From: Richard Biener <rguenther@suse.de>
Date: Tue, 24 Sep 2024 12:21:33 +0000 (+0200)
Subject: Disable add_store_equivs when -fno-expensive-optimizations
X-Git-Tag: basepoints/gcc-16~5700
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0b2d3bfa38ccce0dda46aba023f64440cc638496;p=thirdparty%2Fgcc.git

Disable add_store_equivs when -fno-expensive-optimizations

IRAs add_store_equivs is quadratic in the size of the function worst
case, disable it when -fno-expensive-optimizations which means at
-O1 and -Og.

	* ira.cc (ira): Gate add_store_equivs on flag_expensive_optimizations.
---

diff --git a/gcc/ira.cc b/gcc/ira.cc
index 156541df4e6..9950ccac70b 100644
--- a/gcc/ira.cc
+++ b/gcc/ira.cc
@@ -5738,7 +5738,7 @@ ira (FILE *f)
     combine_and_move_insns ();
 
   /* Gather additional equivalences with memory.  */
-  if (optimize)
+  if (optimize && flag_expensive_optimizations)
     add_store_equivs ();
 
   loop_optimizer_finalize ();