Keith Randall <******@****.***> 1692387877 -0700

// escape analysis decisions about the pointer value being stored.

// atomicwb performs a write barrier before an atomic pointer write.
// The caller should guard the call with "if writeBarrier.enabled".
//
// atomicwb should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/bytedance/gopkg

	TypeAssert        *obj.LSym
	WBZero            *obj.LSym
	WBMove            *obj.LSym
	// Wasm
	SigPanic        *obj.LSym
	Staticuint64s   *obj.LSym
	Typedmemmove    *obj.LSym
	Udiv            *obj.LSym
	WriteBarrier    *obj.LSym
	Zerobase        *obj.LSym
	ARM64HasATOMICS *obj.LSym
	ARMHasVFPv4     *obj.LSym
	X86HasFMA       *obj.LSym
	X86HasPOPCNT    *obj.LSym
	X86HasSSE41     *obj.LSym
	// Wasm
	WasmDiv *obj.LSym

	{"runtime.makechan", 1},
	{"runtime.chanrecv1", 1},
	{"runtime.chanrecv2", 1},
	{"runtime.chansend1", 1},
	{"runtime.closechan", 1},
	{"runtime.chanlen", 1},
	{"runtime.chancap", 1},
	{"runtime.writeBarrier", 0},
	{"runtime.typedmemmove", 1},
	{"runtime.typedmemclr", 1},
	{"runtime.typedslicecopy", 1},
	{"runtime.selectnbsend", 1},
	{"runtime.selectnbrecv", 1},
	{"runtime.selectsetpc", 1},

		}

		// Detect whether we're in the write barrier.
		switch runtime.GOARCH {
		case "arm64":
			if parts[3] == "MOVWU" {
				// The unpreemptible region starts after the
				// load of runtime.writeBarrier.
				startedWB = true
			}
			if parts[3] == "MOVD" && parts[4] == "ZR," {
				// The unpreemptible region ends after the
				// write of nil.
				doneWB = true
			}
		case "amd64":