case "amd64":
		if cfg.Goos == "darwin" {
			return []string{"-arch", "x86_64", "-m64"}
		}
		return []string{"-m64"}
	case "arm64":
		if cfg.Goos == "darwin" {
			return []string{"-arch", "arm64"}
		}
	case "arm":
		return []string{"-marm"} // not thumb
	case "s390x":
		return []string{"-m64", "-march=z196"}
	case "mips64", "mips64le":
		args := []string{"-mabi=64"}

	{Zr_m_xm_nr, 1, argList{Ymr, Ym}},  // 0x7f MMX MOVQ
	{Zm_r_xm_nr, 2, argList{Yxr, Ymr}}, // Pf2, 0xd6 MOVDQ2Q
	{Zm_r_xm_nr, 2, argList{Yxm, Yxr}}, // Pf3, 0x7e MOVQ xmm1/m64 -> xmm2
	{Zr_m_xm_nr, 2, argList{Yxr, Yxm}}, // Pe, 0xd6 MOVQ xmm1 -> xmm2/m64

	// valid only in 64-bit mode, usually with 64-bit prefix
	{Zr_m, 1, argList{Yrl, Yml}},      // 0x89
	{Zm_r, 1, argList{Yml, Yrl}},      // 0x8b

		t.Errorf("Interface MethodByName returned %d; want 425", i)
	}

	// For issue #33628: method args are not stored at the right offset
	// on amd64p32.
	m64 := ValueOf(&p).MethodByName("Int64Method").Interface().(func(int64) int64)
	if x := m64(123); x != 123 {
		t.Errorf("Int64Method returned %d; want 123", x)
	}
	m32 := ValueOf(&p).MethodByName("Int32Method").Interface().(func(int32) int32)