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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/X86Subtarget.h | |
| parent | 0ae2510ea00454af29c6fc3f4b012e35d5f5d431 (diff) | |
| download | llvm-de1df103b9c578d0a1609054a5944342c5d0ba23.tar.gz llvm-de1df103b9c578d0a1609054a5944342c5d0ba23.tar.bz2 llvm-de1df103b9c578d0a1609054a5944342c5d0ba23.tar.xz | |
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/X86Subtarget.h')
| -rw-r--r-- | lib/Target/X86/X86Subtarget.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h index f930806be6..9e8b3f98d8 100644 --- a/lib/Target/X86/X86Subtarget.h +++ b/lib/Target/X86/X86Subtarget.h @@ -132,6 +132,10 @@ protected: /// this is true for most x86-64 chips, but not the first AMD chips. bool HasCmpxchg16b; + /// UseLeaForSP - True if the LEA instruction should be used for adjusting + /// the stack pointer. This is an optimization for Intel Atom processors. + bool UseLeaForSP; + /// PostRAScheduler - True if using post-register-allocation scheduler. bool PostRAScheduler; @@ -214,6 +218,7 @@ public: bool isUnalignedMemAccessFast() const { return IsUAMemFast; } bool hasVectorUAMem() const { return HasVectorUAMem; } bool hasCmpxchg16b() const { return HasCmpxchg16b; } + bool useLeaForSP() const { return UseLeaForSP; } bool isAtom() const { return X86ProcFamily == IntelAtom; } |