2014-08-28 1:39 GMT+04:00 Jeff Law <l...@redhat.com>:
> On 08/26/14 15:42, Ilya Enkovich wrote:
>>
>> diff --git a/gcc/calls.c b/gcc/calls.c
>> index 4285ec1..85dae6b 100644
>> --- a/gcc/calls.c
>> +++ b/gcc/calls.c
>> @@ -1122,6 +1122,14 @@ initialize_argument_information (int num_actuals
>> ATTRIBUTE_UNUSED,
>> call_expr_arg_iterator iter;
>> tree arg;
>>
>> + if (targetm.calls.implicit_pic_arg (fndecl ? fndecl : fntype))
>> + {
>> + gcc_assert (pic_offset_table_rtx);
>> + args[j].tree_value = make_tree (ptr_type_node,
>> + pic_offset_table_rtx);
>> + j--;
>> + }
>> +
>> if (struct_value_addr_value)
>> {
>> args[j].tree_value = struct_value_addr_value;
>
> So why do you need this? Can't this be handled in the call/call_value
> expanders or what about attaching the use to CALL_INSN_FUNCTION_USAGE from
> inside ix86_expand_call? Basically I'm not seeing the need for another
> target hook here. I think that would significantly simply the patch as
> well.
GOT base address become an additional implicit arg with EBX relaxed
and I handled it as all other args. I can move EBX initialization into
ix86_expand_call. Would still need some hint from target to init
pic_offset_table_rtx with proper value in the beginning of function
expand.
Thanks,
Ilya
>
>
> Jeff
