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