mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-24 07:44:10 +00:00
24 lines
773 B
Rust
24 lines
773 B
Rust
// compile-flags: -C no-prepopulate-passes -Zmir-opt-level=0 -Copt-level=0
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
// Hack to get the correct size for the length part in slices
|
|
// CHECK: @helper([[USIZE:i[0-9]+]] %_1)
|
|
#[no_mangle]
|
|
pub fn helper(_: usize) {
|
|
}
|
|
|
|
// CHECK-LABEL: @ref_dst
|
|
#[no_mangle]
|
|
pub fn ref_dst(s: &[u8]) {
|
|
// We used to generate an extra alloca and memcpy to ref the dst, so check that we copy
|
|
// directly to the alloca for "x"
|
|
// CHECK: [[X0:%[0-9]+]] = getelementptr inbounds { ptr, [[USIZE]] }, {{.*}} %x, i32 0, i32 0
|
|
// CHECK: store ptr %s.0, {{.*}} [[X0]]
|
|
// CHECK: [[X1:%[0-9]+]] = getelementptr inbounds { ptr, [[USIZE]] }, {{.*}} %x, i32 0, i32 1
|
|
// CHECK: store [[USIZE]] %s.1, {{.*}} [[X1]]
|
|
|
|
let x = &*s;
|
|
&x; // keep variable in an alloca
|
|
}
|