File: array-optimized.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 (33 lines) | stat: -rw-r--r-- 896 bytes parent folder | download | duplicates (2)
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
//@ compile-flags: -O

#![crate_type = "lib"]

// CHECK-LABEL: @array_copy_1_element
#[no_mangle]
pub fn array_copy_1_element(a: &[u8; 1], p: &mut [u8; 1]) {
    // CHECK-NOT: alloca
    // CHECK: %[[TEMP:.+]] = load i8, ptr %a, align 1
    // CHECK: store i8 %[[TEMP]], ptr %p, align 1
    // CHECK: ret
    *p = *a;
}

// CHECK-LABEL: @array_copy_2_elements
#[no_mangle]
pub fn array_copy_2_elements(a: &[u8; 2], p: &mut [u8; 2]) {
    // CHECK-NOT: alloca
    // CHECK: %[[TEMP:.+]] = load <2 x i8>, ptr %a, align 1
    // CHECK: store <2 x i8> %[[TEMP]], ptr %p, align 1
    // CHECK: ret
    *p = *a;
}

// CHECK-LABEL: @array_copy_4_elements
#[no_mangle]
pub fn array_copy_4_elements(a: &[u8; 4], p: &mut [u8; 4]) {
    // CHECK-NOT: alloca
    // CHECK: %[[TEMP:.+]] = load <4 x i8>, ptr %a, align 1
    // CHECK: store <4 x i8> %[[TEMP]], ptr %p, align 1
    // CHECK: ret
    *p = *a;
}