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//! This test checks that match branches which all access a field
//! at the same offset are merged together.
//!
//@ compile-flags: -O
#![crate_type = "lib"]
#[repr(C)]
pub struct A {
x: f64,
y: u64,
}
#[repr(C)]
pub struct B {
x: f64,
y: u32,
}
#[repr(C)]
pub struct C {
x: f64,
y: u16,
}
#[repr(C)]
pub struct D {
x: f64,
y: u8,
}
pub enum E {
A(A),
B(B),
C(C),
D(D),
}
// CHECK-LABEL: @match_on_e
#[no_mangle]
pub fn match_on_e(e: &E) -> &f64 {
// CHECK: start:
// CHECK-NEXT: getelementptr
// CHECK-NEXT: ret
match e {
E::A(A { x, .. }) | E::B(B { x, .. }) | E::C(C { x, .. }) | E::D(D { x, .. }) => x,
}
}
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