Hi Maintainers,
This patch disables prefetching for -march=znver1 which is turned on by default.
gcc/ChangeLog:
2016-02-02 Victoria Stepanyan <[email protected]>
* gcc/config/i386/x86-tune.def: Disable default prefetching for
-march=znver1
Ok for trunk?
Victoria
--- a/gcc/config/i386/x86-tune.def
+++ b/gcc/config/i386/x86-tune.def
@@ -218,7 +218,7 @@ DEF_TUNE (X86_TUNE_FOUR_JUMP_LIMIT, "four_jump_limit",
at -O3. For the moment, the prefetching seems badly tuned for Intel
chips. */
DEF_TUNE (X86_TUNE_SOFTWARE_PREFETCHING_BENEFICIAL,
"software_prefetching_beneficial",
- m_K6_GEODE | m_AMD_MULTIPLE)
+ m_K6_GEODE | m_ATHLON_K8 | m_AMDFAM10 | m_BDVER | m_BTVER)
/* X86_TUNE_LCP_STALL: Avoid an expensive length-changing prefix stall
on 16-bit immediate moves into memory on Core2 and Corei7. */
