Hi folks,
I have a backend hook (x86_64) for builtin function expansion, so
I have this:
expand_simple_binop (DImode, ASHIFT, op0,
GEN_INT (32),op0,1,OPTAB_DIRECT);
to generate op0 = op0<<32 (op0 is the first argument of this builtin
function, with type SIZE_T)
T
Hi,
I'm trying to expand a builtin functions into assembles, with
processing a little bit for the operands.
Like for the builtin function:
tcreate (arg0, arg1, arg2)
I'm trying to generate the assemble code (pseudo):
TCREATE arg0<<32|arg1, arg2
but I got the following error:
Hi Ian,
2012/4/23 Ian Lance Taylor :
> Feng LI writes:
>
>> Hi Ian,
>>
>> 2012/4/22 Ian Lance Taylor :
>>> Feng LI writes:
>>>
>>>> Yes, you are right. But how could I reference to a backend defined builtin
>>>> function
Hi Ian,
2012/4/22 Ian Lance Taylor :
> Feng LI writes:
>
>> Yes, you are right. But how could I reference to a backend defined builtin
>> function in the middle end (I need to generate the builtin function in the
>> middle end and expand it in x86 backend)?
>
>
Hi Ian,
2012/4/22 Ian Lance Taylor :
> Feng LI writes:
>
>> I generate builtin function directly in the middle end and and expand
>> the builtin function in the x86 backend to certain set of
>> instructions.
>>
>> I've defined x86 built
Hi,
I generate builtin function directly in the middle end and and expand
the builtin function in the x86 backend to certain set of
instructions.
I've defined x86 builtin functions in the gcc backend like this:
{ OPTION_MASK_ISA_TSTAR | OPTION_MASK_ISA_64BIT,
CODE_FOR_tstar_create, "__builtin_ia
Hi Andrew,
On Thu, Dec 8, 2011 at 11:48 PM, Andrew Pinski wrote:
> On Thu, Dec 8, 2011 at 1:47 PM, Feng LI wrote:
>> Hi,
>>
>> I'm extending the i386 instructions by using the builtins in the backend.
>> And generate the builtin functions in the middle end.
Hi,
I'm extending the i386 instructions by using the builtins in the backend.
And generate the builtin functions in the middle end. And would like
the generated builtin functions will be transformed to ASM code.
I tested the backend with a hand writing builtin functions, it *works*
well, but *not
Hi,
I'm building a function with
fread = build_decl (LOCATION, FUNCTION_DECL, get_identifier (name), type);
and then use it in gimple with
gimple gfread = gimple_build_call (fread, 1, offset);
gimple_call_set_lhs (fread, lhs);
But I need a cast here, since the lhs has a different type than the r
On Wed, Nov 16, 2011 at 12:18 PM, Joern Rennecke wrote:
> Quoting Ian Lance Taylor :
>
>> Offhand I don't know of any way to get the compiler to save CC for you
>> around your instruction. That's a stiff requirement.
>
> It's easy to do under explicit control of the pattern, using (a)
> match_scr
. I'm doing the split phase after "reload_completed".
2. Store the REG CC before CLC, and restore after CMOVC.
Is there some way to do that?
Thank you,
Feng
On Mon, Nov 14, 2011 at 7:59 AM, Ian Lance Taylor wrote:
> Feng LI writes:
>
>> I'm working on a gcc backend,
Hi,
I'm working on a gcc backend, we need to use the information of the
allocated hardware register to generate the code from builtin
functions. But at the context in ix86_expand_builtin, where I could
get the operands which the registers are pseudo registers
(REGNO(op)>FIRST_PSEUDO_REGISTER).
Do
Hi,
Is there an interface provided in GCC to clone the current function?
I searched in the source code but failed, just in case I'm going wrong.
Thanks,
Feng
Hi Richard,
On Thu, May 19, 2011 at 5:53 PM, Richard Guenther
wrote:
> On Thu, May 19, 2011 at 5:49 PM, Feng LI wrote:
>> Hi,
>>
>> I'm trying to outline a function and move all basic-blocks in the function
>> to different child functions. Only left 1
Hi,
I'm trying to outline a function and move all basic-blocks in the function
to different child functions. Only left 1 newly created bb in the original
function with newly inserted statements.
But I got an ICE when gcc call remove_ssa_form for the original function.
I debugged the code, it seem
May 18, 2011 at 5:01 PM, Feng LI wrote:
>> Hi,
>>
>> I have the code like:
>> a_2 = 5; g1
>> b_3 = 6; g2
>> d_4 = a_2 + b_3; g3
>>
>> And I'd like to insert "tmp.globe = a
Hi,
I have the code like:
a_2 = 5; g1
b_3 = 6; g2
d_4 = a_2 + b_3;g3
And I'd like to insert "tmp.globe = a_2" just after the definition of
a_2 (after g1), so that the code will be:
a_2 = 5; g1
tmp.globe
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 argume
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
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
&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
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