mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-03-19 03:40:26 +08:00
Code Issues Packages Projects Releases Wiki Activity

cris.h (LEGITIMIZE_RELOAD_ADDRESS): Define.

Browse Source 
* config/cris/cris.h (LEGITIMIZE_RELOAD_ADDRESS): Define.
	* config/cris/cris.c: Include reload.h.
	(cris_initial_elimination_offset): New function.
	* config/cris/cris-protos.h: (cris_initial_elimination_offset):
	Prototype.

From-SVN: r106835
This commit is contained in:
Hans-Peter Nilsson 2005-11-12 21:09:11 +00:00 committed by Hans-Peter Nilsson
parent 73bebd55f0
commit 15883505db
4 changed files with 95 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2005-11-12 Hans-Peter Nilsson <hp@axis.com>
* config/cris/cris.h (LEGITIMIZE_RELOAD_ADDRESS): Define.
* config/cris/cris.c: Include reload.h.
(cris_initial_elimination_offset): New function.
* config/cris/cris-protos.h: (cris_initial_elimination_offset):
Prototype.
2005-11-12 Richard Guenther <rguenther@suse.de>
* gcse.c (find_rtx_in_ldst): Handle NULL pre_ldst_table.

1
gcc/config/cris/cris-protos.h
View File

@ -31,6 +31,7 @@ extern bool cris_simple_epilogue (void);
#ifdef RTX_CODE
extern const char *cris_op_str (rtx);
extern void cris_notice_update_cc (rtx, rtx);
extern bool cris_reload_address_legitimized (rtx, enum machine_mode, int, int, int);
extern void cris_print_operand (FILE *, rtx, int);
extern void cris_print_operand_address (FILE *, rtx);
extern int cris_side_effect_mode_ok (enum rtx_code, rtx *, int, int,

78
gcc/config/cris/cris.c
View File

@ -38,6 +38,7 @@ Boston, MA 02110-1301, USA. */
#include "function.h"
#include "toplev.h"
#include "recog.h"
#include "reload.h"
#include "tm_p.h"
#include "debug.h"
#include "output.h"
@ -1205,6 +1206,81 @@ cris_initial_elimination_offset (int fromreg, int toreg)
gcc_unreachable ();
}
/* Worker function for LEGITIMIZE_RELOAD_ADDRESS. */
bool
cris_reload_address_legitimized (rtx x,
enum machine_mode mode ATTRIBUTE_UNUSED,
int opnum ATTRIBUTE_UNUSED,
int itype,
int ind_levels ATTRIBUTE_UNUSED)
{
enum reload_type type = itype;
rtx op0, op1;
rtx *op0p;
rtx *op1p;
if (GET_CODE (x) != PLUS)
return false;
op0 = XEXP (x, 0);
op0p = &XEXP (x, 0);
op1 = XEXP (x, 1);
op1p = &XEXP (x, 1);
if (!REG_P (op1))
return false;
if (GET_CODE (op0) == SIGN_EXTEND
&& GET_CODE (XEXP (op0, 0)) == MEM)
{
rtx op00 = XEXP (op0, 0);
rtx op000 = XEXP (op00, 0);
rtx *op000p = &XEXP (op00, 0);
if ((GET_MODE (op00) == HImode || GET_MODE (op00) == QImode)
&& (REG_P (op000)
|| (GET_CODE (op000) == POST_INC && REG_P (XEXP (op000, 0)))))
{
bool something_reloaded = false;
if (GET_CODE (op000) == POST_INC
&& REG_P (XEXP (op000, 0))
&& REGNO (XEXP (op000, 0)) > CRIS_LAST_GENERAL_REGISTER)
/* No, this gets too complicated and is too rare to care
about trying to improve on the general code Here.
As the return-value is an all-or-nothing indicator, we
punt on the other register too. */
return false;
if ((REG_P (op000)
&& REGNO (op000) > CRIS_LAST_GENERAL_REGISTER))
{
/* The address of the inner mem is a pseudo or wrong
reg: reload that. */
push_reload (op000, NULL_RTX, op000p, NULL, GENERAL_REGS,
GET_MODE (x), VOIDmode, 0, 0, opnum, type);
something_reloaded = true;
}
if (REGNO (op1) > CRIS_LAST_GENERAL_REGISTER)
{
/* Base register is a pseudo or wrong reg: reload it. */
push_reload (op1, NULL_RTX, op1p, NULL, GENERAL_REGS,
GET_MODE (x), VOIDmode, 0, 0,
opnum, type);
something_reloaded = true;
}
gcc_assert (something_reloaded);
return true;
}
}
return false;
}
/* This function looks into the pattern to see how this insn affects
condition codes.
@ -2160,7 +2236,7 @@ cris_asm_output_mi_thunk (FILE *stream,
}
}
/* Boilerplate emitted at start of file.
/* Boilerplate emitted at start of file.
NO_APP *only at file start* means faster assembly. It also means
comments are not allowed. In some cases comments will be output

9
gcc/config/cris/cris.h
View File

@ -1055,6 +1055,15 @@ struct cum_args {int regs;};
FIXME: Check and adjust for gcc-2.9x. */
#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) {}
/* Fix reloads known to cause suboptimal spilling. */
#define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, INDL, WIN) \
do \
{ \
if (cris_reload_address_legitimized (X, MODE, OPNUM, TYPE, INDL)) \
goto WIN; \
} \
while (0)
/* In CRIS, only the postincrement address mode depends thus,
since the increment depends on the size of the operand. */
#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \