1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#include <llvm/ADT/APFloat.h>
#include <llvm/ADT/APInt.h>
#include "Driver.hh"
#include "LiteralNode.hh"
namespace pcc {
template <>
Value BooleanLiteralNode::CodeGen() {
if (value_ == true) {
return llvm::ConstantInt::getTrue(GlobalLLVMContext);
} else {
return llvm::ConstantInt::getFalse(GlobalLLVMContext);
}
}
template <>
Value CharLiteralNode::CodeGen() {
return llvm::ConstantInt::get(type_->GetLLVMType(), value_, true);
}
template <>
Value IntegerLiteralNode::CodeGen() {
return llvm::ConstantInt::get(type_->GetLLVMType(), value_, true);
}
template <>
Value RealLiteralNode::CodeGen() {
llvm::APFloat value(value_);
return llvm::ConstantFP::get(GlobalLLVMContext, value);
}
StringLiteralNode::StringLiteralNode(Context* context,
std::shared_ptr<Type> type,
std::vector<char> value)
: ExprNode(context)
, value_(value) {
type_ = type;
}
Value StringLiteralNode::CodeGen() {
llvm::IRBuilder<>* builder = context_->GetBuilder();
std::shared_ptr<PointerType> pointer =
std::static_pointer_cast<PointerType>(type_);
llvm::Constant* ConstantString =
llvm::ConstantDataArray::get(GlobalLLVMContext, value_);
llvm::GlobalValue* GlobalString = new llvm::GlobalVariable(
*context_->GetModule(), ConstantString->getType(), true,
llvm::GlobalValue::PrivateLinkage, ConstantString);
GlobalString->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
Value ZeroIndex =
llvm::ConstantInt::get(pointer->GetIndexType()->GetLLVMType(), 0, true);
Value indices[2] = {ZeroIndex, ZeroIndex};
return builder->CreateInBoundsGEP(GlobalString, indices);
}
} // namespace pcc
|
