riscv64: add support for Zicond instructions

Author: lxq015

riscv64/riscv64asm/tables.go

@@ -384,6 +384,10 @@ a260|	ld x1,8(x2)
 8624|	fld f9,64(x2)
 3eb0|	fsd f15,32(x2)
 
+# 12.3: "Zicond" Extension for Integer Conditional Operations, Version 1.0.0
+b353530e|	czero.eqz	x7,x6,x5
+b373530e|	czero.nez	x7,x6,x5
+
 # "V" Standard Extension for Vector Operations, Version 1.0
 
 # 31.6: Configuration Setting Instructions

riscv64/riscv64asm/testdata/gnucases.txt

@@ -334,6 +334,10 @@ b35cbd49|	BEXT X27, X26, X25
 b3115228|	BSET X5, X4, X3
 1393f32b|	BSETI $63, X7, X6
 
+# 12.3: "Zicond" Extension for Integer Conditional Operations, Version 1.0.0
+b353530e|	CZEROEQZ	X5, X6, X7
+b373530e|	CZERONEZ	X5, X6, X7
+
 # "V" Standard Extension for Vector Operations, Version 1.0
 
 # 31.6: Configuration Setting Instructions

riscv64/riscv64asm/testdata/plan9cases.txt

@@ -36,6 +36,7 @@ var extensions = []string{
 	"rv_zbb",
 	"rv_zbs",
 	"rv_zfh",
+	"rv_zicond",
 	"rv_zicsr",
 	"rv_zifencei",
 	"rv64_a",
@@ -171,7 +172,7 @@ func main() {
 
 func genInst(words []string) {
 	op := strings.ToUpper(strings.Replace(words[0], ".", "_", -1))
-	opstr := fmt.Sprintf("%s:\t\"%s\",", op, strings.ToUpper(words[0]))
+	opstr := fmt.Sprintf("%-18s %q,", op+":", strings.ToUpper(words[0]))
 
 	var value uint32
 	var mask uint32
@@ -207,7 +208,7 @@ func genInst(words []string) {
 		// Re-generate the opcode string, opcode value and mask.
 		for i, suf := range suffix {
 			aop := op + strings.Replace(suf, ".", "_", -1)
-			aopstr := fmt.Sprintf("%s:\t\"%s\",", aop, strings.ToUpper(words[0])+suf)
+			aopstr := fmt.Sprintf("%-18s %q,", aop+":", strings.ToUpper(words[0])+suf)
 			avalue := value | (uint32(i) << 25)
 			amask := mask | 0x06000000
 			ainstFormatComment := "// " + strings.Replace(aop, "_", ".", -1) + " " + strings.Replace(instArgsStr, "arg_", "", -1)
@@ -243,7 +244,7 @@ func genInst(words []string) {
 	for i := uint32(2); i <= 8; i++ {
 		segName := strings.ToUpper(fmt.Sprintf("%sSEG%d%s", segOpPrefix, i, segOpSuffix))
 		segOp := strings.Replace(segName, ".", "_", -1)
-		segOpStr := fmt.Sprintf("%s:\t\"%s\",", segOp, segName)
+		segOpStr := fmt.Sprintf("%-18s %q,", segOp+":", segName)
 		segValue := value | (i-1)<<29
 		instFormatComment := "// " + segName + " " + strings.Replace(instArgsStr, "arg_", "", -1)
 		instFormat := fmt.Sprintf("{mask: %#08x, value: %#08x, op: %s, args: argTypeList{%s}},", mask, segValue, segOp, instArgsStr)