From: Robin Dapp <rdapp@ventanamicro.com>
Date: Fri, 7 Nov 2025 16:18:02 +0000 (+0100)
Subject: vect: Give up if there is no offset_vectype.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3e8cc2f09de83dc203cd86573e39f2a3e9621d8a;p=thirdparty%2Fgcc.git

vect: Give up if there is no offset_vectype.

vect_gather_scatter_fn_p currently ICEs if offset_vectype is NULL.
This is an oversight in the patches that relax gather/scatter detection.
Catch this.

gcc/ChangeLog:

	* tree-vect-data-refs.cc (vect_gather_scatter_fn_p): Bail if
	offset_vectype is NULL.
---

diff --git a/gcc/tree-vect-data-refs.cc b/gcc/tree-vect-data-refs.cc
index e8cfb884c1d..b35ba05fd08 100644
--- a/gcc/tree-vect-data-refs.cc
+++ b/gcc/tree-vect-data-refs.cc
@@ -4630,6 +4630,10 @@ vect_gather_scatter_fn_p (vec_info *vinfo, bool read_p, bool masked_p,
   tree offset_vectype = VECTOR_TYPE_P (offset_type)
     ? offset_type : get_vectype_for_scalar_type (vinfo, offset_type);
 
+  /* If there is no offset vectype, bail.  */
+  if (!offset_vectype)
+    return false;
+
   offset_type = TREE_TYPE (offset_vectype);
 
   /* Get all supported configurations for this data vector type.  */