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| author | Jan Hubicka <jh@suse.cz> | 2001-01-13 09:57:29 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-01-13 08:57:29 +0000 |
| commit | 9e7adcb3f02fed791a723af46c6bdb16b81019bb (patch) | |
| tree | c70ae326ad613b614bd7ef8b4da3a8ae9e7fabd0 /gcc/cppmain.c | |
| parent | 9323f9693a7eaa07669840009e0dc65cc625e9a2 (diff) | |
| download | gcc-9e7adcb3f02fed791a723af46c6bdb16b81019bb.zip gcc-9e7adcb3f02fed791a723af46c6bdb16b81019bb.tar.gz gcc-9e7adcb3f02fed791a723af46c6bdb16b81019bb.tar.bz2 | |
i386.c (ix86_fp_comparison_arithmetics_cost, [...]): New functions.
* i386.c (ix86_fp_comparison_arithmetics_cost,
ix86_fp_comparison_fcomi_cost, ix86_fp_comparison_sahf_cost,
ix86_fp_comparison_cost): New functions.
(ix86_expand_fp_compare): Use the costs to choose best bethod; add
two new parameters SECOND_TEST and BYPASS_TEST; allow generating
two-branch sequences; make static.
(ix86_use_fcomi_compare): Do decision according to the costs.
(split_fp_branch): New.
* i386.md (compare-and-branch patterns): Use split_fp_branch.
* i386-protos.h (ix86_expand_fp_compare): Remove
(ix86_split_fp_branch): Declare.
* i386.h (PREDICATE_CODES): Update codes from fcmov_comparison_operand
and ix86_comparison_operator.
* i386.c (ix86_prepare_fp_compare_args): Try to rearange the comparison
to make it cheaper.
* i386.c (put_condition_code): Output properly the unordered/ordered
compares in fp case.
(ix86_expand_fp_movcc): Use ix86_expand_compare infrastructure.
* tm.texi (REVERSE_CONDITION): Document.
* i386.c (ix86_fp_compare_mode): Simplify; return always CCFPmode
in -ffast-math mode.
* i386.h (REVERSE_CONDITION, REVERSIBLE_CC_MODE): New macro.
From-SVN: r38979
Diffstat (limited to 'gcc/cppmain.c')
0 files changed, 0 insertions, 0 deletions