[llvm] [RISCV] Add extension information to RISCVFeatures.td. NFC (PR #89326)

[Pengcheng Wang via llvm-commits]

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@@ -500,136 +538,138 @@ def HasStdExtZkndOrZkne
                          "'Zkne' (NIST Suite: AES Encryption)">;
 
 def FeatureStdExtZknh
-    : SubtargetFeature<"zknh", "HasStdExtZknh", "true",
-                       "'Zknh' (NIST Suite: Hash Function Instructions)">;
+    : RISCVExtension<"zknh", 1, 0,
+                     "'Zknh' (NIST Suite: Hash Function Instructions)">;
 def HasStdExtZknh : Predicate<"Subtarget->hasStdExtZknh()">,
                     AssemblerPredicate<(all_of FeatureStdExtZknh),
                         "'Zknh' (NIST Suite: Hash Function Instructions)">;
 
 def FeatureStdExtZksed
-    : SubtargetFeature<"zksed", "HasStdExtZksed", "true",
-                       "'Zksed' (ShangMi Suite: SM4 Block Cipher Instructions)">;
+    : RISCVExtension<"zksed", 1, 0,
+                     "'Zksed' (ShangMi Suite: SM4 Block Cipher Instructions)">;
 def HasStdExtZksed : Predicate<"Subtarget->hasStdExtZksed()">,
                      AssemblerPredicate<(all_of FeatureStdExtZksed),
                          "'Zksed' (ShangMi Suite: SM4 Block Cipher Instructions)">;
 
 def FeatureStdExtZksh
-    : SubtargetFeature<"zksh", "HasStdExtZksh", "true",
-                       "'Zksh' (ShangMi Suite: SM3 Hash Function Instructions)">;
+    : RISCVExtension<"zksh", 1, 0,
+                     "'Zksh' (ShangMi Suite: SM3 Hash Function Instructions)">;
 def HasStdExtZksh : Predicate<"Subtarget->hasStdExtZksh()">,
                     AssemblerPredicate<(all_of FeatureStdExtZksh),
                         "'Zksh' (ShangMi Suite: SM3 Hash Function Instructions)">;
 
 def FeatureStdExtZkr
-    : SubtargetFeature<"zkr", "HasStdExtZkr", "true",
-                       "'Zkr' (Entropy Source Extension)">;
+    : RISCVExtension<"zkr", 1, 0,
+                     "'Zkr' (Entropy Source Extension)">;
 def HasStdExtZkr : Predicate<"Subtarget->hasStdExtZkr()">,
                    AssemblerPredicate<(all_of FeatureStdExtZkr),
                                       "'Zkr' (Entropy Source Extension)">;
 
 def FeatureStdExtZkn
-    : SubtargetFeature<"zkn", "HasStdExtZkn", "true",
-                       "'Zkn' (NIST Algorithm Suite)",
-                       [FeatureStdExtZbkb,
-                        FeatureStdExtZbkc,
-                        FeatureStdExtZbkx,
-                        FeatureStdExtZkne,
-                        FeatureStdExtZknd,
-                        FeatureStdExtZknh]>;
+    : RISCVExtension<"zkn", 1, 0,
+                     "'Zkn' (NIST Algorithm Suite)",
+                     [FeatureStdExtZbkb,
+                      FeatureStdExtZbkc,
+                      FeatureStdExtZbkx,
+                      FeatureStdExtZkne,
+                      FeatureStdExtZknd,
+                      FeatureStdExtZknh]>;
 
 def FeatureStdExtZks
-    : SubtargetFeature<"zks", "HasStdExtZks", "true",
-                       "'Zks' (ShangMi Algorithm Suite)",
-                       [FeatureStdExtZbkb,
-                        FeatureStdExtZbkc,
-                        FeatureStdExtZbkx,
-                        FeatureStdExtZksed,
-                        FeatureStdExtZksh]>;
+    : RISCVExtension<"zks", 1, 0,
+                     "'Zks' (ShangMi Algorithm Suite)",
+                     [FeatureStdExtZbkb,
+                      FeatureStdExtZbkc,
+                      FeatureStdExtZbkx,
+                      FeatureStdExtZksed,
+                      FeatureStdExtZksh]>;
 
 def FeatureStdExtZkt
-    : SubtargetFeature<"zkt", "HasStdExtZkt", "true",
-                       "'Zkt' (Data Independent Execution Latency)">;
+    : RISCVExtension<"zkt", 1, 0,
+                     "'Zkt' (Data Independent Execution Latency)">;
 
 def FeatureStdExtZk
-    : SubtargetFeature<"zk", "HasStdExtZk", "true",
-                       "'Zk' (Standard scalar cryptography extension)",
-                       [FeatureStdExtZkn,
-                        FeatureStdExtZkr,
-                        FeatureStdExtZkt]>;
+    : RISCVExtension<"zk", 1, 0,
+                     "'Zk' (Standard scalar cryptography extension)",
+                     [FeatureStdExtZkn,
+                      FeatureStdExtZkr,
+                      FeatureStdExtZkt]>;
 
 // Vector Extensions
 
-def FeatureStdExtZvl32b : SubtargetFeature<"zvl32b", "ZvlLen", "32",
-                                           "'Zvl' (Minimum Vector Length) 32">;
+def FeatureStdExtZvl32b : RISCVExtension<"zvl32b", 1, 0,
+                                         "'Zvl' (Minimum Vector Length) 32", [],
+                                          "ZvlLen", "32">;
 
 foreach i = { 6-16 } in {
   defvar I = !shl(1, i);
   def FeatureStdExtZvl#I#b :
-      SubtargetFeature<"zvl"#I#"b", "ZvlLen", !cast<string>(I),
-                       "'Zvl' (Minimum Vector Length) "#I,
-                       [!cast<SubtargetFeature>("FeatureStdExtZvl"#!srl(I, 1)#"b")]>;
+      RISCVExtension<"zvl"#I#"b", 1, 0,
+                     "'Zvl' (Minimum Vector Length) "#I,
+                     [!cast<RISCVExtension>("FeatureStdExtZvl"#!srl(I, 1)#"b")],
+                      "ZvlLen", !cast<string>(I)>;
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wangpc-pp wrote:

ditto.

https://github.com/llvm/llvm-project/pull/89326