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sparc.c (sparc_extra_constraint_check): New function, implementing EXTRA_CONSTRAINTS.

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2002-04-09  David S. Miller  <davem@redhat.com>

	* config/sparc/sparc.c (sparc_extra_constraint_check): New
	function, implementing EXTRA_CONSTRAINTS.  For memory constraints,
	allow reloading pseudos.
	* config/sparc/sparc.h (EXTRA_CONSTRAINTS): Use it.
	* config/sparc/sparc-protos.h: Declare it.

	* config/sparc/sparc.c (const64_is_2insns): Kill signed vs.
	unsigned comparison warning.
	(output_restore_regs): Mark leaf_function as unused.

From-SVN: r52080
This commit is contained in:
David S. Miller 2002-04-09 07:52:03 -07:00 committed by David S. Miller
parent cd6af0c13a
commit f451b552cf
4 changed files with 85 additions and 33 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,15 @@
2002-04-09 David S. Miller <davem@redhat.com>
* config/sparc/sparc.c (sparc_extra_constraint_check): New
function, implementing EXTRA_CONSTRAINTS. For memory constraints,
allow reloading pseudos.
* config/sparc/sparc.h (EXTRA_CONSTRAINTS): Use it.
* config/sparc/sparc-protos.h: Declare it.
* config/sparc/sparc.c (const64_is_2insns): Kill signed vs.
unsigned comparison warning.
(output_restore_regs): Mark leaf_function as unused.
Tue Apr 9 09:35:45 2002 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* expr.c (is_aligning_offset): New function.

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

@ -117,6 +117,7 @@ extern char *sparc_v8plus_shift PARAMS ((rtx *, rtx, const char *));
32 bits of REG are 0 before INSN. */
extern int sparc_check_64 PARAMS ((rtx, rtx));
extern rtx gen_df_reg PARAMS ((rtx, int));
extern int sparc_extra_constraint_check PARAMS ((rtx, char, int));
#endif /* RTX_CODE */
#endif /* __SPARC_PROTOS_H__ */

66
gcc/config/sparc/sparc.c
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@ -1861,7 +1861,7 @@ const64_is_2insns (high_bits, low_bits)
int highest_bit_set, lowest_bit_set, all_bits_between_are_set;
if (high_bits == 0
|| high_bits == -1)
|| high_bits == 0xffffffff)
return 1;
analyze_64bit_constant (high_bits, low_bits,
@ -3647,7 +3647,7 @@ sparc_nonflat_function_prologue (file, size, leaf_function)
static void
output_restore_regs (file, leaf_function)
FILE *file;
int leaf_function;
int leaf_function ATTRIBUTE_UNUSED;
{
int offset, n_regs;
const char *base;
@ -8609,3 +8609,65 @@ sparc_elf_asm_named_section (name, flags)
fputc ('\n', asm_out_file);
}
#endif /* OBJECT_FORMAT_ELF */
int
sparc_extra_constraint_check (op, c, strict)
rtx op;
char c;
int strict;
{
int reload_ok_mem;
if (TARGET_ARCH64
&& (c == 'T' || c == 'U'))
return 0;
switch (c)
{
case 'Q':
return fp_sethi_p (op);
case 'R':
return fp_mov_p (op);
case 'S':
return fp_high_losum_p (op);
case 'U':
if (! strict
|| (GET_CODE (op) == REG
&& (REGNO (op) < FIRST_PSEUDO_REGISTER
|| reg_renumber[REGNO (op)] >= 0)))
return register_ok_for_ldd (op);
return 0;
case 'W':
case 'T':
break;
default:
return 0;
}
/* Our memory extra constraints have to emulate the
behavior of 'm' and 'o' in order for reload to work
correctly. */
if (GET_CODE (op) == MEM)
{
reload_ok_mem = 0;
if ((TARGET_ARCH64 || mem_min_alignment (op, 8))
&& (! strict
|| strict_memory_address_p (Pmode, XEXP (op, 0))))
reload_ok_mem = 1;
}
else
{
reload_ok_mem = (reload_in_progress
&& GET_CODE (op) == REG
&& REGNO (op) >= FIRST_PSEUDO_REGISTER
&& reg_renumber [REGNO (op)] < 0);
}
return reload_ok_mem;
}

39
gcc/config/sparc/sparc.h
View File

@ -2104,12 +2104,6 @@ do { \
'W' handles the memory operand when moving operands in/out
of 'e' constraint floating point registers. */
#define EXTRA_CONSTRAINT_BASE(OP, C) \
((C) == 'Q' ? fp_sethi_p(OP) \
: (C) == 'R' ? fp_mov_p(OP) \
: (C) == 'S' ? fp_high_losum_p(OP) \
: 0)
#ifndef REG_OK_STRICT
/* Nonzero if X is a hard reg that can be used as an index
@ -2124,18 +2118,13 @@ do { \
#define REG_OK_FOR_BASE_P(X) REG_OK_FOR_INDEX_P (X)
/* 'T', 'U' are for aligned memory loads which aren't needed for arch64.
'W' is like 'T' but is assumed true on arch64. */
'W' is like 'T' but is assumed true on arch64.
#define EXTRA_CONSTRAINT(OP, C) \
(EXTRA_CONSTRAINT_BASE(OP, C) \
|| ((! TARGET_ARCH64 && (C) == 'T') \
? (mem_min_alignment (OP, 8)) \
: ((! TARGET_ARCH64 && (C) == 'U') \
? (register_ok_for_ldd (OP)) \
: ((C) == 'W' \
? ((TARGET_ARCH64 && GET_CODE (OP) == MEM) \
|| mem_min_alignment (OP, 8)) \
: 0))))
Remember to accept pseudo-registers for memory constraints if reload is
in progress. */
#define EXTRA_CONSTRAINT(OP, C) \
sparc_extra_constraint_check(OP, C, 0)
#else
@ -2144,20 +2133,8 @@ do { \
/* Nonzero if X is a hard reg that can be used as a base reg. */
#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
#define EXTRA_CONSTRAINT(OP, C) \
(EXTRA_CONSTRAINT_BASE(OP, C) \
|| ((! TARGET_ARCH64 && (C) == 'T') \
? mem_min_alignment (OP, 8) && strict_memory_address_p (Pmode, XEXP (OP, 0)) \
: ((! TARGET_ARCH64 && (C) == 'U') \
? (GET_CODE (OP) == REG \
&& (REGNO (OP) < FIRST_PSEUDO_REGISTER \
|| reg_renumber[REGNO (OP)] >= 0) \
&& register_ok_for_ldd (OP)) \
: ((C) == 'W' \
? (((TARGET_ARCH64 && GET_CODE (OP) == MEM) \
|| mem_min_alignment (OP, 8)) \
&& strict_memory_address_p (Pmode, XEXP (OP, 0))) \
: 0))))
#define EXTRA_CONSTRAINT(OP, C) \
sparc_extra_constraint_check(OP, C, 1)
#endif