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[X86] Add 'FeatureSlowSHLD' to cpu 'bdver3'. Also explicit set FeatureAVX and FeatureSSE4A for all the bdver* cpus. 

This patch adds 'FeatureSlowSHLD' to 'bdver3'.
According to the official AMD optimization guide for amdfam15: "Using
alternative code in place of SHLD achieves lower overall latency and
requires fewer execution resources. The 32-bit and 64-bit forms of
ADD, ADC, SHR, and LEA (except 16-bit form) are DirectPath
instructions, while SHLD is a VectorPath instruction."

This patch also explicitly sets feature AVX and SSE4A for all the bdver*
cpus. This part of the patch is a non-functional change and it is mainly
done for clarity reasons (Both XOP and FMA4 already imply AVX and SSE4A).

llvm-svn: 221296
This commit is contained in:
Andrea Di Biagio 2014-11-04 21:18:09 +00:00
parent af20fae2fb
commit f5b34e535d
1 changed files with 11 additions and 8 deletions
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19
llvm/lib/Target/X86/X86.td
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@ -355,27 +355,30 @@ def : ProcessorModel<"btver2", BtVer2Model,
// Bulldozer
def : Proc<"bdver1", [FeatureXOP, FeatureFMA4, FeatureCMPXCHG16B,
FeatureAES, FeaturePRFCHW, FeaturePCLMUL,
FeatureLZCNT, FeaturePOPCNT, FeatureSlowSHLD]>;
FeatureAVX, FeatureSSE4A, FeatureLZCNT,
FeaturePOPCNT, FeatureSlowSHLD]>;
// Piledriver
def : Proc<"bdver2", [FeatureXOP, FeatureFMA4, FeatureCMPXCHG16B,
FeatureAES, FeaturePRFCHW, FeaturePCLMUL,
FeatureF16C, FeatureLZCNT,
FeaturePOPCNT, FeatureBMI, FeatureTBM,
FeatureFMA, FeatureSlowSHLD]>;
FeatureAVX, FeatureSSE4A, FeatureF16C,
FeatureLZCNT, FeaturePOPCNT, FeatureBMI,
FeatureTBM, FeatureFMA, FeatureSlowSHLD]>;
// Steamroller
def : Proc<"bdver3", [FeatureXOP, FeatureFMA4, FeatureCMPXCHG16B,
FeatureAES, FeaturePRFCHW, FeaturePCLMUL,
FeatureF16C, FeatureLZCNT,
FeaturePOPCNT, FeatureBMI, FeatureTBM,
FeatureFMA, FeatureFSGSBase]>;
FeatureAVX, FeatureSSE4A, FeatureF16C,
FeatureLZCNT, FeaturePOPCNT, FeatureBMI,
FeatureTBM, FeatureFMA, FeatureSlowSHLD,
FeatureFSGSBase]>;
// Excavator
def : Proc<"bdver4", [FeatureAVX2, FeatureXOP, FeatureFMA4,
FeatureCMPXCHG16B, FeatureAES, FeaturePRFCHW,
FeaturePCLMUL, FeatureF16C, FeatureLZCNT,
FeaturePOPCNT, FeatureBMI, FeatureBMI2,
FeatureTBM, FeatureFMA, FeatureFSGSBase]>;
FeatureTBM, FeatureFMA, FeatureSSE4A,
FeatureFSGSBase]>;
def : Proc<"geode", [Feature3DNowA]>;