Teresa Johnson 801dc0146e [ThinLTO] Import static functions from the same module as caller ...

Summary:
We can sometimes end up with multiple copies of a local function that
have the same GUID in the index. This happens when there are local
functions with the same name that are in different source files with the
same name (but in different directories), and they were compiled in
their own directory so had the same path at compile time.

In this case make sure we import the copy in the caller's module. While
it isn't a correctness problem (the renamed reference which is based on the
module IR hash will be unique since the module must have had an
externally visible function that was imported), importing the wrong copy
will result in lost performance opportunity since it won't be referenced
and inlined.

Reviewers: mehdi_amini

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D28440

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291841 91177308-0d34-0410-b5e6-96231b3b80d8

2017-01-12 22:04:45 +00:00

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X86

[ThinLTO] Import static functions from the same module as caller

2017-01-12 22:04:45 +00:00