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Enable automatic detection of FMA3 support to allow intrinsics to be used.

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llvm-svn: 157805
This commit is contained in:
Craig Topper 2012-06-01 06:10:14 +00:00
parent 02e5a00a70
commit 04dc566bb2
1 changed files with 4 additions and 6 deletions
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10
lib/Target/X86/X86Subtarget.cpp
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@ -205,12 +205,10 @@ void X86Subtarget::AutoDetectSubtargetFeatures() {
HasPCLMUL = true;
ToggleFeature(X86::FeaturePCLMUL);
}
// FMA3 autodetection is switched off until we have a special flag
// in code generator
//if ((ECX >> 12) & 0x1) {
// HasFMA3 = true;
// ToggleFeature(X86::FeatureFMA3);
//}
if ((ECX >> 12) & 0x1) {
HasFMA3 = true;
ToggleFeature(X86::FeatureFMA3);
}
if (IsIntel && ((ECX >> 22) & 0x1)) {
HasMOVBE = true;
ToggleFeature(X86::FeatureMOVBE);