Move pass configuration out of pass constructors: MachineLICM.

llvm-svn: 150099

llvm/include/llvm/CodeGen/Passes.h

@@ -93,6 +93,7 @@ public:
   /// Add the complete, standard set of LLVM CodeGen passes.
   /// Fully developed targets will not generally override this.
   virtual void addMachinePasses();
+
 protected:
   // Helper to verify the analysis is really immutable.
   void setOpt(bool &Opt, bool Val);
@@ -323,7 +324,7 @@ namespace llvm {
 
   /// createMachineLICMPass - This pass performs LICM on machine instructions.
   ///
-  FunctionPass *createMachineLICMPass(bool PreRegAlloc = true);
+  FunctionPass *createMachineLICMPass();
 
   /// createMachineSinkingPass - This pass performs sinking on machine
   /// instructions.

llvm/lib/CodeGen/MachineLICM.cpp

@@ -60,8 +60,6 @@ STATISTIC(NumPostRAHoisted,
 
 namespace {
   class MachineLICM : public MachineFunctionPass {
-    bool PreRegAlloc;
-
     const TargetMachine   *TM;
     const TargetInstrInfo *TII;
     const TargetLowering *TLI;
@@ -69,6 +67,7 @@ namespace {
     const MachineFrameInfo *MFI;
     MachineRegisterInfo *MRI;
     const InstrItineraryData *InstrItins;
+    bool PreRegAlloc;
 
     // Various analyses that we use...
     AliasAnalysis        *AA;      // Alias analysis info.
@@ -298,8 +297,8 @@ INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
 INITIALIZE_PASS_END(MachineLICM, "machinelicm",
                 "Machine Loop Invariant Code Motion", false, false)
 
-FunctionPass *llvm::createMachineLICMPass(bool PreRegAlloc) {
-  return new MachineLICM(PreRegAlloc);
+FunctionPass *llvm::createMachineLICMPass() {
+  return new MachineLICM();
 }
 
 /// LoopIsOuterMostWithPredecessor - Test if the given loop is the outer-most
@@ -332,6 +331,8 @@ bool MachineLICM::runOnMachineFunction(MachineFunction &MF) {
   MRI = &MF.getRegInfo();
   InstrItins = TM->getInstrItineraryData();
 
+  PreRegAlloc = MRI->isSSA();
+
   if (PreRegAlloc) {
     // Estimate register pressure during pre-regalloc pass.
     unsigned NumRC = TRI->getNumRegClasses();

llvm/lib/CodeGen/Passes.cpp

@@ -244,7 +244,7 @@ void TargetPassConfig::addMachinePasses() {
 
     // Run post-ra machine LICM to hoist reloads / remats.
     if (!DisablePostRAMachineLICM)
-      PM.add(createMachineLICMPass(false));
+      PM.add(createMachineLICMPass());
 
     printAndVerify("After StackSlotColoring and postra Machine LICM");
   }