Add a command line option to disable global merge pass.
llvm-svn: 138536
diff --git a/llvm/lib/Target/ARM/ARMTargetMachine.cpp b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
index b006b0e..39552ac 100644
--- a/llvm/lib/Target/ARM/ARMTargetMachine.cpp
+++ b/llvm/lib/Target/ARM/ARMTargetMachine.cpp
@@ -21,6 +21,11 @@
#include "llvm/Target/TargetOptions.h"
using namespace llvm;
+static cl::opt<bool>
+EnableGlobalMerge("global-merge",
+ cl::desc("Enable global merge pass"),
+ cl::init(true));
+
extern "C" void LLVMInitializeARMTarget() {
// Register the target.
RegisterTargetMachine<ARMTargetMachine> X(TheARMTarget);
@@ -83,7 +88,7 @@
bool ARMBaseTargetMachine::addPreISel(PassManagerBase &PM,
CodeGenOpt::Level OptLevel) {
- if (OptLevel != CodeGenOpt::None)
+ if (OptLevel != CodeGenOpt::None && EnableGlobalMerge)
PM.add(createARMGlobalMergePass(getTargetLowering()));
return false;