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
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index c08dac9..45a8c2f 100644
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -278,14 +278,15 @@
}
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);
+ }
}
}
}