Commit Graph

2 Commits

Author SHA1 Message Date
Rafael Espindola
f907a26bc2 Change the .ll syntax for comdats and add a syntactic sugar.
In order to make comdats always explicit in the IR, we decided to make
the syntax a bit more compact for the case of a GlobalObject in a
comdat with the same name.

Just dropping the $name causes problems for

@foo = globabl i32 0, comdat
$bar = comdat ...

and

declare void @foo() comdat
$bar = comdat ...

So the syntax is changed to

@g1 = globabl i32 0, comdat($c1)
@g2 = globabl i32 0, comdat

and

declare void @foo() comdat($c1)
declare void @foo() comdat

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225302 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-06 22:55:16 +00:00
David Majnemer
2869d4800c GlobalDCE: Don't drop any COMDAT members
If we require a single member of a comdat, require all of the other
members as well.

This fixes PR20981.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219191 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-07 07:07:19 +00:00