From d753cbf7793f20229ed7a151d060456a9e1396e9 Mon Sep 17 00:00:00 2001
From: Manuel Drehwald <git@manuel.drehwald.info>
Date: Wed, 1 Jan 2025 21:42:45 +0100
Subject: upstream rustc_codegen_llvm changes for enzyme/autodiff

---
 compiler/rustc_codegen_gcc/src/lib.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'compiler/rustc_codegen_gcc/src')

diff --git a/compiler/rustc_codegen_gcc/src/lib.rs b/compiler/rustc_codegen_gcc/src/lib.rs
index f2efa981f97..7329080ce1f 100644
--- a/compiler/rustc_codegen_gcc/src/lib.rs
+++ b/compiler/rustc_codegen_gcc/src/lib.rs
@@ -93,6 +93,7 @@ use gccjit::{CType, Context, OptimizationLevel};
 #[cfg(feature = "master")]
 use gccjit::{TargetInfo, Version};
 use rustc_ast::expand::allocator::AllocatorKind;
+use rustc_ast::expand::autodiff_attrs::AutoDiffItem;
 use rustc_codegen_ssa::back::lto::{LtoModuleCodegen, SerializedModule, ThinModule};
 use rustc_codegen_ssa::back::write::{
     CodegenContext, FatLtoInput, ModuleConfig, TargetMachineFactoryFn,
@@ -439,6 +440,15 @@ impl WriteBackendMethods for GccCodegenBackend {
     ) -> Result<ModuleCodegen<Self::Module>, FatalError> {
         back::write::link(cgcx, dcx, modules)
     }
+    fn autodiff(
+        _cgcx: &CodegenContext<Self>,
+        _tcx: TyCtxt<'_>,
+        _module: &ModuleCodegen<Self::Module>,
+        _diff_fncs: Vec<AutoDiffItem>,
+        _config: &ModuleConfig,
+    ) -> Result<(), FatalError> {
+        unimplemented!()
+    }
 }
 
 /// This is the entrypoint for a hot plugged rustc_codegen_gccjit
-- 
cgit 1.4.1-3-g733a5