1  /* PR tree-optimization/58791 */
       2  /* { dg-do run } */
       3  /* { dg-options "-g" } */
       4  
       5  #include "../nop.h"
       6  
       7  __attribute__((noinline, noclone)) unsigned int
       8  foo (unsigned int a0, unsigned int a1, unsigned int a2,
       9       unsigned int a3, unsigned int a4)
      10  {
      11    unsigned int b0, b1, b2, b3, b4, e;
      12    /* this can be optimized to four additions... */
      13    b4 = a4 + a3 + a2 + a1 + a0;		/* { dg-final { gdb-test pr58791-5.c:20 "b4" "4681" } } */
      14    b3 = a3 + a2 + a1 + a0;		/* { dg-final { gdb-test pr58791-5.c:20 "b3" "585" } } */
      15    b2 = a2 + a1 + a0;			/* { dg-final { gdb-test pr58791-5.c:20 "b2" "73" } } */
      16    b1 = a1 + a0;				/* { dg-final { gdb-test pr58791-5.c:20 "b1" "9" } } */
      17    /* This is actually 0 */
      18    e = b4 - b3 + b2 - b1 - a4 - a2;	/* { dg-final { gdb-test pr58791-5.c:20 "e" "0" } } */
      19    asm volatile (NOP : : : "memory");
      20    asm volatile (NOP : : : "memory");
      21    return e;
      22  }
      23  
      24  int
      25  main ()
      26  {
      27    foo (1, 8, 64, 512, 4096);
      28    return 0;
      29  }