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

1 files changed, 6 insertions, 4 deletions

diff --git a/lib/Target/ARM/ARMInstrInfo.cpp b/lib/Target/ARM/ARMInstrInfo.cpp
index 7fe3b471f2..839ee6a2c5 100644
--- a/lib/Target/ARM/ARMInstrInfo.cpp
+++ b/lib/Target/ARM/ARMInstrInfo.cpp
@@ -459,14 +459,14 @@ unsigned ARMInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *T
   return 2;
 }
 
-void ARMInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
+bool ARMInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
                                    MachineBasicBlock::iterator I,
                                    unsigned DestReg, unsigned SrcReg,
                                    const TargetRegisterClass *DestRC,
                                    const TargetRegisterClass *SrcRC) const {
   if (DestRC != SrcRC) {
-    cerr << "Not yet supported!";
-    abort();
+    // Not yet supported!
+    return false;
   }
 
   if (DestRC == ARM::GPRRegisterClass) {
@@ -484,7 +484,9 @@ void ARMInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
     AddDefaultPred(BuildMI(MBB, I, get(ARM::FCPYD), DestReg)
                    .addReg(SrcReg));
   else
-    abort();
+    return false;
+  
+  return true;
 }
 
 static const MachineInstrBuilder &ARMInstrAddOperand(MachineInstrBuilder &MIB,