t.Skip("skipping for non-gc toolchain")
	}
	if runtime.GOARCH != "amd64" {
		// TODO: support SEH on other architectures.
		t.Skip("skipping on non-amd64")
	}
	// Only frames in the test package are checked.
	want := []string{
		"test._Cfunc_backtrace",
		"test.testCallbackCallersSEH.func1.1",
		"test.testCallbackCallersSEH.func1",
		"test.goCallback",
		"test._Cfunc_callback",

const clearLoopCutoff = 1024

// zerorange clears the stack in the given range.
func zerorange(pp *objw.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
	if cnt == 0 {
		return p
	}

	// Adjust the frame to account for LR.
	off += base.Ctxt.Arch.FixedFrameSize
	reg := int16(s390x.REGSP)

	// If the off cannot fit in a 12-bit unsigned displacement then we
	// need to create a copy of the stack pointer that we can adjust.

	"cmd/compile/internal/types"
	"cmd/internal/obj"
	"cmd/internal/obj/riscv"
)

func zeroRange(pp *objw.Progs, p *obj.Prog, off, cnt int64, _ *uint32) *obj.Prog {
	if cnt == 0 {
		return p
	}

	// Adjust the frame to account for LR.
	off += base.Ctxt.Arch.FixedFrameSize

	if cnt < int64(4*types.PtrSize) {
		for i := int64(0); i < cnt; i += int64(types.PtrSize) {

The maximum stack depth for alloc, mutex, block, threadcreate and goroutine

In Go 1.23, overhead should be in the single digit percentages.

<!-- https://go.dev/issue/62737 , https://golang.org/cl/576681,  https://golang.org/cl/577615 -->
The compiler in Go 1.23 can now overlap the stack frame slots of local variables
accessed in disjoint regions of a function, which reduces stack usage
for Go applications.

<!-- https://go.dev/cl/577935 -->

pkg p1, type I interface, Name() string
pkg p1, type I interface, PackageTwoMeth()
pkg p1, type I interface, Set(string, int64)
pkg p1, type I interface, unexported methods
pkg p1, type MyInt int
pkg p1, type Namer interface { Name }
pkg p1, type Namer interface, Name() string
pkg p1, type Private interface, X()
pkg p1, type Private interface, unexported methods
pkg p1, type Private //deprecated
pkg p1, type Public interface { X, Y }

}

// GCNum returns the runtime GC register index of r, or -1 if this
// register can't contain pointers.
func (r *Register) GCNum() int16 {
	return r.gcNum
}

// A LocalSlot is a location in the stack frame, which identifies and stores
// part or all of a PPARAM, PPARAMOUT, or PAUTO ONAME node.
// It can represent a whole variable, part of a larger stack slot, or part of a
// variable that has been decomposed into multiple stack slots.

	addi	1,1,32
	ld 	0,16(1)
	mtlr	0
	blr

// An ELFv2 st_other==0 function. It preserves R2 (TOC), but does not use it.
	.globl	notoc_func
	.type	notoc_func, @function
notoc_func:
	// Save R2 and LR and stack a frame.
	mflr	0
	std	0,16(1)
	stdu	1,-32(1)

	// Save R2 in TOC save slot.
	std	2,24(1)

	// clobber R2
	li	2,0

	// Call type2_func. A call stub from notoc to toc should be inserted.
	bl	toc_func@notoc