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GlobalISel: tidy up def/use test. NFC. 

llvm-svn: 293545
This commit is contained in:
Tim Northover 2017-01-30 20:52:37 +00:00
parent ee57984c11
commit c94d70336b
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
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@ -142,9 +142,9 @@ bool InstructionSelect::runOnMachineFunction(MachineFunction &MF) {
unsigned VReg = VRegToType.first;
auto *RC = MRI.getRegClassOrNull(VReg);
MachineInstr *MI = nullptr;
if (MRI.def_instr_begin(VReg) != MRI.def_instr_end())
if (!MRI.def_empty(VReg))
MI = &*MRI.def_instr_begin(VReg);
else if (MRI.use_instr_begin(VReg) != MRI.use_instr_end())
else if (!MRI.use_empty(VReg))
MI = &*MRI.use_instr_begin(VReg);
if (MI && !RC) {