diff --git a/src/cmd/asm/internal/arch/arch.go b/src/cmd/asm/internal/arch/arch.go
index 6159ede6c5..bd9658301c 100644
--- a/src/cmd/asm/internal/arch/arch.go
+++ b/src/cmd/asm/internal/arch/arch.go
@@ -10,6 +10,7 @@ import (
 	"cmd/internal/obj/arm64"
 	"cmd/internal/obj/mips"
 	"cmd/internal/obj/ppc64"
+	"cmd/internal/obj/s390x"
 	"cmd/internal/obj/x86"
 	"fmt"
 	"strings"
@@ -74,6 +75,10 @@ func Set(GOARCH string) *Arch {
 		a := archPPC64()
 		a.LinkArch = &ppc64.Linkppc64le
 		return a
+	case "s390x":
+		a := archS390x()
+		a.LinkArch = &s390x.Links390x
+		return a
 	}
 	return nil
 }
@@ -416,3 +421,56 @@ func archMips64() *Arch {
 		IsJump:         jumpMIPS64,
 	}
 }
+
+func archS390x() *Arch {
+	register := make(map[string]int16)
+	// Create maps for easy lookup of instruction names etc.
+	// Note that there is no list of names as there is for x86.
+	for i := s390x.REG_R0; i <= s390x.REG_R15; i++ {
+		register[obj.Rconv(i)] = int16(i)
+	}
+	for i := s390x.REG_F0; i <= s390x.REG_F15; i++ {
+		register[obj.Rconv(i)] = int16(i)
+	}
+	for i := s390x.REG_V0; i <= s390x.REG_V31; i++ {
+		register[obj.Rconv(i)] = int16(i)
+	}
+	for i := s390x.REG_AR0; i <= s390x.REG_AR15; i++ {
+		register[obj.Rconv(i)] = int16(i)
+	}
+	register["LR"] = s390x.REG_LR
+	// Pseudo-registers.
+	register["SB"] = RSB
+	register["FP"] = RFP
+	register["PC"] = RPC
+	// Avoid unintentionally clobbering g using R13.
+	delete(register, "R13")
+	register["g"] = s390x.REG_R13
+	registerPrefix := map[string]bool{
+		"AR": true,
+		"F":  true,
+		"R":  true,
+	}
+
+	instructions := make(map[string]obj.As)
+	for i, s := range obj.Anames {
+		instructions[s] = obj.As(i)
+	}
+	for i, s := range s390x.Anames {
+		if obj.As(i) >= obj.A_ARCHSPECIFIC {
+			instructions[s] = obj.As(i) + obj.ABaseS390X
+		}
+	}
+	// Annoying aliases.
+	instructions["BR"] = s390x.ABR
+	instructions["BL"] = s390x.ABL
+
+	return &Arch{
+		LinkArch:       &s390x.Links390x,
+		Instructions:   instructions,
+		Register:       register,
+		RegisterPrefix: registerPrefix,
+		RegisterNumber: s390xRegisterNumber,
+		IsJump:         jumpS390x,
+	}
+}
diff --git a/src/cmd/asm/internal/arch/s390x.go b/src/cmd/asm/internal/arch/s390x.go
new file mode 100644
index 0000000000..6fa0292759
--- /dev/null
+++ b/src/cmd/asm/internal/arch/s390x.go
@@ -0,0 +1,139 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file encapsulates some of the odd characteristics of the
+// s390x instruction set, to minimize its interaction
+// with the core of the assembler.
+
+package arch
+
+import (
+	"cmd/internal/obj"
+	"cmd/internal/obj/s390x"
+)
+
+func jumpS390x(word string) bool {
+	switch word {
+	case "BC",
+		"BCL",
+		"BEQ",
+		"BGE",
+		"BGT",
+		"BL",
+		"BLE",
+		"BLT",
+		"BNE",
+		"BR",
+		"BVC",
+		"BVS",
+		"CMPBEQ",
+		"CMPBGE",
+		"CMPBGT",
+		"CMPBLE",
+		"CMPBLT",
+		"CMPBNE",
+		"CMPUBEQ",
+		"CMPUBGE",
+		"CMPUBGT",
+		"CMPUBLE",
+		"CMPUBLT",
+		"CMPUBNE",
+		"CALL",
+		"JMP":
+		return true
+	}
+	return false
+}
+
+// IsS390xRLD reports whether the op (as defined by an s390x.A* constant) is
+// one of the RLD-like instructions that require special handling.
+// The FMADD-like instructions behave similarly.
+func IsS390xRLD(op obj.As) bool {
+	switch op {
+	case s390x.AFMADD,
+		s390x.AFMADDS,
+		s390x.AFMSUB,
+		s390x.AFMSUBS,
+		s390x.AFNMADD,
+		s390x.AFNMADDS,
+		s390x.AFNMSUB,
+		s390x.AFNMSUBS:
+		return true
+	}
+	return false
+}
+
+// IsS390xCMP reports whether the op (as defined by an s390x.A* constant) is
+// one of the CMP instructions that require special handling.
+func IsS390xCMP(op obj.As) bool {
+	switch op {
+	case s390x.ACMP, s390x.ACMPU, s390x.ACMPW, s390x.ACMPWU:
+		return true
+	}
+	return false
+}
+
+// IsS390xNEG reports whether the op (as defined by an s390x.A* constant) is
+// one of the NEG-like instructions that require special handling.
+func IsS390xNEG(op obj.As) bool {
+	switch op {
+	case s390x.AADDME,
+		s390x.AADDZE,
+		s390x.ANEG,
+		s390x.ASUBME,
+		s390x.ASUBZE:
+		return true
+	}
+	return false
+}
+
+// IsS390xWithLength reports whether the op (as defined by an s390x.A* constant)
+// refers to an instruction which takes a length as its first argument.
+func IsS390xWithLength(op obj.As) bool {
+	switch op {
+	case s390x.AMVC, s390x.ACLC, s390x.AXC, s390x.AOC, s390x.ANC:
+		return true
+	case s390x.AVLL, s390x.AVSTL:
+		return true
+	}
+	return false
+}
+
+// IsS390xWithIndex reports whether the op (as defined by an s390x.A* constant)
+// refers to an instruction which takes an index as its first argument.
+func IsS390xWithIndex(op obj.As) bool {
+	switch op {
+	case s390x.AVSCEG, s390x.AVSCEF, s390x.AVGEG, s390x.AVGEF:
+		return true
+	case s390x.AVGMG, s390x.AVGMF, s390x.AVGMH, s390x.AVGMB:
+		return true
+	case s390x.AVLEIG, s390x.AVLEIF, s390x.AVLEIH, s390x.AVLEIB:
+		return true
+	case s390x.AVPDI:
+		return true
+	}
+	return false
+}
+
+func s390xRegisterNumber(name string, n int16) (int16, bool) {
+	switch name {
+	case "AR":
+		if 0 <= n && n <= 15 {
+			return s390x.REG_AR0 + n, true
+		}
+	case "F":
+		if 0 <= n && n <= 15 {
+			return s390x.REG_F0 + n, true
+		}
+	case "R":
+		if 0 <= n && n <= 15 {
+			return s390x.REG_R0 + n, true
+		}
+	case "V":
+		if 0 <= n && n <= 31 {
+			return s390x.REG_V0 + n, true
+		}
+	}
+	return 0, false
+}
diff --git a/src/cmd/asm/internal/asm/asm.go b/src/cmd/asm/internal/asm/asm.go
index 0c52c904f5..950fd735c9 100644
--- a/src/cmd/asm/internal/asm/asm.go
+++ b/src/cmd/asm/internal/asm/asm.go
@@ -386,6 +386,20 @@ func (p *Parser) asmJump(op obj.As, cond string, a []obj.Addr) {
 			prog.Reg = p.getRegister(prog, op, &a[1])
 			break
 		}
+		if p.arch.Thechar == 'z' {
+			// 3-operand jumps.
+			target = &a[2]
+			prog.From = a[0]
+			if a[1].Reg != 0 {
+				// Compare two registers and jump.
+				prog.Reg = p.getRegister(prog, op, &a[1])
+			} else {
+				// Compare register with immediate and jump.
+				prog.From3 = newAddr(a[1])
+			}
+			break
+		}
+
 		fallthrough
 	default:
 		p.errorf("wrong number of arguments to %s instruction", obj.Aconv(op))
@@ -598,6 +612,15 @@ func (p *Parser) asmInstruction(op obj.As, cond string, a []obj.Addr) {
 				p.errorf("invalid addressing modes for %s instruction", obj.Aconv(op))
 				return
 			}
+		case 'z':
+			if arch.IsS390xWithLength(op) || arch.IsS390xWithIndex(op) {
+				prog.From = a[1]
+				prog.From3 = newAddr(a[0])
+			} else {
+				prog.Reg = p.getRegister(prog, op, &a[1])
+				prog.From = a[0]
+			}
+			prog.To = a[2]
 		default:
 			p.errorf("TODO: implement three-operand instructions for this architecture")
 			return
@@ -633,6 +656,13 @@ func (p *Parser) asmInstruction(op obj.As, cond string, a []obj.Addr) {
 			prog.To = a[3]
 			break
 		}
+		if p.arch.Thechar == 'z' {
+			prog.From = a[1]
+			prog.Reg = p.getRegister(prog, op, &a[2])
+			prog.From3 = newAddr(a[0])
+			prog.To = a[3]
+			break
+		}
 		p.errorf("can't handle %s instruction with 4 operands", obj.Aconv(op))
 		return
 	case 5:
diff --git a/src/cmd/asm/internal/asm/endtoend_test.go b/src/cmd/asm/internal/asm/endtoend_test.go
index 4a3e0ee265..1307c4243f 100644
--- a/src/cmd/asm/internal/asm/endtoend_test.go
+++ b/src/cmd/asm/internal/asm/endtoend_test.go
@@ -389,3 +389,7 @@ func TestMIPS64EndToEnd(t *testing.T) {
 func TestPPC64EndToEnd(t *testing.T) {
 	testEndToEnd(t, "ppc64", "ppc64")
 }
+
+func TestS390XEndToEnd(t *testing.T) {
+	testEndToEnd(t, "s390x", "s390x")
+}
diff --git a/src/cmd/asm/internal/asm/operand_test.go b/src/cmd/asm/internal/asm/operand_test.go
index bc6a495c98..066d55a394 100644
--- a/src/cmd/asm/internal/asm/operand_test.go
+++ b/src/cmd/asm/internal/asm/operand_test.go
@@ -70,6 +70,11 @@ func TestMIPS64OperandParser(t *testing.T) {
 	testOperandParser(t, parser, mips64OperandTests)
 }
 
+func TestS390XOperandParser(t *testing.T) {
+	parser := newParser("s390x")
+	testOperandParser(t, parser, s390xOperandTests)
+}
+
 type operandTest struct {
 	input, output string
 }
@@ -526,3 +531,101 @@ var mips64OperandTests = []operandTest{
 	{"·trunc(SB)", "\"\".trunc(SB)"},
 	{"[):[o-FP", ""}, // Issue 12469 - asm hung parsing the o-FP range on non ARM platforms.
 }
+
+var s390xOperandTests = []operandTest{
+	{"$((1<<63)-1)", "$9223372036854775807"},
+	{"$(-64*1024)", "$-65536"},
+	{"$(1024 * 8)", "$8192"},
+	{"$-1", "$-1"},
+	{"$-24(R4)", "$-24(R4)"},
+	{"$0", "$0"},
+	{"$0(R1)", "$(R1)"},
+	{"$0.5", "$(0.5)"},
+	{"$0x7000", "$28672"},
+	{"$0x88888eef", "$2290650863"},
+	{"$1", "$1"},
+	{"$_main<>(SB)", "$_main<>(SB)"},
+	{"$argframe(FP)", "$argframe(FP)"},
+	{"$~3", "$-4"},
+	{"(-288-3*8)(R1)", "-312(R1)"},
+	{"(16)(R7)", "16(R7)"},
+	{"(8)(g)", "8(g)"},
+	{"(R0)", "(R0)"},
+	{"(R3)", "(R3)"},
+	{"(R4)", "(R4)"},
+	{"(R5)", "(R5)"},
+	{"-1(R4)", "-1(R4)"},
+	{"-1(R5)", "-1(R5)"},
+	{"6(PC)", "6(PC)"},
+	{"R0", "R0"},
+	{"R1", "R1"},
+	{"R2", "R2"},
+	{"R3", "R3"},
+	{"R4", "R4"},
+	{"R5", "R5"},
+	{"R6", "R6"},
+	{"R7", "R7"},
+	{"R8", "R8"},
+	{"R9", "R9"},
+	{"R10", "R10"},
+	{"R11", "R11"},
+	{"R12", "R12"},
+	// {"R13", "R13"}, R13 is g
+	{"R14", "R14"},
+	{"R15", "R15"},
+	{"F0", "F0"},
+	{"F1", "F1"},
+	{"F2", "F2"},
+	{"F3", "F3"},
+	{"F4", "F4"},
+	{"F5", "F5"},
+	{"F6", "F6"},
+	{"F7", "F7"},
+	{"F8", "F8"},
+	{"F9", "F9"},
+	{"F10", "F10"},
+	{"F11", "F11"},
+	{"F12", "F12"},
+	{"F13", "F13"},
+	{"F14", "F14"},
+	{"F15", "F15"},
+	{"V0", "V0"},
+	{"V1", "V1"},
+	{"V2", "V2"},
+	{"V3", "V3"},
+	{"V4", "V4"},
+	{"V5", "V5"},
+	{"V6", "V6"},
+	{"V7", "V7"},
+	{"V8", "V8"},
+	{"V9", "V9"},
+	{"V10", "V10"},
+	{"V11", "V11"},
+	{"V12", "V12"},
+	{"V13", "V13"},
+	{"V14", "V14"},
+	{"V15", "V15"},
+	{"V16", "V16"},
+	{"V17", "V17"},
+	{"V18", "V18"},
+	{"V19", "V19"},
+	{"V20", "V20"},
+	{"V21", "V21"},
+	{"V22", "V22"},
+	{"V23", "V23"},
+	{"V24", "V24"},
+	{"V25", "V25"},
+	{"V26", "V26"},
+	{"V27", "V27"},
+	{"V28", "V28"},
+	{"V29", "V29"},
+	{"V30", "V30"},
+	{"V31", "V31"},
+	{"a(FP)", "a(FP)"},
+	{"g", "g"},
+	{"ret+8(FP)", "ret+8(FP)"},
+	{"runtime·abort(SB)", "runtime.abort(SB)"},
+	{"·AddUint32(SB)", "\"\".AddUint32(SB)"},
+	{"·trunc(SB)", "\"\".trunc(SB)"},
+	{"[):[o-FP", ""}, // Issue 12469 - asm hung parsing the o-FP range on non ARM platforms.
+}
diff --git a/src/cmd/asm/internal/asm/testdata/s390x.s b/src/cmd/asm/internal/asm/testdata/s390x.s
new file mode 100644
index 0000000000..148cd2eaae
--- /dev/null
+++ b/src/cmd/asm/internal/asm/testdata/s390x.s
@@ -0,0 +1,215 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+TEXT main·foo(SB),7,$16-0 // TEXT main.foo(SB), 7, $16-0
+	MOVD	R1, R2                // b9040021
+	MOVW	R3, R4                // b9140043
+	MOVH	R5, R6                // b9070065
+	MOVB	R7, R8                // b9060087
+	MOVWZ	R1, R2                // b9160021
+	MOVHZ	R2, R3                // b9850032
+	MOVBZ	R4, R5                // b9840054
+	MOVDBR	R1, R2                // b90f0021
+	MOVWBR	R3, R4                // b91f0043
+
+	MOVD	(R15), R1             // e310f0000004
+	MOVW	(R15), R2             // e320f0000014
+	MOVH	(R15), R3             // e330f0000015
+	MOVB	(R15), R4             // e340f0000077
+	MOVWZ	(R15), R5             // e350f0000016
+	MOVHZ	(R15), R6             // e360f0000091
+	MOVBZ	(R15), R7             // e370f0000090
+	MOVDBR	(R15), R8             // e380f000000f
+	MOVWBR	(R15), R9             // e390f000001e
+
+	MOVD	R1, n-8(SP)           // e310f0100024
+	MOVW	R2, n-8(SP)           // e320f0100050
+	MOVH	R3, n-8(SP)           // e330f0100070
+	MOVB	R4, n-8(SP)           // e340f0100072
+	MOVWZ	R5, n-8(SP)           // e350f0100050
+	MOVHZ	R6, n-8(SP)           // e360f0100070
+	MOVBZ	R7, n-8(SP)           // e370f0100072
+	MOVDBR	R8, n-8(SP)           // e380f010002f
+	MOVWBR	R9, n-8(SP)           // e390f010003e
+
+	MOVD	$-8589934592, R1      // c01efffffffe
+	MOVW	$-131072, R2          // c021fffe0000
+	MOVH	$-512, R3             // a739fe00
+	MOVB	$-1, R4               // a749ffff
+
+	MOVD	$-2147483648, n-8(SP) // c0b180000000e3b0f0100024
+	MOVW	$-131072, n-8(SP)     // c0b1fffe0000e3b0f0100050
+	MOVH	$-512, n-8(SP)        // e544f010fe00
+	MOVB	$-1, n-8(SP)          // 92fff010
+
+	ADD	R1, R2                // b9e81022
+	ADD	R1, R2, R3            // b9e81032
+	ADD	$8192, R1             // c21800002000
+	ADD	$8192, R1, R2         // ec21200000d9
+	ADDC	R1, R2                // b9ea1022
+	ADDC	$1, R1, R2            // b9040021c22a00000001
+	ADDC	R1, R2, R3            // b9ea1032
+	SUB	R3, R4                // b9090043
+	SUB	R3, R4, R5            // b9e93054
+	SUB	$8192, R3             // c238ffffe000
+	SUB	$8192, R3, R4         // ec43e00000d9
+	SUBC	R1, R2                // b90b0021
+	SUBC	$1, R1, R2            // b9040021c22affffffff
+	SUBC	R2, R3, R4            // b9eb2043
+	MULLW	R6, R7                // b91c0076
+	MULLW	R6, R7, R8            // b9040087b91c0086
+	MULLW	$8192, R6             // c26000002000
+	MULLW	$8192, R6, R7         // b9040076c27000002000
+	DIVD	R1, R2                // b90400b2b90d00a1b904002b
+	DIVD	R1, R2, R3            // b90400b2b90d00a1b904003b
+	DIVW	R4, R5                // b90400b5b91d00a4b904005b
+	DIVW	R4, R5, R6            // b90400b5b91d00a4b904006b
+	DIVDU	R7, R8                // b90400a0b90400b8b98700a7b904008b
+	DIVDU	R7, R8, R9            // b90400a0b90400b8b98700a7b904009b
+	DIVWU	R1, R2                // b90400a0b90400b2b99700a1b904002b
+	DIVWU	R1, R2, R3            // b90400a0b90400b2b99700a1b904003b
+
+	XC	$8, (R15), n-8(SP)       // XC  (R15), $8, n-8(SP)       // d707f010f000
+	NC	$8, (R15), n-8(SP)       // NC  (R15), $8, n-8(SP)       // d407f010f000
+	OC	$8, (R15), n-8(SP)       // OC  (R15), $8, n-8(SP)       // d607f010f000
+	MVC	$8, (R15), n-8(SP)       // MVC (R15), $8, n-8(SP)       // d207f010f000
+	CLC	$8, (R15), n-8(SP)       // CLC (R15), $8, n-8(SP)       // d507f000f010
+	XC	$256, -8(R15), -8(R15)   // XC  -8(R15), $256, -8(R15)   // b90400afc2a8fffffff8d7ffa000a000
+	MVC	$256, 8192(R1), 8192(R2) // MVC 8192(R1), $256, 8192(R2) // b90400a2c2a800002000b90400b1c2b800002000d2ffa000b000
+
+	CMP	R1, R2                 // b9200012
+	CMP	R3, $-2147483648       // c23c80000000
+	CMPU	R4, R5                 // b9210045
+	CMPU	R6, $4294967295        // c26effffffff
+	CMPW	R7, R8                 // 1978
+	CMPW	R9, $-2147483648       // c29d80000000
+	CMPWU	R1, R2                 // 1512
+	CMPWU	R3, $4294967295        // c23fffffffff
+
+	BNE	0(PC)                  // a7740000
+	BEQ	0(PC)                  // a7840000
+	BLT	0(PC)                  // a7440000
+	BLE	0(PC)                  // a7c40000
+	BGT	0(PC)                  // a7240000
+	BGE	0(PC)                  // a7a40000
+
+	CMPBNE	R1, R2, 0(PC)          // ec1200007064
+	CMPBEQ	R3, R4, 0(PC)          // ec3400008064
+	CMPBLT	R5, R6, 0(PC)          // ec5600004064
+	CMPBLE	R7, R8, 0(PC)          // ec780000c064
+	CMPBGT	R9, R1, 0(PC)          // ec9100002064
+	CMPBGE	R2, R3, 0(PC)          // ec230000a064
+
+	CMPBNE	R1, $-127, 0(PC)       // ec170000817c
+	CMPBEQ	R3, $0, 0(PC)          // ec380000007c
+	CMPBLT	R5, $128, 0(PC)        // ec540000807c
+	CMPBLE	R7, $127, 0(PC)        // ec7c00007f7c
+	CMPBGT	R9, $0, 0(PC)          // ec920000007c
+	CMPBGE	R2, $128, 0(PC)        // ec2a0000807c
+
+	CMPUBNE	R1, R2, 0(PC)          // ec1200007065
+	CMPUBEQ	R3, R4, 0(PC)          // ec3400008065
+	CMPUBLT	R5, R6, 0(PC)          // ec5600004065
+	CMPUBLE	R7, R8, 0(PC)          // ec780000c065
+	CMPUBGT	R9, R1, 0(PC)          // ec9100002065
+	CMPUBGE	R2, R3, 0(PC)          // ec230000a065
+
+	CMPUBNE	R1, $256, 0(PC)        // ec170000007d
+	CMPUBEQ	R3, $0, 0(PC)          // ec380000007d
+	CMPUBLT	R5, $256, 0(PC)        // ec540000007d
+	CMPUBLE	R7, $0, 0(PC)          // ec7c0000007d
+	CMPUBGT	R9, $256, 0(PC)        // ec920000007d
+	CMPUBGE	R2, $0, 0(PC)          // ec2a0000007d
+
+	CEFBRA	R0, F15                // b39400f0
+	CDFBRA	R1, F14                // b39500e1
+	CEGBRA	R2, F13                // b3a400d2
+	CDGBRA	R3, F12                // b3a500c3
+
+	CELFBR	R0, F15                // b39000f0
+	CDLFBR	R1, F14                // b39100e1
+	CELGBR	R2, F13                // b3a000d2
+	CDLGBR	R3, F12                // b3a100c3
+
+	CFEBRA	F15, R1                // b398501f
+	CFDBRA	F14, R2                // b399502e
+	CGEBRA	F13, R3                // b3a8503d
+	CGDBRA	F12, R4                // b3a9504c
+
+	CLFEBR	F15, R1                // b39c501f
+	CLFDBR	F14, R2                // b39d502e
+	CLGEBR	F13, R3                // b3ac503d
+	CLGDBR	F12, R4                // b3ad504c
+
+	FMOVS	$0, F11                // b37400b0
+	FMOVD	$0, F12                // b37500c0
+	FMOVS	(R1)(R2*1), F0         // ed0210000064
+	FMOVS	n-8(SP), F15           // edf0f0100064
+	FMOVD	-9999999(R8)(R9*1), F8 // c0a1ff67698141aa9000ed8a80000065
+	FMOVD	F4, F5                 // 2854
+	FADDS	F0, F15                // b30a00f0
+	FADD	F1, F14                // b31a00e1
+	FSUBS	F2, F13                // b30b00d2
+	FSUB	F3, F12                // b31b00c3
+	FMULS	F4, F11                // b31700b4
+	FMUL	F5, F10                // b31c00a5
+	FDIVS	F6, F9                 // b30d0096
+	FDIV	F7, F8                 // b31d0087
+	FABS	F1, F2                 // b3100021
+	FSQRTS	F3, F4                 // b3140043
+	FSQRT	F5, F15                // b31500f5
+
+	VL	(R15), V1              // e710f0000006
+	VST	V1, (R15)              // e710f000000e
+	VL	(R15), V31             // e7f0f0000806
+	VST	V31, (R15)             // e7f0f000080e
+	VESLB	$5, V14                // e7ee00050030
+	VESRAG	$0, V15, V16           // e70f0000383a
+	VLM	(R15), V8, V23         // e787f0000436
+	VSTM	V8, V23, (R15)         // e787f000043e
+	VONE	V1                     // e710ffff0044
+	VZERO	V16                    // e70000000844
+	VGBM	$52428, V31            // e7f0cccc0844
+	VREPIB	$255, V4               // e74000ff0045
+	VREPG	$1, V4, V16            // e7040001384d
+	VREPB	$4, V31, V1            // e71f0004044d
+	VFTCIDB	$4095, V1, V2          // e721fff0304a
+	WFTCIDB	$3276, V15, V16        // e70fccc8384a
+	VPOPCT	V8, V19                // e73800000850
+	VFEEZBS	V1, V2, V31            // e7f120300880
+	WFCHDBS	V22, V23, V4           // e746701836eb
+	VMNH	V1, V2, V30            // e7e1200018fe
+	VO	V2, V1, V0             // e7021000006a
+	VERLLVF	V2, V30, V27           // e7be20002c73
+	VSCBIB	V0, V23, V24           // e78700000cf5
+	VNOT	V16, V1                // e7101000046b
+	VCLZF	V16, V17               // e71000002c53
+	VLVGP	R3, R4, V8             // e78340000062
+
+	// Some vector instructions have their inputs reordered.
+	// Typically the reordering puts the length/index input into From3.
+	VGEG	$1, 8(R15)(V30*1), V31  // VGEG    8(R15)(V30*1), $1, V31  // e7fef0081c12
+	VSCEG	$1, V31, 16(R15)(V30*1) // VSCEG   V31, $1, 16(R15)(V30*1) // e7fef0101c1a
+	VGEF	$0, 2048(R15)(V1*1), V2 // VGEF    2048(R15)(V1*1), $0, V2 // e721f8000013
+	VSCEF	$0, V2, 4095(R15)(V1*1) // VSCEF   V2, $0, 4095(R15)(V1*1) // e721ffff001b
+	VLL	R0, (R15), V1           // VLL     (R15), R0, V1           // e710f0000037
+	VSTL	R0, V16, (R15)          // VSTL    V16, R0, (R15)          // e700f000083f
+	VGMH	$8, $16, V12            // VGMH    $16, $8, V12            // e7c008101046
+	VLEIF	$2, $-43, V16           // VLEIF   $-43, $2, V16           // e700ffd52843
+	VSLDB	$3, V1, V16, V18        // VSLDB   V1, V16, $3, V18        // e72100030a77
+	VERIMB	$2, V31, V1, V2         // VERIMB  V31, V1, $2, V2         // e72f10020472
+	VSEL	V1, V2, V3, V4          // VSEL    V2, V3, V1, V4          // e7412000308d
+	VGFMAH	V21, V31, V24, V0       // VGFMAH  V31, V24, V21, V0       // e705f10087bc
+	WFMSDB	V2, V25, V24, V31       // WFMSDB  V25, V24, V2, V31       // e7f298038b8e
+	VPERM	V31, V0, V2, V3         // VPERM   V0, V2, V31, V3         // e73f0000248c
+	VPDI	$1, V2, V31, V1         // VPDI    V2, V31, $1, V1         // e712f0001284
+
+	RET
+
+TEXT main·init(SB),7,$0 // TEXT main.init(SB), 7, $0
+	RET
+
+TEXT main·main(SB),7,$0 // TEXT main.main(SB), 7, $0
+	BL      main·foo(SB)    // CALL main.foo(SB)
+	RET