codegen-ssa: add more risc-v isa sets as features

Based on discussion at: rust-lang/stdarch#1263 (review)

Extension 'e' is renamed to 'rv32e'.

Author: luojia65

compiler/rustc_codegen_ssa/src/target_features.rs

@@ -207,12 +207,55 @@ const MIPS_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] =
     &[("fp64", Some(sym::mips_target_feature)), ("msa", Some(sym::mips_target_feature))];
 
 const RISCV_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
+    ("rv32i", Some(sym::riscv_target_feature)),
+    ("zifencei", Some(sym::riscv_target_feature)),
+    ("zihintpause", Some(sym::riscv_target_feature)),
+    ("rv64i", Some(sym::riscv_target_feature)),
     ("m", Some(sym::riscv_target_feature)),
     ("a", Some(sym::riscv_target_feature)),
-    ("c", Some(sym::riscv_target_feature)),
+    ("zicsr", Some(sym::riscv_target_feature)),
+    ("zicntr", Some(sym::riscv_target_feature)),
+    ("zihpm", Some(sym::riscv_target_feature)),
     ("f", Some(sym::riscv_target_feature)),
     ("d", Some(sym::riscv_target_feature)),
-    ("e", Some(sym::riscv_target_feature)),
+    ("q", Some(sym::riscv_target_feature)),
+    ("c", Some(sym::riscv_target_feature)),
+    ("zfinx", Some(sym::riscv_target_feature)),
+    ("zdinx", Some(sym::riscv_target_feature)),
+    ("zhinx", Some(sym::riscv_target_feature)),
+    ("zhinxmin", Some(sym::riscv_target_feature)),
+    ("ztso", Some(sym::riscv_target_feature)),
+    ("rv32e", Some(sym::riscv_target_feature)),
+    ("rv128i", Some(sym::riscv_target_feature)),
+    ("zfh", Some(sym::riscv_target_feature)),
+    ("zfhmin", Some(sym::riscv_target_feature)),
+    ("b", Some(sym::riscv_target_feature)),
+    ("j", Some(sym::riscv_target_feature)),
+    ("p", Some(sym::riscv_target_feature)),
+    ("v", Some(sym::riscv_target_feature)),
+    ("zam", Some(sym::riscv_target_feature)),
+    ("s", Some(sym::riscv_target_feature)),
+    ("svnapot", Some(sym::riscv_target_feature)),
+    ("svpbmt", Some(sym::riscv_target_feature)),
+    ("svinval", Some(sym::riscv_target_feature)),
+    ("h", Some(sym::riscv_target_feature)),
+    ("zba", Some(sym::riscv_target_feature)),
+    ("zbb", Some(sym::riscv_target_feature)),
+    ("zbc", Some(sym::riscv_target_feature)),
+    ("zbs", Some(sym::riscv_target_feature)),
+    ("zbkb", Some(sym::riscv_target_feature)),
+    ("zbkc", Some(sym::riscv_target_feature)),
+    ("zbkx", Some(sym::riscv_target_feature)),
+    ("zknd", Some(sym::riscv_target_feature)),
+    ("zkne", Some(sym::riscv_target_feature)),
+    ("zknh", Some(sym::riscv_target_feature)),
+    ("zksed", Some(sym::riscv_target_feature)),
+    ("zksh", Some(sym::riscv_target_feature)),
+    ("zkr", Some(sym::riscv_target_feature)),
+    ("zkn", Some(sym::riscv_target_feature)),
+    ("zks", Some(sym::riscv_target_feature)),
+    ("zk", Some(sym::riscv_target_feature)),
+    ("zkt", Some(sym::riscv_target_feature)),
 ];
 
 const WASM_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[