[CIR]#163601:handle function type

Author: y-Adrian

clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp

@@ -957,8 +957,7 @@ const char *vTableClassNameForType(const CIRGenModule &cgm, const Type *ty) {
 
   case Type::FunctionNoProto:
   case Type::FunctionProto:
-    cgm.errorNYI("VTableClassNameForType: __function_type_info");
-    break;
+    return "_ZTVN10__cxxabiv120__function_type_infoE";
 
   case Type::Enum:
     return "_ZTVN10__cxxabiv116__enum_type_infoE";

clang/test/CIR/CodeGen/throws.cpp

@@ -244,3 +244,55 @@ void throw_enum_class_expr() {
 // OGCG: store i32 0, ptr %[[EXCEPTION_ADDR]], align 16
 // OGCG: call void @__cxa_throw(ptr %[[EXCEPTION_ADDR]], ptr @_ZTIZ21throw_enum_class_exprvE4Test, ptr null)
 // OGCG: unreachable
+
+void throw_func_prototype_type() {
+  typedef int FuncProto(int, double);
+  FuncProto* fptr;
+  throw fptr;
+}
+
+// CIR: %[[F_ADDR:.*]] = cir.alloca !cir.ptr{{.*}}, ["fptr"]
+// CIR: %[[EXCEPTION_ADDR:.*]] = cir.alloc.exception 8 -> !cir.ptr{{.*}}
+// CIR: %[[TMP_F:.*]] = cir.load{{.*}} %[[F_ADDR]] : !cir.ptr{{.*}}, !cir.ptr{{.*}}
+// CIR: cir.store{{.*}} %[[TMP_F]], %[[EXCEPTION_ADDR]] : !cir.ptr{{.*}}, !cir.ptr{{.*}}
+// CIR: cir.throw %[[EXCEPTION_ADDR]] : !cir.ptr{{.*}}, @_ZTI{{.*}}
+// CIR: cir.unreachable
+
+// LLVM: %[[F_ADDR:.*]] = alloca ptr, i64 1, align 8
+// LLVM: %[[EXCEPTION_ADDR:.*]] = call ptr @__cxa_allocate_exception(i64 8)
+// LLVM: %[[TMP_F:.*]] = load ptr, ptr %[[F_ADDR]], align 8
+// LLVM: store ptr %[[TMP_F]], ptr %[[EXCEPTION_ADDR]], align 16
+// LLVM: call void @__cxa_throw(ptr %[[EXCEPTION_ADDR]], ptr @_ZTI{{.*}}, ptr null)
+
+// OGCG: %[[F_ADDR:.*]] = alloca ptr, align 8
+// OGCG: %[[EXCEPTION_ADDR:.*]] = call ptr @__cxa_allocate_exception(i64 8)
+// OGCG: %[[TMP_F:.*]] = load ptr, ptr %[[F_ADDR]], align 8
+// OGCG: store ptr %[[TMP_F]], ptr %[[EXCEPTION_ADDR]], align 16
+// OGCG: call void @__cxa_throw(ptr %[[EXCEPTION_ADDR]], ptr @_ZTI{{.*}}, ptr null)
+// OGCG: unreachable
+
+void throw_func_no_prototype_type() {
+  typedef void FuncNoProto();
+  FuncNoProto* fptr;
+  throw fptr;
+}
+
+// CIR: %[[FNP_ADDR:.*]] = cir.alloca !cir.ptr{{.*}}, ["fptr"]
+// CIR: %[[EXCEPTION_ADDR_FN:.*]] = cir.alloc.exception 8 -> !cir.ptr{{.*}}
+// CIR: %[[TMP_FNP:.*]] = cir.load{{.*}} %[[FNP_ADDR]] : !cir.ptr{{.*}}, !cir.ptr{{.*}}
+// CIR: cir.store{{.*}} %[[TMP_FNP]], %[[EXCEPTION_ADDR_FN]] : !cir.ptr{{.*}}, !cir.ptr{{.*}}
+// CIR: cir.throw %[[EXCEPTION_ADDR_FN]] : !cir.ptr{{.*}}, @_ZTI{{.*}}
+// CIR: cir.unreachable
+
+// LLVM: %[[FNP_ADDR:.*]] = alloca ptr, i64 1, align 8
+// LLVM: %[[EXCEPTION_ADDR_FN:.*]] = call ptr @__cxa_allocate_exception(i64 8)
+// LLVM: %[[TMP_FNP:.*]] = load ptr, ptr %[[FNP_ADDR]], align 8
+// LLVM: store ptr %[[TMP_FNP]], ptr %[[EXCEPTION_ADDR_FN]], align 16
+// LLVM: call void @__cxa_throw(ptr %[[EXCEPTION_ADDR_FN]], ptr @_ZTI{{.*}}, ptr null)
+
+// OGCG: %[[FNP_ADDR:.*]] = alloca ptr, align 8
+// OGCG: %[[EXCEPTION_ADDR_FN:.*]] = call ptr @__cxa_allocate_exception(i64 8)
+// OGCG: %[[TMP_FNP:.*]] = load ptr, ptr %[[FNP_ADDR]], align 8
+// OGCG: store ptr %[[TMP_FNP]], ptr %[[EXCEPTION_ADDR_FN]], align 16
+// OGCG: call void @__cxa_throw(ptr %[[EXCEPTION_ADDR_FN]], ptr @_ZTI{{.*}}, ptr null)
+// OGCG: unreachable