As suggested by Eli Friedman, instead of aborting if an overflow check
uses something other than SETEQ or SETNE, simply do not apply the
optimization.
Differential Revision: https://reviews.llvm.org/D39147
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319837
91177308-0d34-0410-b5e6-
96231b3b80d8
// Optimize {s|u}{add|sub|mul}.with.overflow feeding into a branch
// instruction.
- if (isOverflowIntrOpRes(LHS) && isOneConstant(RHS)) {
- assert((CC == ISD::SETEQ || CC == ISD::SETNE) &&
- "Unexpected condition code.");
+ if (isOverflowIntrOpRes(LHS) && isOneConstant(RHS) &&
+ (CC == ISD::SETEQ || CC == ISD::SETNE)) {
// Only lower legal XALUO ops.
if (!DAG.getTargetLoweringInfo().isTypeLegal(LHS->getValueType(0)))
return SDValue();