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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![crate_name = "rustc_platform_intrinsics"]
#![unstable(feature = "rustc_private", issue = "27812")]
#![crate_type = "dylib"]
#![crate_type = "rlib"]
#![feature(staged_api, rustc_private)]
extern crate rustc_llvm as llvm;
extern crate rustc;
use rustc::middle::ty;
pub struct Intrinsic {
pub inputs: Vec<Type>,
pub output: Type,
pub definition: IntrinsicDef,
}
#[derive(Clone, Hash, Eq, PartialEq)]
pub enum Type {
Void,
Integer(/* signed */ bool, u8, /* llvm width */ u8),
Float(u8),
Pointer(Box<Type>, Option<Box<Type>>, /* const */ bool),
Vector(Box<Type>, Option<Box<Type>>, u8),
Aggregate(bool, Vec<Type>),
}
pub enum IntrinsicDef {
Named(&'static str),
}
fn i(width: u8) -> Type { Type::Integer(true, width, width) }
fn i_(width: u8, llvm_width: u8) -> Type { Type::Integer(true, width, llvm_width) }
fn u(width: u8) -> Type { Type::Integer(false, width, width) }
#[allow(dead_code)]
fn u_(width: u8, llvm_width: u8) -> Type { Type::Integer(false, width, llvm_width) }
fn f(width: u8) -> Type { Type::Float(width) }
fn v(x: Type, length: u8) -> Type { Type::Vector(Box::new(x), None, length) }
fn v_(x: Type, bitcast: Type, length: u8) -> Type {
Type::Vector(Box::new(x), Some(Box::new(bitcast)), length)
}
fn agg(flatten: bool, types: Vec<Type>) -> Type {
Type::Aggregate(flatten, types)
}
fn p(const_: bool, elem: Type, llvm_elem: Option<Type>) -> Type {
Type::Pointer(Box::new(elem), llvm_elem.map(Box::new), const_)
}
fn void() -> Type {
Type::Void
}
mod x86;
mod arm;
mod aarch64;
impl Intrinsic {
pub fn find<'tcx>(tcx: &ty::ctxt<'tcx>, name: &str) -> Option<Intrinsic> {
if name.starts_with("x86_") {
x86::find(tcx, name)
} else if name.starts_with("arm_") {
arm::find(tcx, name)
} else if name.starts_with("aarch64_") {
aarch64::find(tcx, name)
} else {
None
}
}
}
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