From: Joern Rennecke <joern.rennecke@riscy-ip.com>
Date: Tue, 9 Jul 2019 21:55:31 +0000 (+0000)
Subject: tree-vect-stmts.c (vectorizable_comparison): Swap operands only once.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a0aeb7fb93da156b64fd08391c79ff35a69af7ba;p=gcc.git

tree-vect-stmts.c (vectorizable_comparison): Swap operands only once.

	* tree-vect-stmts.c (vectorizable_comparison) <!slp_node>:
	Swap operands only once.

From-SVN: r273316
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 71569bfa4d6..4ae2fd81261 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2019-07-09  Joern Rennecke  <joern.rennecke@riscy-ip.com>
+
+	* tree-vect-stmts.c (vectorizable_comparison) <!slp_node>:
+	Swap operands only once.
+
 2019-07-09  Dragan Mladjenovic  <dmladjenovic@wavecomp.com>
 
 	* cfgcleanup.c (old_insns_match_p): Check if used hard regs set is equal
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index e921225b5ec..601a6f55fbf 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -10369,7 +10369,7 @@ vectorizable_comparison (stmt_vec_info stmt_info, gimple_stmt_iterator *gsi,
 
       if (!slp_node)
 	{
-	  if (swap_p)
+	  if (swap_p && j == 0)
 	    std::swap (vec_rhs1, vec_rhs2);
 	  vec_oprnds0.quick_push (vec_rhs1);
 	  vec_oprnds1.quick_push (vec_rhs2);