Add flh/fsh/fmv_h_x/fmv_x_h instructions to Zvfbfmin/Zvfbfwma extensions

riscv/insns/flh.h

@@ -1,3 +1,3 @@
-require_extension(EXT_ZFHMIN);
+require_extension(EXT_INTERNAL_ZFH_MOVE);
 require_fp;
 WRITE_FRD(f16(MMU.load<uint16_t>(RS1 + insn.i_imm())));

riscv/insns/fmv_h_x.h

@@ -1,3 +1,3 @@
-require_extension(EXT_ZFHMIN);
+require_extension(EXT_INTERNAL_ZFH_MOVE);
 require_fp;
 WRITE_FRD(f16(RS1));

riscv/insns/fmv_x_h.h

@@ -1,3 +1,3 @@
-require_extension(EXT_ZFHMIN);
+require_extension(EXT_INTERNAL_ZFH_MOVE);
 require_fp;
 WRITE_RD(sext32((int16_t)(FRS1.v[0])));

riscv/insns/fsh.h

@@ -1,3 +1,3 @@
-require_extension(EXT_ZFHMIN);
+require_extension(EXT_INTERNAL_ZFH_MOVE);
 require_fp;
 MMU.store<uint16_t>(RS1 + insn.s_imm(), FRS2.v[0]);

riscv/isa_parser.cc

@@ -293,6 +293,10 @@ isa_parser_t::isa_parser_t(const char* str, const char *priv)
     bad_isa_string(str, "'Zvfbfmin/Zvfbfwma' extension requires 'V' extension");
   }
 
+  if (extension_table[EXT_ZFBFMIN] || extension_table[EXT_ZVFBFMIN] || extension_table[EXT_ZFHMIN]) {
+    extension_table[EXT_INTERNAL_ZFH_MOVE] = true;
+  }
+
   if (extension_table['C']) {
     extension_table[EXT_ZCA] = true;
     if (extension_table['F'] && max_xlen == 32)

riscv/isa_parser.h

@@ -69,6 +69,7 @@ typedef enum {
   EXT_XZBR,
   EXT_XZBT,
   EXT_SSTC,
+  EXT_INTERNAL_ZFH_MOVE,
   NUM_ISA_EXTENSIONS
 } isa_extension_t;