Make TargetInstrInfo::copyRegToReg return a bool indicating whether the copy requested
was inserted or not. This allows bitcast in fast isel to properly handle the case
where an appropriate reg-to-reg copy is not available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55375 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaInstrInfo.cpp b/lib/Target/Alpha/AlphaInstrInfo.cpp
index ec8857f..b566de4 100644
--- a/lib/Target/Alpha/AlphaInstrInfo.cpp
+++ b/lib/Target/Alpha/AlphaInstrInfo.cpp
@@ -133,15 +133,15 @@
return 2;
}
-void AlphaInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
+bool AlphaInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *DestRC,
const TargetRegisterClass *SrcRC) const {
//cerr << "copyRegToReg " << DestReg << " <- " << SrcReg << "\n";
if (DestRC != SrcRC) {
- cerr << "Not yet supported!";
- abort();
+ // Not yet supported!
+ return false;
}
if (DestRC == Alpha::GPRCRegisterClass) {
@@ -151,9 +151,11 @@
} else if (DestRC == Alpha::F8RCRegisterClass) {
BuildMI(MBB, MI, get(Alpha::CPYST), DestReg).addReg(SrcReg).addReg(SrcReg);
} else {
- cerr << "Attempt to copy register that is not GPR or FPR";
- abort();
+ // Attempt to copy register that is not GPR or FPR
+ return false;
}
+
+ return true;
}
void