[Bug optimization/11263] New: [SPARC] wrong code with -O2 -fnew-ra : undefined content of output register o3 was used

[heinrich dot brand at fujitsu-siemens dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11263

           Summary: [SPARC] wrong code with -O2 -fnew-ra : undefined content
                    of output register o3 was used
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: heinrich.brand@fujitsu-siemens.com
                CC: gcc-bugs@gcc.gnu.org
 GCC build triplet: SunOS 5.8 sparc
  GCC host triplet: Fujitsu GP700F-600
GCC target triplet: Fujitsu GP700F-600

A store double instruction to write an argument on the stack uses a source


register with undefined content.




int f4(int x1, double x2, double x3,double x4 , double x5){


  return x1 + x2 + x3 + x4 + x5;}


int f5( int x1, double x2, double x3, double x4, double x5){


  printf("x5: %lf\n",x5);


  return x1 + x2 + x3 + x4 + x5;}


int sum(){ 


  int s;


  s = f4(1, 1., 1., 1., 1.) + f5(1, 1., 1., 1., 1.) ;


  printf("sum: %d\n",s);


  return s;}  


main(){ return sum()!=10; }




wrong output with -O2 -fnew-ra is:


x5: 0.000000


sum: 9


1




right output is:


x5: 1.000000


sum: 10


0