Source File
	malloc_generated.go

Belonging Package
	runtime

// Code generated by mkmalloc.go; DO NOT EDIT.
// See overview in malloc_stubs.go.

package runtime

import (
	"internal/goarch"
	"internal/goexperiment"
	"internal/runtime/sys"
	"unsafe"
)

func mallocgcSmallScanNoHeaderSC1(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(1<<1) | spanClass(0)
		const elemsize = uintptr(8)
		return mallocgcSmallScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 1
	const elemsize = 8

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(0)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(8)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		const elemsize = 8

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallScanNoHeaderSC2(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(2<<1) | spanClass(0)
		const elemsize = uintptr(16)
		return mallocgcSmallScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 2
	const elemsize = 16

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(0)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(16)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		const elemsize = 16

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallScanNoHeaderSC3(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(3<<1) | spanClass(0)
		const elemsize = uintptr(24)
		return mallocgcSmallScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 3
	const elemsize = 24

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(0)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(24)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		const elemsize = 24

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallScanNoHeaderSC4(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(4<<1) | spanClass(0)
		const elemsize = uintptr(32)
		return mallocgcSmallScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 4
	const elemsize = 32

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(0)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(32)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		const elemsize = 32

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallScanNoHeaderSC5(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(5<<1) | spanClass(0)
		const elemsize = uintptr(48)
		return mallocgcSmallScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 5
	const elemsize = 48

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(0)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(48)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		const elemsize = 48

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallScanNoHeaderSC6(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(6<<1) | spanClass(0)
		const elemsize = uintptr(64)
		return mallocgcSmallScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 6
	const elemsize = 64

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(0)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(64)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		const elemsize = 64

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallScanNoHeaderSC7(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(7<<1) | spanClass(0)
		const elemsize = uintptr(80)
		return mallocgcSmallScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 7
	const elemsize = 80

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(0)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(80)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		const elemsize = 80

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcTinySC2(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		return mallocgcTinySlowPath(size, typ, needzero)

	}

	lockRankMayQueueFinalizer()

	const elemsize = 16

	if doubleCheckMalloc {
		doubleCheckTiny(size, typ, mp)
	}
	mp.mallocing = 1

	c := getMCache(mp)
	off := c.tinyoffset

	if size&7 == 0 {
		off = alignUp(off, 8)
	} else if goarch.PtrSize == 4 && size == 12 {

		off = alignUp(off, 8)
	} else if size&3 == 0 {
		off = alignUp(off, 4)
	} else if size&1 == 0 {
		off = alignUp(off, 2)
	}
	if off+size <= maxTinySize && c.tiny != 0 {

		x := unsafe.Pointer(c.tiny + off)
		c.tinyoffset = off + size
		c.tinyAllocs++
		mp.mallocing = 0
		releasem(mp)
		const elemsize = 0

		return x
	}

	checkGCTrigger := false
	span := c.alloc[tinySpanClass]

	const nbytes = 8192
	const nelems = uint16((nbytes - unsafe.Sizeof(spanInlineMarkBits{})) / 16)
	var nextFreeFastResult gclinkptr
	if span.allocCache != 0 {
		theBit := sys.TrailingZeros64(span.allocCache)
		result := span.freeindex + uint16(theBit)
		if result < nelems {
			freeidx := result + 1
			if !(freeidx%64 == 0 && freeidx != nelems) {
				span.allocCache >>= uint(theBit + 1)
				span.freeindex = freeidx
				span.allocCount++
				nextFreeFastResult = gclinkptr(uintptr(result)*16 + span.base())
			}
		}
	}
	v := nextFreeFastResult
	if v == 0 {
		v, span, checkGCTrigger = c.nextFree(tinySpanClass)
	}
	x := unsafe.Pointer(v)
	(*[2]uint64)(x)[0] = 0
	(*[2]uint64)(x)[1] = 0

	if !raceenabled && (size < c.tinyoffset || c.tiny == 0) {

		c.tiny = uintptr(x)
		c.tinyoffset = size
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallNoScanSC2(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(2<<1) | spanClass(1)
		const elemsize = uintptr(16)
		return mallocgcSmallNoScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 2
	const elemsize = 16

	if doubleCheckMalloc {

		doubleCheckSmallNoScan(typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(1)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	if runtimeFreegcEnabled && c.hasReusableNoscan(spc) {

		x = mallocgcSmallNoscanReuse(c, span, spc, elemsize, needzero)
		mp.mallocing = 0
		releasem(mp)

		return x

	}

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if needzero && span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallNoScanSC3(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(3<<1) | spanClass(1)
		const elemsize = uintptr(24)
		return mallocgcSmallNoScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 3
	const elemsize = 24

	if doubleCheckMalloc {

		doubleCheckSmallNoScan(typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(1)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	if runtimeFreegcEnabled && c.hasReusableNoscan(spc) {

		x = mallocgcSmallNoscanReuse(c, span, spc, elemsize, needzero)
		mp.mallocing = 0
		releasem(mp)

		return x

	}

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if needzero && span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallNoScanSC4(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(4<<1) | spanClass(1)
		const elemsize = uintptr(32)
		return mallocgcSmallNoScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 4
	const elemsize = 32

	if doubleCheckMalloc {

		doubleCheckSmallNoScan(typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(1)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	if runtimeFreegcEnabled && c.hasReusableNoscan(spc) {

		x = mallocgcSmallNoscanReuse(c, span, spc, elemsize, needzero)
		mp.mallocing = 0
		releasem(mp)

		return x

	}

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if needzero && span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallNoScanSC5(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(5<<1) | spanClass(1)
		const elemsize = uintptr(48)
		return mallocgcSmallNoScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 5
	const elemsize = 48

	if doubleCheckMalloc {

		doubleCheckSmallNoScan(typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(1)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	if runtimeFreegcEnabled && c.hasReusableNoscan(spc) {

		x = mallocgcSmallNoscanReuse(c, span, spc, elemsize, needzero)
		mp.mallocing = 0
		releasem(mp)

		return x

	}

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if needzero && span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallNoScanSC6(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(6<<1) | spanClass(1)
		const elemsize = uintptr(64)
		return mallocgcSmallNoScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 6
	const elemsize = 64

	if doubleCheckMalloc {

		doubleCheckSmallNoScan(typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(1)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	if runtimeFreegcEnabled && c.hasReusableNoscan(spc) {

		x = mallocgcSmallNoscanReuse(c, span, spc, elemsize, needzero)
		mp.mallocing = 0
		releasem(mp)

		return x

	}

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if needzero && span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcSmallNoScanSC7(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	mp = acquirem()

	forceSlowPath := debug.malloc || gcBlackenEnabled != 0 || (goexperiment.RuntimeSecret && getg().secret > 0)

	if forceSlowPath {
		releasem(mp)

		const spc = spanClass(7<<1) | spanClass(1)
		const elemsize = uintptr(80)
		return mallocgcSmallNoScanSlowPath(size, typ, needzero, spc, elemsize)

	}

	lockRankMayQueueFinalizer()

	const sizeclass = 7
	const elemsize = 80

	if doubleCheckMalloc {

		doubleCheckSmallNoScan(typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)
	const spc = spanClass(sizeclass<<1) | spanClass(1)
	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	if runtimeFreegcEnabled && c.hasReusableNoscan(spc) {

		x = mallocgcSmallNoscanReuse(c, span, spc, elemsize, needzero)
		mp.mallocing = 0
		releasem(mp)

		return x

	}

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if needzero && span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}

	publicationBarrier()

	span.freeIndexForScan = span.freeindex

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

	return x
}

func mallocgcTinySlowPath(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	gp := getg()
	if goexperiment.RuntimeSecret && gp.secret > 0 {
		return mallocgcSmallNoScanSC2(size, typ, needzero)
	}

	lockRankMayQueueFinalizer()

	if debug.malloc {
		if x := preMallocgcDebug(size, typ); x != nil {
			return x
		}
	}

	if gcBlackenEnabled != 0 {

		assistG := getg()
		if assistG.m.curg != nil {
			assistG = assistG.m.curg
		}
		assistG.gcAssistBytes -= int64(size)
		if assistG.gcAssistBytes < 0 {
			gcAssistAlloc(assistG)
		}
	}

	mp = acquirem()

	const elemsize = 16

	if doubleCheckMalloc {
		doubleCheckTiny(size, typ, mp)
	}
	mp.mallocing = 1

	c := getMCache(mp)
	off := c.tinyoffset

	if size&7 == 0 {
		off = alignUp(off, 8)
	} else if goarch.PtrSize == 4 && size == 12 {

		off = alignUp(off, 8)
	} else if size&3 == 0 {
		off = alignUp(off, 4)
	} else if size&1 == 0 {
		off = alignUp(off, 2)
	}
	if off+size <= maxTinySize && c.tiny != 0 {

		x := unsafe.Pointer(c.tiny + off)
		c.tinyoffset = off + size
		c.tinyAllocs++
		mp.mallocing = 0
		releasem(mp)
		const elemsize = 0
		if gcBlackenEnabled != 0 && elemsize != 0 {
			if assistG := getg().m.curg; assistG != nil {
				assistG.gcAssistBytes -= int64(elemsize - size)
			}
		}

		if debug.malloc {
			postMallocgcDebug(x, elemsize, typ)
		}

		return x
	}

	checkGCTrigger := false
	span := c.alloc[tinySpanClass]

	const nbytes = 8192
	const nelems = uint16((nbytes - unsafe.Sizeof(spanInlineMarkBits{})) / 16)
	var nextFreeFastResult gclinkptr
	if span.allocCache != 0 {
		theBit := sys.TrailingZeros64(span.allocCache)
		result := span.freeindex + uint16(theBit)
		if result < nelems {
			freeidx := result + 1
			if !(freeidx%64 == 0 && freeidx != nelems) {
				span.allocCache >>= uint(theBit + 1)
				span.freeindex = freeidx
				span.allocCount++
				nextFreeFastResult = gclinkptr(uintptr(result)*16 + span.base())
			}
		}
	}
	v := nextFreeFastResult
	if v == 0 {
		v, span, checkGCTrigger = c.nextFree(tinySpanClass)
	}
	x := unsafe.Pointer(v)
	(*[2]uint64)(x)[0] = 0
	(*[2]uint64)(x)[1] = 0

	if !raceenabled && (size < c.tinyoffset || c.tiny == 0) {

		c.tiny = uintptr(x)
		c.tinyoffset = size
	}

	publicationBarrier()

	if writeBarrier.enabled {

		gcmarknewobject(span, uintptr(x))
	} else {

		span.freeIndexForScan = span.freeindex
	}

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}
	if gcBlackenEnabled != 0 && elemsize != 0 {
		if assistG := getg().m.curg; assistG != nil {
			assistG.gcAssistBytes -= int64(elemsize - size)
		}
	}

	if debug.malloc {
		postMallocgcDebug(x, elemsize, typ)
	}

	return x
}

func mallocgcSmallScanSlowPath(size uintptr, typ *_type, needzero bool, spc spanClass, elemsize uintptr) unsafe.Pointer {

	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	lockRankMayQueueFinalizer()

	if debug.malloc {
		if x := preMallocgcDebug(size, typ); x != nil {
			return x
		}
	}

	if gcBlackenEnabled != 0 {

		assistG := getg()
		if assistG.m.curg != nil {
			assistG = assistG.m.curg
		}
		assistG.gcAssistBytes -= int64(size)
		if assistG.gcAssistBytes < 0 {
			gcAssistAlloc(assistG)
		}
	}

	mp = acquirem()

	if doubleCheckMalloc {

		doubleCheckSmallScanNoHeader(size, typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)

	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}
	if goarch.PtrSize == 8 && elemsize == 8 {

		c.scanAlloc += 8
	} else {
		dataSize := size
		x := uintptr(x)

		if doubleCheckHeapSetType && (!heapBitsInSpan(dataSize) || !heapBitsInSpan(elemsize_)) {
			throw("tried to write heap bits, but no heap bits in span")
		}

		src0 := readUintptr(getGCMask(typ))

		var scanSize uintptr
		src := src0
		if typ.Size_ == goarch.PtrSize {
			src = (1 << (dataSize / goarch.PtrSize)) - 1

			scanSize = dataSize
		} else {

			if doubleCheckHeapSetType && !asanenabled && dataSize%typ.Size_ != 0 {
				throw("runtime: (*mspan).writeHeapBitsSmall: dataSize is not a multiple of typ.Size_")
			}
			scanSize = typ.PtrBytes
			for i := typ.Size_; i < dataSize; i += typ.Size_ {
				src |= src0 << (i / goarch.PtrSize)
				scanSize += typ.Size_
			}
		}

		dstBase, _ := spanHeapBitsRange(span.base(), pageSize, elemsize)
		dst := unsafe.Pointer(dstBase)
		o := (x - span.base()) / goarch.PtrSize
		i := o / ptrBits
		j := o % ptrBits
		var bits uintptr = elemsize / goarch.PtrSize

		var bitsIsPowerOfTwo = bits&(bits-1) == 0
		if bits > ptrBits || (!bitsIsPowerOfTwo && j+bits > ptrBits) {

			bits0 := ptrBits - j
			bits1 := bits - bits0
			dst0 := (*uintptr)(add(dst, (i+0)*goarch.PtrSize))
			dst1 := (*uintptr)(add(dst, (i+1)*goarch.PtrSize))
			*dst0 = (*dst0)&(^uintptr(0)>>bits0) | (src << j)
			*dst1 = (*dst1)&^((1<<bits1)-1) | (src >> bits0)
		} else {

			dst := (*uintptr)(add(dst, i*goarch.PtrSize))
			*dst = (*dst)&^(((1<<(min(bits, ptrBits)))-1)<<j) | (src << j)
		}

		const doubleCheck = false
		if doubleCheck {
			writeHeapBitsDoubleCheck(span, x, dataSize, src, src0, i, j, bits, typ)
		}
		if doubleCheckHeapSetType {
			doubleCheckHeapType(x, dataSize, typ, nil, span)
		}
		c.scanAlloc += scanSize
	}

	publicationBarrier()

	if writeBarrier.enabled {

		gcmarknewobject(span, uintptr(x))
	} else {

		span.freeIndexForScan = span.freeindex
	}

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}
	gp := getg()
	if goexperiment.RuntimeSecret && gp.secret > 0 {

		addSecret(x, size)
	}

	if gcBlackenEnabled != 0 && elemsize != 0 {
		if assistG := getg().m.curg; assistG != nil {
			assistG.gcAssistBytes -= int64(elemsize - size)
		}
	}

	if debug.malloc {
		postMallocgcDebug(x, elemsize, typ)
	}

	return x
}

func mallocgcSmallNoScanSlowPath(size uintptr, typ *_type, needzero bool, spc spanClass, elemsize uintptr) unsafe.Pointer {

	if doubleCheckMalloc {
		if gcphase == _GCmarktermination {
			throw("mallocgc called with gcphase == _GCmarktermination")
		}
	}

	var mp *m

	lockRankMayQueueFinalizer()

	if debug.malloc {
		if x := preMallocgcDebug(size, typ); x != nil {
			return x
		}
	}

	if gcBlackenEnabled != 0 {

		assistG := getg()
		if assistG.m.curg != nil {
			assistG = assistG.m.curg
		}
		assistG.gcAssistBytes -= int64(size)
		if assistG.gcAssistBytes < 0 {
			gcAssistAlloc(assistG)
		}
	}

	mp = acquirem()

	if doubleCheckMalloc {

		doubleCheckSmallNoScan(typ, mp)

	}
	mp.mallocing = 1

	checkGCTrigger := false
	c := getMCache(mp)

	span := c.alloc[spc]

	var v gclinkptr
	var x unsafe.Pointer

	if runtimeFreegcEnabled && c.hasReusableNoscan(spc) {

		x = mallocgcSmallNoscanReuse(c, span, spc, elemsize, needzero)
		mp.mallocing = 0
		releasem(mp)

		goto post

	}

	{

		var nextFreeFastResult gclinkptr
		if span.allocCache != 0 {
			theBit := sys.TrailingZeros64(span.allocCache)
			result := span.freeindex + uint16(theBit)
			if result < span.nelems {
				freeidx := result + 1
				if !(freeidx%64 == 0 && freeidx != span.nelems) {
					span.allocCache >>= uint(theBit + 1)
					span.freeindex = freeidx
					span.allocCount++
					nextFreeFastResult = gclinkptr(uintptr(result)*elemsize + span.base())
				}
			}
		}
		v = nextFreeFastResult
		if v == 0 {
			v, span, checkGCTrigger = c.nextFree(spc)
		}
		x = unsafe.Pointer(v)
	}

	if needzero && span.needzero != 0 {
		memclrNoHeapPointers(x, elemsize)
	}

	publicationBarrier()

	if writeBarrier.enabled {

		gcmarknewobject(span, uintptr(x))
	} else {

		span.freeIndexForScan = span.freeindex
	}

	c.nextSample -= int64(elemsize)
	if c.nextSample < 0 || MemProfileRate != c.memProfRate {
		profilealloc(mp, x, elemsize)
	}
	mp.mallocing = 0
	releasem(mp)

	if checkGCTrigger {
		if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
			gcStart(t)
		}
	}

post:
	gp := getg()
	if goexperiment.RuntimeSecret && gp.secret > 0 {

		addSecret(x, size)
	}

	if gcBlackenEnabled != 0 && elemsize != 0 {
		if assistG := getg().m.curg; assistG != nil {
			assistG.gcAssistBytes -= int64(elemsize - size)
		}
	}

	if debug.malloc {
		postMallocgcDebug(x, elemsize, typ)
	}

	return x
}

The pages are generated with Golds v0.8.4. (GOOS=linux GOARCH=amd64)