Question about Dir 4.3 when a static function contains only variable declaration, asm and return statement

[chenzhuowansui]

we have an additional question here, what about the following example, is it still acceptable:

Code:

static inline uint32_t test(void) {
uint32_t tmp;
__asm__ __volatile__( "mrc p15, 0, %0, c1, c0, 2\n\t" : "=r" (tmp) );
return tmp + 1;  // key point here, it's not simple return `tmp`
}

please help clarify for this case, many thanks in advance!