Value* SubtractionExpression::getValue() {
assert(leftExpression != NULL);
assert(rightExpression != NULL);
IRBuilder<>* builder = codegen::getBuilder();
return builder->CreateSub(leftExpression->getValue(), rightExpression->getValue());
}
Value* Op::codeGen(CodeGenContext &context) {
cout << "Creating Op " << op <<endl;
IRBuilder<> *builder = context.currentBuilder();
Value *tape_1;
Value *lshValue = lhs.codeGen(context);
Value *rshValue = rhs.codeGen(context);
switch(op) {
case T_PLUS:
tape_1 = builder->CreateAdd(lshValue,
rshValue, "addtmp");
break;
case T_MINUS:
tape_1 = builder->CreateSub(lshValue,
rshValue, "subtmp");
break;
case T_DIV:
tape_1 = builder->CreateUDiv(lshValue,
rshValue, "divtmp");
break;
case T_MUL:
tape_1 = builder->CreateMul(lshValue,
rshValue, "multmp");
break;
case T_LT:
tape_1 = builder->CreateICmpSLT(lshValue,
rshValue, "lttmp");
break;
case T_GT:
tape_1 = builder->CreateICmpSGT(lshValue,
rshValue, "gttmp");
break;
}
return tape_1;
}
/// compile_minus - Emit code for '-'
void BrainFTraceRecorder::compile_minus(BrainFTraceNode *node,
IRBuilder<>& builder) {
Value *CellValue = builder.CreateLoad(DataPtr);
Constant *One =
ConstantInt::get(IntegerType::getInt8Ty(Header->getContext()), 1);
Value *UpdatedValue = builder.CreateSub(CellValue, One);
builder.CreateStore(UpdatedValue, DataPtr);
if (node->left != (BrainFTraceNode*)~0ULL)
compile_opcode(node->left, builder);
else {
HeaderPHI->addIncoming(DataPtr, builder.GetInsertBlock());
builder.CreateBr(Header);
}
}