Mans pointed our in the PR that the change to not save VRSAVE register
affected saving of callee saved registers. This patch partially
reverts the earlier patch so vrsave_mask is computed, but VRSAVE is
not written and not saved unless TARGET_ALTIVEC_VRSAVE is set.
Committed.
- David
2012-11-19 Mans Rullgard <m...@mansr.com>
PR target/55276
* 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.
Index: rs6000.c
===================================================================
--- rs6000.c (revision 193626)
+++ rs6000.c (working copy)
@@ -17838,8 +17838,7 @@
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 @@
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 @@
|| (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))
{
