On Mon, May 11, 2009 at 12:25:50PM -0700, Ian Lance Taylor wrote:
> I feel reasonably confident that there will never be a processor which
> supports a bitfield instruction which operates on multiple hard register
> simultaneously. I don't think that is a case we need to worry about.
>
> (I will
Paolo Bonzini writes:
> Ian Lance Taylor wrote:
>> Kenneth Zadeck writes:
>>
>>> Would those that know, (or even those that are just generally vocal) be
>>> willing to support a change rtl.texi for sign_extract (and by
>>> implication, zero_extract) from
>>>
>>> If @var{loc} is in memory, its m
Ian Lance Taylor wrote:
I guess the obvious counterexample would be a processor which supported
vector registers and supported bitfield operations on such registers. I
don't know of any such processors.
The Control Data Cyber 205 (roughly '75-'85).
You could write the inner loop of the Siev
Jim Wilson wrote:
> On Mon, 2009-05-11 at 10:52 -0400, Kenneth Zadeck wrote:
>> Would those that know, (or even those that are just generally vocal) be
>> willing to support a change rtl.texi for sign_extract (and by
>> implication, zero_extract) from ...
>> to a version that explicitly prohibits t
Ian Lance Taylor wrote:
> Kenneth Zadeck writes:
>
>> Would those that know, (or even those that are just generally vocal) be
>> willing to support a change rtl.texi for sign_extract (and by
>> implication, zero_extract) from
>>
>> If @var{loc} is in memory, its mode must be a single-byte integer
On Mon, 2009-05-11 at 10:52 -0400, Kenneth Zadeck wrote:
> Would those that know, (or even those that are just generally vocal) be
> willing to support a change rtl.texi for sign_extract (and by
> implication, zero_extract) from ...
> to a version that explicitly prohibits the use of a mode longer
Kenneth Zadeck writes:
> Would those that know, (or even those that are just generally vocal) be
> willing to support a change rtl.texi for sign_extract (and by
> implication, zero_extract) from
>
> If @var{loc} is in memory, its mode must be a single-byte integer mode.
> If @var{loc} is in a reg
Would those that know, (or even those that are just generally vocal) be
willing to support a change rtl.texi for sign_extract (and by
implication, zero_extract) from
If @var{loc} is in memory, its mode must be a single-byte integer mode.
If @var{loc} is in a register, the mode to use is specified
