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mips-protos.h (function_arg_boundary): Declare. 

* config/mips/mips-protos.h (function_arg_boundary): Declare.
	* config/mips/mips.h (PARM_BOUNDARY): Simplify definition.
	(STACK_BOUNDARY, MIPS_STACK_ALIGN): Likewise.
	(FUNCTION_ARG_BOUNDARY): Use new function_arg_boundary function.
	* config/mips/mips.c (function_arg_boundary): New function.
	Impose a maximum alignment of STACK_BOUNDARY.

From-SVN: r91370
This commit is contained in:
Richard Sandiford 2004-11-27 09:46:43 +00:00 committed by Richard Sandiford
parent b78b8bd83e
commit e64ca6c474
4 changed files with 32 additions and 21 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2004-11-27 Richard Sandiford <rsandifo@redhat.com>
* config/mips/mips-protos.h (function_arg_boundary): Declare.
* config/mips/mips.h (PARM_BOUNDARY): Simplify definition.
(STACK_BOUNDARY, MIPS_STACK_ALIGN): Likewise.
(FUNCTION_ARG_BOUNDARY): Use new function_arg_boundary function.
* config/mips/mips.c (function_arg_boundary): New function.
Impose a maximum alignment of STACK_BOUNDARY.
2004-11-27 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/17825

1
gcc/config/mips/mips-protos.h
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@ -143,6 +143,7 @@ extern struct rtx_def *function_arg (const CUMULATIVE_ARGS *,
enum machine_mode, tree, int);
extern int function_arg_partial_nregs (const CUMULATIVE_ARGS *,
enum machine_mode, tree, int);
extern int function_arg_boundary (enum machine_mode, tree);
extern bool mips_pad_arg_upward (enum machine_mode, tree);
extern bool mips_pad_reg_upward (enum machine_mode, tree);
extern void mips_va_start (tree, rtx);

17
gcc/config/mips/mips.c
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@ -3326,6 +3326,23 @@ function_arg_partial_nregs (const CUMULATIVE_ARGS *cum,
}
/* Implement FUNCTION_ARG_BOUNDARY. Every parameter gets at least
PARM_BOUNDARY bits of alignment, but will be given anything up
to STACK_BOUNDARY bits if the type requires it. */
int
function_arg_boundary (enum machine_mode mode, tree type)
{
unsigned int alignment;
alignment = type ? TYPE_ALIGN (type) : GET_MODE_ALIGNMENT (mode);
if (alignment < PARM_BOUNDARY)
alignment = PARM_BOUNDARY;
if (alignment > STACK_BOUNDARY)
alignment = STACK_BOUNDARY;
return alignment;
}
/* Return true if FUNCTION_ARG_PADDING (MODE, TYPE) should return
upward rather than downward. In other words, return true if the
first byte of the stack slot has useful data, false if the last

26
gcc/config/mips/mips.h
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@ -1300,10 +1300,7 @@ extern const struct mips_cpu_info *mips_tune_info;
#endif
/* Allocation boundary (in *bits*) for storing arguments in argument list. */
#define PARM_BOUNDARY ((mips_abi == ABI_O64 \
|| TARGET_NEWABI \
|| (mips_abi == ABI_EABI && TARGET_64BIT)) ? 64 : 32)
#define PARM_BOUNDARY BITS_PER_WORD
/* Allocation boundary (in *bits*) for the code of a function. */
#define FUNCTION_BOUNDARY 32
@ -2145,7 +2142,7 @@ extern enum reg_class mips_char_to_class[256];
`current_function_outgoing_args_size'. */
#define OUTGOING_REG_PARM_STACK_SPACE
#define STACK_BOUNDARY ((TARGET_OLDABI || mips_abi == ABI_EABI) ? 64 : 128)
#define STACK_BOUNDARY (TARGET_NEWABI ? 128 : 64)
#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
@ -2285,18 +2282,7 @@ typedef struct mips_args {
#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED)
/* If defined, a C expression that gives the alignment boundary, in
bits, of an argument with the specified mode and type. If it is
not defined, `PARM_BOUNDARY' is used for all arguments. */
#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
(((TYPE) != 0) \
? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY) \
? PARM_BOUNDARY \
: TYPE_ALIGN(TYPE)) \
: ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY) \
? PARM_BOUNDARY \
: GET_MODE_ALIGNMENT(MODE)))
#define FUNCTION_ARG_BOUNDARY function_arg_boundary
#define FUNCTION_ARG_PADDING(MODE, TYPE) \
(mips_pad_arg_upward (MODE, TYPE) ? upward : downward)
@ -2318,10 +2304,8 @@ typedef struct mips_args {
/* Treat LOC as a byte offset from the stack pointer and round it up
to the next fully-aligned offset. */
#define MIPS_STACK_ALIGN(LOC) \
((TARGET_OLDABI || mips_abi == ABI_EABI) \
? ((LOC) + 7) & ~7 \
: ((LOC) + 15) & ~15)
#define MIPS_STACK_ALIGN(LOC) \
(TARGET_NEWABI ? ((LOC) + 15) & -16 : ((LOC) + 7) & -8)
/* Implement `va_start' for varargs and stdarg. */