mirror of
https://github.com/rust-lang/rust
synced 2024-07-20 18:05:58 +00:00
72800d3b89
Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
61 lines
1.5 KiB
Rust
61 lines
1.5 KiB
Rust
//@ compile-flags: -C no-prepopulate-passes -O
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
pub enum E {
|
|
A,
|
|
B,
|
|
C,
|
|
}
|
|
|
|
// CHECK-LABEL: @exhaustive_match
|
|
#[no_mangle]
|
|
pub fn exhaustive_match(e: E) -> u8 {
|
|
// CHECK: switch{{.*}}, label %[[OTHERWISE:[a-zA-Z0-9_]+]] [
|
|
// CHECK-NEXT: i[[TY:[0-9]+]] [[DISCR:[0-9]+]], label %[[A:[a-zA-Z0-9_]+]]
|
|
// CHECK-NEXT: i[[TY:[0-9]+]] [[DISCR:[0-9]+]], label %[[B:[a-zA-Z0-9_]+]]
|
|
// CHECK-NEXT: i[[TY:[0-9]+]] [[DISCR:[0-9]+]], label %[[C:[a-zA-Z0-9_]+]]
|
|
// CHECK-NEXT: ]
|
|
// CHECK: [[OTHERWISE]]:
|
|
// CHECK-NEXT: unreachable
|
|
//
|
|
// CHECK: [[A]]:
|
|
// CHECK-NEXT: store i8 0, ptr %_0, align 1
|
|
// CHECK-NEXT: br label %[[EXIT:[a-zA-Z0-9_]+]]
|
|
// CHECK: [[B]]:
|
|
// CHECK-NEXT: store i8 1, ptr %_0, align 1
|
|
// CHECK-NEXT: br label %[[EXIT]]
|
|
// CHECK: [[C]]:
|
|
// CHECK-NEXT: store i8 3, ptr %_0, align 1
|
|
// CHECK-NEXT: br label %[[EXIT]]
|
|
match e {
|
|
E::A => 0,
|
|
E::B => 1,
|
|
E::C => 3,
|
|
}
|
|
}
|
|
|
|
#[repr(u16)]
|
|
pub enum E2 {
|
|
A = 13,
|
|
B = 42,
|
|
}
|
|
|
|
// For optimized code we produce a switch with an unreachable target as the `otherwise` so LLVM
|
|
// knows the possible values. Compare with `tests/codegen/match-unoptimized.rs`.
|
|
|
|
// CHECK-LABEL: @exhaustive_match_2
|
|
#[no_mangle]
|
|
pub fn exhaustive_match_2(e: E2) -> u8 {
|
|
// CHECK: switch i16 %{{.+}}, label %[[UNREACH:.+]] [
|
|
// CHECK-NEXT: i16 13,
|
|
// CHECK-NEXT: i16 42,
|
|
// CHECK-NEXT: ]
|
|
// CHECK: [[UNREACH]]:
|
|
// CHECK-NEXT: unreachable
|
|
match e {
|
|
E2::A => 0,
|
|
E2::B => 1,
|
|
}
|
|
}
|