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56 lines
1.6 KiB
Rust
56 lines
1.6 KiB
Rust
// compile-flags: -C no-prepopulate-passes
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#![crate_type = "lib"]
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// Below, these constants are defined as enum variants that by itself would
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// have a lower alignment than the enum type. Ensure that we mark them
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// correctly with the higher alignment of the enum.
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// CHECK: @STATIC = {{.*}}, align 4
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// This checks the constants from inline_enum_const
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// CHECK: @alloc12 = {{.*}}, align 2
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// This checks the constants from {low,high}_align_const, they share the same
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// constant, but the alignment differs, so the higher one should be used
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// CHECK: [[LOW_HIGH:@alloc[0-9]+]] = {{.*}}, align 4
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#[derive(Copy, Clone)]
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// repr(i16) is required for the {low,high}_align_const test
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#[repr(i16)]
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pub enum E<A, B> {
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A(A),
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B(B),
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}
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#[no_mangle]
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pub static STATIC: E<i16, i32> = E::A(0);
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// CHECK-LABEL: @static_enum_const
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#[no_mangle]
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pub fn static_enum_const() -> E<i16, i32> {
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STATIC
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}
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// CHECK-LABEL: @inline_enum_const
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#[no_mangle]
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pub fn inline_enum_const() -> E<i8, i16> {
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*&E::A(0)
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}
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// CHECK-LABEL: @low_align_const
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#[no_mangle]
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pub fn low_align_const() -> E<i16, [i16; 3]> {
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// Check that low_align_const and high_align_const use the same constant
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// CHECK: memcpy.{{.+}}({{i8\*|ptr}} align 2 %{{[0-9]+}}, {{i8\*|ptr}} align 2 {{.*}}[[LOW_HIGH]]{{.*}}, i{{(32|64)}} 8, i1 false)
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*&E::A(0)
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}
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// CHECK-LABEL: @high_align_const
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#[no_mangle]
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pub fn high_align_const() -> E<i16, i32> {
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// Check that low_align_const and high_align_const use the same constant
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// CHECK: memcpy.{{.+}}({{i8\*|ptr}} align 4 %{{[0-9]+}}, {{i8\*|ptr}} align 4 {{.*}}[[LOW_HIGH]]{{.*}}, i{{(32|64)}} 8, i1 false)
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*&E::A(0)
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}
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