rust/tests/mir-opt/const_prop/transmute.unreachable_box.ConstProp.diff
Scott McMurray 64cce5fc7d Add CastKind::Transmute to MIR
Updates `interpret`, `codegen_ssa`, and `codegen_cranelift` to consume the new cast instead of the intrinsic.

Includes `CastTransmute` for custom MIR building, to be able to test the extra UB.
2023-03-22 15:15:41 -07:00

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1.1 KiB
Diff

- // MIR for `unreachable_box` before ConstProp
+ // MIR for `unreachable_box` after ConstProp
fn unreachable_box() -> ! {
let mut _0: !; // return place in scope 0 at $DIR/transmute.rs:+0:36: +0:37
let mut _1: !; // in scope 0 at $DIR/transmute.rs:+0:38: +3:2
let _2: std::boxed::Box<Never>; // in scope 0 at $DIR/transmute.rs:+1:9: +1:10
let mut _3: !; // in scope 0 at $DIR/transmute.rs:+2:5: +2:16
scope 1 {
debug x => _2; // in scope 1 at $DIR/transmute.rs:+1:9: +1:10
}
scope 2 {
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/transmute.rs:+0:38: +3:2
StorageLive(_2); // scope 0 at $DIR/transmute.rs:+1:9: +1:10
_2 = const 1_usize as std::boxed::Box<Never> (Transmute); // scope 2 at $DIR/transmute.rs:+1:34: +1:52
StorageLive(_3); // scope 1 at $DIR/transmute.rs:+2:5: +2:16
unreachable; // scope 1 at $DIR/transmute.rs:+2:11: +2:13
}
}