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Add SlowBTMem to Sandy Bridge and newer Intel CPUs. Reading through Agner Fog's table suggests there have been no improvements to these processors relative to Westmere for bit test instructions. 

llvm-svn: 244395
This commit is contained in:
Craig Topper 2015-08-08 07:20:04 +00:00
parent 9592df7901
commit 01dd4ea334
1 changed files with 9 additions and 5 deletions
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14
llvm/lib/Target/X86/X86.td
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@ -307,6 +307,7 @@ def : WestmereProc<"westmere">;
class SandyBridgeProc<string Name> : ProcessorModel<Name, SandyBridgeModel, [
FeatureAVX,
FeatureCMPXCHG16B,
FeatureSlowBTMem,
FeatureFastUAMem,
FeatureSlowUAMem32,
FeaturePOPCNT,
@ -319,6 +320,7 @@ def : SandyBridgeProc<"corei7-avx">; // Legacy alias.
class IvyBridgeProc<string Name> : ProcessorModel<Name, SandyBridgeModel, [
FeatureAVX,
FeatureCMPXCHG16B,
FeatureSlowBTMem,
FeatureFastUAMem,
FeatureSlowUAMem32,
FeaturePOPCNT,
@ -334,6 +336,7 @@ def : IvyBridgeProc<"core-avx-i">; // Legacy alias.
class HaswellProc<string Name> : ProcessorModel<Name, HaswellModel, [
FeatureAVX2,
FeatureCMPXCHG16B,
FeatureSlowBTMem,
FeatureFastUAMem,
FeaturePOPCNT,
FeatureAES,
@ -356,6 +359,7 @@ def : HaswellProc<"core-avx2">; // Legacy alias.
class BroadwellProc<string Name> : ProcessorModel<Name, HaswellModel, [
FeatureAVX2,
FeatureCMPXCHG16B,
FeatureSlowBTMem,
FeatureFastUAMem,
FeaturePOPCNT,
FeatureAES,
@ -390,11 +394,11 @@ def : KnightsLandingProc<"knl">;
class SkylakeProc<string Name> : ProcessorModel<Name, HaswellModel,
[FeatureAVX512, FeatureCDI,
FeatureDQI, FeatureBWI, FeatureVLX,
FeatureCMPXCHG16B, FeatureFastUAMem, FeaturePOPCNT,
FeatureAES, FeaturePCLMUL, FeatureRDRAND, FeatureF16C,
FeatureFSGSBase, FeatureMOVBE, FeatureLZCNT, FeatureBMI,
FeatureBMI2, FeatureFMA, FeatureRTM, FeatureHLE,
FeatureSlowIncDec, FeatureMPX]>;
FeatureCMPXCHG16B, FeatureSlowBTMem, FeatureFastUAMem,
FeaturePOPCNT, FeatureAES, FeaturePCLMUL, FeatureRDRAND,
FeatureF16C, FeatureFSGSBase, FeatureMOVBE, FeatureLZCNT,
FeatureBMI, FeatureBMI2, FeatureFMA, FeatureRTM,
FeatureHLE, FeatureSlowIncDec, FeatureMPX]>;
def : SkylakeProc<"skylake">;
def : SkylakeProc<"skx">; // Legacy alias.