From: Nick Lewycky <nicholas@mxc.ca>
Date: Tue, 2 Aug 2011 00:40:16 +0000 (+0000)
Subject: Bail from FastISel when we encounter a volatile memset intrinsic. Patch by Ivan
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3207c9a44093156c3906b62cd9cb74726751b7b4;p=oota-llvm.git

Bail from FastISel when we encounter a volatile memset intrinsic. Patch by Ivan
Krasin!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136663 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index 24f4437ec7d..f5db6d28a24 100644
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -1365,6 +1365,9 @@ bool X86FastISel::X86VisitIntrinsicCall(const IntrinsicInst &I) {
   case Intrinsic::memset: {
     const MemSetInst &MSI = cast<MemSetInst>(I);
 
+    if (MSI.isVolatile())
+      return false;
+
     unsigned SizeWidth = Subtarget->is64Bit() ? 64 : 32;
     if (!MSI.getLength()->getType()->isIntegerTy(SizeWidth))
       return false;