* gensupport.c: Include hashtab.h.
(insn_elision, condition_table, hash_c_test, cmp_c_test,
maybe_eval_c_test): New routines and data structures to
support insn elision.
(init_md_reader): Read and initialize the condition_table.
(read_md_rtx): Discard insn patterns whose C test is provably
always false.
* gensupport.h: Declare new functions and data structures.
* genconditions.c, dummy-conditions.c: New files.
* Makefile.in: Build genconditions; run it to construct
insn-conditions.c; build that and link it into most gen*
programs.
(HOST_SUPPORT, HOST_EARLY_SUPPORT): New variables.
(GEN): Delete, unused.
(STAGESTUFF): Update.
* gencodes.c: (gen_insn): #define CODE_FOR_xxx equal to
CODE_FOR_nothing for all elided patterns.
(main): Tweaked to support this.
* genflags.c (gen_proto): Emit a static inline generator
function here for all elided patterns, which simply returns
NULL_RTX.
(gen_insn): Do not define HAVE_xxx for elided patterns.
(main): Tweaked to support this. No need to forward-declare
struct rtx_def.
* genrecog.c: Do not bother emitting the C test if it's known
to be true at compile time.
From-SVN: r55839
* arm.md (sibcall, sibcall_value): Add RETURN as part of the pattern,
remove clobber of LR.
(sibcall_insn, sibcall_value_insn): Update accordingly.
(sibcall_epilogue): Remove debugging comment from assembler stream.
From-SVN: r55836
* defaults.h (ASM_OUTPUT_MEASURED_SIZE): Take only two
arguments. Always use ".-symbol" as expression argument.
* doc/tm.texi: Update to match. Document requirement for
".size symbol, .-symbol" to be acceptable to assembler.
* config/elfos.h, config/netbsd-aout.h, config/openbsd.h,
config/arm/elf.h, config/avr/avr.h, config/cris/aout.h,
config/i386/freebsd-aout.h, config/i386/sco5.h,
config/ip2k/ip2k.h, config/m88k/m88k.h, config/xtensa/elf.h,
config/xtensa/linux.h: Update uses of ASM_OUTPUT_MEASURED_SIZE.
From-SVN: r55820
* prefix.c (update_path): Don't strip single `.' path components
unless stripping a later `..' component. Exit loop as soon as
a valid path is found.
From-SVN: r55814
* builtins.def [DEF_GCC_BUILTIN]: Require an explicit ATTRS
argument. Mark BUILT_IN_RETURN, BUILT_IN_EH_RETURN,
BUILT_IN_LONGJMP and BUILT_IN_TRAP as noreturn, the ISO C99
floating point unordered comparisons (e.g. __builtin_isgreater)
as const, and leave the remaining GCC_BUILTINs unchanged.
* c-decl.c (builtin_function): No need to explicitly mark
BUILT_IN_RETURN and BUILT_IN_EH_RETURN as noreturn.
* cp/decl.c (builtin_function_1): No need to explicitly mark
BUILT_IN_RETURN and BUILT_IN_EH_RETURN as noreturn.
From-SVN: r55805
* Makefile.in: rtlanal.o now depends upon real.h.
* flags.h [flag_signaling_nans]: New flag.
[HONOR_SNANS]: New macro.
* toplev.c [flag_signaling_nans]: Initialize to false.
(f_options): Add processing for "-fsignaling-nans".
(set_fast_math_flags): Clear flag_signaling_nans with -ffast-math.
(process_options): flag_signaling_nans implies flag_trapping_math.
* c-common.c (cb_register_builtins): Define __SUPPORT_SNAN__
when -fsignaling-nans. First step to implementing WG14's N965.
* fold-const.c (fold) [MULT_EXPR]: Conditionalize transforming
1.0 * x into x, and -1.0 * x into -x on !HONOR_SNANS.
[RDIV_EXPR]: Conditionalize x/1.0 into x on !HONOR_SNANS.
* simplify-rtx.c (simplify_relational_operation): Conditionalize
transforming abs(x) < 0.0 into false on !HONOR_SNANS.
* rtlanal.c: #include real.c for TARGET_FLOAT_FORMAT definitions
required by HONOR_SNANS. (may_trap_p): Floating point DIV, MOD,
UDIV, UMOD, GE, GT, LE, LT and COMPARE may always trap with
-fsignaling_nans. EQ and NE only trap for flag_signaling_nans
not flag_trapping_math (i.e. HONOR_SNANS but not HONOR_NANS).
* doc/invoke.texi: Document new -fsignaling-nans compiler option.
From-SVN: r55804
* cp/decl2.c (cxx_decode_option): Support -fno-builtin-foo.
* doc/invoke.texi: Document that both -fno-builtin-foo and
-fno-builtin are supported by the g++ front-end.
From-SVN: r55802
* configure.in: Rename config_gtfiles to target_gtfiles.
* configure: Regenerate.
* doc/gty.texi: Update reference.
* config.gcc (powerpc-*-darwin*): Set target_gtfiles
instead of appending to it.
From-SVN: r55801
* function.c (assign_parms): Handle frontend-directed pass by
invisible reference.
cp/
* call.c (build_over_call): Likewise.
(cp_convert_parm_for_inlining): New fn.
(convert_for_arg_passing): New fn.
(convert_default_arg, build_over_call): Use it.
(type_passed_as): New fn.
* pt.c (tsubst_decl): Use it.
* decl2.c (cp_build_parm_decl): New fn.
(build_artificial_parm): Use it.
(start_static_storage_duration_function): Likewise.
* decl.c (start_cleanup_fn, grokdeclarater): Likewise.
(grokparms): Don't mess with DECL_ARG_TYPE.
* typeck.c (convert_arguments): Use convert_for_arg_passing.
* cp-lang.c (LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING):
Define.
* cp-tree.h: Declare new fns.
From-SVN: r55781
* config/rs6000/rs6000.md: Enable patterns using rlwinm for
PowerPC64. Replace "T" and "S" constraints with "n" when the
predicate will do. Formatting fixes.
(extzvsi_internal2): Use "andi.", "andis." and attr type of "compare"
as for extzvsi_internal1.
From-SVN: r55770
