From: Bernd Schmidt <bernds@redhat.com>
Date: Thu, 1 Mar 2001 13:35:13 +0000 (+0000)
Subject: Fix register elimination problem
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1abdf5e7476e4390edf3556d43a5601870cd3418;p=gcc.git

Fix register elimination problem

From-SVN: r40147
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 40a88ef46be..879827b9f16 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 2001-03-01  Bernd Schmidt  <bernds@redhat.com>
 
+	* reload1.c (eliminate_regs_in_insn): Restrict the special case
+	code not to try to optimize adds with anything but a REG destination.
+
 	* sched-int.h (struct haifa_insn_data): Add new member priority_known.
 	(INSN_PRIORITY_KNOWN): New accessor macro.
 	* haifa-sched.c (priority): Use it instead of testing priority against
diff --git a/gcc/reload1.c b/gcc/reload1.c
index 13d609ef755..077c410d825 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -3016,6 +3016,7 @@ eliminate_regs_in_insn (insn, replace)
      currently support: a single set with the source being a PLUS of an
      eliminable register and a constant.  */
   if (old_set
+      && GET_CODE (SET_DEST (old_set)) == REG
       && GET_CODE (SET_SRC (old_set)) == PLUS
       && GET_CODE (XEXP (SET_SRC (old_set), 0)) == REG
       && GET_CODE (XEXP (SET_SRC (old_set), 1)) == CONST_INT