From f1636e8ad83096ea887edc73633367c329ca051a Mon Sep 17 00:00:00 2001
From: Richard Kenner <kenner@gcc.gnu.org>
Date: Thu, 15 Sep 1994 13:21:49 -0400
Subject: [PATCH] (cse_around_loop): Don't invalidate SUBREG unless it's a
 SUBREG of a REG.

From-SVN: r8085
---
 gcc/cse.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/cse.c b/gcc/cse.c
index 5c9c6b03d04..44a4ab8dd47 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -7590,7 +7590,8 @@ cse_around_loop (loop_start)
     for (p = last_jump_equiv_class->first_same_value; p;
 	 p = p->next_same_value)
       if (GET_CODE (p->exp) == MEM || GET_CODE (p->exp) == REG
-	  || GET_CODE (p->exp) == SUBREG)
+	  || (GET_CODE (p->exp) == SUBREG
+	      && GET_CODE (SUBREG_REG (p->exp)) == REG))
 	invalidate (p->exp);
       else if (GET_CODE (p->exp) == STRICT_LOW_PART
 	       || GET_CODE (p->exp) == ZERO_EXTRACT)