single commit with new opt2 impl

Author: ZuseZ4

compiler/rustc_codegen_llvm/src/context.rs

@@ -737,10 +737,6 @@ impl<'ll, 'tcx> MiscCodegenMethods<'tcx> for CodegenCx<'ll, 'tcx> {
         }
     }
 
-    // TODO: Manuel: I think we can drop this and construct the empty vec on the fly?
-    fn create_autodiff(&self) -> Vec<Self::Function> {
-        return vec![];
-    }
 }
 
 impl<'ll> CodegenCx<'ll, '_> {

src/bootstrap/src/core/build_steps/compile.rs

@@ -1068,10 +1068,6 @@ pub fn rustc_cargo(
     // <https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Internal.20lint.20for.20raw.20.60print!.60.20and.20.60println!.60.3F>.
     cargo.rustflag("-Zon-broken-pipe=kill");
 
-    //if builder.config.llvm_enzyme {
-    //    cargo.rustflag("-l").rustflag("Enzyme-19");
-    //}
-
     // We currently don't support cross-crate LTO in stage0. This also isn't hugely necessary
     // and may just be a time sink.
     if compiler.stage != 0 {