[PATCH] D116952: [ConstantFolding] Flush folded denormals to zero when using fastmath

[Sam Elliott via Phabricator via llvm-commits]

lenary added inline comments.


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Comment at: llvm/lib/Analysis/ConstantFolding.cpp:1007
+      /// If folding produces a floating point denormal, check whether
+      /// it should be forced to zero.
+      if (CFP->getValueAPF().isDenormal()) {
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You should probably also explain that the `return nullptr` means if you don't have a TTI, you are explicitly preventing any constant folding of operations that produce denormals, rather than continuing to fold to the denormal value.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D116952/new/

https://reviews.llvm.org/D116952