Require `type_map::stub` callers to supply file information

This change attaches file information (`DIFile` reference and line
number) to struct debug info nodes.

Before:

```
; foo.ll
...
!5 = !DIFile(filename: "<unknown>", directory: "")
...
!16 = !DICompositeType(tag: DW_TAG_structure_type, name: "MyType", scope: !2, file: !5, size: 32, align: 32, elements: !17, templateParams: !19, identifier: "4cb373851db92e732c4cb5651b886dd0")
...
```

After:

```
; foo.ll
...
!3 = !DIFile(filename: "foo.rs", directory: "/home/matt/src/rust98678", checksumkind: CSK_SHA1, checksum: "bcb9f08512c8f3b8181ef4726012bc6807bc9be4")
...
!16 = !DICompositeType(tag: DW_TAG_structure_type, name: "MyType", scope: !2, file: !3, line: 3, size: 32, align: 32, elements: !17, templateParams: !19, identifier: "9e5968c7af39c148acb253912b7f409f")
...
```

Fixes #98678

4 files changed, 26 insertions, 6 deletions

diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
index 100b046cee2..a33347aa283 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/cpp_like.rs
@@ -199,6 +199,8 @@ pub(super) fn build_enum_type_di_node<'ll, 'tcx>(
             type_map::Stub::Union,
             unique_type_id,
             &enum_type_name,
+            unknown_file_metadata(cx),
+            UNKNOWN_LINE_NUMBER,
             cx.size_and_align_of(enum_type),
             NO_SCOPE_METADATA,
             visibility_di_flags(cx, enum_adt_def.did(), enum_adt_def.did()),
@@ -274,6 +276,8 @@ pub(super) fn build_coroutine_di_node<'ll, 'tcx>(
             type_map::Stub::Union,
             unique_type_id,
             &coroutine_type_name,
+            unknown_file_metadata(cx),
+            UNKNOWN_LINE_NUMBER,
             size_and_align_of(coroutine_type_and_layout),
             NO_SCOPE_METADATA,
             DIFlags::FlagZero,
@@ -481,6 +485,8 @@ fn build_variant_struct_wrapper_type_di_node<'ll, 'tcx>(
                 variant_index,
             ),
             &variant_struct_wrapper_type_name(variant_index),
+            unknown_file_metadata(cx),
+            UNKNOWN_LINE_NUMBER,
             // NOTE: We use size and align of enum_type, not from variant_layout:
             size_and_align_of(enum_or_coroutine_type_and_layout),
             Some(enum_or_coroutine_type_di_node),
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
index b3d4a6642a1..4402f289454 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/mod.rs
@@ -204,6 +204,8 @@ fn build_enum_variant_struct_type_di_node<'ll, 'tcx>(
                 variant_index,
             ),
             variant_def.name.as_str(),
+            unknown_file_metadata(cx),
+            UNKNOWN_LINE_NUMBER,
             // NOTE: We use size and align of enum_type, not from variant_layout:
             size_and_align_of(enum_type_and_layout),
             Some(enum_type_di_node),
@@ -286,6 +288,8 @@ fn build_coroutine_variant_struct_type_di_node<'ll, 'tcx>(
             Stub::Struct,
             unique_type_id,
             &variant_name,
+            unknown_file_metadata(cx),
+            UNKNOWN_LINE_NUMBER,
             size_and_align_of(coroutine_type_and_layout),
             Some(coroutine_type_di_node),
             DIFlags::FlagZero,
@@ -351,7 +355,11 @@ enum DiscrResult {
 
 impl DiscrResult {
     fn opt_single_val(&self) -> Option<u128> {
-        if let Self::Value(d) = *self { Some(d) } else { None }
+        if let Self::Value(d) = *self {
+            Some(d)
+        } else {
+            None
+        }
     }
 }
 
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
index d4006691d37..07c3784efe7 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/enums/native.rs
@@ -62,6 +62,8 @@ pub(super) fn build_enum_type_di_node<'ll, 'tcx>(
             Stub::Struct,
             unique_type_id,
             &enum_type_name,
+            unknown_file_metadata(cx),
+            UNKNOWN_LINE_NUMBER,
             size_and_align_of(enum_type_and_layout),
             Some(containing_scope),
             visibility_flags,
@@ -141,6 +143,8 @@ pub(super) fn build_coroutine_di_node<'ll, 'tcx>(
             Stub::Struct,
             unique_type_id,
             &coroutine_type_name,
+            unknown_file_metadata(cx),
+            UNKNOWN_LINE_NUMBER,
             size_and_align_of(coroutine_type_and_layout),
             Some(containing_scope),
             DIFlags::FlagZero,
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/type_map.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/type_map.rs
index 5120b63d173..f8f8cf914ba 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata/type_map.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata/type_map.rs
@@ -11,7 +11,7 @@ use rustc_middle::ty::{ParamEnv, PolyExistentialTraitRef, Ty, TyCtxt};
 use super::{SmallVec, UNKNOWN_LINE_NUMBER, unknown_file_metadata};
 use crate::common::{AsCCharPtr, CodegenCx};
 use crate::debuginfo::utils::{DIB, create_DIArray, debug_context};
-use crate::llvm::debuginfo::{DIFlags, DIScope, DIType};
+use crate::llvm::debuginfo::{DIFile, DIFlags, DIScope, DIType};
 use crate::llvm::{self};
 
 mod private {
@@ -174,6 +174,8 @@ pub(super) fn stub<'ll, 'tcx>(
     kind: Stub<'ll>,
     unique_type_id: UniqueTypeId<'tcx>,
     name: &str,
+    file_metadata: &'ll DIFile,
+    line_number: u32,
     (size, align): (Size, Align),
     containing_scope: Option<&'ll DIScope>,
     flags: DIFlags,
@@ -193,8 +195,8 @@ pub(super) fn stub<'ll, 'tcx>(
                     containing_scope,
                     name.as_c_char_ptr(),
                     name.len(),
-                    unknown_file_metadata(cx),
-                    UNKNOWN_LINE_NUMBER,
+                    file_metadata,
+                    line_number,
                     size.bits(),
                     align.bits() as u32,
                     flags,
@@ -213,8 +215,8 @@ pub(super) fn stub<'ll, 'tcx>(
                 containing_scope,
                 name.as_c_char_ptr(),
                 name.len(),
-                unknown_file_metadata(cx),
-                UNKNOWN_LINE_NUMBER,
+                file_metadata,
+                line_number,
                 size.bits(),
                 align.bits() as u32,
                 flags,