https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
Jiong Wang changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
--- Comment #16 from Jiong Wang ---
Author: jiwang
Date: Fri Jan 16 11:48:00 2015
New Revision: 219723
URL: https://gcc.gnu.org/viewcvs?rev=219723&root=gcc&view=rev
Log:
[AArch64] Enable CCMP support for AArch64, PR64015 resolved
gcc/
2015-01-1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
--- Comment #14 from StaffLeavers at arm dot com ---
zhenqiang.chen no longer works for ARM.
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--- Comment #15 from StaffLeavers at arm dot com ---
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--- Comment #13 from StaffLeavers at arm dot com ---
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--- Comment #12 from StaffLeavers at arm dot com ---
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--- Comment #11 from StaffLeavers at arm dot com ---
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--- Comment #10 from StaffLeavers at arm dot com ---
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--- Comment #9 from StaffLeavers at arm dot com ---
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--- Comment #8 from StaffLeavers at arm dot com ---
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--- Comment #7 from Zhenqiang Chen ---
Sorry for blocking your benchmark tests. I had reverted the ccmp patch.
I will rework the patch based on Richard Henderson's comments:
https://gcc.gnu.org/ml/gcc-patches/2014-11/msg03100.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
--- Comment #6 from ktkachov at gcc dot gnu.org ---
By the way, this ICE manifests when building perlbmk in SPEC2006
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
--- Comment #5 from Zhenqiang Chen ---
It seams you always win with ccmp. Please go ahead for your patch and make sure
the following case work.
int
test (unsigned short a, unsigned char b)
{
return a > 0xfff2 && b > 252;
}
Thanks!
-Zhenqiang
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
--- Comment #4 from Andrew Pinski ---
(In reply to Andrew Pinski from comment #3)
> See how with forcing is always the same size or smaller?
Actually is always smaller by at least one instruction. due to the need to do
one extra cset and one an
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
--- Comment #3 from Andrew Pinski ---
(In reply to Zhenqiang Chen from comment #2)
> 2) How to justify it is valueable (the overhead of ccmp is OK) when
> generating ccmp?
If we ignore the case for swapping.
Try this one:
int
test (int a, int b)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
--- Comment #2 from Zhenqiang Chen ---
You force it to register? In fact, I tend to not force it to register in
gen_ccmp_next, since it will introduce more overhead for ccmp, which
performance maybe worse.
My patch to fix the issue is at:
https:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
Andrew Pinski changed:
What|Removed |Added
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
Richard Biener changed:
What|Removed |Added
Priority|P3 |P1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64015
ktkachov at gcc dot gnu.org changed:
What|Removed |Added
Known to work||4.8.4, 4.9.2
Target Miles
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