tree 281e5286dabd1c27d6153b28030a0af073746ece
parent 017cb3b47a463ade4baa5f1322e27e1880f90b8a
author Vedant Kumar <vsk@apple.com> 1547691305 +0000
committer Vedant Kumar <vsk@apple.com> 1547691305 +0000

[MergeFunc] Prevent silent miscompile of vararg functions

The function merging pass miscompiles identical vararg functions. The
forwarding thunk it emits doesn't forward the full variable-length list
of arguments. Disable merging for vararg functions for now.

I've filed llvm.org/PR40345 to track the issue.

rdar://47326238

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351411 91177308-0d34-0410-b5e6-96231b3b80d8