"rws_access_reg should be handling this correctly. It uses
HARD_REGNO_NREGS to get the number of regs referred to by a reg rtl.
So it should return 64 in this case, and then it will iterate over all
64-bit PR regs when checking for a dependency."
I have found HARD_REGNO_NREGS in ia64.h
#define HA
On Mon, 2007-10-08 at 11:42 -0500, Stephen M. Kenton wrote:
> >> Is it ever possible to build libmudflap, libssp, or libgomp when
> >> inhibit_libc is set?
> >>
> >
> > It seems unlikely.
> >
> OK, then I'll pursue this idea
Please do -- that would be really great. It would be useful if
Snapshot gcc-4.1-20071008 is now available on
ftp://gcc.gnu.org/pub/gcc/snapshots/4.1-20071008/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.
This snapshot has been generated from the GCC 4.1 SVN branch
with the following options: svn://gcc.gnu.org/svn/gcc/branches
Michael_fogel wrote:
In my opinion the compiler ran out of registers and was not able to
allocate the pseudo register. In this case the compiler has to spill
these registers. How is this done in GCC? Is there a way to control it?
There are a lot of things that affect this. The main things ar
On Sat, 2007-10-06 at 19:48 -0700, Gary Funck wrote:
> While working on UPC, we ran into an interesting problem
> where if -O1 is enabled, and -funit-at-a-time is disabled
> (which is not the default configuration) a static variable
> declaration was not emitted by the assembler. I haven't
> quite
Jim Wilson wrote:
Michael_fogel wrote:
The failing instruction is a call. The compiler loads every symbol
reference into a register and calls the function using this. In front
of the error this load is missing. In smaller files the compiler uses
the reference, which is the way i want him to do
Ô¬Á¢Íþ wrote:
So, my question becomes clear:
How to solve this problem by making GCC knows the data dependencies
between mov X = pr (or mov pr = X, -1) and other usage of a specific
predicate register (e.g. p6, p7)?
We already have support for these move instructions. See the
movdi_internal p
Michael_fogel wrote:
The failing instruction is a call. The compiler loads every symbol
reference into a register and calls the function using this. In front of
the error this load is missing. In smaller files the compiler uses the
reference, which is the way i want him to do it.
We need more
Denys Vlasenko writes:
> On Monday 08 October 2007 13:50, Heikki Linnakangas wrote:
> > While profiling a test case of exporting data from PostgreSQL, I noticed
> > that a lot of CPU time was spent in sprintf, formatting timestamps like
> > "2007-10-01 12:34". I could speed that up by an order
On Monday 08 October 2007 16:08, Heikki Linnakangas wrote:
> Denys Vlasenko wrote:
> > On Monday 08 October 2007 13:50, Heikki Linnakangas wrote:
> >> While profiling a test case of exporting data from PostgreSQL, I noticed
> >> that a lot of CPU time was spent in sprintf, formatting timestamps lik
Ian Lance Taylor wrote:
Steve Kenton <[EMAIL PROTECTED]> writes:
Is it ever possible to build libmudflap, libssp, or libgomp when
inhibit_libc is set?
It seems unlikely.
OK, then I'll pursue this idea
If not, is is reasonable to add a check to the top level configure to detect
It's too far-fetched for my tastes. I think gcc should not do it.
How gcc can know what printf() and puts() mean in *my* libc?
Well, that's what -fno-builtin is for.
More precisely, -ffreestanding.
I think such optimizations should be done in glibc.
The point is that you can't. GCC knows i
Denys Vlasenko wrote:
> On Monday 08 October 2007 13:50, Heikki Linnakangas wrote:
>> While profiling a test case of exporting data from PostgreSQL, I noticed
>> that a lot of CPU time was spent in sprintf, formatting timestamps like
>> "2007-10-01 12:34". I could speed that up by an order of magni
Steve Kenton <[EMAIL PROTECTED]> writes:
> Is it ever possible to build libmudflap, libssp, or libgomp when
> inhibit_libc is set?
It seems unlikely.
> If not, is is reasonable to add a check to the top level configure to detect
> situations that will cause gcc configure to set inhibit_libc and
"Heikki Linnakangas" <[EMAIL PROTECTED]> writes:
> I don't have much experience with GCC hacking, but I did put together a
> prototype to do some of the above, and it does look like you can get
> very significant speedups. Before I continue with that, has something
> like this been proposed before
On Monday 08 October 2007 13:50, Heikki Linnakangas wrote:
> While profiling a test case of exporting data from PostgreSQL, I noticed
> that a lot of CPU time was spent in sprintf, formatting timestamps like
> "2007-10-01 12:34". I could speed that up by an order of magnitude by
> replacing the spr
Hi,
While profiling a test case of exporting data from PostgreSQL, I noticed
that a lot of CPU time was spent in sprintf, formatting timestamps like
"2007-10-01 12:34". I could speed that up by an order of magnitude by
replacing the sprintf call with tailored code, but it occurred to me
that we co
On Mon, 8 Oct 2007, Gerald Pfeifer wrote:
> As others noted, MetaHTML can be made to work on a current GNU/Linux
> system, and while this probably will not be our long term strategy, I
> am trying to brush up my scripts/patches that will allow for this more
> easily and then share this with you an
Hi, There!
For testing reasons I started to build gcc-4.1.1 on an embedded ppc system
which has a working
gcc-4.2.1 on it already:
$ gcc -v
Using built-in specs.
Target: powerpc-unknown-linux-gnu
Configured with: ../gcc-4.2.1/configure --prefix=/usr --libexecdir=/usr/lib
--enable-languages=c,c
Hi,
I'm working on IA64 with GCC-4.1.1; what I do is to instrument some
sensitive instructions (e.g. memory access) to do information flow
tracking. As I insert the instrumentation after register allocation,
I need to allocate general registers and predicates myself; for
corner cases in allocatio
Hi,
I'm working on IA64 with GCC-4.1.1; what I do is to instrument some
sensitive instructions (e.g. memory access) to do information flow
tracking. As I insert the instrumentation after register allocation,
I need to allocate general registers and predicates myself; for
corner cases in allocatio
Hi, everyone
I'm a guy working on IA64 with gcc version 4.1.1, and I need to do
some instrumentation to do information flow tracking.
Instrumentation is insert after register allocation and before the
second scheduling, I suppose gcc will automatic maintain data flow,
and it seems to be
except on
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