OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

df-problems.c (df_lr_local_compute): Manually CSE PIC_OFFSET_TABLE_REGNUM. 

* df-problems.c (df_lr_local_compute): Manually CSE
	PIC_OFFSET_TABLE_REGNUM.
	* df-scan.c (df_get_regular_block_artificial_uses): Likewise.
	(df_get_entry_block_def_set, df_get_exit_block_use_set): Likewise.

From-SVN: r175081
This commit is contained in:
Jeff Law 2011-06-15 10:23:28 -06:00 committed by Jeff Law
parent 6beec6813a
commit 2098e43871
3 changed files with 27 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2011-05-06 Jeff Law <law@redhat.com>
* df-problems.c (df_lr_local_compute): Manually CSE
PIC_OFFSET_TABLE_REGNUM.
* df-scan.c (df_get_regular_block_artificial_uses): Likewise.
(df_get_entry_block_def_set, df_get_exit_block_use_set): Likewise.
2011-06-13 Jan Hubicka <jh@suse.cz>
* cgraphunit.c (handle_alias_pairs): New function.

7
gcc/df-problems.c
View File

@ -906,6 +906,7 @@ df_lr_local_compute (bitmap all_blocks ATTRIBUTE_UNUSED)
blocks within infinite loops. */
if (!reload_completed)
{
unsigned int pic_offset_table_regnum = PIC_OFFSET_TABLE_REGNUM;
/* Any reference to any pseudo before reload is a potential
reference of the frame pointer. */
bitmap_set_bit (&df->hardware_regs_used, FRAME_POINTER_REGNUM);
@ -919,9 +920,9 @@ df_lr_local_compute (bitmap all_blocks ATTRIBUTE_UNUSED)
/* Any constant, or pseudo with constant equivalences, may
require reloading from memory using the pic register. */
if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
&& fixed_regs[PIC_OFFSET_TABLE_REGNUM])
bitmap_set_bit (&df->hardware_regs_used, PIC_OFFSET_TABLE_REGNUM);
if (pic_offset_table_regnum != INVALID_REGNUM
&& fixed_regs[pic_offset_table_regnum])
bitmap_set_bit (&df->hardware_regs_used, pic_offset_table_regnum);
}
EXECUTE_IF_SET_IN_BITMAP (df_lr->out_of_date_transfer_functions, 0, bb_index, bi)

25
gcc/df-scan.c
View File

@ -3625,6 +3625,8 @@ df_get_regular_block_artificial_uses (bitmap regular_block_artificial_uses)
live everywhere -- which might not already be the case for
blocks within infinite loops. */
{
unsigned int picreg = PIC_OFFSET_TABLE_REGNUM;
/* Any reference to any pseudo before reload is a potential
reference of the frame pointer. */
bitmap_set_bit (regular_block_artificial_uses, FRAME_POINTER_REGNUM);
@ -3642,9 +3644,9 @@ df_get_regular_block_artificial_uses (bitmap regular_block_artificial_uses)
/* Any constant, or pseudo with constant equivalences, may
require reloading from memory using the pic register. */
if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
&& fixed_regs[PIC_OFFSET_TABLE_REGNUM])
bitmap_set_bit (regular_block_artificial_uses, PIC_OFFSET_TABLE_REGNUM);
if (picreg != INVALID_REGNUM
&& fixed_regs[picreg])
bitmap_set_bit (regular_block_artificial_uses, picreg);
}
/* The all-important stack pointer must always be live. */
bitmap_set_bit (regular_block_artificial_uses, STACK_POINTER_REGNUM);
@ -3779,6 +3781,10 @@ df_get_entry_block_def_set (bitmap entry_block_defs)
/* These registers are live everywhere. */
if (!reload_completed)
{
#ifdef PIC_OFFSET_TABLE_REGNUM
unsigned int picreg = PIC_OFFSET_TABLE_REGNUM;
#endif
#if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM
/* Pseudos with argument area equivalences may require
reloading via the argument pointer. */
@ -3789,9 +3795,9 @@ df_get_entry_block_def_set (bitmap entry_block_defs)
#ifdef PIC_OFFSET_TABLE_REGNUM
/* Any constant, or pseudo with constant equivalences, may
require reloading from memory using the pic register. */
if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
&& fixed_regs[PIC_OFFSET_TABLE_REGNUM])
bitmap_set_bit (entry_block_defs, PIC_OFFSET_TABLE_REGNUM);
if (picreg != INVALID_REGNUM
&& fixed_regs[picreg])
bitmap_set_bit (entry_block_defs, picreg);
#endif
}
@ -3889,6 +3895,7 @@ static void
df_get_exit_block_use_set (bitmap exit_block_uses)
{
unsigned int i;
unsigned int picreg = PIC_OFFSET_TABLE_REGNUM;
bitmap_clear (exit_block_uses);
@ -3913,9 +3920,9 @@ df_get_exit_block_use_set (bitmap exit_block_uses)
Assume the pic register is not in use, or will be handled by
other means, if it is not fixed. */
if (!PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
&& (unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
&& fixed_regs[PIC_OFFSET_TABLE_REGNUM])
bitmap_set_bit (exit_block_uses, PIC_OFFSET_TABLE_REGNUM);
&& picreg != INVALID_REGNUM
&& fixed_regs[picreg])
bitmap_set_bit (exit_block_uses, picreg);
/* Mark all global registers, and all registers used by the
epilogue as being live at the end of the function since they