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Fix linking of shared libraries.

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In shared libraries the plugin can see non-weak declarations that are still
undefined.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226031 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2015-01-14 20:08:46 +00:00
parent 4ade012dd0
commit 0a2caa143f
2 changed files with 9 additions and 1 deletions
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8
test/tools/gold/emit-llvm.ll
View File

@ -24,6 +24,8 @@ target triple = "x86_64-unknown-linux-gnu"
@g7 = extern_weak global i32
; CHECK-DAG: @g7 = extern_weak global i32
@g8 = external global i32
; CHECK: define internal void @f1()
; OPT-NOT: @f1
define hidden void @f1() {
@ -69,6 +71,10 @@ define i32* @f7() {
ret i32* @g7
}
define i32* @f8() {
ret i32* @g8
}
; API: f1 PREVAILING_DEF_IRONLY
; API: f2 PREVAILING_DEF_IRONLY
; API: f3 PREVAILING_DEF_IRONLY_EXP
@ -76,6 +82,8 @@ define i32* @f7() {
; API: f5 PREVAILING_DEF_IRONLY_EXP
; API: f6 PREVAILING_DEF_IRONLY_EXP
; API: f7 PREVAILING_DEF_IRONLY_EXP
; API: f8 PREVAILING_DEF_IRONLY_EXP
; API: g7 UNDEF
; API: g8 UNDEF
; API: g5 PREVAILING_DEF_IRONLY_EXP
; API: g6 PREVAILING_DEF_IRONLY_EXP

2
tools/gold/gold-plugin.cpp
View File

@ -633,7 +633,7 @@ getModuleForFile(LLVMContext &Context, claimed_file &F, raw_fd_ostream *ApiFile,
break;
case LDPR_UNDEF:
if (!GV->hasExternalWeakLinkage()) {
if (!GV->isDeclarationForLinker()) {
assert(GV->hasComdat());
Drop.insert(GV);
}