procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

s390.c (s390_split_branches): Revert 2005-08-12 change.

Browse source 
* config/s390/s390.c (s390_split_branches): Revert 2005-08-12 change.
	(s390_register_info): Ignore clobbered_regs information for fixed
	registers, and only fixed registers.
	(s390_init_frame_layout): Remove redundant call.

From-SVN: r103054
This commit is contained in:
Ulrich Weigand 2005-08-13 11:08:21 +00:00 • committed by Ulrich Weigand
parent 18f0b880ce
commit e2df5c1dee
2 changed files with 26 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2005-08-13 Ulrich Weigand <uweigand@de.ibm.com>
* config/s390/s390.c (s390_split_branches): Revert 2005-08-12 change.
(s390_register_info): Ignore clobbered_regs information for fixed
registers, and only fixed registers.
(s390_init_frame_layout): Remove redundant call.
2005-08-12 Gerald Pfeifer <gerald@pfeifer.com>
* doc/invoke.texi (C++ Dialect Options): Add dynamic_cast to

37
gcc/config/s390/s390.c
View file

@ -4433,6 +4433,10 @@ s390_split_branches (void)
if (get_attr_length (insn) <= 4)
continue;
/* We are going to use the return register as scratch register,
make sure it will be saved/restored by the prologue/epilogue. */
cfun_frame_layout.save_return_addr_p = 1;
if (!flag_pic)
{
new_literal = 1;
@ -5828,34 +5832,34 @@ s390_register_info (int clobbered_regs[])
s390_regs_ever_clobbered (clobbered_regs);
for (i = 0; i < 16; i++)
clobbered_regs[i] = clobbered_regs[i] && !global_regs[i];
clobbered_regs[i] = clobbered_regs[i] && !global_regs[i] && !fixed_regs[i];
if (frame_pointer_needed)
clobbered_regs[HARD_FRAME_POINTER_REGNUM] = 1;
if (flag_pic)
clobbered_regs[PIC_OFFSET_TABLE_REGNUM]
= regs_ever_live[PIC_OFFSET_TABLE_REGNUM];
|= regs_ever_live[PIC_OFFSET_TABLE_REGNUM];
clobbered_regs[BASE_REGNUM]
= cfun->machine->base_reg
&& REGNO (cfun->machine->base_reg) == BASE_REGNUM;
|= (cfun->machine->base_reg
&& REGNO (cfun->machine->base_reg) == BASE_REGNUM);
clobbered_regs[RETURN_REGNUM]
|= (cfun->machine->split_branches_pending_p
|| cfun_frame_layout.save_return_addr_p
|= (!current_function_is_leaf
|| TARGET_TPF_PROFILING
|| !current_function_is_leaf
|| current_function_stdarg
|| current_function_calls_eh_return);
|| cfun->machine->split_branches_pending_p
|| cfun_frame_layout.save_return_addr_p
|| current_function_calls_eh_return
|| current_function_stdarg);
clobbered_regs[STACK_POINTER_REGNUM]
= !current_function_is_leaf
|| TARGET_TPF_PROFILING
|| cfun_save_high_fprs_p
|| get_frame_size () > 0
|| current_function_calls_alloca
|| current_function_stdarg;
|= (!current_function_is_leaf
|| TARGET_TPF_PROFILING
|| cfun_save_high_fprs_p
|| get_frame_size () > 0
|| current_function_calls_alloca
|| current_function_stdarg);
for (i = 6; i < 16; i++)
if (clobbered_regs[i])
@ -6046,9 +6050,6 @@ s390_init_frame_layout (void)
int base_used;
int clobbered_regs[16];
/* If return address register is explicitly used, we need to save it. */
s390_regs_ever_clobbered (clobbered_regs);
/* On S/390 machines, we may need to perform branch splitting, which
will require both base and return address register. We have no
choice but to assume we're going to need them until right at the