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rx.c (rx_function_value): Small integer types are promotes to SImode.

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* config/rx/rx.c (rx_function_value): Small integer types are
        promotes to SImode.
        (rx_promote_function_mode): New function.
        (TARGET_PROMOTE_FUNCTION_MODE): Define.

From-SVN: r165690
This commit is contained in:
Nick Clifton 2010-10-19 10:26:31 +00:00 committed by Nick Clifton
parent 4620272938
commit e2f289f3c7
2 changed files with 36 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2010-10-19 Nick Clifton <nickc@redhat.com>
* config/rx/rx.c (rx_function_value): Small integer types are
promotes to SImode.
(rx_promote_function_mode): New function.
(TARGET_PROMOTE_FUNCTION_MODE): Define.
2010-10-19 Nick Clifton <nickc@redhat.com>
* config/mep/mep.c (mep_print_operand): Use

30
gcc/config/rx/rx.c
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@ -830,7 +830,32 @@ rx_function_value (const_tree ret_type,
const_tree fn_decl_or_type ATTRIBUTE_UNUSED,
bool outgoing ATTRIBUTE_UNUSED)
{
return gen_rtx_REG (TYPE_MODE (ret_type), FUNC_RETURN_REGNUM);
enum machine_mode mode = TYPE_MODE (ret_type);
/* RX ABI specifies that small integer types are
promoted to int when returned by a function. */
if (GET_MODE_SIZE (mode) > 0 && GET_MODE_SIZE (mode) < 4)
return gen_rtx_REG (SImode, FUNC_RETURN_REGNUM);
return gen_rtx_REG (mode, FUNC_RETURN_REGNUM);
}
/* TARGET_PROMOTE_FUNCTION_MODE must behave in the same way with
regard to function returns as does TARGET_FUNCTION_VALUE. */
static enum machine_mode
rx_promote_function_mode (const_tree type ATTRIBUTE_UNUSED,
enum machine_mode mode,
int * punsignedp,
const_tree funtype ATTRIBUTE_UNUSED,
int for_return)
{
if (for_return != 1
|| GET_MODE_SIZE (mode) >= 4
|| GET_MODE_SIZE (mode) < 1)
return mode;
return SImode;
}
static bool
@ -2825,6 +2850,9 @@ rx_memory_move_cost (enum machine_mode mode, enum reg_class regclass, bool in)
#undef TARGET_OPTION_OVERRIDE
#define TARGET_OPTION_OVERRIDE rx_option_override
#undef TARGET_PROMOTE_FUNCTION_MODE
#define TARGET_PROMOTE_FUNCTION_MODE rx_promote_function_mode
#undef TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE
#define TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE rx_override_options_after_change