File: enum-bounds-check-derived-idx.rs

package info (click to toggle)
rustc-web 1.85.0%2Bdfsg3-1~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,759,988 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,056; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (24 lines) | stat: -rw-r--r-- 519 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
// This test checks an optimization that is not guaranteed to work. This test case should not block
// a future LLVM update.
//@ compile-flags: -O

#![crate_type = "lib"]

pub enum Bar {
    A = 1,
    B = 3,
}

// CHECK-LABEL: @lookup_inc
#[no_mangle]
pub fn lookup_inc(buf: &[u8; 5], f: Bar) -> u8 {
    // CHECK-NOT: panic_bounds_check
    buf[f as usize + 1]
}

// CHECK-LABEL: @lookup_dec
#[no_mangle]
pub fn lookup_dec(buf: &[u8; 5], f: Bar) -> u8 {
    // CHECK-NOT: panic_bounds_check
    buf[f as usize - 1]
}