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re PR target/50566 ([avr]: Add support for better logging similar to -mdeb)

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PR target/50566
	* config/avr/avr-protos.h (avr_legitimize_reload_address): New
	prototype.
	* config/avr/avr.h (LEGITIMIZE_RELOAD_ADDRESS): Copy worker code
	from here...
	* config/avr/avr.c (avr_legitimize_reload_address) ...to this new
	function.  Log if avr_log.legitimize_reload_address.

From-SVN: r179494
This commit is contained in:
Georg-Johann Lay 2011-10-04 08:23:03 +00:00 committed by Georg-Johann Lay
parent 437bcafa1a
commit 36a50ab6e0
4 changed files with 103 additions and 45 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2011-10-04 Georg-Johann Lay <avr@gjlay.de>
PR target/50566
* config/avr/avr-protos.h (avr_legitimize_reload_address): New
prototype.
* config/avr/avr.h (LEGITIMIZE_RELOAD_ADDRESS): Copy worker code
from here...
* config/avr/avr.c (avr_legitimize_reload_address) ...to this new
function. Log if avr_log.legitimize_reload_address.
2011-10-04 Eric Botcazou <ebotcazou@adacore.com>
* config/sparc/sparc.c (sparc_fold_builtin): Use a sequence of tests.

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

@ -106,6 +106,7 @@ extern RTX_CODE avr_normalize_condition (RTX_CODE condition);
extern void out_shift_with_cnt (const char *templ, rtx insn,
rtx operands[], int *len, int t_len);
extern rtx avr_incoming_return_addr_rtx (void);
extern rtx avr_legitimize_reload_address (rtx, enum machine_mode, int, int, int, int, rtx (*)(rtx,int));
#endif /* RTX_CODE */
#ifdef REAL_VALUE_TYPE

81
gcc/config/avr/avr.c
View File

@ -1290,6 +1290,87 @@ avr_legitimize_address (rtx x, rtx oldx, enum machine_mode mode)
}
/* Implement `LEGITIMIZE_RELOAD_ADDRESS'. */
/* This will allow register R26/27 to be used where it is no worse than normal
base pointers R28/29 or R30/31. For example, if base offset is greater
than 63 bytes or for R++ or --R addressing. */
rtx
avr_legitimize_reload_address (rtx x, enum machine_mode mode,
int opnum, int type, int addr_type,
int ind_levels ATTRIBUTE_UNUSED,
rtx (*mk_memloc)(rtx,int))
{
if (avr_log.legitimize_reload_address)
avr_edump ("\n%?:%m %r\n", mode, x);
if (1 && (GET_CODE (x) == POST_INC
|| GET_CODE (x) == PRE_DEC))
{
push_reload (XEXP (x, 0), XEXP (x, 0), &XEXP (x, 0), &XEXP (x, 0),
POINTER_REGS, GET_MODE (x), GET_MODE (x), 0, 0,
opnum, RELOAD_OTHER);
if (avr_log.legitimize_reload_address)
avr_edump (" RCLASS = %R\n IN = %r\n OUT = %r\n",
POINTER_REGS, XEXP (x, 0), XEXP (x, 0));
return x;
}
if (GET_CODE (x) == PLUS
&& REG_P (XEXP (x, 0))
&& 0 == reg_equiv_constant (REGNO (XEXP (x, 0)))
&& CONST_INT_P (XEXP (x, 1))
&& INTVAL (XEXP (x, 1)) >= 1)
{
bool fit = INTVAL (XEXP (x, 1)) <= MAX_LD_OFFSET (mode);
if (fit)
{
if (reg_equiv_address (REGNO (XEXP (x, 0))) != 0)
{
int regno = REGNO (XEXP (x, 0));
rtx mem = mk_memloc (x, regno);
push_reload (XEXP (mem, 0), NULL_RTX, &XEXP (mem, 0), NULL,
POINTER_REGS, Pmode, VOIDmode, 0, 0,
1, addr_type);
if (avr_log.legitimize_reload_address)
avr_edump (" RCLASS = %R\n IN = %r\n OUT = %r\n",
POINTER_REGS, XEXP (mem, 0), NULL_RTX);
push_reload (mem, NULL_RTX, &XEXP (x, 0), NULL,
BASE_POINTER_REGS, GET_MODE (x), VOIDmode, 0, 0,
opnum, type);
if (avr_log.legitimize_reload_address)
avr_edump (" RCLASS = %R\n IN = %r\n OUT = %r\n",
BASE_POINTER_REGS, mem, NULL_RTX);
return x;
}
}
else if (! (frame_pointer_needed
&& XEXP (x, 0) == frame_pointer_rtx))
{
push_reload (x, NULL_RTX, &x, NULL,
POINTER_REGS, GET_MODE (x), VOIDmode, 0, 0,
opnum, type);
if (avr_log.legitimize_reload_address)
avr_edump (" RCLASS = %R\n IN = %r\n OUT = %r\n",
POINTER_REGS, x, NULL_RTX);
return x;
}
}
return NULL_RTX;
}
/* Helper function to print assembler resp. track instruction
sequence lengths.

56
gcc/config/avr/avr.h
View File

@ -385,51 +385,17 @@ typedef struct avr_args {
(REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
#define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
/* LEGITIMIZE_RELOAD_ADDRESS will allow register R26/27 to be used, where it
is no worse than normal base pointers R28/29 and R30/31. For example:
If base offset is greater than 63 bytes or for R++ or --R addressing. */
#define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
do { \
if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC)) \
{ \
push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0), \
POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0, \
OPNUM, RELOAD_OTHER); \
goto WIN; \
} \
if (GET_CODE (X) == PLUS \
&& REG_P (XEXP (X, 0)) \
&& (reg_equiv_constant (REGNO (XEXP (X, 0))) == 0) \
&& GET_CODE (XEXP (X, 1)) == CONST_INT \
&& INTVAL (XEXP (X, 1)) >= 1) \
{ \
int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE)); \
if (fit) \
{ \
if (reg_equiv_address (REGNO (XEXP (X, 0))) != 0) \
{ \
int regno = REGNO (XEXP (X, 0)); \
rtx mem = make_memloc (X, regno); \
push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL, \
POINTER_REGS, Pmode, VOIDmode, 0, 0, \
1, ADDR_TYPE (TYPE)); \
push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL, \
BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
OPNUM, TYPE); \
goto WIN; \
} \
} \
else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
{ \
push_reload (X, NULL_RTX, &X, NULL, \
POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
OPNUM, TYPE); \
goto WIN; \
} \
} \
} while(0)
#define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_L,WIN) \
do { \
rtx new_x = avr_legitimize_reload_address (X, MODE, OPNUM, TYPE, \
ADDR_TYPE (TYPE), \
IND_L, make_memloc); \
if (new_x) \
{ \
X = new_x; \
goto WIN; \
} \
} while (0)
#define BRANCH_COST(speed_p, predictable_p) 0