Golang Call.Common方法代碼示例

func (f *Function) SimdIntrinsic(call *ssa.Call) (string, *Error) {
	var asm string
	var err *Error

	args := call.Common().Args
	x := f.Ident(args[0])
	y := f.Ident(args[1])
	result := f.Ident(call)
	name := call.Common().StaticCallee().Name()
	if simdinstr, ok := getSimdInstr(name); ok {
		if result.typ != x.typ {
			panic(ice(fmt.Sprintf("Simd variable type (%v) and op type (%v)  dont match", result.typ.String(), x.typ.String())))
		}
		optypes := GetOpDataType(x.typ)
		a, e := packedOp(f, call, simdinstr, optypes.xmmvariant, y, x, result)
		asm = a
		err = e
	} else {
		intrinsic, ok := intrinsics[name]
		if !ok {
			panic(ice(fmt.Sprintf("Expected simd intrinsic got (%v)", name)))
		}
		a, e := intrinsic(f, call, x, y, result)
		asm = a
		err = e
	}
	asm = fmt.Sprintf("// BEGIN SIMD Intrinsic %v\n", call) + asm +
		fmt.Sprintf("// END SIMD Intrinsic %v\n", call)
	return asm, err
}

func (f *Function) Len(call *ssa.Call) (string, *Error) {
	asm := fmt.Sprintf("// BEGIN Builtin.Len: %v\n", call)
	callcommon := call.Common()
	arg := callcommon.Args[0]
	ctx := context{f, call}
	if callcommon.IsInvoke() {
		panic(ice("len is a function, not a method"))
	}
	if len(callcommon.Args) != 1 {
		panic(ice(fmt.Sprintf("too many args (%v) for len", len(callcommon.Args))))
	}

	ident := f.Ident(call.Value())
	if reflectType(ident.typ).Name() != "int" {
		panic(ice(fmt.Sprintf("len returns int not (%v)", reflectType(ident.typ).Name())))
	}

	if isArray(arg.Type()) {

		length := reflectType(arg.Type()).Len()
		if length >= math.MaxInt32 {
			panic(ice(fmt.Sprintf("array too large (%v), maximum (%v)", length, math.MaxInt32)))
		}
		a, reg := f.allocIdentReg(call, ident, sizeof(ident.typ))
		asm += a
		asm += MovImm32Reg(ctx, int32(length), reg, false)
		a, err := f.StoreValue(call, ident, reg)
		asm += a
		if err != nil {
			return asm, err
		}

	} else if isSlice(arg.Type()) {
		a, err := f.SliceLen(call, arg, ident)
		asm += a
		if err != nil {
			return asm, err
		}

	} else {
		panic(ice(fmt.Sprintf("bad type (%v) passed to len", arg.Type())))
	}
	asm += fmt.Sprintf("// END Builtin.Len: %v\n", call)
	return asm, nil
}

func isSSE2Intrinsic(call *ssa.Call) (Intrinsic, bool) {
	if call.Common() == nil || call.Common().StaticCallee() == nil {
		return Intrinsic{}, false
	}
	name := call.Common().StaticCallee().Name()
	return getSSE2(name)
}

func isSimdIntrinsic(call *ssa.Call) bool {
	if call.Common() == nil || call.Common().StaticCallee() == nil {
		return false
	}
	name := call.Common().StaticCallee().Name()
	if _, ok := getSimdInstr(name); ok {
		return ok
	} else {
		_, ok := intrinsics[name]
		return ok
	}
}

func (f *Function) SSE2Intrinsic(call *ssa.Call, sse2intrinsic Intrinsic) (string, *Error) {
	args := call.Common().Args
	return sse2Intrinsic(f, call, call, sse2intrinsic, args), nil
}

func (f *Function) Call(call *ssa.Call) (string, *Error) {
	common := call.Common()
	funct := common.Value
	if builtin, ok := funct.(*ssa.Builtin); ok {
		return f.Builtin(call, builtin)
	}
	if isSimdIntrinsic(call) {
		return f.SimdIntrinsic(call)
	}
	if sse2instr, ok := isSSE2Intrinsic(call); ok {
		return f.SSE2Intrinsic(call, sse2instr)
	}
	name := "UNKNOWN FUNC NAME"
	if call.Common().Method != nil {
		name = call.Common().Method.Name()
	} else if call.Common().StaticCallee() != nil {
		name = call.Common().StaticCallee().Name()
	}
	msg := fmt.Sprintf("function calls are not supported, func name (%v), description (%v)",
		name, call.Common().Description())
	return ErrorMsg(msg)

}

// Call performs call on a given unprepared call context.
func (caller *Function) Call(call *ssa.Call, infer *TypeInfer, b *Block, l *Loop) {
	if call == nil {
		infer.Logger.Fatal("Call is nil")
		return
	}
	common := call.Common()
	switch fn := common.Value.(type) {
	case *ssa.Builtin:
		switch fn.Name() {
		case "close":
			ch, ok := caller.locals[common.Args[0]]
			if !ok {
				infer.Logger.Fatalf("call close: %s: %s", common.Args[0].Name(), ErrUnknownValue)
				return
			}
			if paramName, ok := caller.revlookup[ch.String()]; ok {
				caller.FuncDef.AddStmts(&migo.CloseStatement{Chan: paramName})
			} else {
				if _, ok := common.Args[0].(*ssa.Phi); ok {
					caller.FuncDef.AddStmts(&migo.CloseStatement{Chan: common.Args[0].Name()})
				} else {
					caller.FuncDef.AddStmts(&migo.CloseStatement{Chan: ch.(*Value).Name()})
				}
			}
			infer.Logger.Print(caller.Sprintf("close %s", common.Args[0]))
			return
		case "len":
			if l.State == Enter {
				len, err := caller.callLen(common, infer)
				if err == ErrRuntimeLen {
					l.Bound = Dynamic
					return
				}
				l.Bound, l.End = Static, len
				return
			}
			caller.locals[call] = &Value{call, caller.InstanceID(), l.Index}
			infer.Logger.Printf(caller.Sprintf("  builtin.%s", common.String()))
		default:
			infer.Logger.Printf(caller.Sprintf("  builtin.%s", common.String()))
		}
	case *ssa.MakeClosure:
		infer.Logger.Printf(caller.Sprintf(SkipSymbol+" make closure %s", fn.String()))
		caller.callClosure(common, fn, infer, b, l)
	case *ssa.Function:
		if common.StaticCallee() == nil {
			infer.Logger.Fatal("Call with nil CallCommon")
		}
		callee := caller.callFn(common, infer, b, l)
		if callee != nil {
			caller.storeRetvals(infer, call.Value(), callee)
		}
	default:
		if !common.IsInvoke() {
			infer.Logger.Print("Unknown call type", common.String(), common.Description())
			return
		}
		callee := caller.invoke(common, infer, b, l)
		if callee != nil {
			caller.storeRetvals(infer, call.Value(), callee)
		} else {
			// Mock out the return values.
			switch common.Signature().Results().Len() {
			case 0:
			case 1:
				caller.locals[call.Value()] = &External{
					parent: caller.Fn,
					typ:    call.Value().Type().Underlying(),
				}
			case 2:
				caller.locals[call.Value()] = &External{typ: call.Value().Type().Underlying()}
				caller.tuples[caller.locals[call.Value()]] = make(Tuples, common.Signature().Results().Len())
			}
		}
	}
}

func (caller *frame) call(c *ssa.Call) {
	caller.callCommon(c, c.Common())
}