Add optimize(size) to some particularly large functions

Author: clubby789

crates/as-if-std/src/lib.rs

@@ -2,7 +2,7 @@
 // submodule into the standard library. We try to set this crate up similarly
 // to the standard library itself to minimize the likelihood of issues when
 // updating the `backtrace` crate.
-
+#![feature(optimize_attribute)]
 #![no_std]
 
 extern crate alloc;

src/symbolize/gimli.rs

@@ -114,6 +114,8 @@ struct Context<'a> {
 }
 
 impl<'data> Context<'data> {
+    // #[feature(optimize_attr)] is enabled when we're built inside libstd
+    #[cfg_attr(backtrace_in_libstd, optimize(size))]
     fn new(
         stash: &'data Stash,
         object: Object<'data>,
@@ -355,6 +357,8 @@ impl Cache {
     }
 
     // unsafe because this is required to be externally synchronized
+    // #[feature(optimize_attr)] is enabled when we're built inside libstd
+    #[cfg_attr(backtrace_in_libstd, optimize(size))]
     unsafe fn with_global(f: impl FnOnce(&mut Self)) {
         // A very small, very simple LRU cache for debug info mappings.
         //