(*===-- llvm_target.mli - LLVM OCaml Interface -----------------*- OCaml -*-===*
*
* 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
*
*===----------------------------------------------------------------------===*)
(** Target Information.
This interface provides an OCaml API for LLVM target information,
the classes in the Target library. *)
module Endian : sig
type t =
| Big
| Little
end
module CodeGenOptLevel : sig
type t =
| None
| Less
| Default
| Aggressive
end
module RelocMode : sig
type t =
| Default
| Static
| PIC
| DynamicNoPIC
end
module CodeModel : sig
type t =
| Default
| JITDefault
| Small
| Kernel
| Medium
| Large
end
module CodeGenFileType : sig
type t =
| AssemblyFile
| ObjectFile
end
module GlobalISelAbortMode : sig
type t =
| Enable
| Disable
| DisableWithDiag
end
(** {6 Exceptions} *)
exception Error of string
(** {6 Data Layout} *)
module DataLayout : sig
type t
(** [of_string rep] parses the data layout string representation [rep].
See the constructor [llvm::DataLayout::DataLayout]. *)
val of_string : string -> t
(** [as_string dl] is the string representation of the data layout [dl].
See the method [llvm::DataLayout::getStringRepresentation]. *)
val as_string : t -> string
(** Returns the byte order of a target, either [Endian.Big] or
[Endian.Little].
See the method [llvm::DataLayout::isLittleEndian]. *)
val byte_order : t -> Endian.t
(** Returns the pointer size in bytes for a target.
See the method [llvm::DataLayout::getPointerSize]. *)
val pointer_size : t -> int
(** Returns the integer type that is the same size as a pointer on a target.
See the method [llvm::DataLayout::getIntPtrType]. *)
val intptr_type : Llvm.llcontext -> t -> Llvm.lltype
(** Returns the pointer size in bytes for a target in a given address space.
See the method [llvm::DataLayout::getPointerSize]. *)
val qualified_pointer_size : int -> t -> int
(** Returns the integer type that is the same size as a pointer on a target
in a given address space.
See the method [llvm::DataLayout::getIntPtrType]. *)
val qualified_intptr_type : Llvm.llcontext -> int -> t -> Llvm.lltype
(** Computes the size of a type in bits for a target.
See the method [llvm::DataLayout::getTypeSizeInBits]. *)
val size_in_bits : Llvm.lltype -> t -> Int64.t
(** Computes the storage size of a type in bytes for a target.
See the method [llvm::DataLayout::getTypeStoreSize]. *)
val store_size : Llvm.lltype -> t -> Int64.t
(** Computes the ABI size of a type in bytes for a target.
See the method [llvm::DataLayout::getTypeAllocSize]. *)
val abi_size : Llvm.lltype -> t -> Int64.t
(** Computes the ABI alignment of a type in bytes for a target.
See the method [llvm::DataLayout::getTypeABISize]. *)
val abi_align : Llvm.lltype -> t -> int
(** Computes the call frame alignment of a type in bytes for a target.
See the method [llvm::DataLayout::getTypeABISize]. *)
val stack_align : Llvm.lltype -> t -> int
(** Computes the preferred alignment of a type in bytes for a target.
See the method [llvm::DataLayout::getTypeABISize]. *)
val preferred_align : Llvm.lltype -> t -> int
(** Computes the preferred alignment of a global variable in bytes for
a target. See the method [llvm::DataLayout::getPreferredAlignment]. *)
val preferred_align_of_global : Llvm.llvalue -> t -> int
(** Computes the structure element that contains the byte offset for a target.
See the method [llvm::StructLayout::getElementContainingOffset]. *)
val element_at_offset : Llvm.lltype -> Int64.t -> t -> int
(** Computes the byte offset of the indexed struct element for a target.
See the method [llvm::StructLayout::getElementContainingOffset]. *)
val offset_of_element : Llvm.lltype -> int -> t -> Int64.t
end
(** {6 Target} *)
module Target : sig
type t
(** [default_triple ()] returns the default target triple for current
platform. *)
val default_triple : unit -> string
(** [first ()] returns the first target in the registered targets
list, or [None]. *)
val first : unit -> t option
(** [succ t] returns the next target after [t], or [None]
if [t] was the last target. *)
val succ : t -> t option
(** [all ()] returns a list of known targets. *)
val all : unit -> t list
(** [by_name name] returns [Some t] if a target [t] named [name] is
registered, or [None] otherwise. *)
val by_name : string -> t option
(** [by_triple triple] returns a target for a triple [triple], or raises
[Error] if [triple] does not correspond to a registered target. *)
val by_triple : string -> t
(** Returns the name of a target. See [llvm::Target::getName]. *)
val name : t -> string
(** Returns the description of a target.
See [llvm::Target::getDescription]. *)
val description : t -> string
(** Returns [true] if the target has a JIT. *)
val has_jit : t -> bool
(** Returns [true] if the target has a target machine associated. *)
val has_target_machine : t -> bool
(** Returns [true] if the target has an ASM backend (required for
emitting output). *)
val has_asm_backend : t -> bool
end
(** {6 Target Machine} *)
module TargetMachine : sig
type t
(** Creates a new target machine.
See [llvm::Target::createTargetMachine]. *)
val create : triple:string -> ?cpu:string -> ?features:string ->
?level:CodeGenOptLevel.t -> ?reloc_mode:RelocMode.t ->
?code_model:CodeModel.t -> Target.t -> t
(** Returns the Target used in a TargetMachine *)
val target : t -> Target.t
(** Returns the triple used while creating this target machine. See
[llvm::TargetMachine::getTriple]. *)
val triple : t -> string
(** Returns the CPU used while creating this target machine. See
[llvm::TargetMachine::getCPU]. *)
val cpu : t -> string
(** Returns the data layout of this target machine. *)
val data_layout : t -> DataLayout.t
(** Returns the feature string used while creating this target machine. See
[llvm::TargetMachine::getFeatureString]. *)
val features : t -> string
(** Sets the assembly verbosity of this target machine.
See [llvm::TargetMachine::setAsmVerbosity]. *)
val set_verbose_asm : bool -> t -> unit
(** Enable fast-path instruction selection.
See [llvm::TargetMachine::setFastISel]. *)
val set_fast_isel : bool -> t -> unit
(** Enable global instruction selection.
See [llvm::TargetMachine::setGlobalISel]. *)
val set_global_isel : bool -> t -> unit
(** Set abort behaviour when global instruction selection fails to lower/select an instruction.
See [llvm::TargetMachine::setGlobalISelAbort]. *)
val set_global_isel_abort : ?mode:GlobalISelAbortMode.t -> t -> unit
(** Enable the MachineOutliner pass.
See [llvm::TargetMachine::setMachineOutliner]. *)
val set_machine_outliner : bool -> t -> unit
(** Emits assembly or object data for the given module to the given
file or raise [Error]. *)
val emit_to_file : Llvm.llmodule -> CodeGenFileType.t -> string -> t -> unit
(** Emits assembly or object data for the given module to a fresh memory
buffer or raise [Error]. *)
val emit_to_memory_buffer : Llvm.llmodule -> CodeGenFileType.t -> t ->
Llvm.llmemorybuffer
end
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