edlc_codegen_cranelift 0.2.16

Cranelift codegen backend for the EDL compiler
Documentation 
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/*
 *     EDLc, a compiler for the EDL programming language.
 *     Copyright (C) 2026  Adrian Paskert
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Affero General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Affero General Public License for more details.
 *
 *     You should have received a copy of the GNU Affero General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

use edlc_core::prelude::{CompilerError, DebugInformation, EdlCompiler, FromFunction, FunctionBinding, MirError, MirPhase, SourceInfo, TrapInfo};
use cranelift_codegen::ir::condcodes::IntCC;
use cranelift_codegen::ir::{InstBuilder, TrapCode};
use edlc_core::inline_code;
use edlc_core::prelude::mir_backend::CodeGen;
use edlc_core::prelude::mir_expr::mir_call::MirCall;
use edlc_core::prelude::mir_expr::{MirExprId, MirFlowGraph, MirLoc, MirValue};
use edlc_core::prelude::mir_funcs::CallSrc;
use crate::codegen::FunctionTranslator;
use crate::compiler::integer_math::*;
use crate::compiler::JIT;
use crate::jit_panic;

impl<Runtime> JIT<Runtime> {
    pub fn load_bool_math(&mut self, compiler: &mut EdlCompiler) -> Result<(), CompilerError> {
        impl_binop!(self, compiler,
            bool::and from "core::And" -> band; |lhs, rhs| { (lhs && rhs) }
            bool::or from "core::Or" -> bor; |lhs, rhs| { (lhs || rhs) }
            bool::xor from "core::Xor" -> bxor; |lhs, rhs| { (lhs ^ rhs) }

            bool::and_assign from "core::AndAssign" -> band; |lhs, rhs| { (lhs && rhs) }
            bool::or_assign from "core::OrAssign" -> bor; |lhs, rhs| { (lhs || rhs) }
            bool::xor_assign from "core::XorAssign" -> bxor; |lhs, rhs| { (lhs ^ rhs) }
        );

        impl_binop!(self, compiler,
            impl ["core::PartialEq"]<bool, bool> for bool {
                fn partial_eq(builder, lhs, rhs: bool) -> bool {
                    { builder.icmp(IntCC::Equal, lhs, rhs) }
                }; { (lhs == rhs) }
            }
            impl ["core::Eq"]<bool, bool> for bool {
                fn eq(builder, lhs, rhs: bool) -> bool {
                    { builder.icmp(IntCC::Equal, lhs, rhs) }
                }; { (lhs == rhs) }
            }
        );

        impl_binop!(self, compiler,
            impl ["core::Not"]<bool> for bool {
                fn not(builder, val) -> bool {
                    { 
                        builder.icmp_imm(IntCC::Equal, val, 0)
                    }
                }; { (!val) }
            }
        );

        Ok(())
    }
}


#[derive(Clone, Copy)]
struct AssertCodegen;

impl<Runtime> CodeGen<JIT<Runtime>> for AssertCodegen {
    fn code_gen(
        &self,
        backend: &mut FunctionTranslator<Runtime>,
        type_reg: &mut MirPhase,
        _cfg: &MirFlowGraph,
        call: &MirCall,
        _target: Option<&MirValue>,
        _call_src: &CallSrc,
    ) -> Result<(), MirError<JIT<Runtime>>> {
        assert_eq!(call.args.len(), 1);
        let input = backend
            .layout
            .load_pod(
                &call.args[0],
                &backend.ir_values,
                &mut backend.builder,
                &type_reg.types,
            ).unwrap();
        backend.builder
            .ins()
            .trapz(input, TrapCode::unwrap_user(13));
        Ok(())
    }

    fn debug_info(
        &self,
        info: &mut DebugInformation,
        loc: &MirLoc,
    ) {
        info.insert_trap_info(loc, TrapInfo::AssertionFailed);
    }
}

impl<Runtime> JIT<Runtime> {
    pub fn load_assert(&mut self, compiler: &mut EdlCompiler) -> Result<(), CompilerError> {
        compiler.change_current_module(&vec!["core"].into());

        let gen = AssertCodegen;
        let f = compiler.parse_fn_signature(inline_code!(r#"
        /// Asserts that the input condition is met.
        /// If not, a panic is invoked.
        /// This can happen at runtime, or at compile time, depending on when the assertion value
        /// is present.
        ?comptime fn assert(val: bool)
        "#))?;

        let intr = "std_assert";
        let func = self.func_reg.borrow_mut().register_intrinsic(
            compiler.get_func_instance(f, inline_code!("<>"), None)?,
            gen,
            true,
            &mut compiler.mir_phase.types,
            &mut compiler.phase.types,
            intr,
        )?;

        extern "C" fn assert(val: bool) {
            if !val {
                jit_panic!("explicit assertion failed!")
            }
        }
        let binding = FunctionBinding::from_function(assert as extern "C" fn(val: bool));
        self.insert_function(intr.to_string(), &func, binding);
        Ok(())
    }
}