[PATCH] D124158: [Clang][Attr] Skip adding noundef attribute to arguments when function has convergent attribute

krishna chaitanya sankisa via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Wed Apr 27 03:21:18 PDT 2022


skc7 added inline comments.


================
Comment at: llvm/test/Transforms/SimplifyCFG/tautological-conditional-branch-convergent-noundef.ll:26
+  %i3 = phi double [%i2, %bb2], [undef, %bb1] 
+  %i4 = call noundef double @two(double %i3, i1 %i1) 
+  ret void
----------------
skc7 wrote:
> arsenm wrote:
> > Aren't the cases with defined handling of undef lanes still defined for the result?
> ret double %i4? 
Updated patch to skip adding noundef attribute to return types aswell


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D124158/new/

https://reviews.llvm.org/D124158



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