| Opaque
| Vector
| Metadata
+ | Union
end
module Linkage = struct
external struct_type : llcontext -> lltype array -> lltype = "llvm_struct_type"
external packed_struct_type : llcontext -> lltype array -> lltype
= "llvm_packed_struct_type"
-external element_types : lltype -> lltype array = "llvm_element_types"
+external struct_element_types : lltype -> lltype array
+ = "llvm_struct_element_types"
external is_packed : lltype -> bool = "llvm_is_packed"
+(*--... Operations on union types ..........................................--*)
+external union_type : llcontext -> lltype array -> lltype = "llvm_union_type"
+external union_element_types : lltype -> lltype array
+ = "llvm_union_element_types"
+
(*--... Operations on pointer, vector, and array types .....................--*)
external array_type : lltype -> int -> lltype = "llvm_array_type"
external pointer_type : lltype -> lltype = "llvm_pointer_type"
external const_packed_struct : llcontext -> llvalue array -> llvalue
= "llvm_const_packed_struct"
external const_vector : llvalue array -> llvalue = "llvm_const_vector"
+external const_union : lltype -> llvalue -> llvalue = "LLVMConstUnion"
(*--... Constant expressions ...............................................--*)
external align_of : lltype -> llvalue = "LLVMAlignOf"
| TypeKind.Pointer -> (string_of_lltype (element_type ty)) ^ "*"
| TypeKind.Struct ->
let s = "{ " ^ (concat2 ", " (
- Array.map string_of_lltype (element_types ty)
+ Array.map string_of_lltype (struct_element_types ty)
)) ^ " }" in
if is_packed ty
then "<" ^ s ^ ">"
else s
+ | TypeKind.Union -> "union { " ^ (concat2 ", " (
+ Array.map string_of_lltype (union_element_types ty)
+ )) ^ " }"
| TypeKind.Array -> "[" ^ (string_of_int (array_length ty)) ^
" x " ^ (string_of_lltype (element_type ty)) ^ "]"
| TypeKind.Vector -> "<" ^ (string_of_int (vector_size ty)) ^
| Opaque
| Vector
| Metadata
+ | Union
end
(** The linkage of a global value, accessed with {!linkage} and
external packed_struct_type : llcontext -> lltype array -> lltype
= "llvm_packed_struct_type"
-(** [element_types sty] returns the constituent types of the struct type [sty].
- See the method [llvm::StructType::getElementType]. *)
-external element_types : lltype -> lltype array = "llvm_element_types"
+(** [struct_element_types sty] returns the constituent types of the struct type
+ [sty]. See the method [llvm::StructType::getElementType]. *)
+external struct_element_types : lltype -> lltype array
+ = "llvm_struct_element_types"
(** [is_packed sty] returns [true] if the structure type [sty] is packed,
[false] otherwise. See the method [llvm::StructType::isPacked]. *)
external is_packed : lltype -> bool = "llvm_is_packed"
+(** {7 Operations on union types} *)
+
+(** [union_type context tys] returns the union type in the context [context]
+ containing the types in the array [tys]. See the method
+ [llvm::UnionType::get] *)
+external union_type : llcontext -> lltype array -> lltype = "llvm_union_type"
+
+(** [union_element_types uty] returns the constituent types of the union type
+ [uty]. See the method [llvm::UnionType::getElementType]. *)
+external union_element_types : lltype -> lltype array
+ = "llvm_union_element_types"
+
+
(** {7 Operations on pointer, vector, and array types} *)
(** [array_type ty n] returns the array type containing [n] elements of type
values [elts]. See the method [llvm::ConstantVector::get]. *)
external const_vector : llvalue array -> llvalue = "llvm_const_vector"
+(** [const_union ty v] returns the union constant of type [union_type tys] and
+ containing the value [v]. See the method [llvm::ConstantUnion::get]. *)
+external const_union : lltype -> llvalue -> llvalue = "LLVMConstUnion"
+
(** {7 Constant expressions} *)
}
/* lltype -> lltype array */
-CAMLprim value llvm_element_types(LLVMTypeRef StructTy) {
+CAMLprim value llvm_struct_element_types(LLVMTypeRef StructTy) {
value Tys = alloc(LLVMCountStructElementTypes(StructTy), 0);
LLVMGetStructElementTypes(StructTy, (LLVMTypeRef *) Tys);
return Tys;
return Val_bool(LLVMIsPackedStruct(StructTy));
}
+/*--... Operations on union types ..........................................--*/
+
+/* llcontext -> lltype array -> lltype */
+CAMLprim LLVMTypeRef llvm_union_type(LLVMContextRef C, value ElementTypes) {
+ return LLVMUnionTypeInContext(C, (LLVMTypeRef *) ElementTypes,
+ Wosize_val(ElementTypes));
+}
+
+/* lltype -> lltype array */
+CAMLprim value llvm_union_element_types(LLVMTypeRef UnionTy) {
+ value Tys = alloc(LLVMCountUnionElementTypes(UnionTy), 0);
+ LLVMGetUnionElementTypes(UnionTy, (LLVMTypeRef *) Tys);
+ return Tys;
+}
+
/*--... Operations on array, pointer, and vector types .....................--*/
/* lltype -> int -> lltype */
LLVMValueRef LLVMConstStruct(LLVMValueRef *ConstantVals, unsigned Count,
LLVMBool Packed);
LLVMValueRef LLVMConstVector(LLVMValueRef *ScalarConstantVals, unsigned Size);
+LLVMValueRef LLVMConstUnion(LLVMTypeRef Ty, LLVMValueRef Val);
/* Constant expressions */
LLVMOpcode LLVMGetConstOpcode(LLVMValueRef ConstantVal);
return LLVMConstStructInContext(LLVMGetGlobalContext(), ConstantVals, Count,
Packed);
}
-
LLVMValueRef LLVMConstVector(LLVMValueRef *ScalarConstantVals, unsigned Size) {
return wrap(ConstantVector::get(
unwrap<Constant>(ScalarConstantVals, Size), Size));
}
+LLVMValueRef LLVMConstUnion(LLVMTypeRef Ty, LLVMValueRef Val) {
+ return wrap(ConstantUnion::get(unwrap<UnionType>(Ty), unwrap<Constant>(Val)));
+}
/*--.. Constant expressions ................................................--*/
ignore (define_global "const_structure" c m);
insist ((struct_type context [| i16_type; i16_type; i32_type; i32_type |])
= (type_of c));
+
+ group "union";
+ let t = union_type context [| i1_type; i16_type; i64_type; double_type |] in
+ let c = const_union t one in
+ ignore (define_global "Const_union" c m);
+ insist (t = (type_of c));
(* RUN: grep {const_null.*zeroinit} < %t.ll
*)