llvm-gcc-4.2/gcc/testsuite/gcc.target/arm/stack-corruption.c

/* { dg-do compile } */
/* { dg-options "-O -mthumb -fno-omit-frame-pointer" } */

int main() {
  return 0;
}

/* { dg-final { scan-assembler-not "\tadd\tr7, sp, #8\n" } } */