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s390.c (s390_frame_info): Added alignment statement for floating point register area on stack. 

2004-09-20  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390.c (s390_frame_info): Added alignment statement for
	floating point register area on stack.

From-SVN: r87765
This commit is contained in:
Andreas Krebbel 2004-09-20 17:25:39 +00:00 committed by Ulrich Weigand
parent da89fba81f
commit ea50629789
2 changed files with 23 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-09-20 Andreas Krebbel <krebbel1@de.ibm.com>
* config/s390/s390.c (s390_frame_info): Added alignment statement for
floating point register area on stack.
2004-09-20 Jakub Jelinek <jakub@redhat.com>
* predict.c (expr_expected_value): Use *_CLASS_P macros.

20
gcc/config/s390/s390.c
View File

@ -5958,8 +5958,11 @@ s390_frame_info (int base_used, int return_addr_used)
}
else
{
/* On 31 bit we have to care about alignment of the
floating point regs to provide fastest access. */
cfun_frame_layout.f0_offset
= (cfun_frame_layout.gprs_offset
= ((cfun_frame_layout.gprs_offset
& ~(STACK_BOUNDARY / BITS_PER_UNIT - 1))
- 8 * (cfun_fpr_bit_p (0) + cfun_fpr_bit_p (1)));
cfun_frame_layout.f4_offset
@ -5996,7 +5999,9 @@ s390_frame_info (int base_used, int return_addr_used)
{
cfun_frame_layout.frame_size += (cfun_frame_layout.save_backchain_p
* UNITS_PER_WORD);
/* No alignment trouble here because f8-f15 are only saved under
64 bit. */
cfun_frame_layout.f8_offset = (MIN (MIN (cfun_frame_layout.f0_offset,
cfun_frame_layout.f4_offset),
cfun_frame_layout.gprs_offset)
@ -6009,6 +6014,9 @@ s390_frame_info (int base_used, int return_addr_used)
cfun_frame_layout.frame_size += 8;
cfun_frame_layout.frame_size += cfun_gprs_save_area_size;
/* If under 31 bit an odd number of gprs has to be saved we have to adjust
the frame size to sustain 8 byte alignment of stack frames. */
cfun_frame_layout.frame_size = ((cfun_frame_layout.frame_size +
STACK_BOUNDARY / BITS_PER_UNIT - 1)
& ~(STACK_BOUNDARY / BITS_PER_UNIT - 1));
@ -7150,6 +7158,10 @@ s390_gimplify_va_arg (tree valist, tree type, tree *pre_p,
indirect_p = 1;
reg = gpr;
n_reg = 1;
/* TARGET_KERNEL_BACKCHAIN on 31 bit: It is assumed here that no padding
will be added by s390_frame_info because for va_args always an even
number of gprs has to be saved r15-r2 = 14 regs. */
sav_ofs = (TARGET_KERNEL_BACKCHAIN
? (TARGET_64BIT ? 4 : 2) * 8 : 2 * UNITS_PER_WORD);
sav_scale = UNITS_PER_WORD;
@ -7185,6 +7197,10 @@ s390_gimplify_va_arg (tree valist, tree type, tree *pre_p,
indirect_p = 0;
reg = gpr;
n_reg = (size + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
/* TARGET_KERNEL_BACKCHAIN on 31 bit: It is assumed here that no padding
will be added by s390_frame_info because for va_args always an even
number of gprs has to be saved r15-r2 = 14 regs. */
sav_ofs = TARGET_KERNEL_BACKCHAIN ?
(TARGET_64BIT ? 4 : 2) * 8 : 2*UNITS_PER_WORD;