Remove references to INSERT_SUBREG after de-SSA
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107732 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index efe14e6..48ced83 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -1359,25 +1359,11 @@
// Insert a copy or an extract to replace the original extracts.
MachineBasicBlock::iterator InsertLoc = SomeMI;
- if (NewSrcSubIdx) {
- // Insert an extract subreg.
- BuildMI(*SomeMI->getParent(), InsertLoc, SomeMI->getDebugLoc(),
- TII->get(TargetOpcode::EXTRACT_SUBREG), DstReg)
- .addReg(SrcReg).addImm(NewSrcSubIdx);
- } else if (NewDstSubIdx) {
- // Do a subreg insertion.
- BuildMI(*SomeMI->getParent(), InsertLoc, SomeMI->getDebugLoc(),
- TII->get(TargetOpcode::INSERT_SUBREG), DstReg)
- .addReg(DstReg).addReg(SrcReg).addImm(NewDstSubIdx);
- } else {
- // Insert a copy.
- bool Emitted =
- TII->copyRegToReg(*SomeMI->getParent(), InsertLoc, DstReg, SrcReg,
- MRI->getRegClass(DstReg), MRI->getRegClass(SrcReg),
- SomeMI->getDebugLoc());
- (void)Emitted;
- }
- MachineBasicBlock::iterator CopyMI = prior(InsertLoc);
+ MachineInstr *CopyMI = BuildMI(*SomeMI->getParent(), SomeMI,
+ SomeMI->getDebugLoc(),
+ TII->get(TargetOpcode::COPY))
+ .addReg(DstReg, RegState::Define, NewDstSubIdx)
+ .addReg(SrcReg, 0, NewSrcSubIdx);
// Remove all the old extract instructions.
for (MachineRegisterInfo::use_nodbg_iterator