From: Richard Stallman <rms@gnu.org>
Date: Sat, 26 Sep 1992 19:09:26 +0000 (+0000)
Subject: (jump_optimize): When handling dispatch table that always
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0546e268358b519779e46f2c8132d34960550df6;p=gcc.git

(jump_optimize): When handling dispatch table that always
goes to the same place, verify previous insn exists.

From-SVN: r2251
---

diff --git a/gcc/jump.c b/gcc/jump.c
index f32e57ae242..21536b199e3 100644
--- a/gcc/jump.c
+++ b/gcc/jump.c
@@ -621,6 +621,7 @@ jump_optimize (f, cross_jump, noop_moves, after_regscan)
 		    != XEXP (XVECEXP (pat, diff_vec_p, 0), 0))
 		  break;
 	      if (i == len
+		  && dispatch != 0
 		  && GET_CODE (dispatch) == JUMP_INSN
 		  && JUMP_LABEL (dispatch) != 0
 		  /* Don't mess with a casesi insn.  */