1 // AR 0 to AR 47 can be accessed only by M unit.
51 // AR 48 to 63 can be accessed by I or M units.
53 // AR 64 to AR 111 can be accessed only by I unit.
103 // AR 112 to 127 can be accessed by I or M units.
105 // AR K0 to AR ITC can be accessed only by M unit.
116 mov.i r1 = ar.bspstore
131 // AR PFS, LC and EC can be accessed only by I unit.