[PATCH] D49126: [PredicateInfo] Use custom mangling to support ssa_copy with unnamed types.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: efriedma, davide.

This is a workaround and it would be better to fix this generally, but
doing it generally is quite tricky. See https://reviews.llvm.org/D48541 and PR38117.

Doing it in PredicateInfo directly allows us to use the type address to
differentiate different unnamed types, because neither the created
declarations nor the ssa_copy calls should be visible after
PredicateInfo got destroyed.


https://reviews.llvm.org/D49126

Files:
  include/llvm/Transforms/Utils/PredicateInfo.h
  lib/Transforms/Utils/PredicateInfo.cpp
  test/Transforms/NewGVN/pr33305.ll
  test/Transforms/Util/PredicateInfo/unnamed-types.ll

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