From: zhongjuzhe <juzhe.zhong@rivai.ai>
Date: Mon, 22 Aug 2022 09:15:31 +0000 (+0100)
Subject: middle-end: Fix issue of poly_uint16 (1, 1) in self test
X-Git-Tag: basepoints/gcc-14~5071
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=21e7d87a901d45f0cb5e5510d22bfbdb0d0ac6a1;p=thirdparty%2Fgcc.git

middle-end: Fix issue of poly_uint16 (1, 1) in self test

This patch fix issue of poly_uint16 (1, 1) in machine mode self test.

gcc/ChangeLog:

	* simplify-rtx.cc (test_vector_subregs_fore_back): Make first value
	and repeat value different.
---

diff --git a/gcc/simplify-rtx.cc b/gcc/simplify-rtx.cc
index 7d09bf7103d6..fc0d6c3ca2ae 100644
--- a/gcc/simplify-rtx.cc
+++ b/gcc/simplify-rtx.cc
@@ -8434,7 +8434,7 @@ test_vector_subregs_fore_back (machine_mode inner_mode)
   for (unsigned int i = 0; i < count; ++i)
     builder.quick_push (gen_int_mode (i, int_mode));
   for (unsigned int i = 0; i < count; ++i)
-    builder.quick_push (gen_int_mode (-(int) i, int_mode));
+    builder.quick_push (gen_int_mode (-1 - (int) i, int_mode));
   rtx x = builder.build ();
 
   test_vector_subregs_modes (x);