This fixes failure for some LLVM IR.
Differential Revision: https://reviews.llvm.org/D142791
Register Y = RightHandInst->getOperand(1).getReg();
LLT XTy = MRI.getType(X);
LLT YTy = MRI.getType(Y);
- if (XTy != YTy)
+ if (!XTy.isValid() || XTy != YTy)
return false;
if (!isLegalOrBeforeLegalizer({LogicOpcode, {XTy, YTy}}))
return false;
%logic_op:_(s64) = G_OR %hand1, %hand2
$x0 = COPY %logic_op(s64)
RET_ReallyLR implicit $x0
+
+...
+---
+name: dont_combine_physreg
+tracksRegLiveness: true
+legalized: true
+body: |
+ bb.0:
+ liveins: $w0, $w1
+ ; Post-legalization, we must not crash here.
+ ;
+ ; CHECK-LABEL: name: dont_combine_physreg
+ %x:_(s32) = COPY $w0
+ %y:_(s32) = COPY $w1
+ %logic_op:_(s32) = G_OR %x, %y
+ $w0 = COPY %logic_op(s32)
+ RET_ReallyLR implicit $w0