diff options
| -rw-r--r-- | lib/Target/SparcV9/SparcV9CodeEmitter.cpp | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/Target/SparcV9/SparcV9CodeEmitter.cpp b/lib/Target/SparcV9/SparcV9CodeEmitter.cpp index 7759874ce9..89e0a5db86 100644 --- a/lib/Target/SparcV9/SparcV9CodeEmitter.cpp +++ b/lib/Target/SparcV9/SparcV9CodeEmitter.cpp @@ -292,7 +292,18 @@ void SparcV9CodeEmitter::emitBasicBlock(MachineBasicBlock &MBB) { currBB = MBB.getBasicBlock(); BBLocations[currBB] = MCE.getCurrentPCValue(); for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end(); I != E; ++I) - emitWord(getBinaryCodeForInstr(*I)); + if (I->getOpcode() != V9::RDCCR) { + emitWord(getBinaryCodeForInstr(*I)); + } else { + // FIXME: The tblgen produced code emitter cannot deal with the fact that + // machine operand #0 of the RDCCR instruction should be ignored. This is + // really a bug in the representation of the RDCCR instruction (which has + // no need to explicitly represent the CCR dest), but we hack around it + // here. + unsigned RegNo = getMachineOpValue(*I, I->getOperand(1)); + RegNo &= (1<<5)-1; + emitWord((RegNo << 25) | 2168487936U); + } } |