Simplify check that optional def is there and is CPSR.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141602 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/Thumb2ITBlockPass.cpp b/lib/Target/ARM/Thumb2ITBlockPass.cpp
index 2bf99bf..b627400 100644
--- a/lib/Target/ARM/Thumb2ITBlockPass.cpp
+++ b/lib/Target/ARM/Thumb2ITBlockPass.cpp
@@ -140,11 +140,10 @@
// rsb r1, 0
// rsb r2, 0
//
- //
- for (unsigned I = 0, E = MI->getNumOperands(); I != E; ++I)
- if (MI->getOperand(I).isReg() && MI->getOperand(I).getReg() == ARM::CPSR &&
- MI->getOperand(I).isDef())
- return false;
+ const MCInstrDesc &MCID = MI->getDesc();
+ if (MCID.hasOptionalDef() &&
+ MI->getOperand(MCID.getNumOperands() - 1).getReg() == ARM::CPSR)
+ return false;
// Then peek at the next instruction to see if it's predicated on CC or OCC.
// If not, then there is nothing to be gained by moving the copy.
