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Re: PATCH: Add ifunc attribute
On Fri, Jun 26, 2009 at 9:26 AM, Richard
Guenther<richard.guenther@gmail.com> wrote:
> On Fri, Jun 26, 2009 at 6:16 PM, H.J. Lu<hjl.tools@gmail.com> wrote:
>> On Fri, Jun 26, 2009 at 9:12 AM, Richard
>> Guenther<richard.guenther@gmail.com> wrote:
>>> On Fri, Jun 26, 2009 at 6:03 PM, H.J. Lu<hjl.tools@gmail.com> wrote:
>>>> On Fri, Jun 26, 2009 at 8:47 AM, Paolo Bonzini<bonzini@gnu.org> wrote:
>>>>>> How do you propose to support C++?
>>>>>
>>>>> Why wouldn't Roland's proposal work with C++?
>>>>>
>>>>
>>>> I am not sure it will work for C++, especially for
>>>> member functions.
>>>
>>> asm() with a properly mangled name should work.
>>>
>>> Richard.
>>
>> Here is a C++ example. ?Option 3 works nicely.
>
> Does it work with virtual functions?
The ifunc attribute should only affect the function
definition. The ifunc attribute shouldn't be inherited.
H.J.
---
>> ---
>> class ifunc
>> {
>> private:
>> ?int foo1 (int);
>> ?int foo2 (float);
>>
>> public:
>> ?int foo (int);
>> ?int foo (float);
>> ?int bar (int);
>> ?int bar (float);
>> };
>>
>> int
>> __attribute__ ((ifunc))
>> ifunc::foo (int)
>> {
>> ?return &ifunc::foo1;
>> }
>>
>> int
>> __attribute__ ((ifunc))
>> ifunc::foo (float)
>> {
>> ?return &ifunc::foo2;
>> }
>>
>> int
>> ifunc::bar (int x)
>> {
>> ?return foo (x);
>> }
>>
>> int
>> ifunc::bar (float x)
>> {
>> ?return foo (x);
>> }
>> ---
>>
>> How do you make it to work with other options?
>>
>> --
>> H.J.
>>
>
--
H.J.