move llvm_enzyme from rust config to parse_config method

Author: Shourya742

src/bootstrap/src/core/config/config.rs

@@ -798,6 +798,7 @@ impl Config {
         config.apply_install_config(toml.install);
         config.apply_gcc_config(toml.gcc);
         config.apply_dist_config(toml.dist);
+        config.apply_llvm_config(toml.llvm);
 
         config.apply_build_config(
             toml.build,
@@ -809,7 +810,9 @@ impl Config {
         );
         config.apply_target_config(toml.target);
         config.apply_rust_config(toml.rust, flags_warnings);
-        config.apply_llvm_config(toml.llvm);
+
+        config.llvm_enzyme =
+            config.llvm_enzyme || config.channel == "dev" || config.channel == "nightly";
 
         if config.llvm_from_ci {
             let triple = &config.host_target.triple;

src/bootstrap/src/core/config/toml/llvm.rs

@@ -206,7 +206,7 @@ impl Config {
             self.llvm_allow_old_toolchain = allow_old_toolchain.unwrap_or(false);
             self.llvm_offload = offload.unwrap_or(false);
             self.llvm_tests = tests.unwrap_or(false);
-            self.llvm_enzyme = enzyme.unwrap_or(false);
+            self.llvm_enzyme = enzyme.unwrap_or(self.channel == "dev" || self.channel == "nightly");
             self.llvm_plugins = plugins.unwrap_or(false);
             self.llvm_polly = polly.unwrap_or(false);
             self.llvm_clang = clang.unwrap_or(false);

src/bootstrap/src/core/config/toml/rust.rs

@@ -619,7 +619,6 @@ impl Config {
             self.rust_randomize_layout = randomize_layout.unwrap_or_default();
             self.llvm_tools_enabled = llvm_tools.unwrap_or(true);
 
-            self.llvm_enzyme = self.channel == "dev" || self.channel == "nightly";
             self.rustc_default_linker = default_linker;
             self.musl_root = musl_root.map(PathBuf::from);
             self.save_toolstates = save_toolstates.map(PathBuf::from);