On 04/13/2011 09:05 AM, Feng LI wrote:
>> You need to expand builtins yourself, a "named" expander doesn't do
>> that for you.
>
> I'm not sure I understand this, I use define_expand to expand
> the builtin function to RTX, and then define_insn * to match the
> RTX and generate code. It seems it d
On Wed, Apr 13, 2011 at 5:48 PM, Richard Guenther
wrote:
> On Wed, Apr 13, 2011 at 5:45 PM, Feng LI wrote:
>> On Wed, Apr 13, 2011 at 5:32 PM, Ian Lance Taylor wrote:
>>> Feng LI writes:
>>>
I use unspec_volatile for a function with void arguments and
void return value for some initia
On Wed, Apr 13, 2011 at 5:45 PM, Feng LI wrote:
> On Wed, Apr 13, 2011 at 5:32 PM, Ian Lance Taylor wrote:
>> Feng LI writes:
>>
>>> I use unspec_volatile for a function with void arguments and
>>> void return value for some initialization work. But it didn't generate
>>> code in this case. I th
On Wed, Apr 13, 2011 at 5:32 PM, Ian Lance Taylor wrote:
> Feng LI writes:
>
>> I use unspec_volatile for a function with void arguments and
>> void return value for some initialization work. But it didn't generate
>> code in this case. I think probably I need to add more restrictions
>> some whe
On Wed, Apr 13, 2011 at 5:32 PM, Ian Lance Taylor wrote:
> Feng LI writes:
>
>> I use unspec_volatile for a function with void arguments and
>> void return value for some initialization work. But it didn't generate
>> code in this case. I think probably I need to add more restrictions
>> some whe
Feng LI writes:
> I use unspec_volatile for a function with void arguments and
> void return value for some initialization work. But it didn't generate
> code in this case. I think probably I need to add more restrictions
> some where but I don't know why and how. The code looks like:
>
> extern
Hi Ian,
Thanks for your comments.
On Wed, Apr 13, 2011 at 5:02 PM, Ian Lance Taylor wrote:
> Feng LI writes:
>
>> I'm currently try to add intrinsic functions to extend the x86 instruction
>> set. Encountered a problem when the intrinsic function's return value
>> is void, where the asm will no
Feng LI writes:
> I'm currently try to add intrinsic functions to extend the x86 instruction
> set. Encountered a problem when the intrinsic function's return value
> is void, where the asm will not generate in this case.
>
> the intrinsic function looks like:
>
> extern void
> __attribute__((__g
Hi,
I'm currently try to add intrinsic functions to extend the x86 instruction
set. Encountered a problem when the intrinsic function's return value
is void, where the asm will not generate in this case.
the intrinsic function looks like:
extern void
__attribute__((__gnu_inline__, __always_inlin
