#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/system_error.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Transforms/Utils/GlobalStatus.h"
using namespace llvm;
LTOModule::LTOModule(llvm::Module *m, llvm::TargetMachine *t)
TargetMachine *target = march->createTargetMachine(TripleStr, CPU, FeatureStr,
options);
+ m->MaterializeAllPermanently();
+
LTOModule *Ret = new LTOModule(m.take(), target);
if (Ret->parseSymbols(errMsg)) {
delete Ret;
addDefinedSymbol(f, true);
}
+static bool canBeHidden(const GlobalValue *GV) {
+ GlobalValue::LinkageTypes L = GV->getLinkage();
+
+ if (L != GlobalValue::LinkOnceODRLinkage)
+ return false;
+
+ if (GV->hasUnnamedAddr())
+ return true;
+
+ GlobalStatus GS;
+ if (GlobalStatus::analyzeGlobal(GV, GS))
+ return false;
+
+ return !GS.IsCompared;
+}
+
/// addDefinedSymbol - Add a defined symbol to the list.
void LTOModule::addDefinedSymbol(const GlobalValue *def, bool isFunction) {
// ignore all llvm.* symbols
// string is owned by _defines
SmallString<64> Buffer;
- _mangler.getNameWithPrefix(Buffer, def, false);
+ _mangler.getNameWithPrefix(Buffer, def);
// set alignment part log2() can have rounding errors
uint32_t align = def->getAlignment();
attr |= LTO_SYMBOL_SCOPE_HIDDEN;
else if (def->hasProtectedVisibility())
attr |= LTO_SYMBOL_SCOPE_PROTECTED;
+ else if (canBeHidden(def))
+ attr |= LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN;
else if (def->hasExternalLinkage() || def->hasWeakLinkage() ||
def->hasLinkOnceLinkage() || def->hasCommonLinkage() ||
def->hasLinkerPrivateWeakLinkage())
attr |= LTO_SYMBOL_SCOPE_DEFAULT;
- else if (def->hasLinkOnceODRAutoHideLinkage())
- attr |= LTO_SYMBOL_SCOPE_DEFAULT_CAN_BE_HIDDEN;
else
attr |= LTO_SYMBOL_SCOPE_INTERNAL;
return;
SmallString<64> name;
- _mangler.getNameWithPrefix(name, decl, false);
+ _mangler.getNameWithPrefix(name, decl);
StringMap<NameAndAttributes>::value_type &entry =
_undefines.GetOrCreateValue(name);