From: Richard Biener <rguenther@suse.de>
Date: Tue, 22 Jun 2021 07:12:42 +0000 (+0200)
Subject: tree-optimization/101159 - fix missing NULL check in popcount pattern
X-Git-Tag: basepoints/gcc-13~6599
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a5b773d3f86dd4333696cab0fe3a6953d3db74a3;p=thirdparty%2Fgcc.git

tree-optimization/101159 - fix missing NULL check in popcount pattern

This fixes a missing check for a NULL vectype in the new popcount
pattern.

2021-06-22  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/101159
	* tree-vect-patterns.c (vect_recog_popcount_pattern): Add
	missing NULL vectype check.
---

diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index 59727056dc7d..d0a5c71dbe49 100644
--- a/gcc/tree-vect-patterns.c
+++ b/gcc/tree-vect-patterns.c
@@ -1385,9 +1385,9 @@ vect_recog_popcount_pattern (vec_info *vinfo,
   vect_pattern_detected ("vec_regcog_popcount_pattern", popcount_stmt);
   vec_type = get_vectype_for_scalar_type (vinfo, lhs_type);
   /* Do it only the backend existed popcount<vector_mode>2.  */
-  if (!direct_internal_fn_supported_p (IFN_POPCOUNT,
-				       vec_type,
-				       OPTIMIZE_FOR_SPEED))
+  if (!vec_type
+      || !direct_internal_fn_supported_p (IFN_POPCOUNT, vec_type,
+					  OPTIMIZE_FOR_SPEED))
     return NULL;
 
   /* Create B = .POPCOUNT (A).  */