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Commit ef893a2a by Jan Hubicka Committed by Jan Hubicka
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* config/i386/x86-tune.def (X86_TUNE_AVOID_256FMA_CHAINS): Set of ZNVER2. 

From-SVN: r273729
parent 187dd65d
Showing with 11 additions and 0 deletions
gcc/ChangeLog
2019-07-23 Jan Hubicka <hubicka@ucw.cz>
* config/i386/i386-options.c (ix86_option_override_internal): Default
PARAM_AVOID_FMA_MAX_BITS to 256 for znver2.
* config/i386/x86-tune.def (X86_TUNE_AVOID_256FMA_CHAINS): Set
for ZNVER2.
2019-07-23 Jan Hubicka <hubicka@ucw.cz>
* config/i386/x86-tune-costs.h (znver2_memcpy): Update.
(znver2_costs): Update 256 bit SSE costs and multiplication.
......
gcc/config/i386/x86-tune.def
......@@ -431,6 +431,10 @@ DEF_TUNE (X86_TUNE_USE_GATHER, "use_gather",
smaller FMA chain. */
DEF_TUNE (X86_TUNE_AVOID_128FMA_CHAINS, "avoid_fma_chains", m_ZNVER)
/* X86_TUNE_AVOID_256FMA_CHAINS: Avoid creating loops with tight 256bit or
smaller FMA chain. */
DEF_TUNE (X86_TUNE_AVOID_256FMA_CHAINS, "avoid_fma256_chains", m_ZNVER2)
/*****************************************************************************/
/* AVX instruction selection tuning (some of SSE flags affects AVX, too) */
/*****************************************************************************/
......
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