[PATCH] D45023: [GlobalOpt] Implement static evaluation of memcpy intrinsics for const i8 arrays.

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
aemerson added reviewers: Gerolf, ab.

The evaluation of static constructors would fail in the presence of memcpy intrinsics, such as the following code:

  struct c {
  char d[3];
  int e;
  };
  int var = 42;
  c f = {"ab", var};

however we can still evaluate the memcpy as it's copying from a constant i8 array.

rdar://37690940


Repository:
  rL LLVM

https://reviews.llvm.org/D45023

Files:
  lib/Transforms/Utils/Evaluator.cpp
  test/Transforms/GlobalOpt/ctor-eval-memcpy.ll

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