rust/tests/codegen/enum/enum-early-otherwise-branch.rs

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2024-02-21 06:53:27 -06:00
//@ compile-flags: -O
#![crate_type = "lib"]
pub enum Enum {
A(u32),
B(u32),
C(u32),
}
#[no_mangle]
pub fn foo(lhs: &Enum, rhs: &Enum) -> bool {
// CHECK-LABEL: define{{.*}}i1 @foo(
// CHECK-NOT: switch
// CHECK-NOT: br
// CHECK: [[SELECT:%.*]] = select
// CHECK-NEXT: ret i1 [[SELECT]]
// CHECK-NEXT: }
match (lhs, rhs) {
(Enum::A(lhs), Enum::A(rhs)) => lhs == rhs,
(Enum::B(lhs), Enum::B(rhs)) => lhs == rhs,
(Enum::C(lhs), Enum::C(rhs)) => lhs == rhs,
_ => false,
}
}