| //@ compile-flags: -O -Z randomize-layout=no |
| //@ only-x86_64 |
| #![crate_type = "lib"] |
| |
| extern crate core; |
| |
| use core::num::NonZero; |
| 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<NonZero<u64>>) -> &[NonZero<u64>] { |
| // 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() |
| } |
