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Simplify a few more uses of reg_iterator.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82812 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-09-25 22:26:13 +00:00
parent 29438d13e0
commit 2bf0649e05
3 changed files with 8 additions and 12 deletions
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6
lib/CodeGen/RegAllocLinearScan.cpp
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@@ -397,10 +397,10 @@ unsigned RALinScan::attemptTrivialCoalescing(LiveInterval &cur, unsigned Reg) {
// Remove unnecessary kills since a copy does not clobber the register.
if (li_->hasInterval(SrcReg)) {
LiveInterval &SrcLI = li_->getInterval(SrcReg);
for (MachineRegisterInfo::reg_iterator I = mri_->reg_begin(cur.reg),
E = mri_->reg_end(); I != E; ++I) {
for (MachineRegisterInfo::use_iterator I = mri_->use_begin(cur.reg),
E = mri_->use_end(); I != E; ++I) {
MachineOperand &O = I.getOperand();
if (!O.isUse() || !O.isKill())
if (!O.isKill())
continue;
MachineInstr *MI = &*I;
if (SrcLI.liveAt(li_->getDefIndex(li_->getInstructionIndex(MI))))