17 lines
473 B
Rust
17 lines
473 B
Rust
|
// compile-flags: -C opt-level=3
|
||
|
|
|
||
|
|
#![crate_type = "lib"]
|
||
|
|
|
||
|
|
// #71602: check that slice equality just generates a single bcmp
|
||
|
|
|
||
|
|
// CHECK-LABEL: @is_zero_slice
|
||
|
|
#[no_mangle]
|
||
|
|
pub fn is_zero_slice(data: &[u8; 4]) -> bool {
|
||
|
|
// CHECK: start:
|
||
|
|
// CHECK-NEXT: %{{.+}} = getelementptr {{.+}}
|
||
|
|
// CHECK-NEXT: %[[BCMP:.+]] = tail call i32 @{{bcmp|memcmp}}({{.+}})
|
||
|
|
// CHECK-NEXT: %[[EQ:.+]] = icmp eq i32 %[[BCMP]], 0
|
||
|
|
// CHECK-NEXT: ret i1 %[[EQ]]
|
||
|
|
*data == [0; 4]
|
||
|
|
}
|