[PATCH] D43708: [DAE] don't remove args of musttail target/caller

[Fedor Indutny via Phabricator via llvm-commits]

indutny created this revision.
indutny added a reviewer: aprantl.

`musttail` requires identical signatures of caller and callee. Removing
arguments breaks `musttail` semantics.

PR36441


Repository:
  rL LLVM

https://reviews.llvm.org/D43708

Files:
  lib/Transforms/IPO/DeadArgumentElimination.cpp
  test/Transforms/DeadArgElim/musttail-caller.ll

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