From: Patrick Palka <ppalka@redhat.com>
Date: Tue, 23 Feb 2021 14:40:03 +0000 (-0500)
Subject: c++: Micro-optimize instantiation_dependent_expression_p
X-Git-Tag: basepoints/gcc-12~913
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cac960a3ec450377ebeea9a2ea563a545e54f2d6;p=thirdparty%2Fgcc.git

c++: Micro-optimize instantiation_dependent_expression_p

This makes instantiation_dependent_expression_p avoid calling
potential_constant_expression when processing_template_decl isn't set
(and hence when value_dependent_expression_p is definitely false).

gcc/cp/ChangeLog:

	* pt.c (instantiation_dependent_expression_p): Check
	processing_template_decl before calling
	potential_constant_expression.
---

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 60de8e93ff73..03935310ef7a 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -27519,7 +27519,8 @@ bool
 instantiation_dependent_expression_p (tree expression)
 {
   return (instantiation_dependent_uneval_expression_p (expression)
-	  || (potential_constant_expression (expression)
+	  || (processing_template_decl
+	      && potential_constant_expression (expression)
 	      && value_dependent_expression_p (expression)));
 }