cmd/asm/internal/asm/testdata/s390x: add test cases for some assembly instructions

From CL 199979, I noticed that there were some
instructions not covered by the test cases. Added those in this CL.

Additional tests for assembly instructions are also added
based on suggestions made during the review of this CL.

Previously, VSB and VSH are not included in asmz.go, they were also
added in this patch.

Change-Id: I6060a9813b483a161d61ad2240c30eec6de61536
Reviewed-on: https://go-review.googlesource.com/c/go/+/203721Reviewed-by: Michael Munday <mike.munday@ibm.com>

src/cmd/asm/internal/asm/testdata/s390x.s

@@ -201,6 +201,24 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
 	XORW	(R1), R2              // 57201000
 	XORW	-1(R1), R2            // e3201fffff57
 
+	// shift and rotate instructions
+	SRD	$4, R4, R7              // eb740004000c
+	SRD	R1, R4, R7              // eb741000000c
+	SRW	$4, R4, R7              // eb74000400de
+	SRW	R1, R4, R7              // eb74100000de
+	SLW	$4, R3, R6              // eb63000400df
+	SLW	R2, R3, R6              // eb63200000df
+	SLD	$4, R3, R6              // eb630004000d
+	SLD	R2, R3, R6              // eb632000000d
+	SRAD	$4, R5, R8              // eb850004000a
+	SRAD	R3, R5, R8              // eb853000000a
+	SRAW	$4, R5, R8              // eb85000400dc
+	SRAW	R3, R5, R8              // eb85300000dc
+	RLL	R1, R2, R3              // eb321000001d
+	RLL	$4, R2, R3              // eb320004001d
+	RLLG	R1, R2, R3              // eb321000001c
+	RLLG	$4, R2, R3              // eb320004001c
+
 	RNSBG	$0, $31, $32, R1, R2  // ec21001f2054
 	RXSBG	$17, $8, $16, R3, R4  // ec4311081057
 	ROSBG	$9, $24, $11, R5, R6  // ec6509180b56
@@ -227,6 +245,16 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
 	LAO	R1, R2, (R3)          // eb21300000f6
 	LAOG	R4, R5, (R6)          // eb54600000e6
 
+	// load and store multiple
+	LMG	n-8(SP), R3, R4         // eb34f0100004
+	LMG	-5(R5), R3, R4          // eb345ffbff04
+	LMY	n-8(SP), R3, R4         // 9834f010
+	LMY	4096(R1), R3, R4        // eb3410000198
+	STMG	R1, R2, n-8(SP)         // eb12f0100024
+	STMG	R1, R2, -5(R3)          // eb123ffbff24
+	STMY	R1, R2, n-8(SP)         // 9012f010
+	STMY	R1, R2, 4096(R3)        // eb1230000190
+
 	XC	$8, (R15), n-8(SP)       // d707f010f000
 	NC	$8, (R15), n-8(SP)       // d407f010f000
 	OC	$8, (R15), n-8(SP)       // d607f010f000
@@ -376,6 +404,29 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
 	UNDEF                          // 00000000
 	NOPH                           // 0700
 
+	// vector add and sub instructions
+	VAB	V3, V4, V4              // e743400000f3
+	VAH	V3, V4, V4              // e743400010f3
+	VAF	V3, V4, V4              // e743400020f3
+	VAG	V3, V4, V4              // e743400030f3
+	VAQ	V3, V4, V4              // e743400040f3
+	VAB	V1, V2                  // e721200000f3
+	VAH	V1, V2                  // e721200010f3
+	VAF	V1, V2                  // e721200020f3
+	VAG	V1, V2                  // e721200030f3
+	VAQ	V1, V2                  // e721200040f3
+	VSB	V3, V4, V4              // e744300000f7
+	VSH	V3, V4, V4              // e744300010f7
+	VSF	V3, V4, V4              // e744300020f7
+	VSG	V3, V4, V4              // e744300030f7
+	VSQ	V3, V4, V4              // e744300040f7
+	VSB	V1, V2                  // e722100000f7
+	VSH	V1, V2                  // e722100010f7
+	VSF	V1, V2                  // e722100020f7
+	VSG	V1, V2                  // e722100030f7
+	VSQ	V1, V2                  // e722100040f7
+
+	VCEQB	V1, V3, V3              // e731300000f8
 	VL	(R15), V1               // e710f0000006
 	VST	V1, (R15)               // e710f000000e
 	VL	(R15), V31              // e7f0f0000806
@@ -399,9 +450,16 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
 	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
+	VN	V2, V1, V0              // e70210000068
+	VNC	V2, V1, V0              // e70210000069
+	VO	V2, V1, V0              // e7021000006a
+	VX	V2, V1, V0              // e7021000006d
+	VN	V16, V1                 // e71010000468
+	VNC	V16, V1                 // e71010000469
+	VO	V16, V1                 // e7101000046a
+	VX	V16, V1                 // e7101000046d
 	VNOT	V16, V1                 // e7101000046b
 	VCLZF	V16, V17                // e71000002c53
 	VLVGP	R3, R4, V8              // e78340000062

src/cmd/internal/obj/s390x/asmz.go

@@ -1384,6 +1384,8 @@ func buildop(ctxt *obj.Link) {
 			opset(AVSRAB, r)
 			opset(AVSRL, r)
 			opset(AVSRLB, r)
+			opset(AVSB, r)
+			opset(AVSH, r)
 			opset(AVSF, r)
 			opset(AVSG, r)
 			opset(AVSQ, r)