* [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets
@ 2013-02-18 18:44 Igor Zamyatin
2013-02-18 19:34 ` Uros Bizjak
0 siblings, 1 reply; 3+ messages in thread
From: Igor Zamyatin @ 2013-02-18 18:44 UTC (permalink / raw)
To: gcc-patches; +Cc: Uros Bizjak
Hi!
This small change enables FP reassociation for AVX2 processors. This
gives ~+1.5% in performance geomean for spec2006FP tests.
Bootstrapped/regtested on x86_64-linux, ok for trunk?
2013-02-14 Igor Zamyatin <igor.zamyatin@intel.com>
* config/i386/i386.c (initial_ix86_tune_features): Turn on fp
reassociation for avx2 targets.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index caf4894..cb84866 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2021,7 +2021,7 @@ static unsigned int
initial_ix86_tune_features[X86_TUNE_LAST] = {
/* X86_TUNE_REASSOC_FP_TO_PARALLEL: Try to produce parallel computations
during reassociation of fp computation. */
- m_ATOM,
+ m_ATOM | m_HASWELL,
/* X86_TUNE_GENERAL_REGS_SSE_SPILL: Try to spill general regs to SSE
regs instead of memory. */
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets
2013-02-18 18:44 [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets Igor Zamyatin
@ 2013-02-18 19:34 ` Uros Bizjak
2013-02-20 8:56 ` Kirill Yukhin
0 siblings, 1 reply; 3+ messages in thread
From: Uros Bizjak @ 2013-02-18 19:34 UTC (permalink / raw)
To: Igor Zamyatin; +Cc: gcc-patches
On Mon, Feb 18, 2013 at 7:44 PM, Igor Zamyatin <izamyatin@gmail.com> wrote:
> This small change enables FP reassociation for AVX2 processors. This
> gives ~+1.5% in performance geomean for spec2006FP tests.
>
> Bootstrapped/regtested on x86_64-linux, ok for trunk?
>
>
> 2013-02-14 Igor Zamyatin <igor.zamyatin@intel.com>
>
> * config/i386/i386.c (initial_ix86_tune_features): Turn on fp
> reassociation for avx2 targets.
OK (it is a tuning patch).
Thanks,
Uros.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets
2013-02-18 19:34 ` Uros Bizjak
@ 2013-02-20 8:56 ` Kirill Yukhin
0 siblings, 0 replies; 3+ messages in thread
From: Kirill Yukhin @ 2013-02-20 8:56 UTC (permalink / raw)
To: Uros Bizjak; +Cc: Igor Zamyatin, gcc-patches List
> OK (it is a tuning patch).
>
Hi,
Checked in: http://gcc.gnu.org/ml/gcc-cvs/2013-02/msg00540.html
Thanks, K
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-02-18 18:44 [PATCH, x86, AVX2] FP reassociation enabling for AVX2 targets Igor Zamyatin
2013-02-18 19:34 ` Uros Bizjak
2013-02-20 8:56 ` Kirill Yukhin
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