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| author | Changpeng Fang <changpeng.fang@amd.com> | 2011-06-20 21:52:32 +0000 |
|---|---|---|
| committer | Changpeng Fang <cfang@gcc.gnu.org> | 2011-06-20 21:52:32 +0000 |
| commit | 97ef5ae607b720d05e17808bbe18903c70dd6dac (patch) | |
| tree | 51d4870f05768ae407bb70cceb7ef3fe7a6044e4 /gcc/config | |
| parent | fea549356d388607081f1a83ebac557259314d62 (diff) | |
| download | gcc-97ef5ae607b720d05e17808bbe18903c70dd6dac.zip gcc-97ef5ae607b720d05e17808bbe18903c70dd6dac.tar.gz gcc-97ef5ae607b720d05e17808bbe18903c70dd6dac.tar.bz2 | |
pr49089: enable avx256 splitting unaligned load/store only when beneficial
* config/i386/i386.c (avx256_split_unaligned_load): New definition.
(avx256_split_unaligned_store): New definition.
(ix86_option_override_internal): Enable avx256 unaligned load/store
splitting only when avx256_split_unaligned_load/store is set.
From-SVN: r175230
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/i386/i386.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 6029010..014401b 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -2122,6 +2122,12 @@ static const unsigned int x86_arch_always_fancy_math_387 = m_PENT | m_ATOM | m_PPRO | m_AMD_MULTIPLE | m_PENT4 | m_NOCONA | m_CORE2I7 | m_GENERIC; +static const unsigned int x86_avx256_split_unaligned_load + = m_COREI7 | m_GENERIC; + +static const unsigned int x86_avx256_split_unaligned_store + = m_COREI7 | m_BDVER1 | m_GENERIC; + /* In case the average insn count for single function invocation is lower than this constant, emit fast (but longer) prologue and epilogue code. */ @@ -3660,9 +3666,11 @@ ix86_option_override_internal (bool main_args_p) if (flag_expensive_optimizations && !(target_flags_explicit & MASK_VZEROUPPER)) target_flags |= MASK_VZEROUPPER; - if (!(target_flags_explicit & MASK_AVX256_SPLIT_UNALIGNED_LOAD)) + if ((x86_avx256_split_unaligned_load & ix86_tune_mask) + && !(target_flags_explicit & MASK_AVX256_SPLIT_UNALIGNED_LOAD)) target_flags |= MASK_AVX256_SPLIT_UNALIGNED_LOAD; - if (!(target_flags_explicit & MASK_AVX256_SPLIT_UNALIGNED_STORE)) + if ((x86_avx256_split_unaligned_store & ix86_tune_mask) + && !(target_flags_explicit & MASK_AVX256_SPLIT_UNALIGNED_STORE)) target_flags |= MASK_AVX256_SPLIT_UNALIGNED_STORE; } } |