Auto merge of rust-lang#102099 - InnovativeInventor:re-cold-land, r=nikic

Rebased: Mark drop calls in landing pads cold instead of noinline

I noticed that certain inlining optimizations were missing while staring at some compiled code output. I'd like to see this relanded, so I rebased the PR from `@erikdesjardins` (PR rust-lang#94823).

This PR reapplies rust-lang#92419, which was reverted in rust-lang#94402 due to rust-lang#94390.

Fixes rust-lang#46515, fixes rust-lang#87055.

Update: fixes rust-lang#97217.

Author: bors

src/builder.rs

@@ -1420,7 +1420,7 @@ impl<'a, 'gcc, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'gcc, 'tcx> {
         self.cx
     }
 
-    fn do_not_inline(&mut self, _llret: RValue<'gcc>) {
+    fn apply_attrs_to_cleanup_callsite(&mut self, _llret: RValue<'gcc>) {
         // FIXME(bjorn3): implement
     }