Add flag to disable Zvfh instructions

Makefile

@@ -32,6 +32,9 @@
   INTEGER = 0##
         ##Set to [1] if you don't want float tests (i.e. for Zve32x or Zve64x)
         ##
+  FLOAT16 = 1##
+        ##Set to [0] if you don't want float16 (Zvfh) tests
+        ##
   PATTERN = '.*'##
         ##Set to a valid regex to generate the tests of your interests (e.g. PATTERN='^v[ls].+\.v$' to generate only load/store tests)
         ##
@@ -112,7 +115,7 @@ unittest:
 
 generate-stage1: clean-out build
 	@mkdir -p ${OUTPUT_STAGE1}
-	build/generator -VLEN ${VLEN} -XLEN ${XLEN} -split=${SPLIT} -integer=${INTEGER} -pattern='${PATTERN}' -testfloat3level='${TESTFLOAT3LEVEL}' -repeat='${REPEAT}' -stage1output ${OUTPUT_STAGE1} -configs ${CONFIGS}
+	build/generator -VLEN ${VLEN} -XLEN ${XLEN} -split=${SPLIT} -integer=${INTEGER} -float16=${FLOAT16} -pattern='${PATTERN}' -testfloat3level='${TESTFLOAT3LEVEL}' -repeat='${REPEAT}' -stage1output ${OUTPUT_STAGE1} -configs ${CONFIGS}
 
 include Makefrag
 

generator/insn.go

@@ -19,6 +19,7 @@ type Option struct {
 	VLEN   VLEN
 	XLEN   XLEN
 	Repeat int
+	Float16 bool
 }
 
 const minStride = -1 // Must be negative

generator/insn_fdvs2.go

@@ -6,7 +6,7 @@ import (
 )
 
 func (i *Insn) genCodeFdVs2(pos int) []string {
-	combinations := i.combinations([]LMUL{1}, floatSEWs, []bool{false}, i.vxrms())
+	combinations := i.combinations([]LMUL{1}, i.floatSEWs(), []bool{false}, i.vxrms())
 
 	res := make([]string, 0, len(combinations))
 	for _, c := range combinations[pos:] {

generator/insn_util.go

@@ -29,7 +29,13 @@ type VXSAT bool
 type SEW int
 
 var allSEWs = []SEW{8, 16, 32, 64}
-var floatSEWs = []SEW{16, 32, 64}
+func (i *Insn) floatSEWs() []SEW {
+	if (i.Option.Float16) {
+		return []SEW{16,32,64}
+	} else {
+		return []SEW{32,64}
+	}
+}
 var validSEWs = map[SEW]struct{}{
 	allSEWs[0]: {},
 	allSEWs[1]: {},

generator/insn_vdfs1.go

@@ -7,7 +7,7 @@ import (
 
 func (i *Insn) genCodeVdFs1(pos int) []string {
 	lmuls := iff(strings.HasSuffix(i.Name, ".s.f"), []LMUL{1}, allLMULs)
-	combinations := i.combinations(lmuls, floatSEWs, []bool{false}, i.vxrms())
+	combinations := i.combinations(lmuls, i.floatSEWs(), []bool{false}, i.vxrms())
 
 	res := make([]string, 0, len(combinations))
 	for _, c := range combinations[pos:] {

generator/insn_vdfs1vs2vm.go

@@ -10,7 +10,7 @@ func (i *Insn) genCodeVdFs1Vs2Vm(pos int) []string {
 	vdWidening := strings.HasPrefix(i.Name, "vfw")
 	vdSize := iff(vdWidening, 2, 1)
 
-	sews := iff(vdWidening, floatSEWs[:len(floatSEWs)-1], floatSEWs)
+	sews := iff(vdWidening, i.floatSEWs()[:len(i.floatSEWs())-1], i.floatSEWs())
 	combinations := i.combinations(
 		iff(vdWidening, wideningMULs, allLMULs),
 		sews,

generator/insn_vdvs1vs2vm.go

@@ -12,7 +12,7 @@ func (i *Insn) genCodeVdVs1Vs2Vm(pos int) []string {
 	vdSize := iff(vdWidening, 2, 1)
 	vs1Size := 1
 
-	sews := iff(float, floatSEWs, allSEWs)
+	sews := iff(float, i.floatSEWs(), allSEWs)
 	sews = iff(vdWidening, sews[:len(sews)-1], sews)
 	combinations := i.combinations(
 		iff(vdWidening, wideningMULs, allLMULs),

generator/insn_vdvs2fs1v0.go

@@ -6,7 +6,7 @@ import (
 )
 
 func (i *Insn) genCodeVdVs2Fs1V0(pos int) []string {
-	combinations := i.combinations(allLMULs, floatSEWs, []bool{false}, i.vxrms())
+	combinations := i.combinations(allLMULs, i.floatSEWs(), []bool{false}, i.vxrms())
 	res := make([]string, 0, len(combinations))
 
 	for _, c := range combinations[pos:] {

generator/insn_vdvs2fs1vm.go

@@ -12,7 +12,7 @@ func (i *Insn) genCodeVdVs2Fs1Vm(pos int) []string {
 	vdSize := iff(vdWidening, 2, 1)
 	vs2Size := iff(vs2Widening, 2, 1)
 
-	sews := iff(vdWidening || vs2Widening, floatSEWs[:len(floatSEWs)-1], floatSEWs)
+	sews := iff(vdWidening || vs2Widening, i.floatSEWs()[:len(i.floatSEWs())-1], i.floatSEWs())
 	combinations := i.combinations(
 		iff(vdWidening || vs2Widening, wideningMULs, allLMULs),
 		sews,

generator/insn_vdvs2vm.go

@@ -14,7 +14,7 @@ func (i *Insn) genCodeVdVs2Vm(pos int) []string {
 	vs2Size := iff(vdNarrowing, 2, 1)
 
 	lmuls := iff(vdWidening || vdNarrowing, wideningMULs, allLMULs)
-	sews := iff(vdWidening || vdNarrowing, floatSEWs[:len(floatSEWs)-1], floatSEWs)
+	sews := iff(vdWidening || vdNarrowing, i.floatSEWs()[:len(i.floatSEWs())-1], i.floatSEWs())
 	combinations := i.combinations(lmuls, sews, []bool{false, true}, i.vxrms())
 
 	res := make([]string, 0, len(combinations))

generator/insn_vdvs2vs1vm.go

@@ -13,7 +13,7 @@ func (i *Insn) genCodeVdVs2Vs1Vm(pos int) []string {
 	vdSize := iff(vdWidening, 2, 1)
 	vs2Size := iff(vs2Widening, 2, 1)
 
-	sews := iff(float, floatSEWs, allSEWs)
+	sews := iff(float, i.floatSEWs(), allSEWs)
 	sews = iff(vdWidening || vs2Widening, sews[:len(sews)-1], sews)
 	combinations := i.combinations(
 		iff(vdWidening || vs2Widening, wideningMULs, allLMULs),

main.go

@@ -28,6 +28,7 @@ var vlenF = flag.Int("VLEN", 256, "")
 var xlenF = flag.Int("XLEN", 64, "we do not support specifying ELEN yet, ELEN is consistent with XLEN.")
 var splitF = flag.Int("split", 10000, "split per lines.")
 var integerF = flag.Bool("integer", false, "only generate integer tests.")
+var float16F = flag.Bool("float16", true, "generate float16 tests")
 var patternF = flag.String("pattern", ".*", "regex to filter out tests.")
 var stage1OutputDirF = flag.String("stage1output", "", "stage1 output directory.")
 var configsDirF = flag.String("configs", "configs/", "config files directory.")
@@ -94,6 +95,7 @@ func main() {
 				VLEN:   generator.VLEN(*vlenF),
 				XLEN:   generator.XLEN(*xlenF),
 				Repeat: *repeatF,
+                                Float16: *float16F,
 			}
 			if (!strings.HasPrefix(file.Name(), "vf") && !strings.HasPrefix(file.Name(), "vmf")) || strings.HasPrefix(file.Name(), "vfirst") {
 				option.Repeat = 1

single/single.go

@@ -23,6 +23,7 @@ func fatalIf(err error) {
 
 var vlenF = flag.Int("VLEN", 256, "")
 var xlenF = flag.Int("XLEN", 64, "")
+var float16F = flag.Bool("float16", true, "")
 var outputFileF = flag.String("outputfile", "", "output file name.")
 var configFileF = flag.String("configfile", "", "config file path.")
 var testfloat3LevelF = flag.Int("testfloat3level", 2, "testfloat3 testing level (1 or 2).")
@@ -52,6 +53,7 @@ func main() {
 		VLEN:   generator.VLEN(*vlenF),
 		XLEN:   generator.XLEN(*xlenF),
 		Repeat: *repeatF,
+		Float16: *float16F,
 	}
 
 	fp := *configFileF