crates/intrinsic-test/src/arm/compile.rs

use crate::common::compile_c::CompilationCommandBuilder;
use crate::common::gen_c::compile_c_programs;

pub fn compile_c_arm(
    intrinsics_name_list: &Vec<String>,
    compiler: &str,
    target: &str,
    cxx_toolchain_dir: Option<&str>,
) -> bool {
    // -ffp-contract=off emulates Rust's approach of not fusing separate mul-add operations
    let mut command = CompilationCommandBuilder::new()
        .add_arch_flags(vec!["armv8.6-a", "crypto", "crc", "dotprod", "fp16"])
        .set_compiler(compiler)
        .set_target(target)
        .set_opt_level("2")
        .set_cxx_toolchain_dir(cxx_toolchain_dir)
        .set_project_root("c_programs")
        .add_extra_flags(vec!["-ffp-contract=off", "-Wno-narrowing"]);

    if !target.contains("v7") {
        command = command.add_arch_flags(vec!["faminmax", "lut", "sha3"]);
    }

    /*
     * clang++ cannot link an aarch64_be object file, so we invoke
     * aarch64_be-unknown-linux-gnu's C++ linker. This ensures that we
     * are testing the intrinsics against LLVM.
     *
     * Note: setting `--sysroot=<...>` which is the obvious thing to do
     * does not work as it gets caught up with `#include_next <stdlib.h>`
     * not existing...
     */
    if target.contains("aarch64_be") {
        command = command
            .set_linker(
                cxx_toolchain_dir.unwrap_or("").to_string() + "/bin/aarch64_be-none-linux-gnu-g++",
            )
            .set_include_paths(vec![
                "/include",
                "/aarch64_be-none-linux-gnu/include",
                "/aarch64_be-none-linux-gnu/include/c++/14.2.1",
                "/aarch64_be-none-linux-gnu/include/c++/14.2.1/aarch64_be-none-linux-gnu",
                "/aarch64_be-none-linux-gnu/include/c++/14.2.1/backward",
                "/aarch64_be-none-linux-gnu/libc/usr/include",
            ]);
    }

    if !compiler.contains("clang") {
        command = command.add_extra_flag("-flax-vector-conversions");
    }

    let compiler_commands = intrinsics_name_list
        .iter()
        .map(|intrinsic_name| {
            command
                .clone()
                .set_input_name(intrinsic_name)
                .set_output_name(intrinsic_name)
                .to_string()
        })
        .collect::<Vec<_>>();

    compile_c_programs(&compiler_commands)
}