On 08/29/2017 05:36 PM, Michael Clark wrote:
> We’re investigating an issue with redundant sign-extension instructions being
> emitted with the riscv backend. Firstly I would like to state that riscv is
> possibly a unique backend with respect to its canonical sign-extended
> register form due t
On 09/06/2017 10:43 AM, Richard Henderson wrote:
> On 08/29/2017 05:36 PM, Michael Clark wrote:
>> We’re investigating an issue with redundant sign-extension instructions
>> being emitted with the riscv backend. Firstly I would like to state that
>> riscv is possibly a unique backend with respect
On 08/30/2017 02:43 AM, Michael Clark wrote:
> POINTERS_EXTEND_UNSIGNED -1 (which is true) is defined on some targets. I
> assume they sign-extend but the meaning has been overloaded.
Just for your edification, this is for e.g. ia64's "addp4" instruction and it
is not a normal extension. A 2-bit
On 09/06/2017 09:53 AM, Jeff Law wrote:
>> I think the easiest solution to this is for combine to notice when IOR has
>> operands with non-zero-bits that do not overlap, convert the operation to
>> ADD.
>> That allows the final two insns to fold to "addw" and the compiler need do no
>> further ana
On 09/06/2017 10:17 AM, Richard Henderson wrote:
>> Yea. I'd also expect zero/nonzero bits tracking in combine to catch
>> this. Shouldn't the sign bit be known to be zero after the shift which
>> makes the extension redundant regardless of the SUBREG_PROMOTED flag?
> You're right, this should be
On 09/06/2017 11:17 AM, Richard Henderson wrote:
> On 09/06/2017 09:53 AM, Jeff Law wrote:
>>> I think the easiest solution to this is for combine to notice when IOR has
>>> operands with non-zero-bits that do not overlap, convert the operation to
>>> ADD.
>>> That allows the final two insns to fo
On 25 August 2017 at 14:55, David Edelsohn wrote:
> On Fri, Aug 25, 2017 at 9:50 AM, Rainer Orth
> wrote:
>> Hi H.J.,
>>
>>> On Fri, Aug 25, 2017 at 6:32 AM, David Edelsohn wrote:
On Fri, Aug 25, 2017 at 9:24 AM, H.J. Lu wrote:
> On Fri, Aug 25, 2017 at 6:01 AM, David Edelsohn wrote:
>
On Wed, Sep 6, 2017 at 8:48 PM, Jonathan Wakely wrote:
> On 25 August 2017 at 14:55, David Edelsohn wrote:
>> On Fri, Aug 25, 2017 at 9:50 AM, Rainer Orth
>> wrote:
>>> Hi H.J.,
>>>
On Fri, Aug 25, 2017 at 6:32 AM, David Edelsohn wrote:
> On Fri, Aug 25, 2017 at 9:24 AM, H.J. Lu wrote:
Snapshot gcc-6-20170906 is now available on
ftp://gcc.gnu.org/pub/gcc/snapshots/6-20170906/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
This snapshot has been generated from the GCC 6 SVN branch
with the following options: svn://gcc.gnu.org/svn/gcc/branches/gcc-6
> On Sep 4, 2017, at 8:13 PM, Leslie Zhai via llvm-dev
> wrote:
>
> Hi LLVM and GCC developers,
>
> LLVM China http://www.llvm.org.cn forked DragonEgg
> https://github.com/LLVM-China/dragonegg because:
>
> * Some subprojects are impractical or uninteresting to relicense (e.g.
> llvm-gcc
Hi Everyone,
I'm on gcc rather than gcc-help because we need to talk with some GCC
devs who can help take this further.
I have implementation for AES on Power 8 using GCC's built-ins. Its
available for inspection and download at
https://github.com/noloader/AES-Power8. The problem is, it does not
Dear Chris,
Thanks for your kind response!
The motivating of this work:
1. Clang can not build Linux https://bugs.llvm.org/show_bug.cgi?id=22830
and LLVMLinux patch was not be maintained?
http://llvm.linuxfoundation.org/index.php/Main_Page
2. Clang analyzer Frontend can not static analysis
On Wed, Sep 6, 2017 at 11:37 PM, Jeffrey Walton wrote:
> Hi Everyone,
>
> I'm on gcc rather than gcc-help because we need to talk with some GCC
> devs who can help take this further.
>
> I have implementation for AES on Power 8 using GCC's built-ins. Its
> available for inspection and download at
On Thu, Sep 7, 2017 at 1:39 AM, R0b0t1 wrote:
> On Wed, Sep 6, 2017 at 11:37 PM, Jeffrey Walton wrote:
>> Hi Everyone,
>>
>> I'm on gcc rather than gcc-help because we need to talk with some GCC
>> devs who can help take this further.
>>
>> I have implementation for AES on Power 8 using GCC's bui
14 matches
Mail list logo
