rust/tests/codegen/vec-optimizes-away.rs

13 lines
355 B
Rust

//@ ignore-debug: the debug assertions get in the way
//@ compile-flags: -O
#![crate_type = "lib"]
#[no_mangle]
pub fn sum_me() -> i32 {
// CHECK-LABEL: @sum_me
// CHECK-NEXT: {{^.*:$}}
// CHECK-NEXT: {{.*}} load volatile i8, ptr @__rust_no_alloc_shim_is_unstable, align 1
// CHECK-NEXT: ret i32 6
vec![1, 2, 3].iter().sum::<i32>()
}