rust/tests/codegen/match-optimizes-away.rs

43 lines
686 B
Rust

//
//@ compile-flags: -O
#![crate_type = "lib"]
pub enum Three {
A,
B,
C,
}
#[repr(u16)]
pub enum Four {
A,
B,
C,
D,
}
#[no_mangle]
pub fn three_valued(x: Three) -> Three {
// CHECK-LABEL: @three_valued
// CHECK-NEXT: {{^.*:$}}
// CHECK-NEXT: ret i8 %0
match x {
Three::A => Three::A,
Three::B => Three::B,
Three::C => Three::C,
}
}
#[no_mangle]
pub fn four_valued(x: Four) -> Four {
// CHECK-LABEL: @four_valued
// CHECK-NEXT: {{^.*:$}}
// CHECK-NEXT: ret i16 %0
match x {
Four::A => Four::A,
Four::B => Four::B,
Four::C => Four::C,
Four::D => Four::D,
}
}