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Simplify this code by using use_iterator instead of reg_iterator

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and skipping the defs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82811 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-09-25 22:24:52 +00:00
parent eef490f459
commit 29438d13e0
1 changed files with 2 additions and 4 deletions
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6
lib/CodeGen/MachineSink.cpp
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@ -70,10 +70,8 @@ bool MachineSinking::AllUsesDominatedByBlock(unsigned Reg,
MachineBasicBlock *MBB) const {
assert(TargetRegisterInfo::isVirtualRegister(Reg) &&
"Only makes sense for vregs");
for (MachineRegisterInfo::reg_iterator I = RegInfo->reg_begin(Reg),
E = RegInfo->reg_end(); I != E; ++I) {
if (I.getOperand().isDef()) continue; // ignore def.
for (MachineRegisterInfo::use_iterator I = RegInfo->use_begin(Reg),
E = RegInfo->use_end(); I != E; ++I) {
// Determine the block of the use.
MachineInstr *UseInst = &*I;
MachineBasicBlock *UseBlock = UseInst->getParent();