Rollup merge of #146631 - Zalathar:di-builder, r=nnethercote

cg_llvm: Replace some DIBuilder wrappers with LLVM-C API bindings (part 3)

- Part of rust-lang/rust#134001
- Follow-up to rust-lang/rust#136375
- Follow-up to rust-lang/rust#136632

---

This is another batch of LLVMDIBuilder binding migrations, replacing some our own LLVMRust bindings with bindings to upstream LLVM-C APIs.

This PR migrates all of the bindings that were touched by rust-lang/rust#136632, plus `LLVMDIBuilderCreateStructType`.

1 files changed, 4 insertions, 4 deletions

diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
index 79334f7f9fe..126082aa3aa 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/mod.rs
@@ -349,7 +349,7 @@ impl<'ll, 'tcx> DebugInfoCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
         let file_metadata = file_metadata(self, &loc.file);
 
         let function_type_metadata =
-            create_subroutine_type(self, get_function_signature(self, fn_abi));
+            create_subroutine_type(self, &get_function_signature(self, fn_abi));
 
         let mut name = String::with_capacity(64);
         type_names::push_item_name(tcx, def_id, false, &mut name);
@@ -441,9 +441,9 @@ impl<'ll, 'tcx> DebugInfoCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
         fn get_function_signature<'ll, 'tcx>(
             cx: &CodegenCx<'ll, 'tcx>,
             fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
-        ) -> &'ll DIArray {
+        ) -> Vec<Option<&'ll llvm::Metadata>> {
             if cx.sess().opts.debuginfo != DebugInfo::Full {
-                return create_DIArray(DIB(cx), &[]);
+                return vec![];
             }
 
             let mut signature = Vec::with_capacity(fn_abi.args.len() + 1);
@@ -484,7 +484,7 @@ impl<'ll, 'tcx> DebugInfoCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                     .extend(fn_abi.args.iter().map(|arg| Some(type_di_node(cx, arg.layout.ty))));
             }
 
-            create_DIArray(DIB(cx), &signature[..])
+            signature
         }
 
         fn get_template_parameters<'ll, 'tcx>(