support/regression/tests/gcc-torture-execute-20020423-1.c


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/*
   20020423-1.c from the execute part of the gcc torture suite.
 */

#include <testfwk.h>

#ifdef __SDCC
#pragma std_c99
#endif

/* PR c/5430 */
/* Verify that the multiplicative folding code is not fooled
   by the mix between signed variables and unsigned constants. */

void testTortureExecute (void)
{
  int my_int = 924;
  unsigned int result;

  result = ((my_int*2 + 4) - 8U) / 2;
  if (result != 922U)
    ASSERT (0);
         
  result = ((my_int*2 - 4U) + 2) / 2;
  if (result != 923U)
    ASSERT (0);

  result = (((my_int + 2) * 2) - 8U - 4) / 2;
  if (result != 920U)
    ASSERT (0);
  result = (((my_int + 2) * 2) - (8U + 4)) / 2;
  if (result != 920U)
    ASSERT (0);

  result = ((my_int*4 + 2U) - 4U) / 2;
  if (result != 1847U)
    ASSERT (0);

  return;
}