llvm.rs

use gccjit::Function;

use crate::context::CodegenCx;

#[cfg(not(feature="master"))]
pub fn intrinsic<'gcc, 'tcx>(name: &str, cx: &CodegenCx<'gcc, 'tcx>) -> Function<'gcc> {
    match name {
        "llvm.x86.xgetbv" => {
            let gcc_name = "__builtin_trap";
            let func = cx.context.get_builtin_function(gcc_name);
            cx.functions.borrow_mut().insert(gcc_name.to_string(), func);
            return func;
        },
        _ => unimplemented!("unsupported LLVM intrinsic {}", name),
    }
}

#[cfg(feature="master")]
pub fn intrinsic<'gcc, 'tcx>(name: &str, cx: &CodegenCx<'gcc, 'tcx>) -> Function<'gcc> {
    let gcc_name = match name {
        "llvm.x86.xgetbv" => "__builtin_ia32_xgetbv",
        // NOTE: this doc specifies the equivalent GCC builtins: http://huonw.github.io/llvmint/llvmint/x86/index.html
        "llvm.sqrt.v2f64" => "__builtin_ia32_sqrtpd",
        // NOTE: this file is generated by https://github.com/GuillaumeGomez/llvmint/blob/master/generate_list.py
        _ => include!("archs.rs"),
    };

    let func = cx.context.get_target_builtin_function(gcc_name);
    cx.functions.borrow_mut().insert(gcc_name.to_string(), func);
    func
}