[Bug other/12299] New: altivec vec_cmple generates wrong instruction

[Bug other/12299] New: altivec vec_cmple generates wrong instruction

[darren at nasoftware dot co dot uk]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12299

           Summary: altivec vec_cmple generates wrong instruction
           Product: gcc
           Version: 3.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: other
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: darren at nasoftware dot co dot uk
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-unknown-linux-gnu
  GCC host triplet: powerpc-unknown-linux-gnu
GCC target triplet: powerpc-unknown-linux-gnu

The altivec instruction vec_cmple currently does the same as the vec_cmpge
instruction.  The error seems to be in the altivec.h include file, the vec_cmple
arguments should probably be swapped around.

How to repeat:

#include <altivec.h>
#include <stdio.h>
#include <stdlib.h>

void PrintVectorFloat(FILE *out, const vector float *vec)
{
  const float *ptr = (float *)vec;
  int i, end = vec_step(vector float);
  fprintf(out, "( ");
  for(i=0; i<end-1; i++) {
    fprintf(out, "%f", *ptr++);
    fprintf(out, ", ");
  }
  fprintf(out, "%f", *ptr++);
  fprintf(out, " )");
  return;
}

int main(void)
{
  vector float zero    = (vector float) {0.0, 0.0, 0.0, 0.0};
  vector float smaller = (vector float) {1.0, 2.0, 3.0, 4.0};
  vector float bigger  = (vector float) {5.0, 6.0, 7.0, 4.0};
  vector bool int cmp;
  
  cmp = vec_cmple (bigger, smaller);
  bigger = vec_sel (bigger, zero, cmp);
  PrintVectorFloat (stdout, &bigger); printf ("\n");
  
  cmp = vec_cmpge (bigger, smaller);
  bigger = vec_sel (bigger, zero, cmp);
  PrintVectorFloat (stdout, &bigger); printf ("\n");
  return 0;
}

compiled with gcc -maltivec -mabi=altivec

gcc -v:
Reading specs from
/usr/local/gcc-3.3.1/lib/gcc-lib/powerpc-unknown-linux-gnu/3.3.1/specs
Configured with: ../gcc-3.3.1/configure --prefix=/usr/local/gcc-3.3.1
--enable-altivec --enable-languages=c++,f77,c
Thread model: posix
gcc version 3.3.1

[Bug target/12299] altivec vec_cmple generates wrong instruction

[bangerth at dealii dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12299


bangerth at dealii dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|other                       |target

[Bug target/12299] altivec vec_cmple generates wrong instruction

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12299


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-09-16 16:23:14
               date|                            |


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-09-16 16:23 -------
The problem is that the arguements in altivec.h is reveresed; just like in bug 8551.

[Bug target/12299] altivec vec_cmple generates wrong instruction

[aldyh at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12299


aldyh at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |aldyh at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED

[Bug target/12299] altivec vec_cmple generates wrong instruction

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-01-01 21:21 -------
Fixed for 3.4.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
           Keywords|                            |wrong-code
         Resolution|                            |FIXED
   Target Milestone|---                         |3.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12299