blob: 1edd9ba9f7da6e8948516fcc0612add0b6e0b336 (
plain)
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
34
35
36
37
38
|
// compile-flags: -O -Z randomize-layout=no
// only-x86_64
// ignore-llvm-version: 16.0.0
// ^ needs https://reviews.llvm.org/D146149 in 16.0.1
#![crate_type = "lib"]
#![feature(option_as_slice)]
extern crate core;
use core::num::NonZeroU64;
use core::option::Option;
// CHECK-LABEL: @u64_opt_as_slice
#[no_mangle]
pub fn u64_opt_as_slice(o: &Option<u64>) -> &[u64] {
// CHECK-NOT: select
// CHECK-NOT: br
// CHECK-NOT: switch
// CHECK-NOT: icmp
o.as_slice()
}
// CHECK-LABEL: @nonzero_u64_opt_as_slice
#[no_mangle]
pub fn nonzero_u64_opt_as_slice(o: &Option<NonZeroU64>) -> &[NonZeroU64] {
// CHECK-NOT: select
// CHECK-NOT: br
// CHECK-NOT: switch
// CHECK-NOT: icmp
// CHECK: %[[NZ:.+]] = icmp ne i64 %{{.+}}, 0
// CHECK-NEXT: zext i1 %[[NZ]] to i64
// CHECK-NOT: select
// CHECK-NOT: br
// CHECK-NOT: switch
// CHECK-NOT: icmp
o.as_slice()
}
|
