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Apply TBAA Metadata as Suggested by the Book #12

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Apply TBAA Metadata as Suggested by the Book #12

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29 changes: 21 additions & 8 deletions Chapter07/tinylang/lib/CodeGen/CGProcedure.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -114,15 +114,17 @@ void CGProcedure::writeVariable(llvm::BasicBlock *BB,
writeLocalVariable(BB, D, Val);
else if (V->getEnclosingDecl() ==
CGM.getModuleDeclaration()) {
Builder.CreateStore(Val, CGM.getGlobal(D));
llvm::Instruction *Inst = Builder.CreateStore(Val, CGM.getGlobal(D));
CGM.decorateInst(Inst, V->getType());
} else
llvm::report_fatal_error(
"Nested procedures not yet supported");
} else if (auto *FP =
llvm::dyn_cast<FormalParameterDeclaration>(
D)) {
if (FP->isVar()) {
Builder.CreateStore(Val, FormalParams[FP]);
llvm::Instruction *Inst = Builder.CreateStore(Val, FormalParams[FP]);
CGM.decorateInst(Inst, FP->getType());
} else
writeLocalVariable(BB, D, Val);
} else
Expand All @@ -140,7 +142,9 @@ llvm::Value *CGProcedure::readVariable(llvm::BasicBlock *BB,
auto *Global = CGM.getGlobal(D);
if (!LoadVal)
return Global;
return Builder.CreateLoad(mapType(D), Global);
llvm::Instruction *Inst = Builder.CreateLoad(mapType(D), Global);
CGM.decorateInst(Inst, V->getType());
return Inst;
} else
llvm::report_fatal_error(
"Nested procedures not yet supported");
Expand All @@ -150,9 +154,11 @@ llvm::Value *CGProcedure::readVariable(llvm::BasicBlock *BB,
if (FP->isVar()) {
if (!LoadVal)
return FormalParams[FP];
return Builder.CreateLoad(
llvm::Instruction *Inst = Builder.CreateLoad(
mapType(FP)->getPointerElementType(),
FormalParams[FP]);
CGM.decorateInst(Inst, FP->getType());
return Inst;
} else
return readLocalVariable(BB, D);
} else
Expand Down Expand Up @@ -315,8 +321,10 @@ llvm::Value *CGProcedure::emitExpr(Expr *E) {
break;
}
Val = Builder.CreateInBoundsGEP(Val, IdxList);
Val = Builder.CreateLoad(
llvm::Instruction *Inst = Builder.CreateLoad(
Val->getType()->getPointerElementType(), Val);
CGM.decorateInst(Inst, Var->getType());
Val = Inst;
} else if (auto *FieldSel =
llvm::dyn_cast<FieldSelector>(*I)) {
llvm::SmallVector<llvm::Value *, 4> IdxList;
Expand All @@ -331,13 +339,17 @@ llvm::Value *CGProcedure::emitExpr(Expr *E) {
break;
}
Val = Builder.CreateInBoundsGEP(Val, IdxList);
Val = Builder.CreateLoad(
llvm::Instruction *Inst = Builder.CreateLoad(
Val->getType()->getPointerElementType(), Val);
CGM.decorateInst(Inst, Var->getType());
Val = Inst;
} else if (auto *DerefSel =
llvm::dyn_cast<DereferenceSelector>(
*I)) {
Val = Builder.CreateLoad(
llvm::Instruction *Inst = Builder.CreateLoad(
Val->getType()->getPointerElementType(), Val);
CGM.decorateInst(Inst, Var->getType());
Val = Inst;
++I;
} else {
llvm::report_fatal_error("Unsupported selector");
Expand Down Expand Up @@ -390,7 +402,8 @@ void CGProcedure::emitStmt(AssignmentStatement *Stmt) {
if (!IdxList.empty()) {
if (Base->getType()->isPointerTy()) {
Base = Builder.CreateInBoundsGEP(Base, IdxList);
Builder.CreateStore(Val, Base);
llvm::Instruction *Inst = Builder.CreateStore(Val, Base);
CGM.decorateInst(Inst, Desig->getType());
}
else {
llvm::report_fatal_error("should not happen");
Expand Down