Refine clang-format style

AttributeMacros: A vector of strings that should be interpreted as
attributes/qualifiers instead of identifiers.

StatementAttributeLikeMacros: Macros which are ignored in front of
a statement, as if they were an attribute.

StatementMacros: Typical macros are expressions, and require a
semi-colon to be added; sometimes this is not the case, and this
allows to make clang-format aware of such cases.

Author: jserv

.clang-format

@@ -17,3 +17,13 @@ ForEachMacros:
   - list_for_each_entry
   - list_for_each_entry_safe
   - hlist_for_each_entry
+AttributeMacros:
+  - UNUSED
+  - __ALIGNED
+  - PACKED
+  - MUST_TAIL
+  - FORCE_INLINE
+StatementAttributeLikeMacros:
+  - IIF
+StatementMacros:
+  - __UNREACHABLE

src/emulate.c

@@ -548,7 +548,8 @@ FORCE_INLINE bool insn_is_branch(uint8_t opcode)
 {
     switch (opcode) {
 #define _(inst, can_branch, insn_len, translatable, reg_mask) \
-    IIF(can_branch)(case rv_insn_##inst:, )
+    IIF(can_branch)                                           \
+    (case rv_insn_##inst:, )
         RV_INSN_LIST
 #undef _
         return true;
@@ -561,7 +562,8 @@ FORCE_INLINE bool insn_is_translatable(uint8_t opcode)
 {
     switch (opcode) {
 #define _(inst, can_branch, insn_len, translatable, reg_mask) \
-    IIF(translatable)(case rv_insn_##inst:, )
+    IIF(translatable)                                         \
+    (case rv_insn_##inst:, )
         RV_INSN_LIST
 #undef _
         return true;