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Fix linking of unnamed_addr in functions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189945 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2013-09-04 14:59:03 +00:00
parent 254f75095b
commit 6947f10ec4
3 changed files with 32 additions and 1 deletions
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6
lib/Linker/LinkModules.cpp
View File

@ -756,12 +756,12 @@ bool ModuleLinker::linkGlobalProto(GlobalVariable *SGV) {
// Determine whether linkage of these two globals follows the source
// module's definition or the destination module's definition.
GlobalValue::LinkageTypes NewLinkage = GlobalValue::InternalLinkage;
HasUnnamedAddr = HasUnnamedAddr && DGV->hasUnnamedAddr();
GlobalValue::VisibilityTypes NV;
bool LinkFromSrc = false;
if (getLinkageResult(DGV, SGV, NewLinkage, NV, LinkFromSrc))
return true;
NewVisibility = NV;
HasUnnamedAddr = HasUnnamedAddr && DGV->hasUnnamedAddr();
// If we're not linking from the source, then keep the definition that we
// have.
@ -817,6 +817,7 @@ bool ModuleLinker::linkGlobalProto(GlobalVariable *SGV) {
bool ModuleLinker::linkFunctionProto(Function *SF) {
GlobalValue *DGV = getLinkedToGlobal(SF);
llvm::Optional<GlobalValue::VisibilityTypes> NewVisibility;
bool HasUnnamedAddr = SF->hasUnnamedAddr();
if (DGV) {
GlobalValue::LinkageTypes NewLinkage = GlobalValue::InternalLinkage;
@ -825,11 +826,13 @@ bool ModuleLinker::linkFunctionProto(Function *SF) {
if (getLinkageResult(DGV, SF, NewLinkage, NV, LinkFromSrc))
return true;
NewVisibility = NV;
HasUnnamedAddr = HasUnnamedAddr && DGV->hasUnnamedAddr();
if (!LinkFromSrc) {
// Set calculated linkage
DGV->setLinkage(NewLinkage);
DGV->setVisibility(*NewVisibility);
DGV->setUnnamedAddr(HasUnnamedAddr);
// Make sure to remember this mapping.
ValueMap[SF] = ConstantExpr::getBitCast(DGV, TypeMap.get(SF->getType()));
@ -857,6 +860,7 @@ bool ModuleLinker::linkFunctionProto(Function *SF) {
copyGVAttributes(NewDF, SF);
if (NewVisibility)
NewDF->setVisibility(*NewVisibility);
NewDF->setUnnamedAddr(HasUnnamedAddr);
if (DGV) {
// Any uses of DF need to change to NewDF, with cast.

19
test/Linker/unnamed-addr1-a.ll
View File

@ -6,6 +6,11 @@
@global-b = common unnamed_addr global i32 0
; CHECK-DAG: @global-b = common unnamed_addr global i32 0
define weak void @func-a() { ret void }
; CHECK-DAG: define weak void @func-a() {
define weak void @func-b() unnamed_addr { ret void }
; CHECK-DAG: define weak void @func-b() unnamed_addr {
; Other file has unnamed_addr definition
@global-c = common unnamed_addr global i32 0
; CHECK-DAG: @global-c = common unnamed_addr global i32 0
@ -16,6 +21,13 @@
@global-f = weak global i32 42
; CHECK-DAG: @global-f = global i32 42
declare void @func-c()
; CHECK-DAG: define weak void @func-c() {
define weak void @func-d() { ret void }
; CHECK-DAG: define weak void @func-d() {
define weak void @func-e() unnamed_addr { ret void }
; CHECK-DAG: define weak void @func-e() unnamed_addr {
; Other file has non-unnamed_addr definition
@global-g = common unnamed_addr global i32 0
; CHECK-DAG: @global-g = common global i32 0
@ -25,3 +37,10 @@
; CHECK-DAG: @global-i = global i32 42
@global-j = weak global i32 42
; CHECK-DAG: @global-j = global i32 42
declare void @func-g()
; CHECK-DAG: define weak void @func-g() {
define weak void @func-h() { ret void }
; CHECK-DAG: define weak void @func-h() {
define weak void @func-i() unnamed_addr { ret void }
; CHECK-DAG: define weak void @func-i() {

8
test/Linker/unnamed-addr1-b.ll
View File

@ -6,7 +6,15 @@
@global-e = unnamed_addr global i32 42
@global-f = unnamed_addr global i32 42
define weak void @func-c() unnamed_addr { ret void }
define weak void @func-d() unnamed_addr { ret void }
define weak void @func-e() unnamed_addr { ret void }
@global-g = common global i32 42
@global-h = global i32 42
@global-i = global i32 42
@global-j = global i32 42
define weak void @func-g() { ret void }
define weak void @func-h() { ret void }
define weak void @func-i() { ret void }