From: Aaron Ballman <aaron@aaronballman.com>
Date: Tue, 23 Apr 2013 17:38:44 +0000 (+0000)
Subject: Testing for _XCR_XFEATURE_ENABLED_MASK instead of a specific MSVC version because... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3579a29dba8fcc7285a3a5bec4512b4ca0a91ab3;p=oota-llvm.git

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!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180125 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Support/Host.cpp b/lib/Support/Host.cpp
index 445b3449680..27c99c89aee 100644
--- a/lib/Support/Host.cpp
+++ b/lib/Support/Host.cpp
@@ -119,7 +119,7 @@ static bool OSHasAVXSupport() {
   // there is no easy way to conditionally compile based on the assembler used.
   int rEAX, rEDX;
   __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);
 #else
   int rEAX = 0; // Ensures we return false