[PATCH] D76140: [InlineFunction] update attributes during inlining

[Roman Lebedev via Phabricator via cfe-commits]

lebedev.ri added inline comments.


================
Comment at: llvm/lib/Transforms/Utils/InlineFunction.cpp:1172
+      if (NumInstChecked++ > MaxInstCheckedForThrow ||
+          isGuaranteedToTransferExecutionToSuccessor(&I))
+        return true;
----------------
anna wrote:
> Noticed while adding couple more tests, there are 2 bugs here:
> 1. the `isGuaranteedToTransferExecutionToSuccessor` check should be inverted
> 2.  make_range should be until the return instruction - so we do not want `std::prev` on the returnInstruction. what's needed is: `make_range(RVal->getIterator(), RInst->getIterator())`
> This means that from the callsite until (and excluding) the return instruction should be guaranteed to transfer execution to successor - only then we can backward propagate the attribute to that callsite.
Are you aware of `llvm::isValidAssumeForContext()`?
All this (including pitfalls) sound awfully close to that function.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D76140/new/

https://reviews.llvm.org/D76140