mirror of https://github.com/rust-lang/rust
56 lines
1.6 KiB
Rust
56 lines
1.6 KiB
Rust
//@ compile-flags: -C no-prepopulate-passes
|
|
|
|
#![crate_type = "lib"]
|
|
|
|
// Below, these constants are defined as enum variants that by itself would
|
|
// have a lower alignment than the enum type. Ensure that we mark them
|
|
// correctly with the higher alignment of the enum.
|
|
|
|
// CHECK: @STATIC = {{.*}}, align 4
|
|
|
|
// This checks the constants from inline_enum_const
|
|
// CHECK: @alloc_af1f8e8e6f4b341431a1d405e652df2d = {{.*}}, align 2
|
|
|
|
// This checks the constants from {low,high}_align_const, they share the same
|
|
// constant, but the alignment differs, so the higher one should be used
|
|
// CHECK: [[LOW_HIGH:@alloc_[a-f0-9]+]] = {{.*}}, align 4
|
|
|
|
#[derive(Copy, Clone)]
|
|
// repr(i16) is required for the {low,high}_align_const test
|
|
#[repr(i16)]
|
|
pub enum E<A, B> {
|
|
A(A),
|
|
B(B),
|
|
}
|
|
|
|
#[no_mangle]
|
|
pub static STATIC: E<i16, i32> = E::A(0);
|
|
|
|
// CHECK-LABEL: @static_enum_const
|
|
#[no_mangle]
|
|
pub fn static_enum_const() -> E<i16, i32> {
|
|
STATIC
|
|
}
|
|
|
|
// CHECK-LABEL: @inline_enum_const
|
|
#[no_mangle]
|
|
pub fn inline_enum_const() -> E<i8, i16> {
|
|
*&E::A(0)
|
|
}
|
|
|
|
// CHECK-LABEL: @low_align_const
|
|
#[no_mangle]
|
|
pub fn low_align_const() -> E<i16, [i16; 3]> {
|
|
// Check that low_align_const and high_align_const use the same constant
|
|
// CHECK: memcpy.{{.+}}(ptr align 2 %_0, ptr align 2 {{.*}}[[LOW_HIGH]]{{.*}}, i{{(32|64)}} 8, i1 false)
|
|
*&E::A(0)
|
|
}
|
|
|
|
// CHECK-LABEL: @high_align_const
|
|
#[no_mangle]
|
|
pub fn high_align_const() -> E<i16, i32> {
|
|
// Check that low_align_const and high_align_const use the same constant
|
|
// CHECK: memcpy.{{.+}}(ptr align 4 %_0, ptr align 4 {{.*}}[[LOW_HIGH]]{{.*}}, i{{(32|64)}} 8, i1 false)
|
|
*&E::A(0)
|
|
}
|