From: Richard Biener <rguenther@suse.de>
Date: Fri, 23 Jun 2023 08:12:24 +0000 (+0200)
Subject: Fix tree_simple_nonnegative_warnv_p for VECTOR_TYPEs
X-Git-Tag: basepoints/gcc-15~8096
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f2fcf21d4c939831c299cb884cbeaca1d33fa8e;p=thirdparty%2Fgcc.git

Fix tree_simple_nonnegative_warnv_p for VECTOR_TYPEs

tree_simple_nonnegative_warnv_p ends up being called on VECTOR_TYPEs
which I think even gets the wrong answer here for tcc_comparison
since vector bools are signed.  The following properly guards
that with !VECTOR_TYPE_P.

	* fold-const.cc (tree_simple_nonnegative_warnv_p): Guard
	the truth_value_p case with !VECTOR_TYPE_P.
---

diff --git a/gcc/fold-const.cc b/gcc/fold-const.cc
index b05b3ae16e93..ac90a594fcc4 100644
--- a/gcc/fold-const.cc
+++ b/gcc/fold-const.cc
@@ -14530,7 +14530,8 @@ tree_expr_maybe_real_minus_zero_p (const_tree x)
 static bool
 tree_simple_nonnegative_warnv_p (enum tree_code code, tree type)
 {
-  if ((TYPE_PRECISION (type) != 1 || TYPE_UNSIGNED (type))
+  if (!VECTOR_TYPE_P (type)
+      && (TYPE_PRECISION (type) != 1 || TYPE_UNSIGNED (type))
       && truth_value_p (code))
     /* Truth values evaluate to 0 or 1, which is nonnegative unless we
        have a signed:1 type (where the value is -1 and 0).  */