ADDEX R3, R5, $3, R6            // 7cc32f54
	ADDEX R3, $3, R5, R6            // 7cc32f54
	ADDIS $8, R3                    // 3c630008
	ADD   $524288, R3               // 3c630008
	ADDIS $1000, R3, R4             // 3c8303e8

	ANDCC $1, R3                    // 70630001
	ANDCC $1, R3, R4                // 70640001
	ANDCC $-1, R4                   // 3be0ffff7fe42039

// avoided.
func TestWriterReadFromCounts(t *testing.T) {
	var w0 writeCountingDiscard
	b0 := NewWriterSize(&w0, 1234)
	b0.WriteString(strings.Repeat("x", 1000))
	if w0 != 0 {
		t.Fatalf("write 1000 'x's: got %d writes, want 0", w0)
	}
	b0.WriteString(strings.Repeat("x", 200))
	if w0 != 0 {
		t.Fatalf("write 1200 'x's: got %d writes, want 0", w0)
	}

		if got := IndexRune([]byte(tt.in), tt.rune); got != tt.want {
			t.Errorf("IndexRune(%q, %d) = %v; want %v", tt.in, tt.rune, got, tt.want)
		}
	}

	haystack := []byte("test世界")
	allocs := testing.AllocsPerRun(1000, func() {
		if i := IndexRune(haystack, 's'); i != 2 {
			t.Fatalf("'s' at %d; want 2", i)
		}
		if i := IndexRune(haystack, '世'); i != 4 {
			t.Fatalf("'世' at %d; want 4", i)
		}
	})
	if allocs != 0 {

	FSTPS	(F3, F4), 11(RSP)   // fb2f00916313002d
	FSTPS	(F3, F4), 1024(RSP) // fb0310916313002d
	FSTPS	(F3, F4), x(SB)
	FSTPS	(F3, F4), x+8(SB)

// FLDPQ/FSTPQ
	FLDPQ   -4000(R0), (F1, F2)  // 1b803ed1610b40ad
	FLDPQ	-1024(R0), (F1, F2)  // 010860ad
	FLDPQ	(R0), (F1, F2)       // 010840ad
	FLDPQ	16(R0), (F1, F2)     // 018840ad
	FLDPQ	-16(R0), (F1, F2)    // 01887fad