/src/test/codegen/float_math.rs
https://gitlab.com/jianglu/rust · Rust · 60 lines · 31 code · 8 blank · 21 comment · 0 complexity · 0d83f8aba7805fa821ef2196b602175c MD5 · raw file
- // Copyright 2016 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.
- // compile-flags: -C no-prepopulate-passes
- #![crate_type = "lib"]
- #![feature(core_intrinsics)]
- use std::intrinsics::{fadd_fast, fsub_fast, fmul_fast, fdiv_fast, frem_fast};
- // CHECK-LABEL: @add
- #[no_mangle]
- pub fn add(x: f32, y: f32) -> f32 {
- // CHECK: fadd float
- // CHECK-NOT: fast
- x + y
- }
- // CHECK-LABEL: @addition
- #[no_mangle]
- pub fn addition(x: f32, y: f32) -> f32 {
- // CHECK: fadd fast float
- unsafe {
- fadd_fast(x, y)
- }
- }
- // CHECK-LABEL: @subtraction
- #[no_mangle]
- pub fn subtraction(x: f32, y: f32) -> f32 {
- // CHECK: fsub fast float
- unsafe {
- fsub_fast(x, y)
- }
- }
- // CHECK-LABEL: @multiplication
- #[no_mangle]
- pub fn multiplication(x: f32, y: f32) -> f32 {
- // CHECK: fmul fast float
- unsafe {
- fmul_fast(x, y)
- }
- }
- // CHECK-LABEL: @division
- #[no_mangle]
- pub fn division(x: f32, y: f32) -> f32 {
- // CHECK: fdiv fast float
- unsafe {
- fdiv_fast(x, y)
- }
- }