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#![deny(
missing_docs,
trivial_numeric_casts,
unused_extern_crates,
unstable_features
)]
#![warn(unused_import_braces)]
#![cfg_attr(feature = "clippy", plugin(clippy(conf_file = "../../clippy.toml")))]
#![cfg_attr(feature = "cargo-clippy", allow(clippy::new_without_default))]
#![cfg_attr(
feature = "cargo-clippy",
warn(
clippy::float_arithmetic,
clippy::mut_mut,
clippy::nonminimal_bool,
clippy::map_unwrap_or,
clippy::clippy::print_stdout,
clippy::unicode_not_nfc,
clippy::use_self
)
)]
use cranelift_codegen::isa;
use target_lexicon::Triple;
pub fn builder() -> Result<isa::Builder, &'static str> {
builder_with_options(true)
}
pub fn builder_with_options(infer_native_flags: bool) -> Result<isa::Builder, &'static str> {
let mut isa_builder = isa::lookup(Triple::host()).map_err(|err| match err {
isa::LookupError::SupportDisabled => "support for architecture disabled at compile time",
isa::LookupError::Unsupported => "unsupported architecture",
})?;
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
use cranelift_codegen::settings::Configurable;
if !std::is_x86_feature_detected!("sse2") {
return Err("x86 support requires SSE2");
}
if !infer_native_flags {
return Ok(isa_builder);
}
isa_builder.set("has_sse3", "false").unwrap();
isa_builder.set("has_ssse3", "false").unwrap();
isa_builder.set("has_sse41", "false").unwrap();
isa_builder.set("has_sse42", "false").unwrap();
if std::is_x86_feature_detected!("sse3") {
isa_builder.enable("has_sse3").unwrap();
}
if std::is_x86_feature_detected!("ssse3") {
isa_builder.enable("has_ssse3").unwrap();
}
if std::is_x86_feature_detected!("sse4.1") {
isa_builder.enable("has_sse41").unwrap();
}
if std::is_x86_feature_detected!("sse4.2") {
isa_builder.enable("has_sse42").unwrap();
}
if std::is_x86_feature_detected!("popcnt") {
isa_builder.enable("has_popcnt").unwrap();
}
if std::is_x86_feature_detected!("avx") {
isa_builder.enable("has_avx").unwrap();
}
if std::is_x86_feature_detected!("avx2") {
isa_builder.enable("has_avx2").unwrap();
}
if std::is_x86_feature_detected!("fma") {
isa_builder.enable("has_fma").unwrap();
}
if std::is_x86_feature_detected!("bmi1") {
isa_builder.enable("has_bmi1").unwrap();
}
if std::is_x86_feature_detected!("bmi2") {
isa_builder.enable("has_bmi2").unwrap();
}
if std::is_x86_feature_detected!("avx512bitalg") {
isa_builder.enable("has_avx512bitalg").unwrap();
}
if std::is_x86_feature_detected!("avx512dq") {
isa_builder.enable("has_avx512dq").unwrap();
}
if std::is_x86_feature_detected!("avx512f") {
isa_builder.enable("has_avx512f").unwrap();
}
if std::is_x86_feature_detected!("avx512vl") {
isa_builder.enable("has_avx512vl").unwrap();
}
if std::is_x86_feature_detected!("avx512vbmi") {
isa_builder.enable("has_avx512vbmi").unwrap();
}
if std::is_x86_feature_detected!("lzcnt") {
isa_builder.enable("has_lzcnt").unwrap();
}
}
#[cfg(target_arch = "aarch64")]
{
use cranelift_codegen::settings::Configurable;
if !infer_native_flags {
return Ok(isa_builder);
}
if std::arch::is_aarch64_feature_detected!("lse") {
isa_builder.enable("has_lse").unwrap();
}
if std::arch::is_aarch64_feature_detected!("paca") {
isa_builder.enable("has_pauth").unwrap();
}
if cfg!(target_os = "macos") {
isa_builder.enable("sign_return_address").unwrap();
isa_builder.enable("sign_return_address_with_bkey").unwrap();
}
}
#[cfg(all(target_arch = "s390x", target_os = "linux"))]
{
use cranelift_codegen::settings::Configurable;
if !infer_native_flags {
return Ok(isa_builder);
}
let v = unsafe { libc::getauxval(libc::AT_HWCAP) };
const HWCAP_S390X_VXRS_EXT2: libc::c_ulong = 32768;
if (v & HWCAP_S390X_VXRS_EXT2) != 0 {
isa_builder.enable("has_vxrs_ext2").unwrap();
isa_builder.enable("has_mie2").unwrap();
}
}
drop(&mut isa_builder);
drop(infer_native_flags);
Ok(isa_builder)
}
#[cfg(test)]
mod tests {
use super::builder;
use cranelift_codegen::isa::CallConv;
use cranelift_codegen::settings;
#[test]
fn test() {
if let Ok(isa_builder) = builder() {
let flag_builder = settings::builder();
let isa = isa_builder
.finish(settings::Flags::new(flag_builder))
.unwrap();
if cfg!(all(target_os = "macos", target_arch = "aarch64")) {
assert_eq!(isa.default_call_conv(), CallConv::AppleAarch64);
} else if cfg!(any(unix, target_os = "nebulet")) {
assert_eq!(isa.default_call_conv(), CallConv::SystemV);
} else if cfg!(windows) {
assert_eq!(isa.default_call_conv(), CallConv::WindowsFastcall);
}
if cfg!(target_pointer_width = "64") {
assert_eq!(isa.pointer_bits(), 64);
} else if cfg!(target_pointer_width = "32") {
assert_eq!(isa.pointer_bits(), 32);
} else if cfg!(target_pointer_width = "16") {
assert_eq!(isa.pointer_bits(), 16);
}
}
}
}
pub const VERSION: &str = env!("CARGO_PKG_VERSION");