Emit cross regclass register moves for thumb2.
Minor code duplication cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76124 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/Thumb2InstrInfo.cpp b/lib/Target/ARM/Thumb2InstrInfo.cpp
index 6103463..081cf4f 100644
--- a/lib/Target/ARM/Thumb2InstrInfo.cpp
+++ b/lib/Target/ARM/Thumb2InstrInfo.cpp
@@ -87,3 +87,24 @@
return false;
}
+
+bool
+Thumb2InstrInfo::copyRegToReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ unsigned DestReg, unsigned SrcReg,
+ const TargetRegisterClass *DestRC,
+ const TargetRegisterClass *SrcRC) const {
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (I != MBB.end()) DL = I->getDebugLoc();
+
+ if ((DestRC == ARM::GPRRegisterClass &&
+ SrcRC == ARM::tGPRRegisterClass) ||
+ (DestRC == ARM::tGPRRegisterClass &&
+ SrcRC == ARM::GPRRegisterClass)) {
+ AddDefaultCC(AddDefaultPred(BuildMI(MBB, I, DL, get(getOpcode(ARMII::MOVr)),
+ DestReg).addReg(SrcReg)));
+ return true;
+ }
+
+ return ARMBaseInstrInfo::copyRegToReg(MBB, I, DestReg, SrcReg, DestRC, SrcRC);
+}