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[OCaml] Add functions for accessing metadata nodes.

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Patch by Xinyu Zhuang.

Differential Revision: http://reviews.llvm.org/D19309

llvm-svn: 273370
This commit is contained in:
Peter Zotov 2016-06-22 03:30:24 +00:00
parent 7a6ec86fcc
commit ee462ca194
4 changed files with 18 additions and 0 deletions
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2
llvm/bindings/ocaml/llvm/llvm.ml
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@ -483,6 +483,8 @@ external mdstring : llcontext -> string -> llvalue = "llvm_mdstring"
external mdnode : llcontext -> llvalue array -> llvalue = "llvm_mdnode"
external mdnull : llcontext -> llvalue = "llvm_mdnull"
external get_mdstring : llvalue -> string option = "llvm_get_mdstring"
external get_mdnode_operands : llvalue -> llvalue array
= "llvm_get_mdnode_operands"
external get_named_metadata : llmodule -> string -> llvalue array
= "llvm_get_namedmd"
external add_named_metadata_operand : llmodule -> string -> llvalue -> unit

4
llvm/bindings/ocaml/llvm/llvm.mli
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@ -852,6 +852,10 @@ val mdnull : llcontext -> llvalue
See the method [llvm::MDString::getString] *)
val get_mdstring : llvalue -> string option
(** [get_mdnode_operands v] returns the operands in the MDNode. *)
(* See the method [llvm::MDNode::getOperand] *)
val get_mdnode_operands : llvalue -> llvalue array
(** [get_named_metadata m name] returns all the MDNodes belonging to the named
metadata (if any).
See the method [llvm::NamedMDNode::getOperand]. *)

11
llvm/bindings/ocaml/llvm/llvm_ocaml.c
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@ -734,6 +734,17 @@ CAMLprim value llvm_get_mdstring(LLVMValueRef V) {
CAMLreturn(Val_int(0));
}
CAMLprim value llvm_get_mdnode_operands(LLVMValueRef V) {
CAMLparam0();
CAMLlocal1(Operands);
unsigned int n;
n = LLVMGetMDNodeNumOperands(V);
Operands = alloc(n, 0);
LLVMGetMDNodeOperands(V, (LLVMValueRef *) Operands);
CAMLreturn(Operands);
}
/* llmodule -> string -> llvalue array */
CAMLprim value llvm_get_namedmd(LLVMModuleRef M, value Name)
{

1
llvm/test/Bindings/OCaml/core.ml
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@ -1122,6 +1122,7 @@ let test_builder () =
insist ((has_metadata i) = true);
insist ((metadata i kind) = Some md);
insist ((get_mdnode_operands md) = [| m1; m2 |]);
clear_metadata i kind;