[PATCH, committed] Fix PR 40558, undo part of June 25th powerpc submission

[Michael Meissner]

I'm committing this patch as obvious to fix the bootstrap problem for 40558.
Thanks to Andrew for figuring out what the place where the regression occurred,
and also for pointing out I had missed some of the ChangeLog entries.  Sorry
about that.

2009-07-01  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR bootstrap/40558
	* config/rs6000/rs6000.c (print_operand): Undo change that breaks
	darwin9 for printing reg addresses with %y.

2009-06-25  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (print_operand): Correct lossage message
	for %c error.  Add %x support to print VSX registers as a unified
	register set, instead of separate float and altivec registers.
	Switch to use VECTOR_MEM_ALTIVEC_P instead of TARGET_ALTIVEC for
	%y case, and add support for VSX pre-modify addresses.
	(output_toc): Add assert for CONST containing an integer constant
	in the PLUS case.
	(rs6000_adjust_cost): Add POWER7 support.
	(insn_must_be_first_in_group): Ditto.
	(insn_must_be_last_in_group): Ditto.
	(rs6000_emit_popcount): Ditto.
	(rs6000_vector_mode_supported_p): Ditto.

Index: gcc/config/rs6000/rs6000.c
===================================================================
--- gcc/config/rs6000/rs6000.c	(revision 149150)
+++ gcc/config/rs6000/rs6000.c	(working copy)
@@ -13471,7 +13471,7 @@ print_operand (FILE *file, rtx x, int co
 		 && GET_CODE (tmp) == PRE_MODIFY)
 	  tmp = XEXP (tmp, 1);
 	if (GET_CODE (tmp) == REG)
-	  fprintf (file, "%s,%s", reg_names[0], reg_names[REGNO (tmp)]);
+	  fprintf (file, "0,%s", reg_names[REGNO (tmp)]);
 	else
 	  {
 	    if (!GET_CODE (tmp) == PLUS

-- 
Michael Meissner, IBM
4 Technology Place Drive, MS 2203A, Westford, MA, 01886, USA
meissner@linux.vnet.ibm.com