rs6000.c (rs6000_stack_info): Always set vrsave_mask for TARGET_ALTIVEC_ABI.

2012-11-19  Mans Rullgard  <mans@mansr.com>

        * config/rs6000/rs6000.c (rs6000_stack_info): Always set vrsave_mask
        for TARGET_ALTIVEC_ABI.  Zero vrsave_save_offset if
        !TARGET_ALTIVEC_VRSAVE.
        (rs6000_emit_prologue): For SAVE_INLINE_VLRs, check vrsave_size
        not vrsave_mask.

From-SVN: r193627

gcc/ChangeLog

+2012-11-19  Mans Rullgard  <mans@mansr.com>
+
+	* config/rs6000/rs6000.c (rs6000_stack_info): Always set vrsave_mask
+	for TARGET_ALTIVEC_ABI.  Zero vrsave_save_offset if
+	!TARGET_ALTIVEC_VRSAVE.
+	(rs6000_emit_prologue): For SAVE_INLINE_VLRs, check vrsave_size
+	not vrsave_mask.
+
 2012-11-19  David Edelsohn  <dje.gcc@gmail.com>
 
 	* system.h (vec_free): Undef.

gcc/config/rs6000/rs6000.c

@@ -17838,8 +17838,7 @@ rs6000_stack_info (void)
   else
     info_ptr->spe_gp_size = 0;
 
-  /* Set VRSAVE register if it is saved and restored.  */
-  if (TARGET_ALTIVEC_ABI && TARGET_ALTIVEC_VRSAVE)
+  if (TARGET_ALTIVEC_ABI)
     info_ptr->vrsave_mask = compute_vrsave_mask ();
   else
     info_ptr->vrsave_mask = 0;
@@ -18027,7 +18026,8 @@ rs6000_stack_info (void)
   if (! TARGET_ALTIVEC_ABI || info_ptr->altivec_size == 0)
     info_ptr->altivec_save_offset = 0;
 
-  if (! TARGET_ALTIVEC_ABI || info_ptr->vrsave_mask == 0)
+  /* Zero VRSAVE offset if not saved and restored.  */
+  if (! TARGET_ALTIVEC_VRSAVE || info_ptr->vrsave_mask == 0)
     info_ptr->vrsave_save_offset = 0;
 
   if (! TARGET_SPE_ABI
@@ -20058,7 +20058,7 @@ rs6000_emit_prologue (void)
 	  || (info->altivec_size != 0
 	      && (info->altivec_save_offset + info->altivec_size - 16
 		  + info->total_size - frame_off) > 32767)
-	  || (info->vrsave_mask != 0
+	  || (info->vrsave_size != 0
 	      && (info->vrsave_save_offset
 		  + info->total_size - frame_off) > 32767))
 	{