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Add debug prints for when optimizeLoadInstr folds a load. 

llvm-svn: 170298
This commit is contained in:
Craig Topper 2012-12-17 03:56:00 +00:00
parent 555d1aa3a4
commit 588ceec0f7
1 changed files with 6 additions and 0 deletions
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6
llvm/lib/CodeGen/PeepholeOptimizer.cpp
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@ -66,6 +66,7 @@
#include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Support/CommandLine.h" #include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Target/TargetInstrInfo.h" #include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetRegisterInfo.h" #include "llvm/Target/TargetRegisterInfo.h"
using namespace llvm; using namespace llvm;
@ -478,6 +479,9 @@ bool PeepholeOptimizer::foldImmediate(MachineInstr *MI, MachineBasicBlock *MBB,
} }
bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) { bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
DEBUG(dbgs() << "********** PEEPHOLE OPTIMIZER **********\n");
DEBUG(dbgs() << "********** Function: " << MF.getName() << '\n');
if (DisablePeephole) if (DisablePeephole)
return false; return false;
@ -552,6 +556,8 @@ bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
FoldAsLoadDefReg, DefMI); FoldAsLoadDefReg, DefMI);
if (FoldMI) { if (FoldMI) {
// Update LocalMIs since we replaced MI with FoldMI and deleted DefMI. // Update LocalMIs since we replaced MI with FoldMI and deleted DefMI.
DEBUG(dbgs() << "Replacing: " << *MI);
DEBUG(dbgs() << " With: " << *FoldMI);
LocalMIs.erase(MI); LocalMIs.erase(MI);
LocalMIs.erase(DefMI); LocalMIs.erase(DefMI);
LocalMIs.insert(FoldMI); LocalMIs.insert(FoldMI);