diff options
| -rw-r--r-- | lib/Target/X86/X86ISelDAGToDAG.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp index deb197cadd..bf08dd8c18 100644 --- a/lib/Target/X86/X86ISelDAGToDAG.cpp +++ b/lib/Target/X86/X86ISelDAGToDAG.cpp @@ -491,13 +491,15 @@ void X86DAGToDAGISel::InstructionSelectBasicBlock(SelectionDAG &DAG) { do { for (MachineBasicBlock::iterator I = MBBI->begin(), E = MBBI->end(); !ContainsFPCode && I != E; ++I) { - for (unsigned op = 0, e = I->getNumOperands(); op != e; ++op) { - if (I->getOperand(op).isRegister() && I->getOperand(op).isDef() && - MRegisterInfo::isVirtualRegister(I->getOperand(op).getReg()) && - RegMap->getRegClass(I->getOperand(0).getReg()) == + if (I->getNumOperands() != 0 && I->getOperand(0).isRegister()) { + for (unsigned op = 0, e = I->getNumOperands(); op != e; ++op) { + if (I->getOperand(op).isRegister() && I->getOperand(op).isDef() && + MRegisterInfo::isVirtualRegister(I->getOperand(op).getReg()) && + RegMap->getRegClass(I->getOperand(0).getReg()) == X86::RFPRegisterClass) { - ContainsFPCode = true; - break; + ContainsFPCode = true; + break; + } } } } |