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86 lines
2.5 KiB
Rust
86 lines
2.5 KiB
Rust
//@ unit-test: DataflowConstProp
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//@ compile-flags: -O --crate-type=lib
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//@ ignore-endian-big
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// EMIT_MIR_FOR_EACH_BIT_WIDTH
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use std::mem::transmute;
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// EMIT_MIR transmute.less_as_i8.DataflowConstProp.diff
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pub fn less_as_i8() -> i8 {
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// CHECK-LABEL: fn less_as_i8(
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// FIXME-CHECK: _0 = const -1_i8;
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unsafe { transmute(std::cmp::Ordering::Less) }
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}
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// EMIT_MIR transmute.from_char.DataflowConstProp.diff
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pub fn from_char() -> i32 {
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// CHECK-LABEL: fn from_char(
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// CHECK: _0 = const 82_i32;
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unsafe { transmute('R') }
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}
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// EMIT_MIR transmute.valid_char.DataflowConstProp.diff
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pub fn valid_char() -> char {
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// CHECK-LABEL: fn valid_char(
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// CHECK: _0 = const 'R';
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unsafe { transmute(0x52_u32) }
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}
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// EMIT_MIR transmute.invalid_char.DataflowConstProp.diff
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pub unsafe fn invalid_char() -> char {
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// CHECK-LABEL: fn invalid_char(
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// CHECK: _0 = const {transmute(0x7fffffff): char};
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unsafe { transmute(i32::MAX) }
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}
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// EMIT_MIR transmute.invalid_bool.DataflowConstProp.diff
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pub unsafe fn invalid_bool() -> bool {
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// CHECK-LABEL: fn invalid_bool(
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// CHECK: _0 = const {transmute(0xff): bool};
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unsafe { transmute(-1_i8) }
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}
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// EMIT_MIR transmute.undef_union_as_integer.DataflowConstProp.diff
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pub unsafe fn undef_union_as_integer() -> u32 {
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// CHECK-LABEL: fn undef_union_as_integer(
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// CHECK: _1 = Union32 {
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// CHECK: _0 = move _1 as u32 (Transmute);
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union Union32 { value: u32, unit: () }
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unsafe { transmute(Union32 { unit: () }) }
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}
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// EMIT_MIR transmute.unreachable_direct.DataflowConstProp.diff
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pub unsafe fn unreachable_direct() -> ! {
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// CHECK-LABEL: fn unreachable_direct(
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// CHECK: = const ();
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// CHECK: = const ZeroSized: Never;
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let x: Never = unsafe { transmute(()) };
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match x {}
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}
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// EMIT_MIR transmute.unreachable_ref.DataflowConstProp.diff
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pub unsafe fn unreachable_ref() -> ! {
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// CHECK-LABEL: fn unreachable_ref(
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// CHECK: = const {0x1 as &Never};
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let x: &Never = unsafe { transmute(1_usize) };
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match *x {}
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}
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// EMIT_MIR transmute.unreachable_mut.DataflowConstProp.diff
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pub unsafe fn unreachable_mut() -> ! {
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// CHECK-LABEL: fn unreachable_mut(
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// CHECK: = const {0x1 as &mut Never};
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let x: &mut Never = unsafe { transmute(1_usize) };
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match *x {}
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}
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// EMIT_MIR transmute.unreachable_box.DataflowConstProp.diff
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pub unsafe fn unreachable_box() -> ! {
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// CHECK-LABEL: fn unreachable_box(
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// CHECK: = const Box::<Never>(
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let x: Box<Never> = unsafe { transmute(1_usize) };
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match *x {}
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}
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enum Never {}
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