RE: Problem compiling with SSE intrinsics and -O3

RE: Problem compiling with SSE intrinsics and -O3

[Morris, Philip]

FYI the error is directly related to the inclusion of the _mm_xor_ps() intrinsic, replacing this with, say _mm_sub_ps() and it compiles without a problem.

Here is the output of -v compile

$ gcc -v -msse2 -O3 -c test.c
Reading specs from /usr/lib/gcc/i686-pc-cygwin/3.4.4/specs
Configured with: /managed/gcc-build/final-v3-bootstrap/gcc-3.4.4-999/configure -
-verbose --program-suffix=-3 --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc
--libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/s
hare/info --enable-languages=c,ada,c++,d,f77,pascal,java,objc --enable-nls --wit
hout-included-gettext --enable-version-specific-runtime-libs --without-x --enabl
e-libgcj --disable-java-awt --with-system-zlib --enable-interpreter --disable-li
bgcj-debug --enable-threads=posix --enable-java-gc=boehm --disable-win32-registr
y --enable-sjlj-exceptions --enable-hash-synchronization --enable-libstdcxx-debu
g
Thread model: posix
gcc version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125)
 /usr/lib/gcc/i686-pc-cygwin/3.4.4/cc1.exe -quiet -v -D__CYGWIN32__ -D__CYGWIN__
 -Dunix -D__unix__ -D__unix -idirafter /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../.
./../include/w32api -idirafter /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i68
6-pc-cygwin/lib/../../include/w32api test.c -quiet -dumpbase test.c -msse2 -mtun
e=pentiumpro -auxbase test -O3 -version -o /tmp/ccK2doSW.s
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i6
86-pc-cygwin/include"
ignoring duplicate directory "/usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../i686
-pc-cygwin/lib/../../include/w32api"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/i686-pc-cygwin/3.4.4/include
 /usr/include
 /usr/lib/gcc/i686-pc-cygwin/3.4.4/../../../../include/w32api
End of search list.
GNU C version 3.4.4 (cygming special, gdc 0.12, using dmd 0.125) (i686-pc-cygwin
)
        compiled by GNU C version 3.4.4 (cygming special, gdc 0.12, using dmd 0.
125).
GGC heuristics: --param ggc-min-expand=99 --param ggc-min-heapsize=130992
test.c: In function `vclrx':
test.c:39: internal compiler error: in output_constant_pool, at varasm.c:3190
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://cygwin.com/problems.html> for instructions.

Seems like a really old version!

Phil


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RE: Problem compiling with SSE intrinsics and -O3

[Morris, Philip]

Of course installing the gcc4 packages made everything work !

Sorry for the noise.

Perhaps it is time to make the gcc 4.x the 'default' ?

Thanks for your advice

Phil.


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Re: Problem compiling with SSE intrinsics and -O3

[Yaakov (Cygwin/X)]

On Fri, 2011-05-13 at 12:15 -0400, Morris, Philip wrote:
> When i try to compile the attached file i get this error
> 
> $ gcc -msse2 -c -O3 test.c
> test.c: In function `vclrx':
> test.c:43: internal compiler error: in output_constant_pool, at varasm.c:3190
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://cygwin.com/problems.html> for instructions.

WFM with Ports' gcc 4.5.2 and binutils 2.21.


Yaakov



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Re: Problem compiling with SSE intrinsics and -O3

[Dima Pasechnik]

Hi Phil,
Please post the output of gcc -v.
In fact, I guess it has  little to do with Cygwin, as it looks very
much like a gcc bug,
perhaps fixed in a later version of gcc.

Showing that this is a Cygwin bug would need a check that the same
does not happen
on the same version of gcc on Linux, say.

Best,
Dmitrii

On 14 May 2011 00:15, Morris, Philip <prm@mc.com> wrote:
> (third try, wow you guys really don't want to receive emails !)
>
> Dear Sir/Madam
>
> I have come across a problem when trying to compile a simple program using Cygwin
>
> I just did a fresh install of Cygwin from the net on W7 32bit PC and included make/g++ to build my software (which builds fine on other native linux machines)
>
> When i try to compile the attached file i get this error
>
> $ gcc -msse2 -c -O3 test.c
> test.c: In function `vclrx':
> test.c:43: internal compiler error: in output_constant_pool, at varasm.c:3190
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://cygwin.com/problems.html> for instructions.
>
> Without the -O3 option all is well
>
> Help appreciated.
>
> Thanks
>
> Phil.
>

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Re: Problem compiling with SSE intrinsics and -O3

[Tim Prince]

On 5/13/2011 12:15 PM, Morris, Philip wrote:
> (third try, wow you guys really don't want to receive emails !)

> Please submit a full bug report,
> with preprocessed source if appropriate.
> See<URL:http://cygwin.com/problems.html>  for instructions.
>

> Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

They probably don't like to see e-mails which ignore the instructions 
contained in them.  How many people will be curious enough to try 
several of the compilers provided currently or in the past by cygwin 
setup.exe, not even knowing whether you're running one of those?
-- 
Tim Prince

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Problem compiling with SSE intrinsics and -O3

[Morris, Philip]

[-- Attachment #1: Type: text/plain, Size: 748 bytes --]

(third try, wow you guys really don't want to receive emails !)

Dear Sir/Madam

I have come across a problem when trying to compile a simple program using Cygwin

I just did a fresh install of Cygwin from the net on W7 32bit PC and included make/g++ to build my software (which builds fine on other native linux machines)

When i try to compile the attached file i get this error

$ gcc -msse2 -c -O3 test.c
test.c: In function `vclrx':
test.c:43: internal compiler error: in output_constant_pool, at varasm.c:3190
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://cygwin.com/problems.html> for instructions.

Without the -O3 option all is well

Help appreciated.

Thanks

Phil.



[-- Attachment #2: test.c --]
[-- Type: text/plain, Size: 697 bytes --]


#include <stdio.h>
#include <xmmintrin.h>

void vclrx(float *fc, int k, int n, int f);

void vclrx_csal(
    float *C,
    int K,
    int N,
    int XFLAG);


void vclrx(float *fc, int k, int n, int f)
{
  __m128 *pC = (__m128*)fc;
  __m128 c0,c1,c2,c3;

  if (k != 1)
  {
    printf("vmovx_csal\n");
    vclrx_csal(fc,k,n,f);
    return;
  }

  if (n > 3)
  {
    c0 = _mm_xor_ps(c0,c0);

    while (n >= 4)
    {
      *pC++ = c0;

      n -= 4;
    }
  }

  return;
}

void vclrx_csal(
    float *C,
    int K,
    int N,
    int XFLAG)
{
    ( void ) XFLAG;

    int    i;
    float  zero;

    zero = 0.0;
    C -= K;

    for ( i = 0; i < N; i++ )
    {
        *( C += K ) = zero;
    }
}

[-- Attachment #3: Type: text/plain, Size: 218 bytes --]

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