break
		}
		t2 := auxToType(v_1.Aux)
		_ = v_1.Args[2]
		p2 := v_1.Args[0]
		v_1_2 := v_1.Args[2]
		if v_1_2.Op != OpStore {
			break
		}
		t3 := auxToType(v_1_2.Aux)
		_ = v_1_2.Args[2]
		p3 := v_1_2.Args[0]
		v_1_2_2 := v_1_2.Args[2]
		if v_1_2_2.Op != OpStore {
			break
		}
		t4 := auxToType(v_1_2_2.Aux)
		x := v_1_2_2.Args[1]
		p4 := v_1_2_2.Args[0]

TEXT _rt0_loong64_linux(SB),NOSPLIT|NOFRAME,$0
	// In a statically linked binary, the stack contains argc,
	// argv as argc string pointers followed by a NULL, envv as a
	// sequence of string pointers followed by a NULL, and auxv.
	// There is no TLS base pointer.
	MOVW	0(R3), R4	// argc
	ADDV	$8, R3, R5	// argv
	JMP	main(SB)

// When building with -buildmode=c-shared, this symbol is called when the shared
// library is loaded.

	"unsafe"
)

const (
	_HWCAP_VFP   = 1 << 6  // introduced in at least 2.6.11
	_HWCAP_VFPv3 = 1 << 13 // introduced in 2.6.30
)

func vdsoCall()

func checkgoarm() {
	// On Android, /proc/self/auxv might be unreadable and hwcap won't
	// reflect the CPU capabilities. Assume that every Android arm device
	// has the necessary floating point hardware available.
	if GOOS == "android" {
		return
	}

	ARM64.HasATOMICS = isSet(HWCap, hwcap_ATOMICS) && os != "android"

	// Check to see if executing on a Neoverse core and in order to do that,
	// check the AUXV for the CPUID bit. The getMIDR function executes an
	// instruction which would normally be an illegal instruction, but it's
	// trapped by the kernel, the value sanitized and then returned.

	if A.Find(3) != aib4.Find(3) {
		t.Errorf("Failed aliasing/reuse check, A/aib4")
	}

	aub1 := A.Union(B, first)
	assert(t, AUB, aub1, "aub1")
	if B.Find(3) != aub1.Find(3) {
		// B is larger, union favors reuse from larger when function is "first"
		t.Errorf("Failed aliasing/reuse check, A/aub1")
	}
	aub2 := A.Union(B, second)
	assert(t, AUB, aub2, "aub2")
	if B.Find(3) != aub2.Find(3) {

	return i.(s390x.RotateParams)
}

func StringToAux(s string) Aux {
	return stringAux(s)
}
func symToAux(s Sym) Aux {
	return s
}
func callToAux(s *AuxCall) Aux {
	return s
}
func typeToAux(t *types.Type) Aux {
	return t
}
func s390xCCMaskToAux(c s390x.CCMask) Aux {
	return c
}
func s390xRotateParamsToAux(r s390x.RotateParams) Aux {
	return r
}

    Et il est possible que pour votre cas d'utilisation, la solution se trouve dans l'un d'entre eux.

## Lisez d'abord le didacticiel

Vous pouvez utiliser la plupart des fonctionnalités de **FastAPI** grâce aux connaissances du [Tutoriel - Guide de l'utilisateur](../tutorial/index.md){.internal-link target=_blank}.

Et les sections suivantes supposent que vous l'avez lu et que vous en connaissez les idées principales.

				switch opcodeTable[v.Op].auxType {
				case auxSym:
					if v.Aux != nil {
						continue
					}
				case auxSymOff:
					if v.Aux != nil || v.AuxInt < 0 || v.AuxInt >= minZeroPage {
						continue
					}
				case auxSymValAndOff:
					off := ValAndOff(v.AuxInt).Off()
					if v.Aux != nil || off < 0 || off >= minZeroPage {
						continue
					}
				case auxInt32:

		i := auxIntToInt32(v.AuxInt)
		s := auxToSym(v.Aux)
		ptr := v_0
		x := v_1
		if x.Op != OpARM64MOVDstorezero || auxIntToInt32(x.AuxInt) != i+8 || auxToSym(x.Aux) != s {
			break
		}
		mem := x.Args[1]
		if ptr != x.Args[0] || !(x.Uses == 1 && setPos(v, x.Pos) && clobber(x)) {
			break
		}
		v.reset(OpARM64MOVQstorezero)
		v.AuxInt = int32ToAuxInt(i)
		v.Aux = symToAux(s)
		v.AddArg2(ptr, mem)

Mais en prêtant attention aux tests de performance et aux comparaisons, il faut tenir compte de ce qu'il suit.

## Tests de performance et rapidité