6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-12 13:38:21 +00:00
Code Issues Projects Releases Wiki Activity

Fix linking of unnamed_addr.

Browse Source 
This was regression from r134829. When linking we have to be conservative. If
one of the symbols has a significant address, then the result should have it
too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189935 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2013-09-04 14:05:09 +00:00
parent 0415b1810b
commit 3acfb58b17
2 changed files with 9 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Linker/LinkModules.cpp
View File

@ -746,6 +746,7 @@ bool ModuleLinker::linkAppendingVarProto(GlobalVariable *DstGV,
bool ModuleLinker::linkGlobalProto(GlobalVariable *SGV) {
GlobalValue *DGV = getLinkedToGlobal(SGV);
llvm::Optional<GlobalValue::VisibilityTypes> NewVisibility;
bool HasUnnamedAddr = SGV->hasUnnamedAddr();
if (DGV) {
// Concatenation of appending linkage variables is magic and handled later.
@ -755,6 +756,7 @@ 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))
@ -768,10 +770,11 @@ bool ModuleLinker::linkGlobalProto(GlobalVariable *SGV) {
if (GlobalVariable *DGVar = dyn_cast<GlobalVariable>(DGV))
if (DGVar->isDeclaration() && SGV->isConstant() && !DGVar->isConstant())
DGVar->setConstant(true);
// Set calculated linkage and visibility.
// Set calculated linkage, visibility and unnamed_addr.
DGV->setLinkage(NewLinkage);
DGV->setVisibility(*NewVisibility);
DGV->setUnnamedAddr(HasUnnamedAddr);
// Make sure to remember this mapping.
ValueMap[SGV] = ConstantExpr::getBitCast(DGV,TypeMap.get(SGV->getType()));
@ -797,6 +800,7 @@ bool ModuleLinker::linkGlobalProto(GlobalVariable *SGV) {
copyGVAttributes(NewDGV, SGV);
if (NewVisibility)
NewDGV->setVisibility(*NewVisibility);
NewDGV->setUnnamedAddr(HasUnnamedAddr);
if (DGV) {
DGV->replaceAllUsesWith(ConstantExpr::getBitCast(NewDGV, DGV->getType()));