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Prepare if

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This commit is contained in:
Markus Hauschild
2013-06-01 17:45:16 +02:00
parent 57e39dae03
commit 712cc419ab
1 changed files with 23 additions and 0 deletions
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23
src/AST/CodeGenVisitor.cpp
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@@ -144,6 +144,29 @@ void CodeGenVisitor::visit(FunctionDefinition* e) {
} }
void CodeGenVisitor::visit(IfStatement* e) { void CodeGenVisitor::visit(IfStatement* e) {
value_ = 0;
e->getCond()->accept(this);
llvm::Function* f = builder_->GetInsertBlock()->getParent();
llvm::BasicBlock* thenBB = llvm::BasicBlock::Create(llvm::getGlobalContext(), "then", f);
llvm::BasicBlock* elseBB = llvm::BasicBlock::Create(llvm::getGlobalContext(), "else");
llvm::BasicBlock* mergeBB = llvm::BasicBlock::Create(llvm::getGlobalContext(), "merge");
builder_->CreateCondBr(value_, thenBB, elseBB);
builder_->SetInsertPoint(thenBB);
e->getStmt()->accept(this);
builder_->CreateBr(mergeBB);
f->getBasicBlockList().push_back(elseBB);
builder_->SetInsertPoint(elseBB);
// we cna add an else part here later ...
builder_->CreateBr(mergeBB);
f->getBasicBlockList().push_back(mergeBB);
builder_->SetInsertPoint(mergeBB);
} }
void CodeGenVisitor::visit(ParameterList* e) { void CodeGenVisitor::visit(ParameterList* e) {