// that way following Golang HTTP response behavior.
		lrw.WriteHeader(http.StatusOK)
	}
	n, err := lrw.ResponseWriter.Write(p)
	lrw.bytesWritten += n
	if lrw.TimeToFirstByte == 0 {
		lrw.TimeToFirstByte = time.Now().UTC().Sub(lrw.StartTime)
	}
	gzipped := lrw.Header().Get("Content-Encoding") == "gzip"
	if !gzipped && ((lrw.LogErrBody && lrw.StatusCode >= http.StatusBadRequest) || lrw.LogAllBody) {
		// Always logging error responses.

	"SUBW",
	"SRAW",
	"LD",
	"SD",
	"MUL",
	"MULH",
	"MULHU",
	"MULHSU",
	"MULW",
	"DIV",
	"DIVU",
	"REM",
	"REMU",
	"DIVW",
	"DIVUW",
	"REMW",
	"REMUW",
	"LRD",
	"SCD",
	"LRW",
	"SCW",
	"AMOSWAPD",
	"AMOADDD",
	"AMOANDD",
	"AMOORD",
	"AMOXORD",
	"AMOMAXD",
	"AMOMAXUD",
	"AMOMIND",
	"AMOMINUD",
	"AMOSWAPW",
	"AMOADDW",
	"AMOANDW",
	"AMOORW",
	"AMOXORW",

//              *val = new;
//              return 1;
//      } else {
//              return 0;
//      }
TEXT ·Cas(SB), NOSPLIT, $0-17
	MOV	ptr+0(FP), A0
	MOVW	old+8(FP), A1
	MOVW	new+12(FP), A2
cas_again:
	LRW	(A0), A3
	BNE	A3, A1, cas_fail
	SCW	A2, (A0), A4
	BNE	A4, ZERO, cas_again
	MOV	$1, A0
	MOVB	A0, ret+16(FP)
	RET
cas_fail:
	MOV	$0, A0
	MOV	A0, ret+16(FP)
	RET

	REMU	X5, X6, X7				// b3735302
	DIVW	X5, X6, X7				// bb435302
	DIVUW	X5, X6, X7				// bb535302
	REMW	X5, X6, X7				// bb635302
	REMUW	X5, X6, X7				// bb735302

	// 8.2: Load-Reserved/Store-Conditional
	LRW	(X5), X6				// 2fa30214
	LRD	(X5), X6				// 2fb30214
	SCW	X5, (X6), X7				// af23531a
	SCD	X5, (X6), X7				// af33531a

	// 8.3: Atomic Memory Operations
	AMOSWAPW	X5, (X6), X7			// af23530e