Since a few months, I'm having a lot of trouble comparing test results
using contrib/compare_tests because there are duplicated test results
when using parallel make check.
make -k -j10 check RUNTESTFLAGS=--target_board=unix/\{-m32,-m64\}
will sometimes run:
Executing on host:
/home/manuel/te
On Tue, Jun 23, 2015 at 11:05:45PM -0600, Jeff Law wrote:
> I certainly agree that the cost of a move, logicals and arithmetic is
> essentially the same at the chip level for many processors. But a copy has
> other properties that make it "cheaper" -- namely we can often propagate it
> away or arr
Hi,
Glibc 2.22 will have libm.so implemented as linker script helping to
link as needed against vector math library libmvec.so without addition
of -lmvec (for not static builds). Another words -lm is enough to link
against libmvec.so.
But g++ driver inserts -lm for linker command, gcc griver not.
On 06/24/2015 03:12 PM, Andrew Senkevich wrote:
> Can anybody tell something about this difference in drivers?
It's a UNIX tradition to require -lm for the floating-point
library in C programs. It doesn't make much sense now, but it's
hard to change it.
Andrew.
On 06/24/2015 03:18 AM, Alan Modra wrote:
On Tue, Jun 23, 2015 at 11:05:45PM -0600, Jeff Law wrote:
I certainly agree that the cost of a move, logicals and arithmetic is
essentially the same at the chip level for many processors. But a copy has
other properties that make it "cheaper" -- namely
On Wed, 24 Jun 2015, Andrew Senkevich wrote:
> Can anybody tell something about this difference in drivers?
libstdc++ uses libm - that's probably why g++ links it in by default.
Modern good practice would say that it should only be linked directly into
a program (should only end up listed in DT
-Original Message-
From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On Behalf Of Jeff Law
Sent: Wednesday, June 24, 2015 10:36 AM
To: gcc@gcc.gnu.org
Subject: Re: set_src_cost lying comment
On 06/21/2015 11:57 PM, Alan Modra wrote:
> set_src_cost says it is supposed to
> /* Ret
> These are good examples of things the costing model
> simply wasn't ever designed to consider -- because they weren't
> significant issues on the m68k, vax and other ports in the gcc-1 era.
>
> So I don't really know how to tell you to proceed -- I've considered the
> costing models fundamen
-Original Message-
From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On Behalf Of Richard
Kenner
Sent: Wednesday, June 24, 2015 9:28 PM
To: l...@redhat.com
Cc: gcc@gcc.gnu.org
Subject: Re: set_src_cost lying comment
> These are good examples of things the costing model simply w
On 06/24/2015 03:18 AM, Alan Modra wrote:
So in these examples we'd really like register moves to cost one
insn. Hmm, at least, moves from hard regs ought to cost something.
The more I think about it, the more I think that's a reasonable step.
Nothing should have cost 0.
Jeff
Snapshot gcc-4.9-20150624 is now available on
ftp://gcc.gnu.org/pub/gcc/snapshots/4.9-20150624/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
This snapshot has been generated from the GCC 4.9 SVN branch
with the following options: svn://gcc.gnu.org/svn/gcc/branches
On 24.06.2015 13:41, Manuel López-Ibáñez wrote:
> Is nobody seeing this? Is it a known problem with parallel make check?
> If so, can we work-around it in compare_tests?
>
> Cheers,
>
> Manuel.
>
Actually I don't get such problem, but I run the testsuite in a slightly
different way, so you might
12 matches
Mail list logo
