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| author | Craig Topper <craig.topper@gmail.com> | 2011-10-16 07:55:05 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2011-10-16 07:55:05 +0000 |
| commit | b53fa8bf19a51f0c49a9f8b6ede3e2ff3bdfb961 (patch) | |
| tree | b1e46ae4478216cfe10014153b5825026f99d329 /lib/Target/X86/X86Subtarget.cpp | |
| parent | dc479c4a897bb7cc756370cc2051da79b65e7d16 (diff) | |
| download | llvm-b53fa8bf19a51f0c49a9f8b6ede3e2ff3bdfb961.tar.gz llvm-b53fa8bf19a51f0c49a9f8b6ede3e2ff3bdfb961.tar.bz2 llvm-b53fa8bf19a51f0c49a9f8b6ede3e2ff3bdfb961.tar.xz | |
Add X86 BZHI instruction as well as BMI2 feature detection.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142122 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 670073a07b..c08dac9f99 100644 --- a/lib/Target/X86/X86Subtarget.cpp +++ b/lib/Target/X86/X86Subtarget.cpp @@ -283,6 +283,10 @@ void X86Subtarget::AutoDetectSubtargetFeatures() { HasBMI = true; ToggleFeature(X86::FeatureBMI); } + if ((EBX >> 8) & 0x1) { + HasBMI2 = true; + ToggleFeature(X86::FeatureBMI2); + } } } @@ -307,6 +311,7 @@ X86Subtarget::X86Subtarget(const std::string &TT, const std::string &CPU, , HasF16C(false) , HasLZCNT(false) , HasBMI(false) + , HasBMI2(false) , IsBTMemSlow(false) , IsUAMemFast(false) , HasVectorUAMem(false) |