[gcc r15-1649] Use auto_vec for memory release on return

[J?rgen Kvalsvik]

https://gcc.gnu.org/g:19f630e6ae8da7159a8c82f337b699245f66e6a6

commit r15-1649-g19f630e6ae8da7159a8c82f337b699245f66e6a6
Author: Jørgen Kvalsvik <j@lambda.is>
Date:   Mon Jun 24 21:55:46 2024 +0200

    Use auto_vec for memory release on return
    
    Using auto_vec ensure this memory is cleaned up on function exit.
    
    gcc/ChangeLog:
    
            * tree-profile.cc (find_conditions): Use auto_vec.

Diff:
---
 gcc/tree-profile.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/tree-profile.cc b/gcc/tree-profile.cc
index e4bb689cef5..8c9945847ca 100644
--- a/gcc/tree-profile.cc
+++ b/gcc/tree-profile.cc
@@ -876,7 +876,7 @@ find_conditions (struct function *fn)
     make_top_index (fnblocks, ctx.B1, ctx.top_index);
 
     /* Bin the Boolean expressions so that exprs[id] -> [x1, x2, ...].  */
-    hash_map<int_hash<unsigned, 0>, vec<basic_block>> exprs;
+    hash_map<int_hash<unsigned, 0>, auto_vec<basic_block, 8>> exprs;
     for (basic_block b : fnblocks)
     {
 	const unsigned uid = condition_uid (fn, b);