- Change TargetInstrInfo::reMaterialize to pass in TargetRegisterInfo.
- If destination is a physical register and it has a subreg index, use the
sub-register instead.
This fixes PR5423.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88745 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 868d31d..7925101 100644
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -921,8 +921,15 @@
reMaterialize(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DestReg, unsigned SubIdx,
- const MachineInstr *Orig) const {
+ const MachineInstr *Orig,
+ const TargetRegisterInfo *TRI) const {
DebugLoc dl = Orig->getDebugLoc();
+
+ if (SubIdx && TargetRegisterInfo::isPhysicalRegister(DestReg)) {
+ DestReg = TRI->getSubReg(DestReg, SubIdx);
+ SubIdx = 0;
+ }
+
unsigned Opcode = Orig->getOpcode();
switch (Opcode) {
default: {