[PATCH] D64258: [InferFuncAttributes] extend 'dereferenceable' attribute based on loads

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 208999.
spatel marked 3 inline comments as done.
spatel added a comment.

Patch updated:

1. Allow stores to have the same inferences as loads. This exposed more clang test failures, so those diffs are included.
2. Don't infer anything from volatile (non-simple) memory accesses.
3. There was a bug in how we dealt isGuaranteedToTransferExecutionToSuccessor(), so added an assert and a test with a function call to verify that.
4. Added code/test for replacing DereferenceableOrNull attribute.
5. Added FIXME comment to indicate that this pass should be subsumed by Attributor.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64258/new/

https://reviews.llvm.org/D64258

Files:
  clang/test/CodeGen/ms-intrinsics.c
  clang/test/CodeGen/ms-x86-intrinsics.c
  clang/test/CodeGen/systemz-inline-asm.c
  clang/test/CodeGenOpenCL/kernels-have-spir-cc-by-default.cl
  llvm/lib/Transforms/IPO/InferFunctionAttrs.cpp
  llvm/test/CodeGen/AMDGPU/inline-attr.ll
  llvm/test/Transforms/InferFunctionAttrs/dereferenceable.ll

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