From: Jim Wilson <wilson@gcc.gnu.org>
Date: Mon, 21 Oct 1996 17:58:18 +0000 (-0700)
Subject: (strength_reduce): Add check for ! bl->reversed to
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=085daa5a3bec704bfa4c08e1b3e6098f50de9d8d;p=gcc.git

(strength_reduce): Add check for ! bl->reversed to
auto_inc_opt code.

From-SVN: r12985
---

diff --git a/gcc/loop.c b/gcc/loop.c
index 3d07320458b..b6ddb0b9723 100644
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -3910,8 +3910,10 @@ strength_reduce (scan_start, end, loop_top, insn_count,
 		 immediately after its use, so that flow can create an
 		 auto-increment addressing mode.  */
 	      if (v->giv_type == DEST_ADDR && bl->biv_count == 1
-		  && bl->biv->always_executed
-		  && ! bl->biv->maybe_multiple
+		  && bl->biv->always_executed && ! bl->biv->maybe_multiple
+		  /* We don't handle reversed biv's because bl->biv->insn
+		     does not have a valid INSN_LUID.  */
+		  && ! bl->reversed
 		  && v->always_executed && ! v->maybe_multiple)
 		{
 		  /* If other giv's have been combined with this one, then