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// compile-flags: -O -Z merge-functions=disabled --edition=2021
// only-x86_64
#![crate_type = "lib"]
#![feature(try_blocks)]
// These are now NOPs in LLVM 15, presumably thanks to nikic's change mentioned in
// <https://github.com/rust-lang/rust/issues/85133#issuecomment-1072168354>.
// Unfortunately, as of 2022-08-17 they're not yet nops for `u64`s nor `Option`.
use std::ops::ControlFlow::{self, Continue, Break};
// CHECK-LABEL: @result_nop_match_32
#[no_mangle]
pub fn result_nop_match_32(x: Result<i32, u32>) -> Result<i32, u32> {
// CHECK: start
// CHECK-NEXT: ret i64 %0
match x {
Ok(x) => Ok(x),
Err(x) => Err(x),
}
}
// CHECK-LABEL: @result_nop_traits_32
#[no_mangle]
pub fn result_nop_traits_32(x: Result<i32, u32>) -> Result<i32, u32> {
// CHECK: start
// CHECK-NEXT: ret i64 %0
try {
x?
}
}
// CHECK-LABEL: @control_flow_nop_match_32
#[no_mangle]
pub fn control_flow_nop_match_32(x: ControlFlow<i32, u32>) -> ControlFlow<i32, u32> {
// CHECK: start
// CHECK-NEXT: ret i64 %0
match x {
Continue(x) => Continue(x),
Break(x) => Break(x),
}
}
// CHECK-LABEL: @control_flow_nop_traits_32
#[no_mangle]
pub fn control_flow_nop_traits_32(x: ControlFlow<i32, u32>) -> ControlFlow<i32, u32> {
// CHECK: start
// CHECK-NEXT: ret i64 %0
try {
x?
}
}
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