[LLVMdev] Make a comparation with IR builder
Manuele Conti
manuele.conti at sirius-es.it
Fri Jan 11 00:26:14 PST 2013
Hi All,
I'm writing a code generation with my compiler. I read sever example and
documentation but I did understand what I make wrong.
What I try to do is a compare a local variable with a constant.
But when I create a ICMP instruction I get that instruction are not of
same type.
I'm using llvm by svn repository updated at two week ago.
The code that I try to generation is something like:
if varInt = 1 then
varInt := 10;
end_if;
This is my code:
void *visit(integer_c *symbol) {
int64_t value = GET_CVALUE(int64, symbol);
if (typeid(*currentType) == typeid(get_datatype_info_c::bool_type_name)) {
std::cout << "Creating integer: " << value << std::endl;
return (void *)ConstantInt::get(Type::getInt1Ty(getGlobalContext()), value, false);
}
return (void *)ConstantInt::get(Type::getInt16Ty(getGlobalContext()), value, false);
}
void *visit(symbolic_variable_c *symbol) {
std::string varName;
AllocaInst *alloc;
varName = get_var_name_c::get_name(symbol->var_name)->value;
alloc = locals[varName];
return (void *)alloc;
}
void *visit(equ_expression_c *symbol) {
Value *lValue;
Value *rValue;
lValue = (Value *)symbol->l_exp->accept(*this);
rValue = (Value *)symbol->r_exp->accept(*this);
return Builder.CreateICmpEQ (lValue, rValue, "cond");
}
Cheers,
Manuele
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