if (align_words + n_units > GP_ARG_NUM_REG)
/* Not all of the arg fits in gprs. Say that it goes in memory too,
using a magic NULL_RTX component.
- FIXME: This is not strictly correct. Only some of the arg
- belongs in memory, not all of it. However, there isn't any way
- to do this currently, apart from building rtx descriptions for
- the pieces of memory we want stored. Due to bugs in the generic
- code we can't use the normal function_arg_partial_nregs scheme
- with the PARALLEL arg description we emit here.
- In any case, the code to store the whole arg to memory is often
- more efficient than code to store pieces, and we know that space
- is available in the right place for the whole arg. */
- /* FIXME: This should be fixed since the conversion to
- TARGET_ARG_PARTIAL_BYTES. */
+ This is not strictly correct. Only some of the arg belongs in
+ memory, not all of it. However, the normal scheme using
+ function_arg_partial_nregs can result in unusual subregs, eg.
+ (subreg:SI (reg:DF) 4), which are not handled well. The code to
+ store the whole arg to memory is often more efficient than code
+ to store pieces, and we know that space is available in the right
+ place for the whole arg. */
rvec[k++] = gen_rtx_EXPR_LIST (VOIDmode, NULL_RTX, const0_rtx);
i = 0;
include the portion actually in registers here. */
enum machine_mode rmode = TARGET_32BIT ? SImode : DImode;
rtx off;
- int i=0;
- if (align_words + n_words > GP_ARG_NUM_REG
- && (TARGET_32BIT && TARGET_POWERPC64))
+ int i = 0;
+ if (align_words + n_words > GP_ARG_NUM_REG)
/* Not all of the arg fits in gprs. Say that it
goes in memory too, using a magic NULL_RTX
component. Also see comment in
align_words = rs6000_parm_start (mode, type, cum->words);
- if (USE_FP_FOR_ARG_P (cum, mode, type)
+ if (USE_FP_FOR_ARG_P (cum, mode, type))
+ {
/* If we are passing this arg in the fixed parameter save area
(gprs or memory) as well as fprs, then this function should
- return the number of bytes passed in the parameter save area
- rather than bytes passed in fprs. */
- && !(type
- && (cum->nargs_prototype <= 0
- || (DEFAULT_ABI == ABI_AIX
- && TARGET_XL_COMPAT
- && align_words >= GP_ARG_NUM_REG))))
- {
- if (cum->fregno + ((GET_MODE_SIZE (mode) + 7) >> 3) > FP_ARG_MAX_REG + 1)
+ return the number of partial bytes passed in the parameter
+ save area rather than partial bytes passed in fprs. */
+ if (type
+ && (cum->nargs_prototype <= 0
+ || (DEFAULT_ABI == ABI_AIX
+ && TARGET_XL_COMPAT
+ && align_words >= GP_ARG_NUM_REG)))
+ return 0;
+ else if (cum->fregno + ((GET_MODE_SIZE (mode) + 7) >> 3)
+ > FP_ARG_MAX_REG + 1)
ret = (FP_ARG_MAX_REG + 1 - cum->fregno) * 8;
else if (cum->nargs_prototype >= 0)
return 0;