// RUN: %llvmgcc %s -emit-llvm -O0 -c -o %t1.bc
// RUN: rm -f %t1.log
// RUN: rm -rf %t.klee-out
// RUN: %klee --output-dir=%t.klee-out --log-file %t1.log --debug-check-for-implied-values %t1.bc
// RUN: grep "= 0 (ok)" %t1.log
// RUN: grep "= 2 (missed)" %t1.log

#define swap(x) (((x)>>16) | (((x)&0xFFFF)<<16))
int main() {
  unsigned x, y;
  
  klee_make_symbolic(&x, sizeof x, "x");
  klee_make_symbolic(&y, sizeof y, "y");

  if (!x) { // should give x = 0 hit by ivc
    printf("ok\n");
  } else {
    if (swap(y) == 0x00020000) { // should give y = 2 missed by ivc
      printf("ok\n");
    }
  }

  return 0;
}