diff options
| author | Michael Liao <michael.liao@intel.com> | 2012-11-08 07:28:54 +0000 |
|---|---|---|
| committer | Michael Liao <michael.liao@intel.com> | 2012-11-08 07:28:54 +0000 |
| commit | be02a90de17f857ba65bbd8a11653ca1bad30adc (patch) | |
| tree | ca8ccf2e856410b18f269335eb1b8ed98c1c1426 /lib/Target/X86/X86Subtarget.cpp | |
| parent | 7629de3326318e533ab969abd1b0cbc569b3f3b7 (diff) | |
Add support of RTM from TSX extension
- Add RTM code generation support throught 3 X86 intrinsics:
xbegin()/xend() to start/end a transaction region, and xabort() to abort a
tranaction region
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167573 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86Subtarget.cpp')
| -rw-r--r-- | lib/Target/X86/X86Subtarget.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp index 4130637a65..8fd3a27002 100644 --- a/lib/Target/X86/X86Subtarget.cpp +++ b/lib/Target/X86/X86Subtarget.cpp @@ -302,6 +302,10 @@ void X86Subtarget::AutoDetectSubtargetFeatures() { HasBMI2 = true; ToggleFeature(X86::FeatureBMI2); } + if (IsIntel && ((EBX >> 11) & 0x1)) { + HasRTM = true; + ToggleFeature(X86::FeatureRTM); + } } } } @@ -330,6 +334,7 @@ X86Subtarget::X86Subtarget(const std::string &TT, const std::string &CPU, , HasLZCNT(false) , HasBMI(false) , HasBMI2(false) + , HasRTM(false) , IsBTMemSlow(false) , IsUAMemFast(false) , HasVectorUAMem(false) |