go122.EvGoSwitch:        (*ordering).advanceGoSwitch,
	go122.EvGoSwitchDestroy: (*ordering).advanceGoSwitch,
	go122.EvGoCreateBlocked: (*ordering).advanceGoCreate,

	// GoStatus event with a stack. Added in Go 1.23.
	go122.EvGoStatusStack: (*ordering).advanceGoStatus,

	// Experimental events.

	// Experimental heap span events. Added in Go 1.23.
	go122.EvSpan:      (*ordering).advanceAllocFree,

	-mutexprofile mutex.out
	    Write a mutex contention profile to the specified file
	    when all tests are complete.
	    Writes test binary as -c would.

	-mutexprofilefraction n
	    Sample 1 in n stack traces of goroutines holding a
	    contended mutex.

	-outputdir directory
	    Place output files from profiling in the specified directory,
	    by default the directory in which "go test" is running.

		p := s.Prog(storeOp)
		p.From.Type = obj.TYPE_REG
		p.From.Reg = v.Args[0].Reg()
		ssagen.AddrAuto(&p.To, v)

	case ssa.OpArgIntReg, ssa.OpArgFloatReg:
		// The assembler needs to wrap the entry safepoint/stack growth code with spill/unspill
		// The loop only runs once.
		for _, a := range v.Block.Func.RegArgs {
			// Pass the spill/unspill information along to the assembler, offset by size of
			// the saved LR slot.

	// (They may be actively dialing, but this conn is ready first.
	// Chrome calls this socket late binding.
	// See https://www.chromium.org/developers/design-documents/network-stack#TOC-Connection-Management.)
	key := pconn.cacheKey
	if q, ok := t.idleConnWait[key]; ok {
		done := false
		if pconn.alt == nil {
			// HTTP/1.

			// anyone allocate one on the Go side. As a side effect of this annotation,
			// pointers to this type will not be considered pointers in Go. They won't
			// get writebarrier-ed or adjusted during a stack copy. This should handle
			// all the cases badPointerTypedef used to handle, but hopefully will
			// continue to work going forward without any more need for cgo changes.
			tt.Go = c.Ident(incomplete)

		// on another stack. That could confuse callers quite a bit.
		// Instead, we require that initAt and any other function that
		// accepts an sp for the current goroutine (typically obtained by
		// calling getcallersp) must not run on that goroutine's stack but
		// instead on the g0 stack.
		throw("cannot trace user goroutine on its own stack")
	}

					stk = s
					break
				}
			}
			if len(stk) != depth {
				t.Fatalf("want stack depth = %d, got %d", depth, len(stk))
			}

			if rootFn, wantFn := stk[depth-1], "runtime/pprof.produceProfileEvents"; rootFn != wantFn {
				t.Fatalf("want stack stack root %s, got %v", wantFn, rootFn)
			}
		})
	}
}

func hasPrefix(stk []string, prefix []string) bool {

		if ctxt.IsMIPS() {
			shstrtabAddstring(elfRelType + ".MIPS.abiflags")
			shstrtabAddstring(elfRelType + ".gnu.attributes")
		}

		// add a .note.GNU-stack section to mark the stack as non-executable
		shstrtabAddstring(".note.GNU-stack")

		if ctxt.IsShared() {
			shstrtabAddstring(".note.go.abihash")
			shstrtabAddstring(".note.go.pkg-list")
			shstrtabAddstring(".note.go.deps")
		}
	}

// whether the span has been zeroed. Note that it may not be.
func (h *mheap) alloc(npages uintptr, spanclass spanClass) *mspan {
	// Don't do any operations that lock the heap on the G stack.
	// It might trigger stack growth, and the stack growth code needs
	// to be able to allocate heap.
	var s *mspan
	systemstack(func() {
		// To prevent excessive heap growth, before allocating n pages

		// Do not include local development, so that people working in the
		// main branch for day-to-day work on the Go toolchain itself can
		// still have full paths for stack traces for compiler crashes and the like.
		env = append(env, "GOFLAGS=-trimpath -ldflags=-w -gcflags=cmd/...=-dwarf=false")
	}
	return env
}