[llvm-commits] [llvm] r102941 - /llvm/trunk/lib/Target/X86/X86TargetMachine.cpp

[Eric Christopher]

Author: echristo
Date: Mon May  3 14:54:02 2010
New Revision: 102941

URL: http://llvm.org/viewvc/llvm-project?rev=102941&view=rev
Log:
Add an option, defaulting to off, to disable the sse domain crossing opts.

Modified:
    llvm/trunk/lib/Target/X86/X86TargetMachine.cpp

Modified: llvm/trunk/lib/Target/X86/X86TargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86TargetMachine.cpp?rev=102941&r1=102940&r2=102941&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86TargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86TargetMachine.cpp Mon May  3 14:54:02 2010
@@ -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::addPreEmitPass(PassManagerBase &PM,
                                       CodeGenOpt::Level OptLevel) {
-  if (OptLevel != CodeGenOpt::None && Subtarget.hasSSE2()) {
+  if (OptLevel != CodeGenOpt::None && Subtarget.hasSSE2() &&
+      !DisableSSEDomain) {
     PM.add(createSSEDomainFixPass());
     return true;
   }