https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #17 from Jack Lloyd ---
Thank you!
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
Jakub Jelinek changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #15 from Jakub Jelinek ---
Author: jakub
Date: Sat Oct 14 18:48:38 2017
New Revision: 253761
URL: https://gcc.gnu.org/viewcvs?rev=253761=gcc=rev
Log:
PR middle-end/62263
PR middle-end/82498
*
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #14 from Jakub Jelinek ---
Author: jakub
Date: Sat Oct 14 18:47:14 2017
New Revision: 253760
URL: https://gcc.gnu.org/viewcvs?rev=253760=gcc=rev
Log:
PR middle-end/62263
PR middle-end/82498
*
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #13 from Jakub Jelinek ---
Author: jakub
Date: Fri Oct 13 07:28:46 2017
New Revision: 253709
URL: https://gcc.gnu.org/viewcvs?rev=253709=gcc=rev
Log:
PR target/82498
* fold-const.c (fold_binary_loc) : Code cleanups,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #12 from Jakub Jelinek ---
Author: jakub
Date: Fri Oct 13 07:17:06 2017
New Revision: 253708
URL: https://gcc.gnu.org/viewcvs?rev=253708=gcc=rev
Log:
PR target/82498
* config/i386/ia32intrin.h (__rold, __rord,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #11 from Jakub Jelinek ---
Author: jakub
Date: Thu Oct 12 19:10:34 2017
New Revision: 253695
URL: https://gcc.gnu.org/viewcvs?rev=253695=gcc=rev
Log:
PR target/82498
* config/i386/i386.md (*ashl3_mask_1,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #10 from Marc Glisse ---
f1...f6 already have a LROTATE_EXPR in the .original dump. The others don't get
one until forwprop1, which is after einline, so there is a small chance of
inlining causing other optimizations that mess with
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #9 from Jakub Jelinek ---
Created attachment 42343
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42343=edit
gcc8-pr82498-intrin.patch
Untested patch to fix the intrinsics.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #8 from Jakub Jelinek ---
(In reply to Uroš Bizjak from comment #6)
> (In reply to Jack Lloyd from comment #5)
> > Jakub thank you very much for your comments, this was helpful for me in
> > getting consistent rol/ror generation.
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #7 from Marc Glisse ---
(In reply to Uroš Bizjak from comment #6)
> You can use __rol{b,w,d,q} and __ror{b,w,d,q} (and their aliases) from
> ia32intrin.h. These are standardized; you have to include x86intrin.h header.
Some of those
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #6 from Uroš Bizjak ---
(In reply to Jack Lloyd from comment #5)
> Jakub thank you very much for your comments, this was helpful for me in
> getting consistent rol/ror generation.
>
> Speaking as a user it's frustrating that Clang
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #5 from Jack Lloyd ---
Jakub thank you very much for your comments, this was helpful for me in getting
consistent rol/ror generation.
Speaking as a user it's frustrating that Clang and GCC don't just have a
builtin for rotations
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #4 from Jakub Jelinek ---
Two further cases:
unsigned
f10 (unsigned x, unsigned char y)
{
y %= __CHAR_BIT__ * __SIZEOF_INT__;
return (x << y) | (x >> (-y & ((__CHAR_BIT__ * __SIZEOF_INT__) - 1)));
}
unsigned
f11 (unsigned x,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
--- Comment #3 from Jakub Jelinek ---
Not to mention that the #c0 code has undefined behavior if rot is not 0, but a
multiple of 8 * sizeof(uint32_t), like 32, 64, ...
If you insisted on the rot == 0 check it would need to be done after the the
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment #2
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82498
Marc Glisse changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
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