1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 653d0a4528..f39904ef7e 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -20,8 +20,14 @@
 #include "llvm/Support/FormattedStream.h"
 #include "llvm/Target/TargetOptions.h"
 #include "llvm/Target/TargetRegistry.h"
+#include "llvm/Support/CommandLine.h"
+
 using namespace llvm;
 
+static cl::opt<bool> DisableSSEDomain("disable-sse-domain",
+    cl::init(false), cl::Hidden,
+    cl::desc("Disable SSE Domain Fixing"));
+
 static MCAsmInfo *createMCAsmInfo(const Target &T, StringRef TT) {
   Triple TheTriple(TT);
   switch (TheTriple.getOS()) {
@@ -172,7 +178,8 @@ bool X86TargetMachine::addPostRegAlloc(PassManagerBase &PM,
 
 bool X86TargetMachine::addPreEmitPass(PassManagerBase &PM,
                                       CodeGenOpt::Level OptLevel) {
-  if (OptLevel != CodeGenOpt::None && Subtarget.hasSSE2()) {
+  if (OptLevel != CodeGenOpt::None && Subtarget.hasSSE2() &&
+      !DisableSSEDomain) {
     PM.add(createSSEDomainFixPass());
     return true;
   }