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Split GlobalValue into GlobalValue and GlobalObject.

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This allows code to statically accept a Function or a GlobalVariable, but
not an alias. This is already a cleanup by itself IMHO, but the main
reason for it is that it gives a lot more confidence that the refactoring to fix
the design of GlobalAlias is correct. That will be a followup patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208716 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-05-13 18:45:48 +00:00
parent ebfe1f0371
commit 834384bf5b
14 changed files with 130 additions and 58 deletions
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10
lib/Linker/LinkModules.cpp
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@ -495,15 +495,15 @@ static void forceRenaming(GlobalValue *GV, StringRef Name) {
/// a GlobalValue) from the SrcGV to the DestGV.
static void copyGVAttributes(GlobalValue *DestGV, const GlobalValue *SrcGV) {
// Use the maximum alignment, rather than just copying the alignment of SrcGV.
auto *DestGO = dyn_cast<GlobalObject>(DestGV);
unsigned Alignment;
bool IsAlias = isa<GlobalAlias>(DestGV);
if (!IsAlias)
Alignment = std::max(DestGV->getAlignment(), SrcGV->getAlignment());
if (DestGO)
Alignment = std::max(DestGO->getAlignment(), SrcGV->getAlignment());
DestGV->copyAttributesFrom(SrcGV);
if (!IsAlias)
DestGV->setAlignment(Alignment);
if (DestGO)
DestGO->setAlignment(Alignment);
forceRenaming(DestGV, SrcGV->getName());
}