diff options
Diffstat (limited to 'lib/Support')
| -rw-r--r-- | lib/Support/Host.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Support/Host.cpp b/lib/Support/Host.cpp index fef66e634f..73d98d1487 100644 --- a/lib/Support/Host.cpp +++ b/lib/Support/Host.cpp @@ -152,7 +152,8 @@ std::string sys::getHostCPUName() { // If CPUID indicates support for XSAVE, XRESTORE and AVX, and XGETBV // indicates that the AVX registers will be saved and restored on context // switch, then we have full AVX support. - bool HasAVX = (ECX & ((1 << 28) | (1 << 27))) != 0 && OSHasAVXSupport(); + const unsigned AVXBits = (1 << 27) | (1 << 28); + bool HasAVX = ((ECX & AVXBits) == AVXBits) && OSHasAVXSupport(); GetX86CpuIDAndInfo(0x80000001, &EAX, &EBX, &ECX, &EDX); bool Em64T = (EDX >> 29) & 0x1; |