrolling. * doc/invoke.texi: Update the information about when -fweb and -frename-registers are enabled. From-SVN: r101961
2005-07-12re PR middle-end/21840 (ICE while building Linux kernel (seg fault), missing ↵Andrew Pinski1-0/+6
cast) 2005-07-12 Andrew Pinski <pinskia@physics.uc.edu> PR tree-opt/21840 * tree-ssa-pre.c (eliminate): Convert the sprime to the correct type if *rhs_p is not a SSA_NAME. 2005-07-12 Andrew Pinski <pinskia@physics.uc.edu> PR tree-opt/21840 * gcc.c-torture/compile/pr21840.c: New test. From-SVN: r101960
2005-07-13re PR tree-optimization/22422 (ICE in first_vi_for_offset, at ↵Daniel Berlin1-0/+17
tree-ssa-structalias.c:2843) 2005-07-12 Daniel Berlin <dberlin@dberlin.org> Fix PR tree-optimization/22422 * tree-ssa-structalias.c (struct variable_info): Add flag for special vars. (get_varinfo): Now a static function. (new_varinfo): init has_union and is_special_var to false. (solution_set_add): Check has_union. (do_da_constraint): Move temporary variable so it gets reset properly. Also check for special variable. (do_ds_constraint): Ditto. (do_sd_constraint): Ditto. (do_structure_copy): Check for special variable. (find_func_aliases): Ditto. (init_base_vars): Set special vars properly. From-SVN: r101959
2005-07-12cfgexpand.c (expand_one_stack_var): Do not expand variables when we do ↵Jan Hubicka1-0/+3
unit-at-a-time. * cfgexpand.c (expand_one_stack_var): Do not expand variables when we do unit-at-a-time. From-SVN: r101950
2005-07-12tree-ssa-operands.c (parse_ssa_operands): Fix formatting.Jan Hubicka1-0/+9
* tree-ssa-operands.c (parse_ssa_operands): Fix formatting. (get_expr_operands): Fix thinko wrt flags and subvars. From-SVN: r101947
2005-07-12rs6000.c (rs6000_rtx_cost): Move FLOAT_EXTEND.Dale Johannesen1-0/+4
2005-07-12 Dale Johannesen <dalej@apple.com> * config/rs6000.c (rs6000_rtx_cost): Move FLOAT_EXTEND. From-SVN: r101946
2005-07-12re PR bootstrap/21704 (failure during building 64-bit native compiler by ↵Andrew Pinski1-0/+5
crosscompiler.) 2005-07-12 Andrew Pinski <pinskia@physics.uc.edu> PR bootstrap/21704 * host-linux.h: Include limits.h. From-SVN: r101942
2005-07-12expr.c (compress_float_constant): Add cost check.Dale Johannesen1-0/+14
2005-07-12 Dale Johannesen <dalej@apple.com> * expr.c (compress_float_constant): Add cost check. * config/rs6000.c (rs6000_rtx_cost): Adjust FLOAT_EXTEND cost. From-SVN: r101938
2005-07-12gcc.c (struct infile): Update comment for language.Eric Christopher1-0/+5
2005-07-12 Eric Christopher <echristo@redhat.com> * gcc.c (struct infile): Update comment for language. (main): Rewrite input file resetting code. From-SVN: r101934
2005-07-12re PR tree-optimization/22335 (DOM creates mis-matched types)Andrew Pinski1-0/+8
2005-07-12 Andrew Pinski <pinskia@physics.uc.edu> PR tree-opt/22335 * tree-ssa-dom.c (eliminate_redundant_computations): Reject the prop if requiring a cast in a non RHS of modify_expr. Add a cast when required. (lookup_avail_expr): Use constant_boolean_node instead of boolean_false_node/boolean_true_node. From-SVN: r101929
2005-07-12tree-cfg.c (dump_cfg_stats): Add a new fmt_str_2 format string and use it ↵Ben Elliston1-0/+5
when printing num_edges. * tree-cfg.c (dump_cfg_stats): Add a new fmt_str_2 format string and use it when printing num_edges. From-SVN: r101923
2005-07-12extend.texi (Blackfin Built-in Functions): New section.Bernd Schmidt1-0/+6
* doc/extend.texi (Blackfin Built-in Functions): New section. * doc/invoke.texi (mcsync-anomaly, mno-csync-anomaly): Fix the @opindex. From-SVN: r101919
2005-07-12builtins.c: (expand_builtin_memcmp, expand_builtin_strncmp): ↵Adrian Straetling1-0/+15
s/cmpstrsi/cmpstrnsi 2005-07-12 Adrian Straetling <straetling@de.ibm.com> * builtins.c: (expand_builtin_memcmp, expand_builtin_strncmp): s/cmpstrsi/cmpstrnsi (expand_builtin_strcmp): Rewrite to support both 'cmpstrsi' and 'cmpstrnsi'. * optabs.c: (prepare_cmp_insn): Add availability of 'cmpstrn'. (init_optabs): Initialize cmpstrn_optab. * optabs.h: (enum insn_code cmpstrn_optab): Declare. * genopinit.c: (optabs[]): Add 'cmpstrn' to initialisation. * expr.c: (enum insn_code cmpstrn_optab): Declare. * config/i386/i386.md: s/cmpstr/cmpstrn * config/c4x/c4x.md: s/cmpstr/cmpstrn * doc/md.texi: Update documentation. From-SVN: r101916
2005-07-11alpha.c (alpha_gimplify_va_arg_1): Use build_va_arg_indirect_ref.Richard Henderson1-0/+14
* config/alpha/alpha.c (alpha_gimplify_va_arg_1): Use build_va_arg_indirect_ref. (alpha_gimplify_va_arg): Likewise. * config/c4x/c4x.c (c4x_gimplify_va_arg_expr): Likewise. * config/i860/i860.c (i860_gimplify_va_arg_expr): Likewise. * config/mips/mips.c (mips_gimplify_va_arg_expr): Likewise. * config/pa/pa.c (hppa_gimplify_va_arg_expr): Likewise. * config/sh/sh.c (sh_gimplify_va_arg_expr): Likewise. * config/stormy16/stormy16.c (xstormy16_expand_builtin_va_arg): Likewise. * config/xtensa/xtensa.c (xtensa_gimplify_va_arg_expr): Likewise. From-SVN: r101909
2005-07-11tree-flow.h (remove_empty_loops, [...]): Declare.Zdenek Dvorak1-0/+10
* tree-flow.h (remove_empty_loops, single_dom_exit): Declare. * passes.c (init_optimization_passes): Add pass_empty_loop. * tree-pass.h (pass_empty_loop): Declare. * tree-ssa-loop-ivcanon.c (empty_loop_p, remove_empty_loop, try_remove_empty_loop, remove_empty_loops): New functions. * tree-ssa-loop-ivopts.c (single_dom_exit): Export. * tree-ssa-loop.c (tree_ssa_empty_loop, pass_empty_loop): New. * gcc.dg/tree-ssa/loop-10.c: New test. From-SVN: r101901
2005-07-12re PR target/16719 ([ColdFire] Illegal move of byte itno address register ↵Peter Barada1-0/+10
causes compiler to ICE) PR middle-end/16719 PR middle-end/18421 * config/m68k/m68k.h (HARD_REGNO_MODE_OK): Disallow bytes in address registers. * config/m68k/m68k.c (hard_regno_mode_ok): Likewise. * config/m68k/m68k.md: Replace 's' with 'i' in 4th alternative of addsi3_5200. From-SVN: r101900
2005-07-11* config/mips/mips.md (ffs<mode>2): Remove.Ian Lance Taylor1-0/+4
From-SVN: r101896
2005-07-11tree-ssa.texi (Cleanups): Improve description of TRY_FINALLY_EXPR.Ian Lance Taylor1-0/+6
* doc/tree-ssa.texi (Cleanups): Improve description of TRY_FINALLY_EXPR. (GIMPLE Exception Handling): Clarify TRY_CATCH_EXPR cases. From-SVN: r101895
2005-07-11re PR tree-optimization/22404 (ICE in first_vi_for_offset)Daniel Berlin1-0/+12
2005-07-11 Daniel Berlin <dberlin@dberlin.org> * print-tree.c (print_node): Use DECL_ARGUMENT_FLD. * tree.h (DECL_ARGUMENT_FLD): New macro. 2005-07-11 Daniel Berlin <dberlin@dberlin.org> Fix PR tree-optimization/22404 * tree-ssa-structalias.c (create_variable_info_for): Use correct offset. From-SVN: r101894
2005-07-11bfin.md (cmpsi, [...]): Use reg_or_const_int_operand for second comparison ↵Bernd Schmidt1-0/+5
operand. * config/bfin/bfin.md (cmpsi, compare_eq, compare_ne, compare_lt, compare_le, compare_leu, compare_ltu): Use reg_or_const_int_operand for second comparison operand. * config/bfin/predicates.md (reg_or_const_int_operand): New. From-SVN: r101881
2005-07-11bfin.md (define_attr "type"): Add "sync".Bernd Schmidt1-0/+14
* config/bfin/bfin.md (define_attr "type"): Add "sync". (define_insn_reservation "alu"): Likewise. (csync, ssync): Now of type sync. * config/bfin/bfin.h (TARGET_DEFAULT): Defaults to -mcsync-anomaly -mspecld-anomaly. * config/bfin/bfin.opt (mcsync): Remove. (mcsync-anomaly, mspecld-anomaly): Add. * config/bfin/bfin.c: Include "insn-codes.h". (bfin_reorg): Extend to handle the CSYNC anomaly as well. (TARGET_DEFAULT_TARGET_FLAGS): New. * doc/invoke.texi: Document -mcsync-anomaly, -mspecld-anomaly. From-SVN: r101880
2005-07-11basic-block.h: Give the BB flags enum a name, bb_flags.Steven Bosscher1-0/+14
* basic-block.h: Give the BB flags enum a name, bb_flags. Add new flags BB_FORWARDER_BLOCK, and BB_NONTHREADABLE_BLOCK. * cfgcleanup.c (enum bb_flags): Remove here. (BB_FLAGS, BB_SET_FLAG, BB_CLEAR_FLAG): Remove. (notice_new_block): Set/test bb->flags instead of aux via BB_FLAGS. (update_forwarder_flag): Likewise. (thread_jump): Likewise. (try_forward_edges): Likewise. (try_optimize_cfg): Likewise. Clear bb->flags before updating the forwarder flags. Don't clear bb->aux for all basic blocks. Only reset the BB_FORWARDER_BLOCK and BB_NONTHREADABLE_BLOCK flags. From-SVN: r101876
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