mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 02:33:55 +00:00
c9c80d2c5f
The only non-obvious changes: - `building/storage_live_dead_in_statics.rs` has a `#[rustfmt::skip]` attribute to avoid reformating a table of data. - Two `.mir` files have slight changes involving line numbers. - In `unusual_item_types.rs` an `EMIT_MIR` annotation is moved to outside a function, which is the usual spot, because `tidy` complains if such a comment is indented. The commit also tweaks the comments in `rustfmt.toml`.
89 lines
2.5 KiB
Rust
89 lines
2.5 KiB
Rust
//@ test-mir-pass: DataflowConstProp
|
|
//@ compile-flags: -O --crate-type=lib
|
|
//@ ignore-endian-big
|
|
// EMIT_MIR_FOR_EACH_BIT_WIDTH
|
|
|
|
use std::mem::transmute;
|
|
|
|
// EMIT_MIR transmute.less_as_i8.DataflowConstProp.diff
|
|
pub fn less_as_i8() -> i8 {
|
|
// CHECK-LABEL: fn less_as_i8(
|
|
// FIXME-CHECK: _0 = const -1_i8;
|
|
unsafe { transmute(std::cmp::Ordering::Less) }
|
|
}
|
|
|
|
// EMIT_MIR transmute.from_char.DataflowConstProp.diff
|
|
pub fn from_char() -> i32 {
|
|
// CHECK-LABEL: fn from_char(
|
|
// CHECK: _0 = const 82_i32;
|
|
unsafe { transmute('R') }
|
|
}
|
|
|
|
// EMIT_MIR transmute.valid_char.DataflowConstProp.diff
|
|
pub fn valid_char() -> char {
|
|
// CHECK-LABEL: fn valid_char(
|
|
// CHECK: _0 = const 'R';
|
|
unsafe { transmute(0x52_u32) }
|
|
}
|
|
|
|
// EMIT_MIR transmute.invalid_char.DataflowConstProp.diff
|
|
pub unsafe fn invalid_char() -> char {
|
|
// CHECK-LABEL: fn invalid_char(
|
|
// CHECK: _0 = const {transmute(0x7fffffff): char};
|
|
unsafe { transmute(i32::MAX) }
|
|
}
|
|
|
|
// EMIT_MIR transmute.invalid_bool.DataflowConstProp.diff
|
|
pub unsafe fn invalid_bool() -> bool {
|
|
// CHECK-LABEL: fn invalid_bool(
|
|
// CHECK: _0 = const {transmute(0xff): bool};
|
|
unsafe { transmute(-1_i8) }
|
|
}
|
|
|
|
// EMIT_MIR transmute.undef_union_as_integer.DataflowConstProp.diff
|
|
pub unsafe fn undef_union_as_integer() -> u32 {
|
|
// CHECK-LABEL: fn undef_union_as_integer(
|
|
// CHECK: _1 = Union32 {
|
|
// CHECK: _0 = move _1 as u32 (Transmute);
|
|
union Union32 {
|
|
value: u32,
|
|
unit: (),
|
|
}
|
|
unsafe { transmute(Union32 { unit: () }) }
|
|
}
|
|
|
|
// EMIT_MIR transmute.unreachable_direct.DataflowConstProp.diff
|
|
pub unsafe fn unreachable_direct() -> ! {
|
|
// CHECK-LABEL: fn unreachable_direct(
|
|
// CHECK: = const ();
|
|
// CHECK: = const ZeroSized: Never;
|
|
let x: Never = unsafe { transmute(()) };
|
|
match x {}
|
|
}
|
|
|
|
// EMIT_MIR transmute.unreachable_ref.DataflowConstProp.diff
|
|
pub unsafe fn unreachable_ref() -> ! {
|
|
// CHECK-LABEL: fn unreachable_ref(
|
|
// CHECK: = const {0x1 as &Never};
|
|
let x: &Never = unsafe { transmute(1_usize) };
|
|
match *x {}
|
|
}
|
|
|
|
// EMIT_MIR transmute.unreachable_mut.DataflowConstProp.diff
|
|
pub unsafe fn unreachable_mut() -> ! {
|
|
// CHECK-LABEL: fn unreachable_mut(
|
|
// CHECK: = const {0x1 as &mut Never};
|
|
let x: &mut Never = unsafe { transmute(1_usize) };
|
|
match *x {}
|
|
}
|
|
|
|
// EMIT_MIR transmute.unreachable_box.DataflowConstProp.diff
|
|
pub unsafe fn unreachable_box() -> ! {
|
|
// CHECK-LABEL: fn unreachable_box(
|
|
// CHECK: = const Box::<Never>(
|
|
let x: Box<Never> = unsafe { transmute(1_usize) };
|
|
match *x {}
|
|
}
|
|
|
|
enum Never {}
|