local-alloc.c (update_equiv_regs): Copy INSN_CODE to the new instruction.

        * local-alloc.c (update_equiv_regs): Copy INSN_CODE to the
        new instruction.

From-SVN: r39400

gcc/ChangeLog

+2001-02-01  Richard Henderson  <rth@redhat.com>
+
+	* local-alloc.c (update_equiv_regs): Copy INSN_CODE to the
+	new instruction.
+
 2001-02-01  Alexandre Oliva  <aoliva@redhat.com>
 
 	* config/sh/crt1.asm (main_k): Modified so that start calls

gcc/local-alloc.c

@@ -1141,9 +1141,13 @@ update_equiv_regs ()
 		  rtx new_insn;
 
 		  new_insn = emit_insn_before (PATTERN (equiv_insn), insn);
-		  REG_NOTES (PREV_INSN (insn)) = REG_NOTES (equiv_insn);
+		  REG_NOTES (new_insn) = REG_NOTES (equiv_insn);
 		  REG_NOTES (equiv_insn) = 0;
 
+		  /* Make sure this insn is recognized before reload begins,
+		     otherwise eliminate_regs_in_insn will abort.  */
+		  INSN_CODE (new_insn) = INSN_CODE (equiv_insn);
+
 		  PUT_CODE (equiv_insn, NOTE);
 		  NOTE_LINE_NUMBER (equiv_insn) = NOTE_INSN_DELETED;
 		  NOTE_SOURCE_FILE (equiv_insn) = 0;