type ABIParamResultInfo struct {
inparams []ABIParamAssignment // Includes receiver for method calls. Does NOT include hidden closure pointer.
outparams []ABIParamAssignment
- intSpillSlots int
- floatSpillSlots int
offsetToSpillArea int64
+ spillAreaSize int64
config *ABIConfig // to enable String() method
}
return a.outparams[i]
}
-func (a *ABIParamResultInfo) IntSpillCount() int {
- return a.intSpillSlots
-}
-
-func (a *ABIParamResultInfo) FloatSpillCount() int {
- return a.floatSpillSlots
-}
-
func (a *ABIParamResultInfo) SpillAreaOffset() int64 {
return a.offsetToSpillArea
}
+func (a *ABIParamResultInfo) SpillAreaSize() int64 {
+ return a.spillAreaSize
+}
+
// RegIndex stores the index into the set of machine registers used by
// the ABI on a specific architecture for parameter passing. RegIndex
// values 0 through N-1 (where N is the number of integer registers
type ABIParamAssignment struct {
Type *types.Type
Registers []RegIndex
- Offset int32
+ offset int32
+}
+
+// Offset returns the stack offset for addressing the parameter that "a" describes.
+// This will panic if "a" describes a register-allocated parameter.
+func (a *ABIParamAssignment) Offset() int32 {
+ if len(a.Registers) > 0 {
+ panic("Register allocated parameters have no offset")
+ }
+ return a.offset
+}
+
+// SpillOffset returns the offset *within the spill area* for the parameter that "a" describes.
+// Registers will be spilled here; if a memory home is needed (for a pointer method e.g.)
+// then that will be the address.
+// This will panic if "a" describes a stack-allocated parameter.
+func (a *ABIParamAssignment) SpillOffset() int32 {
+ if len(a.Registers) == 0 {
+ panic("Stack-allocated parameters have no spill offset")
+ }
+ return a.offset
}
// RegAmounts holds a specified number of integer/float registers.
// by the ABI rules for parameter passing and result returning.
type ABIConfig struct {
// Do we need anything more than this?
- regAmounts RegAmounts
+ regAmounts RegAmounts
+ regsForTypeCache map[*types.Type]int
}
// NewABIConfig returns a new ABI configuration for an architecture with
// iRegsCount integer/pointer registers and fRegsCount floating point registers.
func NewABIConfig(iRegsCount, fRegsCount int) *ABIConfig {
- return &ABIConfig{RegAmounts{iRegsCount, fRegsCount}}
+ return &ABIConfig{regAmounts: RegAmounts{iRegsCount, fRegsCount}, regsForTypeCache: make(map[*types.Type]int)}
+}
+
+// NumParamRegs returns the number of parameter registers used for a given type,
+// without regard for the number available.
+func (a *ABIConfig) NumParamRegs(t *types.Type) int {
+ if n, ok := a.regsForTypeCache[t]; ok {
+ return n
+ }
+
+ if t.IsScalar() || t.IsPtrShaped() {
+ var n int
+ if t.IsComplex() {
+ n = 2
+ } else {
+ n = (int(t.Size()) + types.RegSize - 1) / types.RegSize
+ }
+ a.regsForTypeCache[t] = n
+ return n
+ }
+ typ := t.Kind()
+ n := 0
+ switch typ {
+ case types.TARRAY:
+ n = a.NumParamRegs(t.Elem()) * int(t.NumElem())
+ case types.TSTRUCT:
+ for _, f := range t.FieldSlice() {
+ n += a.NumParamRegs(f.Type)
+ }
+ case types.TSLICE:
+ n = a.NumParamRegs(synthSlice)
+ case types.TSTRING:
+ n = a.NumParamRegs(synthString)
+ case types.TINTER:
+ n = a.NumParamRegs(synthIface)
+ }
+ a.regsForTypeCache[t] = n
+ return n
}
// ABIAnalyze takes a function type 't' and an ABI rules description
// 'config' and analyzes the function to determine how its parameters
// and results will be passed (in registers or on the stack), returning
// an ABIParamResultInfo object that holds the results of the analysis.
-func ABIAnalyze(t *types.Type, config *ABIConfig) ABIParamResultInfo {
+func (config *ABIConfig) ABIAnalyze(t *types.Type) ABIParamResultInfo {
setup()
s := assignState{
rTotal: config.regAmounts,
if t.NumRecvs() != 0 {
rfsl := ft.Receiver.FieldSlice()
result.inparams = append(result.inparams,
- s.assignParamOrReturn(rfsl[0].Type))
+ s.assignParamOrReturn(rfsl[0].Type, false))
}
// Inputs
ifsl := ft.Params.FieldSlice()
for _, f := range ifsl {
result.inparams = append(result.inparams,
- s.assignParamOrReturn(f.Type))
+ s.assignParamOrReturn(f.Type, false))
}
s.stackOffset = types.Rnd(s.stackOffset, int64(types.RegSize))
- // Record number of spill slots needed.
- result.intSpillSlots = s.rUsed.intRegs
- result.floatSpillSlots = s.rUsed.floatRegs
-
// Outputs
s.rUsed = RegAmounts{}
ofsl := ft.Results.FieldSlice()
for _, f := range ofsl {
- result.outparams = append(result.outparams, s.assignParamOrReturn(f.Type))
+ result.outparams = append(result.outparams, s.assignParamOrReturn(f.Type, true))
}
- result.offsetToSpillArea = s.stackOffset
+ // The spill area is at a register-aligned offset and its size is rounded up to a register alignment.
+ // TODO in theory could align offset only to minimum required by spilled data types.
+ result.offsetToSpillArea = alignTo(s.stackOffset, types.RegSize)
+ result.spillAreaSize = alignTo(s.spillOffset, types.RegSize)
return result
}
// form, suitable for debugging or unit testing.
func (ri *ABIParamAssignment) toString(config *ABIConfig) string {
regs := "R{"
+ offname := "spilloffset" // offset is for spill for register(s)
+ if len(ri.Registers) == 0 {
+ offname = "offset" // offset is for memory arg
+ }
for _, r := range ri.Registers {
regs += " " + config.regAmounts.regString(r)
}
- return fmt.Sprintf("%s } offset: %d typ: %v", regs, ri.Offset, ri.Type)
+ return fmt.Sprintf("%s } %s: %d typ: %v", regs, offname, ri.offset, ri.Type)
}
// toString method renders an ABIParamResultInfo in human-readable
for k, r := range ri.outparams {
res += fmt.Sprintf("OUT %d: %s\n", k, r.toString(ri.config))
}
- res += fmt.Sprintf("intspill: %d floatspill: %d offsetToSpillArea: %d",
- ri.intSpillSlots, ri.floatSpillSlots, ri.offsetToSpillArea)
+ res += fmt.Sprintf("offsetToSpillArea: %d spillAreaSize: %d",
+ ri.offsetToSpillArea, ri.spillAreaSize)
return res
}
rUsed RegAmounts // regs used by params completely assigned so far
pUsed RegAmounts // regs used by the current param (or pieces therein)
stackOffset int64 // current stack offset
+ spillOffset int64 // current spill offset
+}
+
+// align returns a rounded up to t's alignment
+func align(a int64, t *types.Type) int64 {
+ return alignTo(a, int(t.Align))
+}
+
+// alignTo returns a rounded up to t, where t must be 0 or a power of 2.
+func alignTo(a int64, t int) int64 {
+ if t == 0 {
+ return a
+ }
+ return types.Rnd(a, int64(t))
}
// stackSlot returns a stack offset for a param or result of the
// specified type.
func (state *assignState) stackSlot(t *types.Type) int64 {
- if t.Align > 0 {
- state.stackOffset = types.Rnd(state.stackOffset, int64(t.Align))
- }
- rv := state.stackOffset
- state.stackOffset += t.Width
+ rv := align(state.stackOffset, t)
+ state.stackOffset = rv + t.Width
return rv
}
// regAllocate creates a register ABIParamAssignment object for a param
// or result with the specified type, as a final step (this assumes
// that all of the safety/suitability analysis is complete).
-func (state *assignState) regAllocate(t *types.Type) ABIParamAssignment {
+func (state *assignState) regAllocate(t *types.Type, isReturn bool) ABIParamAssignment {
+ spillLoc := int64(-1)
+ if !isReturn {
+ // Spill for register-resident t must be aligned for storage of a t.
+ spillLoc = align(state.spillOffset, t)
+ state.spillOffset = spillLoc + t.Size()
+ }
return ABIParamAssignment{
Type: t,
Registers: state.allocateRegs(),
- Offset: -1,
+ offset: int32(spillLoc),
}
}
func (state *assignState) stackAllocate(t *types.Type) ABIParamAssignment {
return ABIParamAssignment{
Type: t,
- Offset: int32(state.stackSlot(t)),
+ offset: int32(state.stackSlot(t)),
}
}
// accordingly).
func (state *assignState) regassignIntegral(t *types.Type) bool {
regsNeeded := int(types.Rnd(t.Width, int64(types.PtrSize)) / int64(types.PtrSize))
+ if t.IsComplex() {
+ regsNeeded = 2
+ }
// Floating point and complex.
if t.IsFloat() || t.IsComplex() {
// of type 'pt' to determine whether it can be register assigned.
// The result of the analysis is recorded in the result
// ABIParamResultInfo held in 'state'.
-func (state *assignState) assignParamOrReturn(pt *types.Type) ABIParamAssignment {
+func (state *assignState) assignParamOrReturn(pt *types.Type, isReturn bool) ABIParamAssignment {
state.pUsed = RegAmounts{}
if pt.Width == types.BADWIDTH {
panic("should never happen")
} else if pt.Width == 0 {
return state.stackAllocate(pt)
} else if state.regassign(pt) {
- return state.regAllocate(pt)
+ return state.regAllocate(pt, isReturn)
} else {
return state.stackAllocate(pt)
}
// AMD64 registers available:
// - integer: RAX, RBX, RCX, RDI, RSI, R8, R9, r10, R11
// - floating point: X0 - X14
-var configAMD64 = abi.NewABIConfig(9,15)
+var configAMD64 = abi.NewABIConfig(9, 15)
func TestMain(m *testing.M) {
ssagen.Arch.LinkArch = &x86.Linkamd64
// expected results
exp := makeExpectedDump(`
- IN 0: R{ I0 } offset: -1 typ: int32
- OUT 0: R{ I0 } offset: -1 typ: int32
- intspill: 1 floatspill: 0 offsetToSpillArea: 0
+ IN 0: R{ I0 } spilloffset: 0 typ: int32
+ OUT 0: R{ I0 } spilloffset: -1 typ: int32
+ offsetToSpillArea: 0 spillAreaSize: 8
`)
abitest(t, ft, exp)
i8, i16, i32, i64},
[]*types.Type{i32, f64, f64})
exp := makeExpectedDump(`
- IN 0: R{ I0 } offset: -1 typ: int8
- IN 1: R{ I1 } offset: -1 typ: int16
- IN 2: R{ I2 } offset: -1 typ: int32
- IN 3: R{ I3 } offset: -1 typ: int64
- IN 4: R{ F0 } offset: -1 typ: float32
- IN 5: R{ F1 } offset: -1 typ: float32
- IN 6: R{ F2 } offset: -1 typ: float64
- IN 7: R{ F3 } offset: -1 typ: float64
- IN 8: R{ I4 } offset: -1 typ: int8
- IN 9: R{ I5 } offset: -1 typ: int16
- IN 10: R{ I6 } offset: -1 typ: int32
- IN 11: R{ I7 } offset: -1 typ: int64
- IN 12: R{ F4 } offset: -1 typ: float32
- IN 13: R{ F5 } offset: -1 typ: float32
- IN 14: R{ F6 } offset: -1 typ: float64
- IN 15: R{ F7 } offset: -1 typ: float64
- IN 16: R{ F8 F9 } offset: -1 typ: complex128
- IN 17: R{ F10 F11 } offset: -1 typ: complex128
- IN 18: R{ F12 F13 } offset: -1 typ: complex128
- IN 19: R{ } offset: 0 typ: complex128
- IN 20: R{ F14 } offset: -1 typ: complex64
- IN 21: R{ I8 } offset: -1 typ: int8
- IN 22: R{ } offset: 16 typ: int16
- IN 23: R{ } offset: 20 typ: int32
- IN 24: R{ } offset: 24 typ: int64
- IN 25: R{ } offset: 32 typ: int8
- IN 26: R{ } offset: 34 typ: int16
- IN 27: R{ } offset: 36 typ: int32
- IN 28: R{ } offset: 40 typ: int64
- OUT 0: R{ I0 } offset: -1 typ: int32
- OUT 1: R{ F0 } offset: -1 typ: float64
- OUT 2: R{ F1 } offset: -1 typ: float64
- intspill: 9 floatspill: 15 offsetToSpillArea: 48
+ IN 0: R{ I0 } spilloffset: 0 typ: int8
+ IN 1: R{ I1 } spilloffset: 2 typ: int16
+ IN 2: R{ I2 } spilloffset: 4 typ: int32
+ IN 3: R{ I3 } spilloffset: 8 typ: int64
+ IN 4: R{ F0 } spilloffset: 16 typ: float32
+ IN 5: R{ F1 } spilloffset: 20 typ: float32
+ IN 6: R{ F2 } spilloffset: 24 typ: float64
+ IN 7: R{ F3 } spilloffset: 32 typ: float64
+ IN 8: R{ I4 } spilloffset: 40 typ: int8
+ IN 9: R{ I5 } spilloffset: 42 typ: int16
+ IN 10: R{ I6 } spilloffset: 44 typ: int32
+ IN 11: R{ I7 } spilloffset: 48 typ: int64
+ IN 12: R{ F4 } spilloffset: 56 typ: float32
+ IN 13: R{ F5 } spilloffset: 60 typ: float32
+ IN 14: R{ F6 } spilloffset: 64 typ: float64
+ IN 15: R{ F7 } spilloffset: 72 typ: float64
+ IN 16: R{ F8 F9 } spilloffset: 80 typ: complex128
+ IN 17: R{ F10 F11 } spilloffset: 96 typ: complex128
+ IN 18: R{ F12 F13 } spilloffset: 112 typ: complex128
+ IN 19: R{ } offset: 0 typ: complex128
+ IN 20: R{ } offset: 16 typ: complex64
+ IN 21: R{ I8 } spilloffset: 128 typ: int8
+ IN 22: R{ } offset: 24 typ: int16
+ IN 23: R{ } offset: 28 typ: int32
+ IN 24: R{ } offset: 32 typ: int64
+ IN 25: R{ } offset: 40 typ: int8
+ IN 26: R{ } offset: 42 typ: int16
+ IN 27: R{ } offset: 44 typ: int32
+ IN 28: R{ } offset: 48 typ: int64
+ OUT 0: R{ I0 } spilloffset: -1 typ: int32
+ OUT 1: R{ F0 } spilloffset: -1 typ: float64
+ OUT 2: R{ F1 } spilloffset: -1 typ: float64
+ offsetToSpillArea: 56 spillAreaSize: 136
`)
abitest(t, ft, exp)
[]*types.Type{a2, a1, ae, aa1})
exp := makeExpectedDump(`
- IN 0: R{ I0 } offset: -1 typ: [1]int32
- IN 1: R{ } offset: 0 typ: [0]int32
- IN 2: R{ I1 } offset: -1 typ: [1][1]int32
- IN 3: R{ } offset: 0 typ: [2]int32
- OUT 0: R{ } offset: 8 typ: [2]int32
- OUT 1: R{ I0 } offset: -1 typ: [1]int32
- OUT 2: R{ } offset: 16 typ: [0]int32
- OUT 3: R{ I1 } offset: -1 typ: [1][1]int32
- intspill: 2 floatspill: 0 offsetToSpillArea: 16
+ IN 0: R{ I0 } spilloffset: 0 typ: [1]int32
+ IN 1: R{ } offset: 0 typ: [0]int32
+ IN 2: R{ I1 } spilloffset: 4 typ: [1][1]int32
+ IN 3: R{ } offset: 0 typ: [2]int32
+ OUT 0: R{ } offset: 8 typ: [2]int32
+ OUT 1: R{ I0 } spilloffset: -1 typ: [1]int32
+ OUT 2: R{ } offset: 16 typ: [0]int32
+ OUT 3: R{ I1 } spilloffset: -1 typ: [1][1]int32
+ offsetToSpillArea: 16 spillAreaSize: 8
`)
abitest(t, ft, exp)
[]*types.Type{s, i8, i32})
exp := makeExpectedDump(`
- IN 0: R{ I0 } offset: -1 typ: int8
- IN 1: R{ I1 I2 I3 I4 } offset: -1 typ: struct { int8; int8; struct {}; int8; int16 }
- IN 2: R{ I5 } offset: -1 typ: int64
- OUT 0: R{ I0 I1 I2 I3 } offset: -1 typ: struct { int8; int8; struct {}; int8; int16 }
- OUT 1: R{ I4 } offset: -1 typ: int8
- OUT 2: R{ I5 } offset: -1 typ: int32
- intspill: 6 floatspill: 0 offsetToSpillArea: 0
+ IN 0: R{ I0 } spilloffset: 0 typ: int8
+ IN 1: R{ I1 I2 I3 I4 } spilloffset: 2 typ: struct { int8; int8; struct {}; int8; int16 }
+ IN 2: R{ I5 } spilloffset: 8 typ: int64
+ OUT 0: R{ I0 I1 I2 I3 } spilloffset: -1 typ: struct { int8; int8; struct {}; int8; int16 }
+ OUT 1: R{ I4 } spilloffset: -1 typ: int8
+ OUT 2: R{ I5 } spilloffset: -1 typ: int32
+ offsetToSpillArea: 0 spillAreaSize: 16
`)
abitest(t, ft, exp)
[]*types.Type{fs, fs})
exp := makeExpectedDump(`
- IN 0: R{ I0 } offset: -1 typ: struct { int64; struct {} }
- IN 1: R{ I1 } offset: -1 typ: struct { int64; struct {} }
- IN 2: R{ I2 F0 } offset: -1 typ: struct { float64; struct { int64; struct {} }; struct {} }
- OUT 0: R{ I0 F0 } offset: -1 typ: struct { float64; struct { int64; struct {} }; struct {} }
- OUT 1: R{ I1 F1 } offset: -1 typ: struct { float64; struct { int64; struct {} }; struct {} }
- intspill: 3 floatspill: 1 offsetToSpillArea: 0
+ IN 0: R{ I0 } spilloffset: 0 typ: struct { int64; struct {} }
+ IN 1: R{ I1 } spilloffset: 16 typ: struct { int64; struct {} }
+ IN 2: R{ I2 F0 } spilloffset: 32 typ: struct { float64; struct { int64; struct {} }; struct {} }
+ OUT 0: R{ I0 F0 } spilloffset: -1 typ: struct { float64; struct { int64; struct {} }; struct {} }
+ OUT 1: R{ I1 F1 } spilloffset: -1 typ: struct { float64; struct { int64; struct {} }; struct {} }
+ offsetToSpillArea: 0 spillAreaSize: 64
`)
abitest(t, ft, exp)
[]*types.Type{str, i64, str, sli32})
exp := makeExpectedDump(`
- IN 0: R{ I0 I1 I2 } offset: -1 typ: []int32
- IN 1: R{ I3 } offset: -1 typ: int8
- IN 2: R{ I4 I5 I6 } offset: -1 typ: []int32
- IN 3: R{ I7 } offset: -1 typ: int8
- IN 4: R{ } offset: 0 typ: string
- IN 5: R{ I8 } offset: -1 typ: int8
- IN 6: R{ } offset: 16 typ: int64
- IN 7: R{ } offset: 24 typ: []int32
- OUT 0: R{ I0 I1 } offset: -1 typ: string
- OUT 1: R{ I2 } offset: -1 typ: int64
- OUT 2: R{ I3 I4 } offset: -1 typ: string
- OUT 3: R{ I5 I6 I7 } offset: -1 typ: []int32
- intspill: 9 floatspill: 0 offsetToSpillArea: 48
+ IN 0: R{ I0 I1 I2 } spilloffset: 0 typ: []int32
+ IN 1: R{ I3 } spilloffset: 24 typ: int8
+ IN 2: R{ I4 I5 I6 } spilloffset: 32 typ: []int32
+ IN 3: R{ I7 } spilloffset: 56 typ: int8
+ IN 4: R{ } offset: 0 typ: string
+ IN 5: R{ I8 } spilloffset: 57 typ: int8
+ IN 6: R{ } offset: 16 typ: int64
+ IN 7: R{ } offset: 24 typ: []int32
+ OUT 0: R{ I0 I1 } spilloffset: -1 typ: string
+ OUT 1: R{ I2 } spilloffset: -1 typ: int64
+ OUT 2: R{ I3 I4 } spilloffset: -1 typ: string
+ OUT 3: R{ I5 I6 I7 } spilloffset: -1 typ: []int32
+ offsetToSpillArea: 48 spillAreaSize: 64
`)
abitest(t, ft, exp)
[]*types.Type{a7, f64, i64})
exp := makeExpectedDump(`
- IN 0: R{ I0 I1 I2 } offset: -1 typ: struct { int16; int16; int16 }
- IN 1: R{ I3 } offset: -1 typ: *struct { int16; int16; int16 }
- IN 2: R{ } offset: 0 typ: [7]*struct { int16; int16; int16 }
- IN 3: R{ F0 } offset: -1 typ: float64
- IN 4: R{ I4 } offset: -1 typ: int16
- IN 5: R{ I5 } offset: -1 typ: int16
- IN 6: R{ I6 } offset: -1 typ: int16
- OUT 0: R{ } offset: 56 typ: [7]*struct { int16; int16; int16 }
- OUT 1: R{ F0 } offset: -1 typ: float64
- OUT 2: R{ I0 } offset: -1 typ: int64
- intspill: 7 floatspill: 1 offsetToSpillArea: 112
+ IN 0: R{ I0 I1 I2 } spilloffset: 0 typ: struct { int16; int16; int16 }
+ IN 1: R{ I3 } spilloffset: 8 typ: *struct { int16; int16; int16 }
+ IN 2: R{ } offset: 0 typ: [7]*struct { int16; int16; int16 }
+ IN 3: R{ F0 } spilloffset: 16 typ: float64
+ IN 4: R{ I4 } spilloffset: 24 typ: int16
+ IN 5: R{ I5 } spilloffset: 26 typ: int16
+ IN 6: R{ I6 } spilloffset: 28 typ: int16
+ OUT 0: R{ } offset: 56 typ: [7]*struct { int16; int16; int16 }
+ OUT 1: R{ F0 } spilloffset: -1 typ: float64
+ OUT 2: R{ I0 } spilloffset: -1 typ: int64
+ offsetToSpillArea: 112 spillAreaSize: 32
`)
abitest(t, ft, exp)
[]*types.Type{ei, nei, pei})
exp := makeExpectedDump(`
- IN 0: R{ I0 I1 I2 } offset: -1 typ: struct { int16; int16; bool }
- IN 1: R{ I3 I4 } offset: -1 typ: interface {}
- IN 2: R{ I5 I6 } offset: -1 typ: interface {}
- IN 3: R{ I7 I8 } offset: -1 typ: interface { () untyped string }
- IN 4: R{ } offset: 0 typ: *interface {}
- IN 5: R{ } offset: 8 typ: interface { () untyped string }
- IN 6: R{ } offset: 24 typ: int16
- OUT 0: R{ I0 I1 } offset: -1 typ: interface {}
- OUT 1: R{ I2 I3 } offset: -1 typ: interface { () untyped string }
- OUT 2: R{ I4 } offset: -1 typ: *interface {}
- intspill: 9 floatspill: 0 offsetToSpillArea: 32
+ IN 0: R{ I0 I1 I2 } spilloffset: 0 typ: struct { int16; int16; bool }
+ IN 1: R{ I3 I4 } spilloffset: 8 typ: interface {}
+ IN 2: R{ I5 I6 } spilloffset: 24 typ: interface {}
+ IN 3: R{ I7 I8 } spilloffset: 40 typ: interface { () untyped string }
+ IN 4: R{ } offset: 0 typ: *interface {}
+ IN 5: R{ } offset: 8 typ: interface { () untyped string }
+ IN 6: R{ } offset: 24 typ: int16
+ OUT 0: R{ I0 I1 } spilloffset: -1 typ: interface {}
+ OUT 1: R{ I2 I3 } spilloffset: -1 typ: interface { () untyped string }
+ OUT 2: R{ I4 } spilloffset: -1 typ: *interface {}
+ offsetToSpillArea: 32 spillAreaSize: 56
`)
abitest(t, ft, exp)
}
+
+func TestABINumParamRegs(t *testing.T) {
+ i8 := types.Types[types.TINT8]
+ i16 := types.Types[types.TINT16]
+ i32 := types.Types[types.TINT32]
+ i64 := types.Types[types.TINT64]
+ f32 := types.Types[types.TFLOAT32]
+ f64 := types.Types[types.TFLOAT64]
+ c64 := types.Types[types.TCOMPLEX64]
+ c128 := types.Types[types.TCOMPLEX128]
+
+ s := mkstruct([]*types.Type{i8, i8, mkstruct([]*types.Type{}), i8, i16})
+ a := types.NewArray(s, 3)
+
+ nrtest(t, i8, 1)
+ nrtest(t, i16, 1)
+ nrtest(t, i32, 1)
+ nrtest(t, i64, 1)
+ nrtest(t, f32, 1)
+ nrtest(t, f64, 1)
+ nrtest(t, c64, 2)
+ nrtest(t, c128, 2)
+ nrtest(t, s, 4)
+ nrtest(t, a, 12)
+
+}
\ No newline at end of file