Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/bindings/ocaml/linker/CMakeLists.txt

@@ -0,0 +1,5 @@
+add_ocaml_library(llvm_linker
+  OCAML    llvm_linker
+  OCAMLDEP llvm
+  C        linker_ocaml
+  LLVM     linker)

external/llvm/bindings/ocaml/linker/linker_ocaml.c

@@ -0,0 +1,33 @@
+/*===-- linker_ocaml.c - LLVM OCaml Glue ------------------------*- C++ -*-===*\
+|*                                                                            *|
+|*                     The LLVM Compiler Infrastructure                       *|
+|*                                                                            *|
+|* This file is distributed under the University of Illinois Open Source      *|
+|* License. See LICENSE.TXT for details.                                      *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This file glues LLVM's OCaml interface to its C interface. These functions *|
+|* are by and large transparent wrappers to the corresponding C functions.    *|
+|*                                                                            *|
+|* Note that these functions intentionally take liberties with the CAMLparamX *|
+|* macros, since most of the parameters are not GC heap objects.              *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#include "llvm-c/Core.h"
+#include "llvm-c/Linker.h"
+#include "caml/alloc.h"
+#include "caml/memory.h"
+#include "caml/fail.h"
+#include "caml/callback.h"
+
+void llvm_raise(value Prototype, char *Message);
+
+/* llmodule -> llmodule -> unit */
+CAMLprim value llvm_link_modules(LLVMModuleRef Dst, LLVMModuleRef Src) {
+  if (LLVMLinkModules2(Dst, Src))
+    llvm_raise(*caml_named_value("Llvm_linker.Error"), LLVMCreateMessage("Linking failed"));
+
+  return Val_unit;
+}

external/llvm/bindings/ocaml/linker/llvm_linker.ml

@@ -0,0 +1,15 @@
+(*===-- llvm_linker.ml - LLVM OCaml Interface ------------------*- OCaml -*-===*
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ *===----------------------------------------------------------------------===*)
+
+exception Error of string
+
+let () = Callback.register_exception "Llvm_linker.Error" (Error "")
+
+external link_modules' : Llvm.llmodule -> Llvm.llmodule -> unit
+                       = "llvm_link_modules"

external/llvm/bindings/ocaml/linker/llvm_linker.mli

@@ -0,0 +1,19 @@
+(*===-- llvm_linker.mli - LLVM OCaml Interface -----------------*- OCaml -*-===*
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ *===----------------------------------------------------------------------===*)
+
+(** Linker.
+
+    This interface provides an OCaml API for LLVM bitcode linker,
+    the classes in the Linker library. *)
+
+exception Error of string
+
+(** [link_modules' dst src] links [src] into [dst], raising [Error]
+    if the linking fails. The src module is destroyed. *)
+val link_modules' : Llvm.llmodule -> Llvm.llmodule -> unit