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| author | Jan Hubicka <hubicka@ucw.cz> | 2017-10-27 16:30:00 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2017-10-27 14:30:00 +0000 |
| commit | 4c249d97372f1d5f4da9f6f65e4b5be9dad8e3c7 (patch) | |
| tree | 54434d4e78b787931ddcaeb7ed53c15c8623cb63 /gcc | |
| parent | 7181cca3d01eee81d445f17716e43309fe301c5a (diff) | |
| download | gcc-4c249d97372f1d5f4da9f6f65e4b5be9dad8e3c7.zip gcc-4c249d97372f1d5f4da9f6f65e4b5be9dad8e3c7.tar.gz gcc-4c249d97372f1d5f4da9f6f65e4b5be9dad8e3c7.tar.bz2 | |
x86-tune.def (X86_TUNE_PARTIAL_REG_DEPENDENCY, [...]): Disable for Haswell and newer CPUs.
* config/i386/x86-tune.def (X86_TUNE_PARTIAL_REG_DEPENDENCY,
X86_TUNE_MOVX): Disable for Haswell and newer CPUs.
From-SVN: r254152
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/i386/x86-tune.def | 8 |
2 files changed, 10 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index cdfc002..bf87faf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2017-10-27 Jan Hubicka <hubicka@ucw.cz> + + * config/i386/x86-tune.def (X86_TUNE_PARTIAL_REG_DEPENDENCY, + X86_TUNE_MOVX): Disable for Haswell and newer CPUs. + 2017-10-27 Jakub Jelinek <jakub@redhat.com> PR target/82703 diff --git a/gcc/config/i386/x86-tune.def b/gcc/config/i386/x86-tune.def index 9d01761..208d3c5 100644 --- a/gcc/config/i386/x86-tune.def +++ b/gcc/config/i386/x86-tune.def @@ -48,7 +48,8 @@ DEF_TUNE (X86_TUNE_SCHEDULE, "schedule", over partial stores. For example preffer MOVZBL or MOVQ to load 8bit value over movb. */ DEF_TUNE (X86_TUNE_PARTIAL_REG_DEPENDENCY, "partial_reg_dependency", - m_P4_NOCONA | m_CORE_ALL | m_BONNELL | m_SILVERMONT | m_INTEL + m_P4_NOCONA | m_CORE2 | m_NEHALEM | m_SANDYBRIDGE + | m_BONNELL | m_SILVERMONT | m_INTEL | m_KNL | m_KNM | m_AMD_MULTIPLE | m_GENERIC) /* X86_TUNE_SSE_PARTIAL_REG_DEPENDENCY: This knob promotes all store @@ -84,8 +85,9 @@ DEF_TUNE (X86_TUNE_PARTIAL_FLAG_REG_STALL, "partial_flag_reg_stall", /* X86_TUNE_MOVX: Enable to zero extend integer registers to avoid partial dependencies. */ DEF_TUNE (X86_TUNE_MOVX, "movx", - m_PPRO | m_P4_NOCONA | m_CORE_ALL | m_BONNELL | m_SILVERMONT - | m_KNL | m_KNM | m_INTEL | m_GEODE | m_AMD_MULTIPLE | m_GENERIC) + m_PPRO | m_P4_NOCONA | m_CORE2 | m_NEHALEM | m_SANDYBRIDGE + | m_BONNELL | m_SILVERMONT | m_KNL | m_KNM | m_INTEL + | m_GEODE | m_AMD_MULTIPLE | m_GENERIC) /* X86_TUNE_MEMORY_MISMATCH_STALL: Avoid partial stores that are followed by full sized loads. */ |