From 8dfd3a455dc7d309f0c82dcb2e2f41da14f6c4af Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov@redhat.com>
Date: Fri, 12 Jul 2024 14:52:26 +0200
Subject: [PATCH] Remove LLVMRustDIBuilderInsertDeclareAtEnd return value

The return value changed from an Instruction to a DbgRecord in
LLVM 19. As we don't actually use the result, drop the return
value entirely to support both.
---
 compiler/rustc_codegen_llvm/src/llvm/ffi.rs     |  2 +-
 .../rustc_llvm/llvm-wrapper/RustWrapper.cpp     | 17 ++++++-----------
 2 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
index 08e9e312827..e0bf6110cdf 100644
--- a/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm/ffi.rs
@@ -2057,7 +2057,7 @@ extern "C" {
         AddrOpsCount: c_uint,
         DL: &'a DILocation,
         InsertAtEnd: &'a BasicBlock,
-    ) -> &'a Value;
+    );
 
     pub fn LLVMRustDIBuilderCreateEnumerator<'a>(
         Builder: &DIBuilder<'a>,
diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
index b6790b7df50..14757b27a37 100644
--- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
+++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
@@ -1137,20 +1137,15 @@ LLVMRustDIBuilderGetOrCreateArray(LLVMRustDIBuilderRef Builder,
       Builder->getOrCreateArray(ArrayRef<Metadata *>(DataValue, Count)).get());
 }
 
-extern "C" LLVMValueRef LLVMRustDIBuilderInsertDeclareAtEnd(
+extern "C" void LLVMRustDIBuilderInsertDeclareAtEnd(
     LLVMRustDIBuilderRef Builder, LLVMValueRef V, LLVMMetadataRef VarInfo,
     uint64_t *AddrOps, unsigned AddrOpsCount, LLVMMetadataRef DL,
     LLVMBasicBlockRef InsertAtEnd) {
-  auto Result = Builder->insertDeclare(
-      unwrap(V), unwrap<DILocalVariable>(VarInfo),
-      Builder->createExpression(
-          llvm::ArrayRef<uint64_t>(AddrOps, AddrOpsCount)),
-      DebugLoc(cast<MDNode>(unwrap(DL))), unwrap(InsertAtEnd));
-#if LLVM_VERSION_GE(19, 0)
-  return wrap(Result.get<llvm::Instruction *>());
-#else
-  return wrap(Result);
-#endif
+  Builder->insertDeclare(unwrap(V), unwrap<DILocalVariable>(VarInfo),
+                         Builder->createExpression(
+                             llvm::ArrayRef<uint64_t>(AddrOps, AddrOpsCount)),
+                         DebugLoc(cast<MDNode>(unwrap(DL))),
+                         unwrap(InsertAtEnd));
 }
 
 extern "C" LLVMMetadataRef LLVMRustDIBuilderCreateEnumerator(