Quoting Ian Lance Taylor :
Hmmm, you could be right. I wrote and tested some examples when
working on lower-subreg, but I never committed them. The current
define_splits in i386.md which can do parallel sets only run if
reload_completed is true, when simplify_gen_subreg will return
different h
On 06/14/10 11:58, Ian Lance Taylor wrote:
"Amker.Cheng" writes:
Wondering whether possible to handle multi-word mode with more accuracy,
in either subreg or IRA pass?
Yes, it is possible. What you need to do is to write a split which
turns the mult:DI insn into an insn which sets
Thanks for explanation.
here are three more questions
1 , If I am talking the right thing, there are two insns like
"*mulsi3_1" and "*smulsi3_highpart_insn",
which set two parts of DImode pseudo regs of DImode mult.
Since both parts pf result are used in the original example,
Quoting Diego Novillo :
- Fields properties_required, properties_provided and
properties_destroyed should Mean Something other than asserting
whether they exist.
- Whatever doesn't exist before a pass, needs to be computed.
- Pass scheduling can be done by simply declaring a pass and
presenting
I have been thinking about doing some cleanups to the pass manager.
The goal would be to have the pass manager be the central driver of
every action done by the compiler. In particular, the front ends
should make use of it and the callgraph manager, instead of the
twisted interactions we have now.
Ian Lance Taylor wrote:
>>> Well, as you know, subregs have two meanings which look similar but
>>> are in fact entirely different. It's valid to set subregs of the same
>>> pseudo in parallel if the subregs represent different hard registers.
>> Are you aware of any examples of this in the comp
Bernd Schmidt writes:
> On 06/15/2010 12:06 AM, Ian Lance Taylor wrote:
>
>> Well, as you know, subregs have two meanings which look similar but
>> are in fact entirely different. It's valid to set subregs of the same
>> pseudo in parallel if the subregs represent different hard registers.
>> It
On 06/15/2010 12:06 AM, Ian Lance Taylor wrote:
> Well, as you know, subregs have two meanings which look similar but
> are in fact entirely different. It's valid to set subregs of the same
> pseudo in parallel if the subregs represent different hard registers.
> It's not valid if the subregs rep
Bernd Schmidt writes:
> On 06/14/2010 07:58 PM, Ian Lance Taylor wrote:
>> "Amker.Cheng" writes:
>>
>>> Wondering whether possible to handle multi-word mode with more accuracy,
>>> in either subreg or IRA pass?
>>
>> Yes, it is possible. What you need to do is to write a split which
>> turns
On Mon, Jun 14, 2010 at 11:05 AM, Manuel López-Ibáñez
wrote:
> On 10 June 2010 22:05, Quentin Neill wrote:
>> I have a python script which crawls, caches, and parses the gcc-cvs
>> (and binutils-cvs) email archive pages. I wrote it to help another
>> script that correlates patch revisions in a b
On 06/14/2010 07:58 PM, Ian Lance Taylor wrote:
> "Amker.Cheng" writes:
>
>> Wondering whether possible to handle multi-word mode with more accuracy,
>> in either subreg or IRA pass?
>
> Yes, it is possible. What you need to do is to write a split which
> turns the mult:DI insn into an insn whi
On Mon, 14 Jun 2010, Paulo J. Matos wrote:
> Hello,
>
> In gcc4.3.4, for my architecture: 16 BITS_PER_UNIT, 1 UNIT_PER_WORD,
> with INT_TYPE_SIZE = 16 and FLOAT_TYPE_SIZE = 32, then an unsigned int
> is QImode and a float is HFmode.
To attempt such a port, being an expert in GCC internals is a g
"Paulo J. Matos" writes:
> In gcc4.3.4, for my architecture: 16 BITS_PER_UNIT, 1 UNIT_PER_WORD,
> with INT_TYPE_SIZE = 16 and FLOAT_TYPE_SIZE = 32, then an unsigned int
> is QImode and a float is HFmode.
>
> However with:
> float uitof(unsigned int x) { return x; }
>
> I get a call to the functio
"Amker.Cheng" writes:
> Wondering whether possible to handle multi-word mode with more accuracy,
> in either subreg or IRA pass?
Yes, it is possible. What you need to do is to write a split which
turns the mult:DI insn into an insn which sets two separate subregs.
The values for the two subregs
Richard Guenther writes:
> Commons between shared libraries and a program can't work.
Technically speaking, shared libraries never have common symbols.
They can have defined symbols which are labelled as, in essence,
"formerly common," and those can be made to work correctly under
certain restr
Hello,
In gcc4.3.4, for my architecture: 16 BITS_PER_UNIT, 1 UNIT_PER_WORD,
with INT_TYPE_SIZE = 16 and FLOAT_TYPE_SIZE = 32, then an unsigned int
is QImode and a float is HFmode.
However with:
float uitof(unsigned int x) { return x; }
I get a call to the function __floatunsihf. Shouldn't this b
"Bingfeng Mei" writes:
> Actually, gold plugin is used in the original example. However, resolution
> produced by plugin is bypassed due to a bug-fix by Richard. Do you have any
> comment on that:
> http://gcc.gnu.org/ml/gcc-patches/2010-06/msg01116.html
Sorry, I missed that. There is a bug in
On Mon, Jun 14, 2010 at 4:50 AM, wrote:
> Hello GCC,
>
> I would like to inquire about an open source project of yours called GCC.
>
> I read that it's a cross platform complier for a number of programs.
>
> My question is does it work with open source game engines in complying
> games for game c
On Mon, Jun 14, 2010 at 12:05 PM, Manuel López-Ibáñez
wrote:
> What we would need is some way to detect that patches have been
> committed. Otherwise that list will grow uncontrollably very fast.
Imagine that :)
On 10 June 2010 22:05, Quentin Neill wrote:
> On Tue, Jun 8, 2010 at 6:30 AM, Jonathan Wakely wrote:
>> On 7 June 2010 22:43, Ian Lance Taylor wrote:
>>>
>>> The patch tracker (http://gcc.gnu.org/wiki/GCC_Patch_Tracking) is not
>>> currently operating.
>>>
>>> Would anybody like to volunteer to g
Quoting Bingfeng Mei :
Hi,
I just updated from last week's version to 160732. It seems broken
due to the latest changes in c-family directory.
--enable-build-with-cxx --disable-werror --disable-bootstrap
That's PR 44512.
On Mon, Jun 14, 2010 at 03:14:37PM +0200, Michael Matz wrote:
> Doing the change in GNU as has the advantage that all insn lengths are
> available without any work, i.e. it will handle e.g. inline asm; and that
> relaxation also is implemented just fine (it exists already in order to
> decide wh
Hi,
On Sun, 13 Jun 2010, H.J. Lu wrote:
> > We shouldn't turn GNU x86 assembler into an optimizing assembler. Next
> > people may ask assembler to remove redundant instructions, ...
Well, but currently nobody is asking for such thing, right?
> > Right now, when something goes wrong, people don
Hi,
I just updated from last week's version to 160732. It seems broken due to the
latest changes in c-family directory.
./../trunk/gcc/c-family/c-cppbuiltin.c: In function 'void
builtin_define_with_hex_fp_value(const char*, tree_node*, int, const char*,
const char*, const char*)':
../../trunk/gc
Hello GCC,
I would like to inquire about an open source project of yours called GCC.
I read that it's a cross platform complier for a number of programs.
My question is does it work with open source game engines in complying
games for game console platforms (such as Xbox 360, Playstation3, Wii,
Hello GCC,
I would like to inquire about an open source project of yours called GCC.
I read that it's a cross platform complier for a number of programs.
My question is does it work with open source game engines in complying
games for game console platforms (such as Xbox 360, Playstation3, Wii,
Done. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44535
Thanks.
Dmitry
2010/6/14 Ian Lance Taylor :
> Дмитрий Дьяченко writes:
>
>> Trunk g++/x86/160655 with -O0 compile test w/o errors, but with
>> -O[123] generates undefined symbol
>
>> Need i file a PR?
>
> It certainly looks like a bug. Ple
On Mon, Jun 14, 2010 at 11:27 AM, David Brown wrote:
> On 14/06/2010 11:22, Dave Korn wrote:
>>
>> On 14/06/2010 05:43, Ian Lance Taylor wrote:
>>>
>>> David Brown writes:
>>>
After doing a bit more reading and thinking, it seems to me that
-fwhole-program will be used in most cases whe
On Mon, Jun 14, 2010 at 9:26 AM, David Brown wrote:
> On 14/06/2010 06:43, Ian Lance Taylor wrote:
>>
>> David Brown writes:
>>
>>> After doing a bit more reading and thinking, it seems to me that
>>> -fwhole-program will be used in most cases where LTO is used. You use
>>> -flto when compiling
Hi :
I am studying IRA right now (GCC4.4.1,mips32 target),
for following piece of code:
long long func(int a, int b)
{
long long r = (long long)a * (long long)b;
return r;
}
the asm generated on mips is like:
mult$5,$4
mfhi$5
mflo$2
j
On Mon, Jun 14, 2010 at 12:25 AM, Basile Starynkevitch
wrote:
>
> Why do you want to optimize the generated assembly code? AFAIK, all
> optimization passes in GCC work on some intermediate representation
> which is not the assembly code, and many of them work on Gimple.
> ...
> ... GCC emit textua
On 14/06/2010 11:22, Dave Korn wrote:
On 14/06/2010 05:43, Ian Lance Taylor wrote:
David Brown writes:
After doing a bit more reading and thinking, it seems to me that
-fwhole-program will be used in most cases where LTO is used. You use
-flto when compiling each source file, then link them
> -Original Message-
> From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On Behalf Of
> Ian Lance Taylor
> Sent: 14 June 2010 05:43
> To: David Brown
> Cc: gcc@gcc.gnu.org
> Subject: Re: Issue with LTO/-fwhole-program
>
> David Brown writes:
>
> > After doing a bit more readin
On 13/06/2010 20:57, Ian Lance Taylor wrote:
> Take a look at http://code.google.com/p/mao/ .
> Ian
Thanks, Ian! This project looks very interesting.
I will try to play with it.
On Mon, Jun 14, 2010 at 2:28 AM, Dave Korn wrote:
> Or in binutils, LD's relaxation infrastructure might be usable
On 14/06/2010 05:43, Ian Lance Taylor wrote:
> David Brown writes:
>
>> After doing a bit more reading and thinking, it seems to me that
>> -fwhole-program will be used in most cases where LTO is used. You use
>> -flto when compiling each source file, then link them with gcc with
>> -flto and -f
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meg.
Regisztráció itt:
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On 14/06/2010 06:43, Ian Lance Taylor wrote:
David Brown writes:
After doing a bit more reading and thinking, it seems to me that
-fwhole-program will be used in most cases where LTO is used. You use
-flto when compiling each source file, then link them with gcc with
-flto and -fwhole-program
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