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| author | Enkovich Ilya <ilya.enkovich@intel.com> | 2011-09-08 13:41:27 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2011-09-08 06:41:27 -0700 |
| commit | d275ab8b8056a692e67d0f1a46bc766762f62806 (patch) | |
| tree | 7ab64f0e1c0d2389927e770b85b9d813bf850f3e /gcc/fortran/trans-expr.c | |
| parent | 868141900a1c1c7a76c5a48625dbfa1e81d8051c (diff) | |
| download | gcc-d275ab8b8056a692e67d0f1a46bc766762f62806.zip gcc-d275ab8b8056a692e67d0f1a46bc766762f62806.tar.gz gcc-d275ab8b8056a692e67d0f1a46bc766762f62806.tar.bz2 | |
Improve AGU stalls avoidance optimization.
2011-09-08 Enkovich Ilya <ilya.enkovich@intel.com>
* config/i386/i386-protos.h (ix86_lea_outperforms): New.
(ix86_avoid_lea_for_add): Likewise.
(ix86_avoid_lea_for_addr): Likewise.
(ix86_split_lea_for_addr): Likewise.
* config/i386/i386.c (LEA_MAX_STALL): New.
(increase_distance): Likewise.
(insn_defines_reg): Likewise.
(insn_uses_reg_mem): Likewise.
(distance_non_agu_define_in_bb): Likewise.
(distance_agu_use_in_bb): Likewise.
(ix86_lea_outperforms): Likewise.
(ix86_ok_to_clobber_flags): Likewise.
(ix86_avoid_lea_for_add): Likewise.
(ix86_avoid_lea_for_addr): Likewise.
(ix86_split_lea_for_addr): Likewise.
(distance_non_agu_define): Search in pred BBs added.
(distance_agu_use): Search in succ BBs added.
(IX86_LEA_PRIORITY): Value changed from 2 to 0.
(LEA_SEARCH_THRESHOLD): Now depends on LEA_MAX_STALL.
(ix86_lea_for_add_ok): Use ix86_lea_outperforms to make decision.
* config/i386/i386.md: Split added to transform non destructive
add into move and add.
(lea_1): transformed into insn_and_split to avoid AGU stalls.
(lea<mode>_2): Likewise.
From-SVN: r178689
Diffstat (limited to 'gcc/fortran/trans-expr.c')
0 files changed, 0 insertions, 0 deletions