diff --git a/src/cmd/compile/internal/gc/op_string.go b/src/cmd/compile/internal/gc/op_string.go
index f7d31f912c..16fd79e477 100644
--- a/src/cmd/compile/internal/gc/op_string.go
+++ b/src/cmd/compile/internal/gc/op_string.go
@@ -121,52 +121,53 @@ func _() {
 	_ = x[OALIGNOF-110]
 	_ = x[OOFFSETOF-111]
 	_ = x[OSIZEOF-112]
-	_ = x[OBLOCK-113]
-	_ = x[OBREAK-114]
-	_ = x[OCASE-115]
-	_ = x[OCONTINUE-116]
-	_ = x[ODEFER-117]
-	_ = x[OEMPTY-118]
-	_ = x[OFALL-119]
-	_ = x[OFOR-120]
-	_ = x[OFORUNTIL-121]
-	_ = x[OGOTO-122]
-	_ = x[OIF-123]
-	_ = x[OLABEL-124]
-	_ = x[OGO-125]
-	_ = x[ORANGE-126]
-	_ = x[ORETURN-127]
-	_ = x[OSELECT-128]
-	_ = x[OSWITCH-129]
-	_ = x[OTYPESW-130]
-	_ = x[OTCHAN-131]
-	_ = x[OTMAP-132]
-	_ = x[OTSTRUCT-133]
-	_ = x[OTINTER-134]
-	_ = x[OTFUNC-135]
-	_ = x[OTARRAY-136]
-	_ = x[ODDD-137]
-	_ = x[OINLCALL-138]
-	_ = x[OEFACE-139]
-	_ = x[OITAB-140]
-	_ = x[OIDATA-141]
-	_ = x[OSPTR-142]
-	_ = x[OCLOSUREVAR-143]
-	_ = x[OCFUNC-144]
-	_ = x[OCHECKNIL-145]
-	_ = x[OVARDEF-146]
-	_ = x[OVARKILL-147]
-	_ = x[OVARLIVE-148]
-	_ = x[ORESULT-149]
-	_ = x[OINLMARK-150]
-	_ = x[ORETJMP-151]
-	_ = x[OGETG-152]
-	_ = x[OEND-153]
+	_ = x[OMETHEXPR-113]
+	_ = x[OBLOCK-114]
+	_ = x[OBREAK-115]
+	_ = x[OCASE-116]
+	_ = x[OCONTINUE-117]
+	_ = x[ODEFER-118]
+	_ = x[OEMPTY-119]
+	_ = x[OFALL-120]
+	_ = x[OFOR-121]
+	_ = x[OFORUNTIL-122]
+	_ = x[OGOTO-123]
+	_ = x[OIF-124]
+	_ = x[OLABEL-125]
+	_ = x[OGO-126]
+	_ = x[ORANGE-127]
+	_ = x[ORETURN-128]
+	_ = x[OSELECT-129]
+	_ = x[OSWITCH-130]
+	_ = x[OTYPESW-131]
+	_ = x[OTCHAN-132]
+	_ = x[OTMAP-133]
+	_ = x[OTSTRUCT-134]
+	_ = x[OTINTER-135]
+	_ = x[OTFUNC-136]
+	_ = x[OTARRAY-137]
+	_ = x[ODDD-138]
+	_ = x[OINLCALL-139]
+	_ = x[OEFACE-140]
+	_ = x[OITAB-141]
+	_ = x[OIDATA-142]
+	_ = x[OSPTR-143]
+	_ = x[OCLOSUREVAR-144]
+	_ = x[OCFUNC-145]
+	_ = x[OCHECKNIL-146]
+	_ = x[OVARDEF-147]
+	_ = x[OVARKILL-148]
+	_ = x[OVARLIVE-149]
+	_ = x[ORESULT-150]
+	_ = x[OINLMARK-151]
+	_ = x[ORETJMP-152]
+	_ = x[OGETG-153]
+	_ = x[OEND-154]
 }
 
-const _Op_name = "XXXNAMENONAMETYPEPACKLITERALNILADDSUBORXORADDSTRADDRANDANDAPPENDBYTES2STRBYTES2STRTMPRUNES2STRSTR2BYTESSTR2BYTESTMPSTR2RUNESASAS2AS2DOTTYPEAS2FUNCAS2MAPRAS2RECVASOPCALLCALLFUNCCALLMETHCALLINTERCALLPARTCAPCLOSECLOSURECOMPLITMAPLITSTRUCTLITARRAYLITSLICELITPTRLITCONVCONVIFACECONVNOPCOPYDCLDCLFUNCDCLFIELDDCLCONSTDCLTYPEDELETEDOTDOTPTRDOTMETHDOTINTERXDOTDOTTYPEDOTTYPE2EQNELTLEGEGTDEREFINDEXINDEXMAPKEYSTRUCTKEYLENMAKEMAKECHANMAKEMAPMAKESLICEMAKESLICECOPYMULDIVMODLSHRSHANDANDNOTNEWNEWOBJNOTBITNOTPLUSNEGORORPANICPRINTPRINTNPARENSENDSLICESLICEARRSLICESTRSLICE3SLICE3ARRSLICEHEADERRECOVERRECVRUNESTRSELRECVSELRECV2IOTAREALIMAGCOMPLEXALIGNOFOFFSETOFSIZEOFBLOCKBREAKCASECONTINUEDEFEREMPTYFALLFORFORUNTILGOTOIFLABELGORANGERETURNSELECTSWITCHTYPESWTCHANTMAPTSTRUCTTINTERTFUNCTARRAYDDDINLCALLEFACEITABIDATASPTRCLOSUREVARCFUNCCHECKNILVARDEFVARKILLVARLIVERESULTINLMARKRETJMPGETGEND"
+const _Op_name = "XXXNAMENONAMETYPEPACKLITERALNILADDSUBORXORADDSTRADDRANDANDAPPENDBYTES2STRBYTES2STRTMPRUNES2STRSTR2BYTESSTR2BYTESTMPSTR2RUNESASAS2AS2DOTTYPEAS2FUNCAS2MAPRAS2RECVASOPCALLCALLFUNCCALLMETHCALLINTERCALLPARTCAPCLOSECLOSURECOMPLITMAPLITSTRUCTLITARRAYLITSLICELITPTRLITCONVCONVIFACECONVNOPCOPYDCLDCLFUNCDCLFIELDDCLCONSTDCLTYPEDELETEDOTDOTPTRDOTMETHDOTINTERXDOTDOTTYPEDOTTYPE2EQNELTLEGEGTDEREFINDEXINDEXMAPKEYSTRUCTKEYLENMAKEMAKECHANMAKEMAPMAKESLICEMAKESLICECOPYMULDIVMODLSHRSHANDANDNOTNEWNEWOBJNOTBITNOTPLUSNEGORORPANICPRINTPRINTNPARENSENDSLICESLICEARRSLICESTRSLICE3SLICE3ARRSLICEHEADERRECOVERRECVRUNESTRSELRECVSELRECV2IOTAREALIMAGCOMPLEXALIGNOFOFFSETOFSIZEOFMETHEXPRBLOCKBREAKCASECONTINUEDEFEREMPTYFALLFORFORUNTILGOTOIFLABELGORANGERETURNSELECTSWITCHTYPESWTCHANTMAPTSTRUCTTINTERTFUNCTARRAYDDDINLCALLEFACEITABIDATASPTRCLOSUREVARCFUNCCHECKNILVARDEFVARKILLVARLIVERESULTINLMARKRETJMPGETGEND"
 
-var _Op_index = [...]uint16{0, 3, 7, 13, 17, 21, 28, 31, 34, 37, 39, 42, 48, 52, 58, 64, 73, 85, 94, 103, 115, 124, 126, 129, 139, 146, 153, 160, 164, 168, 176, 184, 193, 201, 204, 209, 216, 223, 229, 238, 246, 254, 260, 264, 273, 280, 284, 287, 294, 302, 310, 317, 323, 326, 332, 339, 347, 351, 358, 366, 368, 370, 372, 374, 376, 378, 383, 388, 396, 399, 408, 411, 415, 423, 430, 439, 452, 455, 458, 461, 464, 467, 470, 476, 479, 485, 488, 494, 498, 501, 505, 510, 515, 521, 526, 530, 535, 543, 551, 557, 566, 577, 584, 588, 595, 602, 610, 614, 618, 622, 629, 636, 644, 650, 655, 660, 664, 672, 677, 682, 686, 689, 697, 701, 703, 708, 710, 715, 721, 727, 733, 739, 744, 748, 755, 761, 766, 772, 775, 782, 787, 791, 796, 800, 810, 815, 823, 829, 836, 843, 849, 856, 862, 866, 869}
+var _Op_index = [...]uint16{0, 3, 7, 13, 17, 21, 28, 31, 34, 37, 39, 42, 48, 52, 58, 64, 73, 85, 94, 103, 115, 124, 126, 129, 139, 146, 153, 160, 164, 168, 176, 184, 193, 201, 204, 209, 216, 223, 229, 238, 246, 254, 260, 264, 273, 280, 284, 287, 294, 302, 310, 317, 323, 326, 332, 339, 347, 351, 358, 366, 368, 370, 372, 374, 376, 378, 383, 388, 396, 399, 408, 411, 415, 423, 430, 439, 452, 455, 458, 461, 464, 467, 470, 476, 479, 485, 488, 494, 498, 501, 505, 510, 515, 521, 526, 530, 535, 543, 551, 557, 566, 577, 584, 588, 595, 602, 610, 614, 618, 622, 629, 636, 644, 650, 658, 663, 668, 672, 680, 685, 690, 694, 697, 705, 709, 711, 716, 718, 723, 729, 735, 741, 747, 752, 756, 763, 769, 774, 780, 783, 790, 795, 799, 804, 808, 818, 823, 831, 837, 844, 851, 857, 864, 870, 874, 877}
 
 func (i Op) String() string {
 	if i >= Op(len(_Op_index)-1) {
diff --git a/src/cmd/compile/internal/gc/syntax.go b/src/cmd/compile/internal/gc/syntax.go
index 435fd78fce..343d5b171c 100644
--- a/src/cmd/compile/internal/gc/syntax.go
+++ b/src/cmd/compile/internal/gc/syntax.go
@@ -891,6 +891,7 @@ const (
 	OALIGNOF     // unsafe.Alignof(Left)
 	OOFFSETOF    // unsafe.Offsetof(Left)
 	OSIZEOF      // unsafe.Sizeof(Left)
+	OMETHEXPR    // method expression
 
 	// statements
 	OBLOCK // { List } (block of code)