File: unchecked-float-casts.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb11u3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,245,360 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (36 lines) | stat: -rw-r--r-- 820 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
// This file tests that we don't generate any code for saturation when using the
// unchecked intrinsics.

//@ compile-flags: -C opt-level=3
//@ ignore-wasm32 the wasm target is tested in `wasm_casts_*`

#![crate_type = "lib"]

// CHECK-LABEL: @f32_to_u32
#[no_mangle]
pub fn f32_to_u32(x: f32) -> u32 {
    // CHECK: fptoui
    // CHECK-NOT: fcmp
    // CHECK-NOT: icmp
    // CHECK-NOT: select
    unsafe { x.to_int_unchecked() }
}

// CHECK-LABEL: @f32_to_i32
#[no_mangle]
pub fn f32_to_i32(x: f32) -> i32 {
    // CHECK: fptosi
    // CHECK-NOT: fcmp
    // CHECK-NOT: icmp
    // CHECK-NOT: select
    unsafe { x.to_int_unchecked() }
}

#[no_mangle]
pub fn f64_to_u16(x: f64) -> u16 {
    // CHECK: fptoui
    // CHECK-NOT: fcmp
    // CHECK-NOT: icmp
    // CHECK-NOT: select
    unsafe { x.to_int_unchecked() }
}