//	    ... more arg regs ..
//	    v4 = ArgFloatReg <float32> {f1+0} [0] : X0
//	    v52 = MOVQstore <mem> {p1} v2 v3 v1
//	    ... more stores ...
//	    v68 = MOVSSstore <mem> {f4} v2 v67 v66
//	    v38 = MOVQstoreconst <mem> {blob} [val=0,off=0] v2 v32
//
// Important: locatePrologEnd is expected to work properly only with
// optimization turned off (e.g. "-N"). If optimization is enabled