clang why you so noisy?!??!

test.c

#include <stdio.h>

int main() {
  int i = 0;

  if(++i) {
    printf("1\n");
  }

  if(i = 1) {
    printf("2\n");
  }

  i = 0;

  if(i += 1) {
    printf("3\n");
  }

  if(i == 1) {
    printf("4\n");
  }

  return 1;

}