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// skip-filecheck
// EMIT_MIR enum_cast.foo.built.after.mir
// EMIT_MIR enum_cast.bar.built.after.mir
// EMIT_MIR enum_cast.boo.built.after.mir
// EMIT_MIR enum_cast.far.built.after.mir
// Previously MIR building included range `Assume`s in the MIR statements,
// which these tests demonstrated, but now that we have range metadata on
// parameters in LLVM (in addition to !range metadata on loads) the impact
// of the extra volume of MIR is worse than its value.
// Thus these are now about the discriminant type and the cast type,
// both of which might be different from the backend type of the tag.
enum Foo {
A,
}
enum Bar {
A,
B,
}
#[repr(u8)]
enum Boo {
A,
B,
}
#[repr(i16)]
enum Far {
A,
B,
}
fn foo(foo: Foo) -> usize {
foo as usize
}
fn bar(bar: Bar) -> usize {
bar as usize
}
fn boo(boo: Boo) -> usize {
boo as usize
}
fn far(far: Far) -> isize {
far as isize
}
#[repr(i16)]
enum SignedAroundZero {
A = -2,
B = 0,
C = 2,
}
#[repr(u16)]
enum UnsignedAroundZero {
A = 65535,
B = 0,
C = 1,
}
// EMIT_MIR enum_cast.signy.built.after.mir
fn signy(x: SignedAroundZero) -> i16 {
x as i16
}
// EMIT_MIR enum_cast.unsigny.built.after.mir
fn unsigny(x: UnsignedAroundZero) -> u16 {
// FIXME: This doesn't get an around-the-end range today, sadly.
x as u16
}
enum NotStartingAtZero {
A = 4,
B = 6,
C = 8,
}
// EMIT_MIR enum_cast.offsetty.built.after.mir
fn offsetty(x: NotStartingAtZero) -> u32 {
x as u32
}
fn main() {}
|
