Auto merge of #87610 - Aaron1011:bump-llvm-bugfix, r=cuviper

Bump LLVM for RegAllocFast bugfix

Fixes #83854

cc `@cuviper`

Author: bors

src/llvm-project

@@ -19,9 +19,7 @@
 
 // revisions: no thin fat
 //[no]compile-flags: -C lto=no
-// FIXME(#83854) running this revision with 1 CGU triggers llvm assert in register allocator
-//  when executed in i686-gnu-nopt runner.
-//[thin]compile-flags: -C lto=thin -Ccodegen-units=2
+//[thin]compile-flags: -C lto=thin
 //[fat]compile-flags: -C lto=fat
 
 #![feature(core_panic)]

src/test/ui/extern/issue-64655-allow-unwind-when-calling-panic-directly.rs

@@ -40,9 +40,7 @@
 //[no1]compile-flags: -C opt-level=1 -C lto=no
 //[no2]compile-flags: -C opt-level=2 -C lto=no
 //[no3]compile-flags: -C opt-level=3 -C lto=no
-// FIXME(#83854) running this revision with 1 CGU triggers llvm assert in register allocator
-//  when executed in dist-i586-gnu-i586-i686-musl runner.
-//[thin0]compile-flags: -C opt-level=0 -C lto=thin -Ccodegen-units=2
+//[thin0]compile-flags: -C opt-level=0 -C lto=thin
 //[thin1]compile-flags: -C opt-level=1 -C lto=thin
 //[thin2]compile-flags: -C opt-level=2 -C lto=thin
 //[thin3]compile-flags: -C opt-level=3 -C lto=thin