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h8300-protos.h: Provide prototypes for h8300_legitimate_constant_p and h8300_legitimate_address_p.

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* config/h8300/h8300-protos.h: Provide prototypes for
	h8300_legitimate_constant_p and h8300_legitimate_address_p.
	* config/h8300/h8300.c (h8300_legitimate_constant_p): New.
	(h8300_rtx_ok_for_base_p): Likewise.
	(h8300_legitimate_address_p): Likewise.
	* config/h8300/h8300.h (LEGITIMATE_CONSTANT_P): Use
	h8300_legitimate_constant_p.
	(RTX_OK_FOR_BASE_P): Remove.
	(GO_IF_LEGITIMATE_ADDRESS): Use h8300_legitimate_address_p.

From-SVN: r76484
This commit is contained in:
Kazu Hirata 2004-01-24 06:47:03 +00:00 committed by Kazu Hirata
parent ca04c5a93c
commit d002220017
4 changed files with 78 additions and 26 deletions
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12
gcc/ChangeLog
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@ -1,3 +1,15 @@
2004-01-24 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300-protos.h: Provide prototypes for
h8300_legitimate_constant_p and h8300_legitimate_address_p.
* config/h8300/h8300.c (h8300_legitimate_constant_p): New.
(h8300_rtx_ok_for_base_p): Likewise.
(h8300_legitimate_address_p): Likewise.
* config/h8300/h8300.h (LEGITIMATE_CONSTANT_P): Use
h8300_legitimate_constant_p.
(RTX_OK_FOR_BASE_P): Remove.
(GO_IF_LEGITIMATE_ADDRESS): Use h8300_legitimate_address_p.
2004-01-24 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.h (REG_OK_FOR_INDEX_NONSTRICT_P): New.

3
gcc/config/h8300/h8300-protos.h
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@ -81,6 +81,9 @@ extern int byte_accesses_mergeable_p (rtx, rtx);
extern int same_cmp_preceding_p (rtx);
extern int same_cmp_following_p (rtx);
extern int h8300_legitimate_constant_p (rtx);
extern int h8300_legitimate_address_p (rtx, int);
/* Used in builtins.c */
extern rtx h8300_return_addr_rtx (int, rtx);
#endif /* RTX_CODE */

45
gcc/config/h8300/h8300.c
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@ -4552,6 +4552,51 @@ h8300_hard_regno_rename_ok (unsigned int old_reg ATTRIBUTE_UNUSED,
return 1;
}
/* Return nonzero if X is a legitimate constant. */
int
h8300_legitimate_constant_p (rtx x ATTRIBUTE_UNUSED)
{
return 1;
}
/* Return nonzero if X is a REG or SUBREG suitable as a base register. */
static int
h8300_rtx_ok_for_base_p (rtx x, int strict)
{
/* Strip off SUBREG if any. */
if (GET_CODE (x) == SUBREG)
x = SUBREG_REG (x);
return (REG_P (x)
&& (strict
? REG_OK_FOR_BASE_STRICT_P (x)
: REG_OK_FOR_BASE_NONSTRICT_P (x)));
}
/* Return nozero if X is a legitimate address. On the H8/300, a
legitimate address has the form REG, REG+CONSTANT_ADDRESS or
CONSTANT_ADDRESS. */
int
h8300_legitimate_address_p (rtx x, int strict)
{
/* The register indirect addresses like @er0 is always valid. */
if (h8300_rtx_ok_for_base_p (x, strict))
return 1;
if (CONSTANT_ADDRESS_P (x))
return 1;
if (GET_CODE (x) == PLUS
&& CONSTANT_ADDRESS_P (XEXP (x, 1))
&& h8300_rtx_ok_for_base_p (XEXP (x, 0), strict))
return 1;
return 0;
}
/* Perform target dependent optabs initialization. */
static void

44
gcc/config/h8300/h8300.h
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@ -796,7 +796,7 @@ struct cum_arg
/* Nonzero if the constant value X is a legitimate general operand.
It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
#define LEGITIMATE_CONSTANT_P(X) (1)
#define LEGITIMATE_CONSTANT_P(X) (h8300_legitimate_constant_p (X))
/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
and check its validity for a certain class.
@ -879,31 +879,23 @@ struct cum_arg
(C) == 'U' ? OK_FOR_U (OP) : \
0)
/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
that is a valid memory address for an instruction.
The MODE argument is the machine mode for the MEM expression
that wants to use this address.
The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
except for CONSTANT_ADDRESS_P which is actually
machine-independent.
On the H8/300, a legitimate address has the form
REG, REG+CONSTANT_ADDRESS or CONSTANT_ADDRESS. */
/* Accept either REG or SUBREG where a register is valid. */
#define RTX_OK_FOR_BASE_P(X) \
((REG_P (X) && REG_OK_FOR_BASE_P (X)) \
|| (GET_CODE (X) == SUBREG && REG_P (SUBREG_REG (X)) \
&& REG_OK_FOR_BASE_P (SUBREG_REG (X))))
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
if (RTX_OK_FOR_BASE_P (X)) goto ADDR; \
if (CONSTANT_ADDRESS_P (X)) goto ADDR; \
if (GET_CODE (X) == PLUS \
&& CONSTANT_ADDRESS_P (XEXP (X, 1)) \
&& RTX_OK_FOR_BASE_P (XEXP (X, 0))) goto ADDR;
#ifndef REG_OK_STRICT
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
do \
{ \
if (h8300_legitimate_address_p ((X), 0)) \
goto ADDR; \
} \
while (0)
#else
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
do \
{ \
if (h8300_legitimate_address_p ((X), 1)) \
goto ADDR; \
} \
while (0)
#endif
/* Try machine-dependent ways of modifying an illegitimate address
to be legitimate. If we find one, return the new, valid address.