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| author | Victoria Stepanyan <victoria.stepanyan@amd.com> | 2016-02-04 07:52:08 +0000 |
|---|---|---|
| committer | Venkataramanan Kumar <vekumar@gcc.gnu.org> | 2016-02-04 07:52:08 +0000 |
| commit | 07d88205a6bd6cc94fdf981f399a3871bce6d3f2 (patch) | |
| tree | c9c02ec17dce31a72a4b21b926e96de181017953 /gcc | |
| parent | 05dd97db3c29364ea3fc8fc2a658586a9469db79 (diff) | |
| download | gcc-07d88205a6bd6cc94fdf981f399a3871bce6d3f2.zip gcc-07d88205a6bd6cc94fdf981f399a3871bce6d3f2.tar.gz gcc-07d88205a6bd6cc94fdf981f399a3871bce6d3f2.tar.bz2 | |
Disable auto prefetcher for -march=znver1.
2016-02-04 Victoria Stepanyan <victoria.stepanyan@amd.com>
* gcc/config/i386/x86-tune.def: Disable default prefetching
for -march=znver1.
From-SVN: r233127
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/i386/x86-tune.def | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f379bc4..5a06f67 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-02-04 Victoria Stepanyan <victoria.stepanyan@amd.com> + + * gcc/config/i386/x86-tune.def: Disable default prefetching + for -march=znver1. + 2016-02-03 Michael Meissner <meissner@linux.vnet.ibm.com> Vladimir Makarov <vmakarov@redhat.com> diff --git a/gcc/config/i386/x86-tune.def b/gcc/config/i386/x86-tune.def index 9d25e51..31a87b9 100644 --- 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. */ |