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| author | Craig Topper <craig.topper@gmail.com> | 2011-10-17 05:33:10 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2011-10-17 05:33:10 +0000 |
| commit | 4b2dc74d3f17b40a57eba3068ce498a7f30769fe (patch) | |
| tree | 4af6049f024e484b185b6ffed96477f8dfc047db /lib/Target/X86/X86Subtarget.cpp | |
| parent | 24bb92556614434a5c5c2246b19e71d85426cab3 (diff) | |
| download | llvm-4b2dc74d3f17b40a57eba3068ce498a7f30769fe.tar.gz llvm-4b2dc74d3f17b40a57eba3068ce498a7f30769fe.tar.bz2 llvm-4b2dc74d3f17b40a57eba3068ce498a7f30769fe.tar.xz | |
Don't use inline assembly in 64-bit Visual Studio. Unfortunately, this means that cpuid leaf 7 can't be queried on versions of Visual Studio earlier than VS 2008 SP1. Fixes PR11147.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142177 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86Subtarget.cpp')
| -rw-r--r-- | lib/Target/X86/X86Subtarget.cpp | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp index c08dac9f99..45a8c2f1e8 100644 --- a/lib/Target/X86/X86Subtarget.cpp +++ b/lib/Target/X86/X86Subtarget.cpp @@ -278,14 +278,15 @@ void X86Subtarget::AutoDetectSubtargetFeatures() { } if (IsIntel && MaxLevel >= 7) { - X86_MC::GetCpuIDAndInfoEx(0x7, 0x0, &EAX, &EBX, &ECX, &EDX); - if ((EBX >> 3) & 0x1) { - HasBMI = true; - ToggleFeature(X86::FeatureBMI); - } - if ((EBX >> 8) & 0x1) { - HasBMI2 = true; - ToggleFeature(X86::FeatureBMI2); + if (!X86_MC::GetCpuIDAndInfoEx(0x7, 0x0, &EAX, &EBX, &ECX, &EDX)) { + if ((EBX >> 3) & 0x1) { + HasBMI = true; + ToggleFeature(X86::FeatureBMI); + } + if ((EBX >> 8) & 0x1) { + HasBMI2 = true; + ToggleFeature(X86::FeatureBMI2); + } } } } |