throw std::string("ParseFunction: Error reading from buffer.");
if (LinkageType & ~0x3)
throw std::string("Invalid linkage type for Function.");
- Linkage = (GlobalValue::LinkageTypes)LinkageType;
+ switch (LinkageType) {
+ case 0: Linkage = GlobalValue::ExternalLinkage; break;
+ case 1: Linkage = GlobalValue::WeakLinkage; break;
+ case 2: Linkage = GlobalValue::AppendingLinkage; break;
+ case 3: Linkage = GlobalValue::InternalLinkage; break;
+ }
} else {
// We used to only support two linkage models: internal and external
unsigned isInternal;
// VarType Fields: bit0 = isConstant, bit1 = hasInitializer,
// bit2,3 = Linkage, bit4+ = slot#
SlotNo = VarType >> 4;
- Linkage = (GlobalValue::LinkageTypes)((VarType >> 2) & 3);
+ switch ((VarType >> 2) & 3) {
+ case 0: Linkage = GlobalValue::ExternalLinkage; break;
+ case 1: Linkage = GlobalValue::WeakLinkage; break;
+ case 2: Linkage = GlobalValue::AppendingLinkage; break;
+ case 3: Linkage = GlobalValue::InternalLinkage; break;
+ }
} else {
// VarType Fields: bit0 = isConstant, bit1 = hasInitializer,
// bit2 = isInternal, bit3+ = slot#
}
}
+static unsigned getEncodedLinkage(const GlobalValue *GV) {
+ switch (GV->getLinkage()) {
+ default: assert(0 && "Invalid linkage!");
+ case GlobalValue::ExternalLinkage: return 0;
+ case GlobalValue::LinkOnceLinkage: return 1;
+ case GlobalValue::WeakLinkage: return 1;
+ case GlobalValue::AppendingLinkage: return 2;
+ case GlobalValue::InternalLinkage: return 3;
+ }
+}
+
void BytecodeWriter::outputModuleInfoBlock(const Module *M) {
BytecodeBlock ModuleInfoBlock(BytecodeFormat::ModuleGlobalInfo, Out);
// Fields: bit0 = isConstant, bit1 = hasInitializer, bit2,3=Linkage,
// bit4+ = Slot # for type
- unsigned oSlot = ((unsigned)Slot << 4) | ((unsigned)I->getLinkage() << 2) |
+ unsigned oSlot = ((unsigned)Slot << 4) | (getEncodedLinkage(I) << 2) |
(I->hasInitializer() << 1) | I->isConstant();
output_vbr(oSlot, Out);
void BytecodeWriter::outputFunction(const Function *F) {
BytecodeBlock FunctionBlock(BytecodeFormat::Function, Out);
- output_vbr((unsigned)F->getLinkage(), Out);
+ output_vbr(getEncodedLinkage(F), Out);
// Only output the constant pool and other goodies if needed...
if (!F->isExternal()) {