On May 3, 2012, at 12:24 , Richard Guenther wrote:
>> One area of potential difference came to mind yesterday: regarding the
>> processing of type alignment differences. VCE to more aligned (of the
>> same size) would make a temp copy to yield a correctly aligned object.
>>
>> Would MEM_REF d
On Thu, May 3, 2012 at 10:21 AM, Olivier Hainque wrote:
>
> On Apr 30, 2012, at 16:18 , Olivier Hainque wrote:
>>> Can you formally relate those three representations and tell me why
>>> VIEW_CONVERT_EXPR is useful (not only convenient because of less operands)
>>> to use on lvalues (thus memory,
On Apr 30, 2012, at 16:18 , Olivier Hainque wrote:
>> Can you formally relate those three representations and tell me why
>> VIEW_CONVERT_EXPR is useful (not only convenient because of less operands)
>> to use on lvalues (thus memory, compared to registers or constants)?
>
> I have ideas on how t
Hello Richard,
Thanks for the constructive exchange :-)
On Apr 26, 2012, at 10:48 , Richard Guenther wrote:
>> In particular, I'm pretty sure that we can get component
>> refs of integral modes that access a smaller range of bits
>> than what the mode conveys. It is common with packing or
>>
On Wed, Apr 25, 2012 at 11:29 PM, Olivier Hainque wrote:
> Thanks for your feedback Richard,
>
> On Apr 25, 2012, at 16:16 , Richard Guenther wrote:
>> I think much better would be to simply disallow any toplevel
>> VIEW_CONVERT_EXPR of BLKmode,
>
>> Does that fix your problems, too? If so I pref
Thanks for your feedback Richard,
On Apr 25, 2012, at 16:16 , Richard Guenther wrote:
> I think much better would be to simply disallow any toplevel
> VIEW_CONVERT_EXPR of BLKmode,
> Does that fix your problems, too? If so I prefer that.
Hmm, I think that this would fix the particular testscas
On Wed, Apr 25, 2012 at 3:37 PM, Olivier Hainque wrote:
> Hello,
>
> For the "PA(1).Z := 44;" assignment in the attached Ada
> testcase, we observe the gcc 4.5 SRA pass performing an
> invalid transformation, turning:
>
> struct {
> system__pack_48__bits_48 OBJ;
> } D.1432;
>
> D.1432.OBJ =
