From: Andrew Pinski <andrew.pinski@oss.qualcomm.com>
Date: Sun, 28 Dec 2025 20:50:12 +0000 (-0800)
Subject: ifcvt: Allow non-comparisons against 0 in noce_try_cond_zero_arith
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc515677b95d292d619c1fe6748a0d91385ca3ff;p=thirdparty%2Fgcc.git

ifcvt: Allow non-comparisons against 0 in noce_try_cond_zero_arith

Like r16-6332-g2a84a753afcf37 but instead of just allowing any comparisons
against 0, this allows all comparisons. I mentioned this in
https://gcc.gnu.org/pipermail/gcc-patches/2025-December/704463.html.

gcc/ChangeLog:

	* ifcvt.cc (noce_try_cond_zero_arith): Remove restriction on comparison
	against 0.

Signed-off-by: Andrew Pinski <andrew.pinski@oss.qualcomm.com>
---

diff --git a/gcc/ifcvt.cc b/gcc/ifcvt.cc
index 2b8f68a9b41..49e09f3d384 100644
--- a/gcc/ifcvt.cc
+++ b/gcc/ifcvt.cc
@@ -3157,9 +3157,6 @@ noce_try_cond_zero_arith (struct noce_if_info *if_info)
   if (!noce_simple_bbs (if_info))
     return false;
 
-  if (!REG_P (XEXP (cond, 0)) || !rtx_equal_p (XEXP (cond, 1), const0_rtx))
-    return false;
-
   a = copy_rtx (if_info->a);
   b = copy_rtx (if_info->b);