From 6aff9af1cb863f698ca8c23ba6dd548500f5f7e2 Mon Sep 17 00:00:00 2001
From: Aaron Sawdey <acsawdey@gcc.gnu.org>
Date: Tue, 2 Jan 2018 10:46:29 -0600
Subject: [PATCH] rtlanal.c (canonicalize_condition): Return 0 if final rtx
does not have a conditional at the top.
* rtlanal.c (canonicalize_condition): Return 0 if final rtx
does not have a conditional at the top.
From-SVN: r256079
---
gcc/rtlanal.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 6d50781a32c3..e75ff103fcbf 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -5693,7 +5693,11 @@ canonicalize_condition (rtx_insn *insn, rtx cond, int reverse,
if (CC0_P (op0))
return 0;
- return gen_rtx_fmt_ee (code, VOIDmode, op0, op1);
+ /* We promised to return a comparison. */
+ rtx ret = gen_rtx_fmt_ee (code, VOIDmode, op0, op1);
+ if (COMPARISON_P (ret))
+ return ret;
+ return 0;
}
/* Given a jump insn JUMP, return the condition that will cause it to branch
--
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