[OCaml] Add Llvm.{string_of_const,const_element}.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214677 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 25 insertions, 0 deletions

diff --git a/bindings/ocaml/llvm/llvm_ocaml.c b/bindings/ocaml/llvm/llvm_ocaml.c
index 2044856ef2d..3ec76835696 100644
--- a/bindings/ocaml/llvm/llvm_ocaml.c
+++ b/bindings/ocaml/llvm/llvm_ocaml.c
@@ -782,6 +782,31 @@ CAMLprim LLVMValueRef llvm_const_vector(value ElementVals) {
                          Wosize_val(ElementVals));
 }
 
+/* llvalue -> string option */
+CAMLprim value llvm_string_of_const(LLVMValueRef Const) {
+  const char *S;
+  size_t Len;
+  CAMLparam0();
+  CAMLlocal2(Option, Str);
+
+  if(LLVMIsAConstantDataSequential(Const) && LLVMIsConstantString(Const)) {
+    S = LLVMGetAsString(Const, &Len);
+    Str = caml_alloc_string(Len);
+    memcpy(String_val(Str), S, Len);
+
+    Option = alloc(1, 0);
+    Field(Option, 0) = Str;
+    CAMLreturn(Option);
+  } else {
+    CAMLreturn(Val_int(0));
+  }
+}
+
+/* llvalue -> int -> llvalue */
+CAMLprim LLVMValueRef llvm_const_element(LLVMValueRef Const, value N) {
+  return LLVMGetElementAsConstant(Const, Int_val(N));
+}
+
 /*--... Constant expressions ...............................................--*/
 
 /* Icmp.t -> llvalue -> llvalue -> llvalue */