mirror of https://github.com/rust-lang/rust.git
29 lines
836 B
Rust
29 lines
836 B
Rust
//@ revisions: DEBUG OPTIM
|
|
//@ [DEBUG] compile-flags: -C opt-level=0
|
|
//@ [OPTIM] compile-flags: -C opt-level=3
|
|
//@ compile-flags: -C no-prepopulate-passes
|
|
//@ min-llvm-version: 20
|
|
|
|
#![crate_type = "lib"]
|
|
#![feature(core_intrinsics)]
|
|
|
|
use std::intrinsics::three_way_compare;
|
|
|
|
#[no_mangle]
|
|
// CHECK-LABEL: @signed_cmp
|
|
// CHECK-SAME: (i16{{.*}} %a, i16{{.*}} %b)
|
|
pub fn signed_cmp(a: i16, b: i16) -> std::cmp::Ordering {
|
|
// CHECK: %[[CMP:.+]] = call i8 @llvm.scmp.i8.i16(i16 %a, i16 %b)
|
|
// CHECK-NEXT: ret i8 %[[CMP]]
|
|
three_way_compare(a, b)
|
|
}
|
|
|
|
#[no_mangle]
|
|
// CHECK-LABEL: @unsigned_cmp
|
|
// CHECK-SAME: (i16{{.*}} %a, i16{{.*}} %b)
|
|
pub fn unsigned_cmp(a: u16, b: u16) -> std::cmp::Ordering {
|
|
// CHECK: %[[CMP:.+]] = call i8 @llvm.ucmp.i8.i16(i16 %a, i16 %b)
|
|
// CHECK-NEXT: ret i8 %[[CMP]]
|
|
three_way_compare(a, b)
|
|
}
|