[PATCH] D95088: [InstCombine] avoid crashing on attribute propagation

Johannes Doerfert via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed Jan 20 14:00:05 PST 2021


jdoerfert accepted this revision.
jdoerfert added a comment.
This revision is now accepted and ready to land.

LGTM, one comment below though.



================
Comment at: llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp:1157
+  NewCI->removeAttributes(AttributeList::ReturnIndex,
+                          AttributeFuncs::typeIncompatible(NewCI->getType()));
   return B.CreateInBoundsGEP(B.getInt8Ty(), Dst, N);
----------------
We could attach (some, if not all) return value attributes to the first operand in order to preserve them. I guess a FIXME would do for now if you don't feel like including this.


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https://reviews.llvm.org/D95088



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