RISC-V: Reordering related to 'S[ms]stateen'

This is a generic tidying commit to make ordering related to
'S[ms]stateen' extensions natural.

bfd/ChangeLog:

	* elfxx-riscv.c (riscv_implicit_subsets): Reorder 'Smstateen' ->
	'Ssstateen' implication.

gas/ChangeLog:

	* config/tc-riscv.c (enum riscv_csr_class): Reorder 'Ssstateen'-
	related CSR classes.
	(riscv_csr_address): Likewise.

Author: a4lg

bfd/elfxx-riscv.c

@@ -1184,8 +1184,8 @@ static struct riscv_implicit_subset riscv_implicit_subsets[] =
   {"zcb", "zca",	check_implicit_always},
   {"smaia", "ssaia",		check_implicit_always},
   {"smcntrpmf", "zicsr",	check_implicit_always},
-  {"smstateen", "ssstateen",	check_implicit_always},
   {"smepmp", "zicsr",		check_implicit_always},
+  {"smstateen", "ssstateen",	check_implicit_always},
   {"ssaia", "zicsr",		check_implicit_always},
   {"sscofpmf", "zicsr",		check_implicit_always},
   {"ssstateen", "zicsr",	check_implicit_always},

gas/config/tc-riscv.c

@@ -82,11 +82,11 @@ enum riscv_csr_class
   CSR_CLASS_SSAIA_AND_H,	/* Ssaia with H */
   CSR_CLASS_SSAIA_32,		/* Ssaia, rv32 only */
   CSR_CLASS_SSAIA_AND_H_32,	/* Ssaia with H, rv32 only */
+  CSR_CLASS_SSCOFPMF,		/* Sscofpmf only */
+  CSR_CLASS_SSCOFPMF_32,	/* Sscofpmf RV32 only */
   CSR_CLASS_SSSTATEEN,		/* S[ms]stateen only */
   CSR_CLASS_SSSTATEEN_AND_H,	/* S[ms]stateen only (with H) */
   CSR_CLASS_SSSTATEEN_AND_H_32,	/* S[ms]stateen RV32 only (with H) */
-  CSR_CLASS_SSCOFPMF,		/* Sscofpmf only */
-  CSR_CLASS_SSCOFPMF_32,	/* Sscofpmf RV32 only */
   CSR_CLASS_SSTC,		/* Sstc only */
   CSR_CLASS_SSTC_AND_H,		/* Sstc only (with H) */
   CSR_CLASS_SSTC_32,		/* Sstc RV32 only */
@@ -1077,6 +1077,12 @@ riscv_csr_address (const char *csr_name,
 		       || csr_class == CSR_CLASS_SSAIA_AND_H_32);
       extension = "ssaia";
       break;
+    case CSR_CLASS_SSCOFPMF_32:
+      is_rv32_only = true;
+      /* Fall through.  */
+    case CSR_CLASS_SSCOFPMF:
+      extension = "sscofpmf";
+      break;
     case CSR_CLASS_SSSTATEEN_AND_H_32:
       is_rv32_only = true;
       /* Fall through.  */
@@ -1086,12 +1092,6 @@ riscv_csr_address (const char *csr_name,
     case CSR_CLASS_SSSTATEEN:
       extension = "ssstateen";
       break;
-    case CSR_CLASS_SSCOFPMF_32:
-      is_rv32_only = true;
-      /* Fall through.  */
-    case CSR_CLASS_SSCOFPMF:
-      extension = "sscofpmf";
-      break;
     case CSR_CLASS_SSTC:
     case CSR_CLASS_SSTC_AND_H:
     case CSR_CLASS_SSTC_32: