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path: root/lib/CodeGen/TwoAddressInstructionPass.cpp
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Diffstat (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp')
-rw-r--r--lib/CodeGen/TwoAddressInstructionPass.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp
index b67f84b0f9..83468d9273 100644
--- a/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -798,6 +798,7 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
// a = a op c
unsigned regA = mi->getOperand(ti).getReg();
unsigned regB = mi->getOperand(si).getReg();
+ unsigned regASubIdx = mi->getOperand(ti).getSubReg();
assert(TargetRegisterInfo::isVirtualRegister(regB) &&
"cannot update physical register live information");
@@ -946,7 +947,7 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
DefMI->isSafeToReMat(TII, regB) &&
isProfitableToReMat(regB, rc, mi, DefMI, mbbi, Dist)){
DEBUG(cerr << "2addr: REMATTING : " << *DefMI << "\n");
- TII->reMaterialize(*mbbi, mi, regA, DefMI);
+ TII->reMaterialize(*mbbi, mi, regA, regASubIdx, DefMI);
ReMatRegs.set(regB);
++NumReMats;
} else {