From: Michael Collison <collison@rivosinc.com>
Date: Fri, 10 Mar 2023 07:19:04 +0000 (+0100)
Subject: [PATCH v2] vect: Check that vector factor is a compile-time constant
X-Git-Tag: basepoints/gcc-14~637
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2dc73876fc9a0df4c3af2766319402d14d39db33;p=thirdparty%2Fgcc.git

[PATCH v2] vect: Check that vector factor is a compile-time constant

	* tree-vect-loop-manip.cc (vect_do_peeling): Use
	result of constant_lower_bound instead of vf for the lower
	bound of the epilog loop trip count.
---

diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc
index d88edafa0185..f60fa50e8f4f 100644
--- a/gcc/tree-vect-loop-manip.cc
+++ b/gcc/tree-vect-loop-manip.cc
@@ -2921,7 +2921,7 @@ vect_do_peeling (loop_vec_info loop_vinfo, tree niters, tree nitersm1,
       if (new_var_p)
 	{
 	  value_range vr (type,
-			  wi::to_wide (build_int_cst (type, vf)),
+			  wi::to_wide (build_int_cst (type, lowest_vf)),
 			  wi::to_wide (TYPE_MAX_VALUE (type)));
 	  set_range_info (niters, vr);
 	}