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| author | Evan Cheng <evan.cheng@apple.com> | 2012-02-07 22:50:41 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2012-02-07 22:50:41 +0000 |
| commit | de1df103b9c578d0a1609054a5944342c5d0ba23 (patch) | |
| tree | ebcae362ebc8246f1792d6c2d7792d0b6cf034d3 /lib/Target/X86/X86.td | |
| parent | 0ae2510ea00454af29c6fc3f4b012e35d5f5d431 (diff) | |
Use LEA to adjust stack ptr for Atom. Patch by Andy Zhang.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150008 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86.td')
| -rw-r--r-- | lib/Target/X86/X86.td | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Target/X86/X86.td b/lib/Target/X86/X86.td index d5db45b3cc..7f2ece79dd 100644 --- a/lib/Target/X86/X86.td +++ b/lib/Target/X86/X86.td @@ -115,6 +115,8 @@ def FeatureBMI : SubtargetFeature<"bmi", "HasBMI", "true", "Support BMI instructions">; def FeatureBMI2 : SubtargetFeature<"bmi2", "HasBMI2", "true", "Support BMI2 instructions">; +def FeatureLeaForSP : SubtargetFeature<"lea-sp", "UseLeaForSP", "true", + "Use LEA for adjusting the stack pointer">; //===----------------------------------------------------------------------===// // X86 processors supported. @@ -155,7 +157,7 @@ def : Proc<"core2", [FeatureSSSE3, FeatureCMPXCHG16B, def : Proc<"penryn", [FeatureSSE41, FeatureCMPXCHG16B, FeatureSlowBTMem]>; def : AtomProc<"atom", [ProcIntelAtom, FeatureSSE3, FeatureCMPXCHG16B, - FeatureMOVBE, FeatureSlowBTMem]>; + FeatureMOVBE, FeatureSlowBTMem, FeatureLeaForSP]>; // "Arrandale" along with corei3 and corei5 def : Proc<"corei7", [FeatureSSE42, FeatureCMPXCHG16B, FeatureSlowBTMem, FeatureFastUAMem, |