[all-commits] [llvm/llvm-project] 2a1b1f: [GVN] Store source element type for GEP expressions

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2a1b1f1b1be86732ff345c6f6dbad7c64743a0d5
      https://github.com/llvm/llvm-project/commit/2a1b1f1b1be86732ff345c6f6dbad7c64743a0d5
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-02-11 (Fri, 11 Feb 2022)

  Changed paths:
    M llvm/lib/Transforms/Scalar/GVN.cpp
    A llvm/test/Transforms/GVN/opaque-ptr.ll

  Log Message:
  -----------
  [GVN] Store source element type for GEP expressions

To avoid incorrectly merging GEPs with different source types
under opaque pointers.

To avoid increasing the Expression structure size, this reuses the
existing type member. The code does not rely on this to be the
expression result type, it's only used as a disambiguator.