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Cosmetic changes. 

llvm-svn: 52479
This commit is contained in:
Evan Cheng 2008-06-19 01:21:26 +00:00
parent 2dbba985d5
commit 18e46d455b
1 changed files with 5 additions and 3 deletions
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8
llvm/lib/CodeGen/PHIElimination.cpp
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@ -97,7 +97,7 @@ bool PNE::runOnMachineFunction(MachineFunction &Fn) {
E = ImpDefs.end(); I != E; ++I) {
MachineInstr *DefMI = *I;
unsigned DefReg = DefMI->getOperand(0).getReg();
if (MRI->use_begin(DefReg) == MRI->use_end())
if (MRI->use_empty(DefReg))
DefMI->eraseFromParent();
}
@ -127,8 +127,10 @@ bool PNE::EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB) {
return true;
}
/// isSourceDefinedByImplicitDef - Return true if all sources of the phi node
/// are implicit_def's.
static bool isSourceDefinedByImplicitDef(const MachineInstr *MPhi,
const MachineRegisterInfo *MRI) {
const MachineRegisterInfo *MRI) {
for (unsigned i = 1; i != MPhi->getNumOperands(); i += 2) {
unsigned SrcReg = MPhi->getOperand(i).getReg();
const MachineInstr *DefMI = MRI->getVRegDef(SrcReg);
@ -229,7 +231,7 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
// Find a safe location to insert the copy, this may be the first terminator
// in the block (or end()).
MachineBasicBlock::iterator InsertPos = opBlock.getFirstTerminator();
// Insert the copy.
TII->copyRegToReg(opBlock, InsertPos, IncomingReg, SrcReg, RC, RC);