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Testing for _XCR_XFEATURE_ENABLED_MASK instead of a specific MSVC version because some MSVC 2010 SP1 installations do not have the _xgetbv intrinsic. Patch thanks to Serge Pavlov!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180125 91177308-0d34-0410-b5e6-96231b3b80d8
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Aaron Ballman
2013-04-23 17:38:44 +00:00
parent 2a74639bc7
commit 3579a29dba
1 changed files with 1 additions and 1 deletions
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lib/Support/Host.cpp
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@@ -119,7 +119,7 @@ static bool OSHasAVXSupport() {
// there is no easy way to conditionally compile based on the assembler used. // there is no easy way to conditionally compile based on the assembler used.
int rEAX, rEDX; int rEAX, rEDX;
__asm__ (".byte 0x0f, 0x01, 0xd0" : "=a" (rEAX), "=d" (rEDX) : "c" (0)); __asm__ (".byte 0x0f, 0x01, 0xd0" : "=a" (rEAX), "=d" (rEDX) : "c" (0));
#elif defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 160040219 #elif defined(_MSC_FULL_VER) && defined(_XCR_XFEATURE_ENABLED_MASK)
unsigned long long rEAX = _xgetbv(_XCR_XFEATURE_ENABLED_MASK); unsigned long long rEAX = _xgetbv(_XCR_XFEATURE_ENABLED_MASK);
#else #else
int rEAX = 0; // Ensures we return false int rEAX = 0; // Ensures we return false