Re: c++/8039: aligned attribute not working in function

Re: c++/8039: aligned attribute not working in function

[hubicka]

Synopsis: aligned attribute not working in function

State-Changed-From-To: feedback->closed
State-Changed-By: hubicka
State-Changed-When: Tue Apr  8 13:05:27 2003
State-Changed-Why:
    This is known problem - with incorrect runtime the stack gets frame missaligned for function main.  Bernd has sent code for this but never merged it

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8039

Re: c++/8039: aligned attribute not working in function

[bangerth]

Synopsis: aligned attribute not working in function

State-Changed-From-To: open->feedback
State-Changed-By: bangerth
State-Changed-When: Tue Jan  7 15:53:27 2003
State-Changed-Why:
    You don't say exactly what you think does not work. However,
    if it is that xmmintrin.h does not work with c++ presently,
    then this is a known problem (see PR 8598) which is being
    worked on. Can you say whether this is what you think is
    wrong?
    
    Thanks
      Wolfgang
    
    
    For the record: if unpacked, the file given has this testcase:
    ------------------------
    #include <stdio.h>
    #include <xmmintrin.h>
    
    typedef long	v4sf __attribute__ ((mode(V4SF)));
    
    v4sf		a __attribute__ ((aligned(16))); //16 bytes aligned
    
    int	main()
    {
      v4sf		b __attribute__ ((aligned(16))); //16 bytes aligned
    
      printf("&a=0x%08X; &b=0x%08X\n", &a, &b);
      if (((long) &a) & 0x0F) puts("Err: address of var. 'a' not aligned");
      if (((long) &b) & 0x0F) puts("Err: address of var. 'b' not aligned");
      return(0);
    }
    ------------------------------
    which has compile errors in xmmintrin.h with a present
    CVS snapshot from mainline.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8039