[all-commits] [llvm/llvm-project] 713ee3: [Attributor] Use "simplify to constant" in generic...

[Johannes Doerfert via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 713ee3aa77d938b1cb8d3a85968bc5dbe661aafc
      https://github.com/llvm/llvm-project/commit/713ee3aa77d938b1cb8d3a85968bc5dbe661aafc
  Author: Johannes Doerfert <johannes at jdoerfert.de>
  Date:   2020-05-10 (Sun, 10 May 2020)

  Changed paths:
    M llvm/lib/Transforms/IPO/AttributorAttributes.cpp
    M llvm/test/Transforms/Attributor/ArgumentPromotion/X86/attributes.ll
    M llvm/test/Transforms/Attributor/ArgumentPromotion/X86/min-legal-vector-width.ll
    M llvm/test/Transforms/Attributor/ArgumentPromotion/pr32917.ll
    M llvm/test/Transforms/Attributor/IPConstantProp/2009-09-24-byval-ptr.ll
    M llvm/test/Transforms/Attributor/memory_locations.ll
    M llvm/test/Transforms/Attributor/nonnull.ll

  Log Message:
  -----------
  [Attributor] Use "simplify to constant" in genericValueTraversal

As we replace values with constants interprocedurally, we also need to
do this "look-through" step during the generic value traversal or we
would derive properties from replaced values. While this is often not
problematic, it is when we use the "kind" of a value for reasoning,
e.g., accesses to arguments allow `argmemonly`.