ftomassetti / kllvm Goto Github PK

I got this library working with printing String literals, but I can't seem to get it to print floating point numbers. Delimiting them with %f leads to 0.000000 no matter the contents of the actual constant, and %d just gives me jibberish nothing close to the actual value.

This is the code that I have

val EXIT_CODE_OK = 0
val STRING_TYPE = Pointer(I8Type)

val module = ModuleBuilder()
val mainFunction = module.createMainFunction()

module.addDeclaration(FunctionDeclaration("printf", I32Type, listOf(STRING_TYPE), varargs = true))

val okBlock = mainFunction.entryBlock()

val num = 2.0
val numConst = FloatConst(num, FloatType)

okBlock.addInstruction(Printf(mainFunction.stringConstForContent("%f\n").reference(), numConst))

okBlock.addInstruction(ReturnInt(EXIT_CODE_OK))
println(module.IRCode())

I found this library for your reddit thread, and decided to implement it into a toy language that I'm in the process of making. I was able to make it handle the printing of string literals, but when I tried to abstract it a bit more, I found that it was having trouble emitting code that printed the contents of variables.

My code can be found at https://github.com/Redrield/ChocoLang/blob/experimental/src/main/kotlin/com/redrield/chocolang/codegen/LLVMIRGenerator.kt#L70 (That line is more associated with defining the variables).

I'm not sure if this is user error of if it's a bug in the API, but I wasn't really able to find any documentation past glances in the source, and from what I found that should work.