[llvm] [LIR][SCEVExpander] Restore original flags when aborting transform (PR #82362)

[Nikita Popov via llvm-commits]

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@@ -43,6 +43,37 @@ cl::opt<unsigned> llvm::SCEVCheapExpansionBudget(
 
 using namespace PatternMatch;
 
+PoisonFlags::PoisonFlags(const Instruction *I) {
+  NUW = false;
+  NSW = false;
+  Exact = false;
+  Disjoint = false;
+  NNeg = false;
+  if (auto *OBO = dyn_cast<OverflowingBinaryOperator>(I)) {
+    NUW = OBO->hasNoUnsignedWrap();
+    NSW = OBO->hasNoUnsignedWrap();
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nikic wrote:

Indeed! Thanks for catching it.

https://github.com/llvm/llvm-project/pull/82362