From: Patrick Palka <ppalka@redhat.com>
Date: Tue, 22 Oct 2024 12:01:16 +0000 (-0400)
Subject: c++: redundant hashing in register_specialization
X-Git-Tag: basepoints/gcc-16~5009
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ae614b8a3d7866764bfea6f30605f90268db572b;p=thirdparty%2Fgcc.git

c++: redundant hashing in register_specialization

After r15-4050-g5dad738c1dd164 register_specialization needs to set
elt.hash to the (maybe) precomputed hash so that the lookup uses it
rather than redundantly computing it from scratch.

gcc/cp/ChangeLog:

	* pt.cc (register_specialization): Set elt.hash.

Reviewed-by: Jason Merrill <jason@redhat.com>
---

diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc
index 0141c53b617c..b590c32345f6 100644
--- a/gcc/cp/pt.cc
+++ b/gcc/cp/pt.cc
@@ -1546,9 +1546,7 @@ register_specialization (tree spec, tree tmpl, tree args, bool is_friend,
   elt.tmpl = tmpl;
   elt.args = args;
   elt.spec = spec;
-
-  if (hash == 0)
-    hash = spec_hasher::hash (&elt);
+  elt.hash = hash;
 
   spec_entry **slot = decl_specializations->find_slot (&elt, INSERT);
   if (*slot)