rust/tests/mir-opt/const_prop/cast.rs

//@ test-mir-pass: GVN
// EMIT_MIR cast.main.GVN.diff

fn main() {
    // CHECK-LABEL: fn main(
    // CHECK: debug x => [[x:_.*]];
    // CHECK: debug y => [[y:_.*]];
    // CHECK: [[x]] = const 42_u32;
    // CHECK: [[y]] = const 42_u8;
    let x = 42u8 as u32;
    let y = 42u32 as u8;
}
mir-opt tests: rename unit-test -> test-mir-pass 2024-04-20 11:19:34 +00:00			`//@ test-mir-pass: GVN`
Replace legacy ConstProp by GVN. 2023-09-20 21:43:33 +00:00			`// EMIT_MIR cast.main.GVN.diff`
Enable `--bless`ing of MIR dumps 2020-03-11 10:49:00 +00:00
Lint overflowing integer casts in const prop This extends the invalid cases we catch in const prop to include overflowing integer casts using the same machinery as the overflowing binary and unary operation logic. 2019-12-13 03:03:32 +00:00			`fn main() {`
FileCheck cast. 2023-12-02 20:18:47 +00:00			`// CHECK-LABEL: fn main(`
			`// CHECK: debug x => [[x:_.*]];`
			`// CHECK: debug y => [[y:_.*]];`
			`// CHECK: [[x]] = const 42_u32;`
			`// CHECK: [[y]] = const 42_u8;`
Lint overflowing integer casts in const prop This extends the invalid cases we catch in const prop to include overflowing integer casts using the same machinery as the overflowing binary and unary operation logic. 2019-12-13 03:03:32 +00:00			`let x = 42u8 as u32;`
			`let y = 42u32 as u8;`
			`}`