http://gcc.gnu.org/ml/gcc-patches/2011-07/msg02424.html
Richard Henderson wrote:
> On 07/27/2011 09:12 AM, Georg-Johann Lay wrote:
>> PR target/49313
>> * config/avr/libgcc.S (__ffshi2): Don't skip 2-word instruction.
>> (__ctzsi2): Result for 0 may be undefined.
>> (__ctzhi2):
On 07/27/2011 09:12 AM, Georg-Johann Lay wrote:
> PR target/49313
> * config/avr/libgcc.S (__ffshi2): Don't skip 2-word instruction.
> (__ctzsi2): Result for 0 may be undefined.
> (__ctzhi2): Result for 0 may be undefined.
> (__popcounthi2): Don't clobber r30. Use __po
This patch is to finalize the work on PR49313, i.e. better libgcc
implementation of some functions like bswap, counting zeros,
parity and popcount.
These functions are already implemented in libgcc.
This patch now provides a better integration of these functions:
the calls are no more emit as ord
Richard Henderson schrieb:
> On 06/17/2011 02:20 AM, Georg-Johann Lay wrote:
>> Richard Henderson schrieb:
>>> On 06/15/2011 02:47 AM, Georg-Johann Lay wrote:
>>
>> Yes, you are right. Following patchlet ok?
>>
>> Johann
>>
>> * config/avr/libgcc.S (__ctzsi2, __ctzhi2):
>> Map zero to 255
On 06/17/2011 02:20 AM, Georg-Johann Lay wrote:
> Richard Henderson schrieb:
>> On 06/15/2011 02:47 AM, Georg-Johann Lay wrote:
>>> +#if defined (L_loop_ffsqi2)
>>> +;; Helper for ffshi2, ffssi2
>>> +;; r25:r24 = r26 + zero_extend16 (ffs8(r24))
>>> +;; r24 must be != 0
>>> +;; clobbers: r26
>>> +DE
Richard Henderson schrieb:
> On 06/15/2011 02:47 AM, Georg-Johann Lay wrote:
>> +#if defined (L_loop_ffsqi2)
>> +;; Helper for ffshi2, ffssi2
>> +;; r25:r24 = r26 + zero_extend16 (ffs8(r24))
>> +;; r24 must be != 0
>> +;; clobbers: r26
>> +DEFUN __loop_ffsqi2
>
> Why does this function have "loop"
On 06/15/2011 02:47 AM, Georg-Johann Lay wrote:
> +#if defined (L_loop_ffsqi2)
> +;; Helper for ffshi2, ffssi2
> +;; r25:r24 = r26 + zero_extend16 (ffs8(r24))
> +;; r24 must be != 0
> +;; clobbers: r26
> +DEFUN __loop_ffsqi2
Why does this function have "loop" in its name? The actual
implementatio
Denis Chertykov schrieb:
> 2011/6/15 Georg-Johann Lay :
>> This is a patch that implements some libgcc functions in assembler.
>> The functions are used only very seldom but if, they lead to an
>> unpleasant waste of resource. For example, some SF functions
>> eventually lead to __clz_tab being dra
Georg-Johann Lay writes:
> gcc/
> PR target/49313
> PR target/29524
>
> * longlong.h: Add AVR support:
> (count_leading_zeros): New macro.
> (count_trailing_zeros): New macro.
> (COUNT_LEADING_ZEROS_0): New macro.
>
> * config/avr/t-avr (LIB
This is a patch that implements some libgcc functions in assembler.
The functions are used only very seldom but if, they lead to an
unpleasant waste of resource. For example, some SF functions
eventually lead to __clz_tab being dragged in (PR29524).
This patch avoids that by straight forward assem
[Resent as original appears to got lost in the net]
http://gcc.gnu.org/ml/gcc-patches/2011-06/msg01141.html
This is a patch that implements some libgcc functions in assembler.
The functions are used only very seldom but if, they lead to an
unpleasant waste of resource. For example, some SF functi
nal mail could not yet be delivered to
gcc-patches; I got a message reading something like (backtranslated to
en):
Subject: [Patch, AVR]: PR49313, fix PR29524
Sender: a...@gjlay.de
Attention: Mail could not be delivered since 1 hour.
Following receiver is affected:
gcc-patches@gcc.gn
2011/6/15 Georg-Johann Lay :
> This is a patch that implements some libgcc functions in assembler.
> The functions are used only very seldom but if, they lead to an
> unpleasant waste of resource. For example, some SF functions
> eventually lead to __clz_tab being dragged in (PR29524).
>
> This pat
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