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| author | Michael Liao <michael.liao@intel.com> | 2013-03-28 23:41:26 +0000 |
|---|---|---|
| committer | Michael Liao <michael.liao@intel.com> | 2013-03-28 23:41:26 +0000 |
| commit | c26392aa5d9c2dbca2909d6874d181455f8aeb8f (patch) | |
| tree | bffcf5f7ba83d78594c585ce428438c30ba0105d /lib/Target/X86/X86Subtarget.cpp | |
| parent | 258d9b7bc021ebc78f5a3aef3907e225e632edfa (diff) | |
| download | llvm-c26392aa5d9c2dbca2909d6874d181455f8aeb8f.tar.gz llvm-c26392aa5d9c2dbca2909d6874d181455f8aeb8f.tar.bz2 llvm-c26392aa5d9c2dbca2909d6874d181455f8aeb8f.tar.xz | |
Add support of RDSEED defined in AVX2 extension
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178314 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 fa991298a6..4132463ee8 100644 --- a/lib/Target/X86/X86Subtarget.cpp +++ b/lib/Target/X86/X86Subtarget.cpp @@ -334,6 +334,10 @@ void X86Subtarget::AutoDetectSubtargetFeatures() { HasADX = true; ToggleFeature(X86::FeatureADX); } + if (IsIntel && ((EBX >> 18) & 0x1)) { + HasRDSEED = true; + ToggleFeature(X86::FeatureRDSEED); + } } } } @@ -454,6 +458,7 @@ void X86Subtarget::initializeEnvironment() { HasHLE = false; HasADX = false; HasPRFCHW = false; + HasRDSEED = false; IsBTMemSlow = false; IsUAMemFast = false; HasVectorUAMem = false; |