mirror of https://github.com/rust-lang/rust
19 lines
480 B
Rust
19 lines
480 B
Rust
// This is a test for optimal Ord trait implementation for bool.
|
|
// See <https://github.com/rust-lang/rust/issues/66780> for more info.
|
|
|
|
//@ compile-flags: -C opt-level=3
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
use std::cmp::Ordering;
|
|
|
|
// CHECK-LABEL: @cmp_bool
|
|
#[no_mangle]
|
|
pub fn cmp_bool(a: bool, b: bool) -> Ordering {
|
|
// LLVM 10 produces (zext a) + (sext b), but the final lowering is (zext a) - (zext b).
|
|
// CHECK: zext i1
|
|
// CHECK: {{z|s}}ext i1
|
|
// CHECK: {{sub|add}} nsw
|
|
a.cmp(&b)
|
|
}
|