WIP: temporarily enable cache-derive-macros by default for rustc-perf

Author: Kobzol

compiler/rustc_session/src/options.rs

@@ -2157,8 +2157,8 @@ options! {
         "set options for branch target identification and pointer authentication on AArch64"),
     build_sdylib_interface: bool = (false, parse_bool, [UNTRACKED],
         "whether the stable interface is being built"),
-    cache_derive_macros: bool = (false, parse_bool, [TRACKED],
-        "cache the results of derive proc macro invocations (potentially unsound!) (default: no"),
+    cache_derive_macros: bool = (true, parse_bool, [TRACKED],
+        "cache the results of derive proc macro invocations (potentially unsound!) (default: yes"),
     cf_protection: CFProtection = (CFProtection::None, parse_cfprotection, [TRACKED],
         "instrument control-flow architecture protection"),
     check_cfg_all_expected: bool = (false, parse_bool, [UNTRACKED],