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Set comdats when lazily linking functions.

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We were setting the comdat when functions were copied in the initial pass, but
not when they were linked only when we found out that they are needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215765 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-08-15 20:17:08 +00:00
parent 9ad3f9b8e1
commit 0549fc2448
3 changed files with 17 additions and 0 deletions
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5
lib/Linker/LinkModules.cpp
View File

@ -546,6 +546,11 @@ Value *ValueMaterializerTy::materializeValueFor(Value *V) {
SF->getLinkage(), SF->getName(), DstM);
copyGVAttributes(DF, SF);
if (Comdat *SC = SF->getComdat()) {
Comdat *DC = DstM->getOrInsertComdat(SC->getName());
DF->setComdat(DC);
}
LazilyLinkFunctions.push_back(SF);
return DF;
}

5
test/Linker/Inputs/comdat9.ll Normal file
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@ -0,0 +1,5 @@
$c = comdat any
@a = alias void ()* @f
define internal void @f() comdat $c {
ret void
}

7
test/Linker/comdat9.ll Normal file
View File

@ -0,0 +1,7 @@
; RUN: llvm-link %s %p/Inputs/comdat9.ll -S -o - | FileCheck %s
; CHECK: $c = comdat any
; CHECK: @a = alias void ()* @f
; CHECK: define internal void @f() comdat $c {
; CHECK: ret void
; CHECK: }