re PR target/44364 (Wrong code with e500 double floating point)

	PR target/44364
	* config/rs6000/e500.h (HARD_REGNO_CALLER_SAVE_MODE): Define.
	* caller-save.c (insert_restore, insert_save): Use non-validate
	form of adjust_address.

From-SVN: r161163

gcc/ChangeLog

+2010-06-22  Alan Modra  <amodra@gmail.com>
+
+	PR target/44364
+	* config/rs6000/e500.h (HARD_REGNO_CALLER_SAVE_MODE): Define.
+	* caller-save.c (insert_restore, insert_save): Use non-validate
+	form of adjust_address.
+
 2010-06-21  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
 
 	PR target/39690

gcc/caller-save.c

@@ -1212,7 +1212,7 @@ insert_restore (struct insn_chain *chain, int before_p, int regno,
       /* Check that insn to restore REGNO in save_mode[regno] is
 	 correct.  */
       && reg_save_code (regno, save_mode[regno]) >= 0)
-    mem = adjust_address (mem, save_mode[regno], 0);
+    mem = adjust_address_nv (mem, save_mode[regno], 0);
   else
     mem = copy_rtx (mem);
 
@@ -1293,7 +1293,7 @@ insert_save (struct insn_chain *chain, int before_p, int regno,
       /* Check that insn to save REGNO in save_mode[regno] is
 	 correct.  */
       && reg_save_code (regno, save_mode[regno]) >= 0)
-    mem = adjust_address (mem, save_mode[regno], 0);
+    mem = adjust_address_nv (mem, save_mode[regno], 0);
   else
     mem = copy_rtx (mem);
 

gcc/config/rs6000/e500.h

 /* Enable E500 support.
-   Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009 Free Software
+   Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software
    Foundation, Inc.
    This file is part of GCC.
 
@@ -46,3 +46,10 @@
 	  error ("E500 and FPRs not supported");			\
       }									\
   } while (0)
+
+/* When setting up caller-save slots (MODE == VOIDmode) ensure we
+   allocate space for DFmode.  Save gprs in the correct mode too.  */
+#define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \
+  (TARGET_E500_DOUBLE && ((MODE) == VOIDmode || (MODE) == DFmode)	\
+   ? DFmode								\
+   : choose_hard_reg_mode ((REGNO), (NREGS), false))