gcse.c (hash_scan_set): An expression is not anticipatible if it is part of a multi-SET insn.

	* gcse.c (hash_scan_set): An expression is not anticipatible if it
	is part of a multi-SET insn.

From-SVN: r40722

gcc/ChangeLog

 Wed Mar 21 14:27:11 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
+	* gcse.c (hash_scan_set): An expression is not anticipatible if it
+	is part of a multi-SET insn.
+
 	* cse.c (find_comparison_args): Remove previous change.
 	* ifcvt.c (noce_process_if_block): When moving an insn, remove any
 	REG_EQUAL notes.

gcc/gcse.c

@@ -1967,8 +1967,9 @@ hash_scan_set (pat, insn, set_p)
 	  && src != dest)
 	{
 	  /* An expression is not anticipatable if its operands are
-	     modified before this insn.  */
-	  int antic_p = oprs_anticipatable_p (src, insn);
+	     modified before this insn or if this is not the only SET in
+	     this insn.  */
+	  int antic_p = oprs_anticipatable_p (src, insn) && single_set (insn);
 	  /* An expression is not available if its operands are
 	     subsequently modified, including this insn.  */
 	  int avail_p = oprs_available_p (src, insn);