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Use typed gep in classes.cpp (#4091)

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This logic should be merge with toir.cpp:visit(TypeidExp *e)
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Nicholas Wilson 2022-09-01 17:15:13 +08:00 • committed by GitHub
parent f2155c6dd9
commit fc71e6a937
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1 changed files with 8 additions and 4 deletions
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12
gen/classes.cpp
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@ -409,7 +409,8 @@ LLValue *DtoVirtualFunctionPointer(DValue *inst, FuncDeclaration *fdecl) {
// sanity checks // sanity checks
assert(fdecl->isVirtual()); assert(fdecl->isVirtual());
assert(!fdecl->isFinalFunc()); assert(!fdecl->isFinalFunc());
assert(inst->type->toBasetype()->ty == TY::Tclass); TypeClass * tc = inst->type->toBasetype()->isTypeClass();
assert(tc);
// slot 0 is always ClassInfo/Interface* unless it is a CPP class // slot 0 is always ClassInfo/Interface* unless it is a CPP class
assert(fdecl->vtblIndex > 0 || assert(fdecl->vtblIndex > 0 ||
(fdecl->vtblIndex == 0 && (fdecl->vtblIndex == 0 &&
@ -419,15 +420,18 @@ LLValue *DtoVirtualFunctionPointer(DValue *inst, FuncDeclaration *fdecl) {
LLValue *vthis = DtoRVal(inst); LLValue *vthis = DtoRVal(inst);
IF_LOG Logger::cout() << "vthis: " << *vthis << '\n'; IF_LOG Logger::cout() << "vthis: " << *vthis << '\n';
IrClass * irc = getIrAggr(tc->sym, true);
LLValue *funcval = vthis; LLValue *funcval = vthis;
// get the vtbl for objects // get the vtbl for objects
funcval = DtoGEP(funcval, 0u, 0); llvm::GlobalVariable* vtblsym = irc->getVtblSymbol();
funcval = DtoGEP(irc->getLLStructType(), funcval, 0u, 0);
// load vtbl ptr // load vtbl ptr
funcval = DtoLoad(funcval); funcval = DtoLoad(vtblsym->getType(), funcval);
// index vtbl // index vtbl
const std::string name = fdecl->toChars(); const std::string name = fdecl->toChars();
const auto vtblname = name + "@vtbl"; const auto vtblname = name + "@vtbl";
funcval = DtoGEP(funcval, 0, fdecl->vtblIndex, vtblname.c_str()); funcval = DtoGEP(vtblsym->getValueType(),
funcval, 0, fdecl->vtblIndex, vtblname.c_str());
// load opaque pointer // load opaque pointer
funcval = DtoAlignedLoad(getVoidPtrType(), funcval); funcval = DtoAlignedLoad(getVoidPtrType(), funcval);