[PATCH] D158510: [InstCombine] Propagate nsw flag when negating

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added inline comments.


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Comment at: llvm/lib/Transforms/InstCombine/InstCombineNegator.cpp:306
     // `freeze` is negatible if its operand is negatible.
-    Value *NegOp = negate(I->getOperand(0), Depth + 1);
+    Value *NegOp = negate(I->getOperand(0), /* IsNSW */ false, Depth + 1);
     if (!NegOp) // Early return.
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Why does freeze kill `nsw`?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D158510/new/

https://reviews.llvm.org/D158510