cmd/internal/obj/arm64: remove unncessary class check in addpool

The argument class check in addpool is unnecessary, remove it so that we don't
need to list all the compatiable classes.

Change-Id: I36f6594db35e25db22fe898273e024c2db4cb771
Reviewed-on: https://go-review.googlesource.com/c/go/+/283492
Trust: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

src/cmd/internal/obj/arm64/asm7.go

@@ -1251,101 +1251,8 @@ func (c *ctxt7) addpool(p *obj.Prog, a *obj.Addr) {
 		sz = 8
 	}
 
-	switch cls {
+	t.To.Type = obj.TYPE_CONST
-	// TODO(aram): remove.
+	t.To.Offset = lit
-	default:
-		if a.Name != obj.NAME_EXTERN {
-			fmt.Printf("addpool: %v in %v shouldn't go to default case\n", DRconv(cls), p)
-		}
-
-		t.To.Offset = a.Offset
-		t.To.Sym = a.Sym
-		t.To.Type = a.Type
-		t.To.Name = a.Name
-
-	/* This is here because MOV uint12<<12, R is disabled in optab.
-	Because of this, we need to load the constant from memory. */
-	case C_ADDCON:
-		fallthrough
-
-	case C_ADDCON2,
-		C_LCON,
-		C_VCON,
-		C_LACON,
-
-		C_ZAUTO,
-		C_NSAUTO_16,
-		C_NSAUTO_8,
-		C_NSAUTO_4,
-		C_NSAUTO,
-		C_NPAUTO_16,
-		C_NPAUTO,
-		C_NQAUTO_16,
-		C_NAUTO4K,
-		C_PSAUTO_16,
-		C_PSAUTO_8,
-		C_PSAUTO_4,
-		C_PSAUTO,
-		C_PPAUTO_16,
-		C_PPAUTO,
-		C_PQAUTO_16,
-		C_UAUTO4K_16,
-		C_UAUTO4K_8,
-		C_UAUTO4K_4,
-		C_UAUTO4K_2,
-		C_UAUTO4K,
-		C_UAUTO8K_16,
-		C_UAUTO8K_8,
-		C_UAUTO8K_4,
-		C_UAUTO8K,
-		C_UAUTO16K_16,
-		C_UAUTO16K_8,
-		C_UAUTO16K,
-		C_UAUTO32K_16,
-		C_UAUTO32K,
-		C_UAUTO64K,
-		C_LAUTO,
-
-		C_ZOREG,
-		C_NSOREG_16,
-		C_NSOREG_8,
-		C_NSOREG_4,
-		C_NSOREG,
-		C_NPOREG_16,
-		C_NPOREG,
-		C_NQOREG_16,
-		C_NOREG4K,
-		C_PSOREG_16,
-		C_PSOREG_8,
-		C_PSOREG_4,
-		C_PSOREG,
-		C_PPOREG_16,
-		C_PPOREG,
-		C_PQOREG_16,
-		C_UOREG4K_16,
-		C_UOREG4K_8,
-		C_UOREG4K_4,
-		C_UOREG4K_2,
-		C_UOREG4K,
-		C_UOREG8K_16,
-		C_UOREG8K_8,
-		C_UOREG8K_4,
-		C_UOREG8K,
-		C_UOREG16K_16,
-		C_UOREG16K_8,
-		C_UOREG16K,
-		C_UOREG32K_16,
-		C_UOREG32K,
-		C_UOREG64K,
-		C_LOREG:
-		if a.Name == obj.NAME_EXTERN {
-			fmt.Printf("addpool: %v in %v needs reloc\n", DRconv(cls), p)
-		}
-
-		t.To.Type = obj.TYPE_CONST
-		t.To.Offset = lit
-		break
-	}
 
 	for q := c.blitrl; q != nil; q = q.Link { /* could hash on t.t0.offset */
 		if q.To == t.To {