/*===-- passmgr_builder_ocaml.c - LLVM OCaml Glue ---------------*- C++ -*-===*\
|*                                                                            *|
|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
|* Exceptions.                                                                *|
|* See https://llvm.org/LICENSE.txt for license information.                  *|
|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
|*                                                                            *|
|*===----------------------------------------------------------------------===*|
|*                                                                            *|
|* 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/Transforms/PassManagerBuilder.h"
#include "caml/mlvalues.h"
#include "caml/custom.h"
#include "caml/misc.h"

#define PMBuilder_val(v) (*(LLVMPassManagerBuilderRef *)(Data_custom_val(v)))

static void llvm_finalize_pmbuilder(value PMB) {
  LLVMPassManagerBuilderDispose(PMBuilder_val(PMB));
}

static struct custom_operations pmbuilder_ops = {
    (char *)"Llvm_passmgr_builder.t", llvm_finalize_pmbuilder,
    custom_compare_default,           custom_hash_default,
    custom_serialize_default,         custom_deserialize_default,
    custom_compare_ext_default};

static value alloc_pmbuilder(LLVMPassManagerBuilderRef Ref) {
  value Val =
      alloc_custom(&pmbuilder_ops, sizeof(LLVMPassManagerBuilderRef), 0, 1);
  PMBuilder_val(Val) = Ref;
  return Val;
}

/* t -> unit */
value llvm_pmbuilder_create(value Unit) {
  return alloc_pmbuilder(LLVMPassManagerBuilderCreate());
}

/* int -> t -> unit */
value llvm_pmbuilder_set_opt_level(value OptLevel, value PMB) {
  LLVMPassManagerBuilderSetOptLevel(PMBuilder_val(PMB), Int_val(OptLevel));
  return Val_unit;
}

/* int -> t -> unit */
value llvm_pmbuilder_set_size_level(value SizeLevel, value PMB) {
  LLVMPassManagerBuilderSetSizeLevel(PMBuilder_val(PMB), Int_val(SizeLevel));
  return Val_unit;
}

/* int -> t -> unit */
value llvm_pmbuilder_use_inliner_with_threshold(value Threshold, value PMB) {
  LLVMPassManagerBuilderSetOptLevel(PMBuilder_val(PMB), Int_val(Threshold));
  return Val_unit;
}

/* bool -> t -> unit */
value llvm_pmbuilder_set_disable_unit_at_a_time(value DisableUnitAtATime,
                                                value PMB) {
  LLVMPassManagerBuilderSetDisableUnitAtATime(PMBuilder_val(PMB),
                                              Bool_val(DisableUnitAtATime));
  return Val_unit;
}

/* bool -> t -> unit */
value llvm_pmbuilder_set_disable_unroll_loops(value DisableUnroll, value PMB) {
  LLVMPassManagerBuilderSetDisableUnrollLoops(PMBuilder_val(PMB),
                                              Bool_val(DisableUnroll));
  return Val_unit;
}

/* [ `Function ] Llvm.PassManager.t -> t -> unit */
value llvm_pmbuilder_populate_function_pass_manager(LLVMPassManagerRef PM,
                                                    value PMB) {
  LLVMPassManagerBuilderPopulateFunctionPassManager(PMBuilder_val(PMB), PM);
  return Val_unit;
}

/* [ `Module ] Llvm.PassManager.t -> t -> unit */
value llvm_pmbuilder_populate_module_pass_manager(LLVMPassManagerRef PM,
                                                  value PMB) {
  LLVMPassManagerBuilderPopulateModulePassManager(PMBuilder_val(PMB), PM);
  return Val_unit;
}