rust/src/test/mir-opt/const_prop/issue-67019.rs

// compile-flags: -Z mir-opt-level=2

// This used to ICE in const-prop

fn test(this: ((u8, u8),)) {
    assert!((this.0).0 == 1);
}

// EMIT_MIR rustc.main.ConstProp.diff
fn main() {
    test(((1, 2),));
}
const-prop: Restrict scalar pair propagation We now only propagate a scalar pair if the Rvalue is a tuple with two scalars. This for example avoids propagating a (u8, u8) value when Rvalue has type `((), u8, u8)` (see the regression test). While this is a correct thing to do, implementation is tricky and will be done later. Fixes #66971 Fixes #66339 Fixes #67019 2019-12-05 01:40:24 -06:00			`// compile-flags: -Z mir-opt-level=2`

			`// This used to ICE in const-prop`

			`fn test(this: ((u8, u8),)) {`
			`assert!((this.0).0 == 1);`
			`}`

--bless more mir-opt tests. 2020-04-04 12:15:01 -05:00			`// EMIT_MIR rustc.main.ConstProp.diff`
const-prop: Restrict scalar pair propagation We now only propagate a scalar pair if the Rvalue is a tuple with two scalars. This for example avoids propagating a (u8, u8) value when Rvalue has type `((), u8, u8)` (see the regression test). While this is a correct thing to do, implementation is tricky and will be done later. Fixes #66971 Fixes #66339 Fixes #67019 2019-12-05 01:40:24 -06:00			`fn main() {`
			`test(((1, 2),));`
			`}`