Kite Programming Language

The Kite Compiler: part 2 of many

Written by Mooneer Salem on Friday 14th of May, 2010 in General

This week, I worked some more on learning how LLVM works. Ive created basic method and constant value classes to represent those values in the AST, and wrote a test app to ensure this works. Im happy to tell you all that I have some initial success doing this. :)

Sample application:

using namespace kite::parse_tree;

int main (int argc, char * const argv[])
    // TODO: kite compiler driver.
    ConstantValue<double> *constant = new ConstantValue<double>(42.0);
    MethodValue *method = new MethodValue("life_universe_everything");
    CompilerState *state = new CompilerState();
    LLVMContext &context = getGlobalContext();
    state->push_module(new Module("test_module", context));
    Value *v = method->codegen(state);
    Module *mod = state->pop_module();
    ExecutionEngine *engine = EngineBuilder(mod).create();
    void *fptr = engine->getPointerToFunction(static_cast<Function*>(v));
    double (*FP)() = (double (*)())(intptr_t)fptr;
    std::cout << "Evaluates to: " << (*FP)() << std::endl;
    return 0;


[Session started at 2010-05-14 22:18:51 -0700.]
GNU gdb 6.3.50-20050815 (Apple version gdb-1461.2) (Fri Mar  5 04:43:10 UTC 2010)
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Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys000
Loading program into debugger…
sharedlibrary apply-load-rules all
Program loaded.
[Switching to process 19016]
Evaluates to: 42
; ModuleID = 'test_module'

define double @life_universe_everything() {
  ret double 4.200000e+01

Debugger stopped.
Program exited with status value:0.

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