Move option to enable machine LICM into LLVMTargetMachine.cpp.

llvm-svn: 45572

2 files changed, 8 insertions, 13 deletions

diff --git a/llvm/lib/CodeGen/LLVMTargetMachine.cpp b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
index 6a8e775e6b2..15c1d67f3fc 100644
--- a/llvm/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
@@ -33,7 +33,10 @@ static cl::opt<bool> PrintEmittedAsm("print-emitted-asm", cl::Hidden,
 static cl::opt<bool>
 EnableSinking("enable-sinking", cl::init(false), cl::Hidden,
               cl::desc("Perform sinking on machine code"));
-
+static cl::opt<bool>
+PerformLICM("machine-licm",
+            cl::init(false), cl::Hidden,
+            cl::desc("Perform loop-invariant code motion on machine code"));
 
 FileModel::Model
 LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
@@ -73,7 +76,8 @@ LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
   if (PrintMachineCode)
     PM.add(createMachineFunctionPrinterPass(cerr));
 
-  PM.add(createMachineLICMPass());
+  if (PerformLICM)
+    PM.add(createMachineLICMPass());
   
   if (EnableSinking)
     PM.add(createMachineSinkingPass());
@@ -187,7 +191,8 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
   if (PrintMachineCode)
     PM.add(createMachineFunctionPrinterPass(cerr));
 
-  PM.add(createMachineLICMPass());
+  if (PerformLICM)
+    PM.add(createMachineLICMPass());
 
   // Perform register allocation to convert to a concrete x86 representation
   PM.add(createRegisterAllocator());
diff --git a/llvm/lib/CodeGen/MachineLICM.cpp b/llvm/lib/CodeGen/MachineLICM.cpp
index f33acf4a87f..e6b9c76e9cd 100644
--- a/llvm/lib/CodeGen/MachineLICM.cpp
+++ b/llvm/lib/CodeGen/MachineLICM.cpp
@@ -28,14 +28,6 @@
 
 using namespace llvm;
 
-namespace {
-  // Hidden options to help debugging
-  cl::opt<bool>
-  PerformLICM("machine-licm",
-              cl::init(false), cl::Hidden,
-              cl::desc("Perform loop-invariant code motion on machine code"));
-}
-
 STATISTIC(NumHoisted, "Number of machine instructions hoisted out of loops");
 
 namespace {
@@ -167,8 +159,6 @@ FunctionPass *llvm::createMachineLICMPass() { return new MachineLICM(); }
 /// loop.
 ///
 bool MachineLICM::runOnMachineFunction(MachineFunction &MF) {
-  if (!PerformLICM) return false; // For debugging.
-
   DOUT << "******** Machine LICM ********\n";
 
   Changed = false;