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codegen_llvm: set DW_AT_accessibility

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Sets the accessibility of types and fields in DWARF using
`DW_AT_accessibility` attribute.

`DW_AT_accessibility` (public/protected/private) isn't exactly right for
Rust,  but neither is `DW_AT_visibility` (local/exported/qualified), and
there's no way to set `DW_AT_visbility` in LLVM's API.

Signed-off-by: David Wood <david@davidtw.co>
This commit is contained in:
David Wood 2023-08-23 15:29:23 +01:00
parent d253bf61ad
commit 07931c5a08
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14 changed files with 268 additions and 15 deletions
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24
tests/codegen/debug-accessibility/tuple-fields.rs Normal file
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// compile-flags: -C debuginfo=2
#![allow(dead_code)]
// Checks that visibility information is present in the debuginfo for tuple struct fields.
mod module {
use std::hint::black_box;
struct TupleFields(u32, pub(crate) u32, pub(super) u32, pub u32);
// CHECK: [[TupleFields:!.*]] = !DICompositeType(tag: DW_TAG_structure_type, name: "TupleFields"{{.*}}flags: DIFlagPrivate{{.*}})
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "__0", scope: [[TupleFields]]{{.*}}flags: DIFlagPrivate{{.*}})
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "__1", scope: [[TupleFields]]{{.*}}flags: DIFlagProtected{{.*}})
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "__2", scope: [[TupleFields]]{{.*}}flags: DIFlagProtected{{.*}})
// CHECK: {{!.*}} = !DIDerivedType(tag: DW_TAG_member, name: "__3", scope: [[TupleFields]]{{.*}}flags: DIFlagPublic{{.*}})
pub fn use_everything() {
black_box(TupleFields(1, 2, 3, 4));
}
}
fn main() {
module::use_everything();
}