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| author | Hans Wennborg <hans@hanshq.net> | 2017-09-14 00:40:14 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2017-09-14 00:40:14 +0000 |
| commit | ae050afeb9b15d98b6a6b11de28431eee2bb0857 (patch) | |
| tree | 24b945505bbc59b3af348d8b6a7a5cf84a2d7a24 /llvm/lib/Transforms/Utils/SimplifyIndVar.cpp | |
| parent | 3568319679b295696fd1b76b9c4ec206496a0c8c (diff) | |
| download | bcm5719-llvm-ae050afeb9b15d98b6a6b11de28431eee2bb0857.tar.gz bcm5719-llvm-ae050afeb9b15d98b6a6b11de28431eee2bb0857.zip | |
Revert r313157 "ThinLTO: Correctly follow aliasee references when dead stripping."
This broke Chromium's CFI build; see crbug.com/765004.
> We were previously handling aliases during dead stripping by adding
> the aliased global's "original name" GUID to the worklist. This will
> lead to incorrect behaviour if the global has local linkage because
> the original name GUID will not correspond to the global's GUID in
> the summary.
>
> Because an alias is just another name for the global that it
> references, there is no need to mark the referenced global as used,
> or to follow references from any other copies of the global. So all
> we need to do is to follow references from the aliasee's summary
> instead of the alias.
>
> Differential Revision: https://reviews.llvm.org/D37789
llvm-svn: 313222
Diffstat (limited to 'llvm/lib/Transforms/Utils/SimplifyIndVar.cpp')
0 files changed, 0 insertions, 0 deletions
