never_inline
void HugeFill(dword *t, dword c, int len)
{
	__m128i val4 = _mm_set1_epi32(*(int*)&c);
	auto Set4S = [&](int at) { _mm_stream_si128((__m128i *)(t + at), val4); };
	while((uintptr_t)t & 15) { // align to 16 bytes for SSE
		*t++ = c;
		len--;
	}
	while(len >= 16) {
		Set4S(0);
		Set4S(4);
		Set4S(8);
		Set4S(12);
		t += 16;
		len -= 16;
	}
	while(len--)
		*t++ = c;
	_mm_sfence();
}

void Fill6(dword *t, dword c, int len)
{
	if(len >= 4) {
		__m128i val4 = _mm_set1_epi32(*(int*)&c);
		auto Set4 = [&](int at) { _mm_storeu_si128((__m128i *)(t + at), val4); };
		if(len > 4*1024*1024 / 4) {
			HugeFill(t, c, len);
			return;
		}
		while(len >= 16) {
			Set4(0);
			Set4(4);
			Set4(8);
			Set4(12);
			t += 16;
			len -= 16;
		}
		if(len & 8) {
			Set4(0);
			Set4(4);
			t += 8;
		}
		if(len & 4) {
			Set4(0);
			t += 4;
		}
	}
	if(len & 3)
		t[0] = t[(len & 2) >> 1] = t[(len & 2) & ((len & 1) << 1)] = c;
}