30f423a543
The OCaml bindings currently return pointers to LLVM objects as-is to OCaml. These "naked pointers" end up appearing as values of local variables in OCaml code, stored as part of other OCaml values, etc. The safety of this design relies on the OCaml runtime system's ability to distinguish these pointers from pointers to memory on the OCaml garbage collected heap. In particular, when the OCaml GC encounters a pointer to memory known to not be part of the OCaml heap, it does not follow it. In OCaml 4.02 an optimized "no naked pointers" mode was introduced where the runtime system does not perform such checks and requires that no such naked pointers be passed to OCaml code, instead one of several encodings needs to be used. In OCaml 5, the no naked pointers mode is now the only mode. This diff uses one of the potential encodings to eliminate naked pointers, making the LLVM OCaml bindings compatible with the "no naked pointers" mode of OCaml >= 4.02 and 5. The encoding implemented in this diff relies on LLVM objects to be at least 2-byte aligned, meaning that the lsb of pointers will necessarily be clear. The encoding sets the lsb when passing LLVM pointers to OCaml, and clears it on the return path. Setting the lsb causes the OCaml runtime system to interpret the resulting value as a tagged integer, which does not participate in garbage collection. In some cases, particularly functions that receive an OCaml array of LLVM pointers, this encoding requires allocation of a temporary array, but otherwise this diff aims to preserve the existing performance characteristics of the OCaml bindings. Reviewed By: jberdine Differential Revision: https://reviews.llvm.org/D136400
620 lines
17 KiB
OCaml
620 lines
17 KiB
OCaml
(*===-- llvm_debuginfo.ml - LLVM OCaml Interface --------------*- OCaml -*-===*
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===----------------------------------------------------------------------===*)
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type lldibuilder
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(** Source languages known by DWARF. *)
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module DWARFSourceLanguageKind = struct
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type t =
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| C89
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| C
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| Ada83
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| C_plus_plus
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| Cobol74
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| Cobol85
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| Fortran77
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| Fortran90
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| Pascal83
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| Modula2
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(* New in DWARF v3: *)
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| LLVMJava
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| C99
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| Ada95
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| Fortran95
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| PLI
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| ObjC
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| ObjC_plus_plus
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| UPC
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| D
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(* New in DWARF v4: *)
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| LLVMPython
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(* New in DWARF v5: *)
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| LLVMOpenCL
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| Go
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| Modula3
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| Haskell
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| C_plus_plus_03
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| C_plus_plus_11
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| OCaml
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| Rust
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| C11
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| Swift
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| Julia
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| Dylan
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| C_plus_plus_14
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| Fortran03
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| Fortran08
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| RenderScript
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| BLISS
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(* Vendor extensions: *)
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| LLVMMips_Assembler
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| GOOGLE_RenderScript
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| BORLAND_Delphi
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end
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module DIFlag = struct
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type t =
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| Zero
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| Private
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| Protected
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| Public
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| FwdDecl
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| AppleBlock
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| ReservedBit4
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| Virtual
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| Artificial
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| Explicit
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| Prototyped
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| ObjcClassComplete
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| ObjectPointer
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| Vector
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| StaticMember
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| LValueReference
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| RValueReference
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| Reserved
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| SingleInheritance
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| MultipleInheritance
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| VirtualInheritance
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| IntroducedVirtual
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| BitField
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| NoReturn
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| TypePassByValue
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| TypePassByReference
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| EnumClass
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| FixedEnum
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| Thunk
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| NonTrivial
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| BigEndian
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| LittleEndian
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| IndirectVirtualBase
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| Accessibility
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| PtrToMemberRep
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end
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type lldiflags
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external diflags_get : DIFlag.t -> lldiflags = "llvm_diflags_get"
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external diflags_set : lldiflags -> DIFlag.t -> lldiflags = "llvm_diflags_set"
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external diflags_test : lldiflags -> DIFlag.t -> bool = "llvm_diflags_test"
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(** The kind of metadata nodes. *)
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module MetadataKind = struct
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type t =
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| MDStringMetadataKind
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| ConstantAsMetadataMetadataKind
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| LocalAsMetadataMetadataKind
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| DistinctMDOperandPlaceholderMetadataKind
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| MDTupleMetadataKind
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| DILocationMetadataKind
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| DIExpressionMetadataKind
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| DIGlobalVariableExpressionMetadataKind
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| GenericDINodeMetadataKind
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| DISubrangeMetadataKind
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| DIEnumeratorMetadataKind
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| DIBasicTypeMetadataKind
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| DIDerivedTypeMetadataKind
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| DICompositeTypeMetadataKind
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| DISubroutineTypeMetadataKind
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| DIFileMetadataKind
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| DICompileUnitMetadataKind
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| DISubprogramMetadataKind
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| DILexicalBlockMetadataKind
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| DILexicalBlockFileMetadataKind
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| DINamespaceMetadataKind
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| DIModuleMetadataKind
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| DITemplateTypeParameterMetadataKind
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| DITemplateValueParameterMetadataKind
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| DIGlobalVariableMetadataKind
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| DILocalVariableMetadataKind
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| DILabelMetadataKind
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| DIObjCPropertyMetadataKind
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| DIImportedEntityMetadataKind
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| DIMacroMetadataKind
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| DIMacroFileMetadataKind
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| DICommonBlockMetadataKind
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end
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(** The amount of debug information to emit. *)
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module DWARFEmissionKind = struct
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type t = None | Full | LineTablesOnly
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end
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external debug_metadata_version : unit -> int = "llvm_debug_metadata_version"
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external get_module_debug_metadata_version : Llvm.llmodule -> int
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= "llvm_get_module_debug_metadata_version"
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external dibuilder : Llvm.llmodule -> lldibuilder = "llvm_dibuilder"
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external dibuild_finalize : lldibuilder -> unit = "llvm_dibuild_finalize"
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(* See LLVMDIBuilderCreateCompileUnit for argument details. *)
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external dibuild_create_compile_unit :
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lldibuilder ->
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DWARFSourceLanguageKind.t ->
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file_ref:Llvm.llmetadata ->
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producer:string ->
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is_optimized:bool ->
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flags:string ->
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runtime_ver:int ->
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split_name:string ->
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DWARFEmissionKind.t ->
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dwoid:int ->
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di_inlining:bool ->
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di_profiling:bool ->
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sys_root:string ->
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sdk:string ->
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Llvm.llmetadata
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= "llvm_dibuild_create_compile_unit_bytecode" "llvm_dibuild_create_compile_unit_native"
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external dibuild_create_file :
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lldibuilder -> filename:string -> directory:string -> Llvm.llmetadata
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= "llvm_dibuild_create_file"
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external dibuild_create_module :
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lldibuilder ->
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parent_ref:Llvm.llmetadata ->
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name:string ->
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config_macros:string ->
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include_path:string ->
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sys_root:string ->
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Llvm.llmetadata
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= "llvm_dibuild_create_module_bytecode" "llvm_dibuild_create_module_native"
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external dibuild_create_namespace :
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lldibuilder ->
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parent_ref:Llvm.llmetadata ->
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name:string ->
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export_symbols:bool ->
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Llvm.llmetadata = "llvm_dibuild_create_namespace"
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external dibuild_create_function :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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linkage_name:string ->
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file:Llvm.llmetadata ->
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line_no:int ->
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ty:Llvm.llmetadata ->
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is_local_to_unit:bool ->
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is_definition:bool ->
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scope_line:int ->
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flags:lldiflags ->
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is_optimized:bool ->
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Llvm.llmetadata
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= "llvm_dibuild_create_function_bytecode" "llvm_dibuild_create_function_native"
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external dibuild_create_lexical_block :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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file:Llvm.llmetadata ->
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line:int ->
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column:int ->
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Llvm.llmetadata = "llvm_dibuild_create_lexical_block"
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external dibuild_create_debug_location_helper :
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Llvm.llcontext ->
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line:int ->
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column:int ->
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scope:Llvm.llmetadata ->
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inlined_at:Llvm.llmetadata ->
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Llvm.llmetadata = "llvm_dibuild_create_debug_location"
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external llmetadata_null : unit -> Llvm.llmetadata = "llvm_metadata_null"
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let dibuild_create_debug_location ?(inlined_at = llmetadata_null ()) llctx ~line
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~column ~scope =
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dibuild_create_debug_location_helper llctx ~line ~column ~scope ~inlined_at
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external di_location_get_line : location:Llvm.llmetadata -> int
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= "llvm_di_location_get_line"
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external di_location_get_column : location:Llvm.llmetadata -> int
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= "llvm_di_location_get_column"
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external di_location_get_scope : location:Llvm.llmetadata -> Llvm.llmetadata
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= "llvm_di_location_get_scope"
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external di_location_get_inlined_at :
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location:Llvm.llmetadata -> Llvm.llmetadata option
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= "llvm_di_location_get_inlined_at"
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external di_scope_get_file : scope:Llvm.llmetadata -> Llvm.llmetadata option
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= "llvm_di_scope_get_file"
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external di_file_get_directory : file:Llvm.llmetadata -> string
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= "llvm_di_file_get_directory"
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external di_file_get_filename : file:Llvm.llmetadata -> string
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= "llvm_di_file_get_filename"
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external di_file_get_source : file:Llvm.llmetadata -> string
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= "llvm_di_file_get_source"
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external dibuild_get_or_create_type_array :
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lldibuilder -> data:Llvm.llmetadata array -> Llvm.llmetadata
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= "llvm_dibuild_get_or_create_type_array"
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external dibuild_get_or_create_array :
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lldibuilder -> data:Llvm.llmetadata array -> Llvm.llmetadata
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= "llvm_dibuild_get_or_create_array"
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external dibuild_create_subroutine_type :
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lldibuilder ->
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file:Llvm.llmetadata ->
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param_types:Llvm.llmetadata array ->
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lldiflags ->
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Llvm.llmetadata = "llvm_dibuild_create_subroutine_type"
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external dibuild_create_enumerator :
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lldibuilder -> name:string -> value:int -> is_unsigned:bool -> Llvm.llmetadata
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= "llvm_dibuild_create_enumerator"
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external dibuild_create_enumeration_type :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_number:int ->
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size_in_bits:int ->
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align_in_bits:int ->
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elements:Llvm.llmetadata array ->
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class_ty:Llvm.llmetadata ->
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Llvm.llmetadata
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= "llvm_dibuild_create_enumeration_type_bytecode" "llvm_dibuild_create_enumeration_type_native"
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external dibuild_create_union_type :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_number:int ->
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size_in_bits:int ->
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align_in_bits:int ->
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lldiflags ->
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elements:Llvm.llmetadata array ->
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run_time_language:int ->
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unique_id:string ->
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Llvm.llmetadata
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= "llvm_dibuild_create_union_type_bytecode" "llvm_dibuild_create_union_type_native"
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external dibuild_create_array_type :
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lldibuilder ->
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size:int ->
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align_in_bits:int ->
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ty:Llvm.llmetadata ->
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subscripts:Llvm.llmetadata array ->
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Llvm.llmetadata = "llvm_dibuild_create_array_type"
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external dibuild_create_vector_type :
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lldibuilder ->
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size:int ->
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align_in_bits:int ->
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ty:Llvm.llmetadata ->
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subscripts:Llvm.llmetadata array ->
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Llvm.llmetadata = "llvm_dibuild_create_array_type"
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external dibuild_create_unspecified_type :
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lldibuilder -> name:string -> Llvm.llmetadata
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= "llvm_dibuild_create_unspecified_type"
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external dibuild_create_basic_type :
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lldibuilder ->
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name:string ->
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size_in_bits:int ->
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encoding:int ->
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lldiflags ->
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Llvm.llmetadata = "llvm_dibuild_create_basic_type"
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external dibuild_create_pointer_type :
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lldibuilder ->
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pointee_ty:Llvm.llmetadata ->
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size_in_bits:int ->
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align_in_bits:int ->
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address_space:int ->
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name:string ->
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Llvm.llmetadata
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= "llvm_dibuild_create_pointer_type_bytecode" "llvm_dibuild_create_pointer_type_native"
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external dibuild_create_struct_type :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_number:int ->
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size_in_bits:int ->
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align_in_bits:int ->
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lldiflags ->
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derived_from:Llvm.llmetadata ->
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elements:Llvm.llmetadata array ->
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DWARFSourceLanguageKind.t ->
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vtable_holder:Llvm.llmetadata ->
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unique_id:string ->
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Llvm.llmetadata
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= "llvm_dibuild_create_struct_type_bytecode" "llvm_dibuild_create_struct_type_native"
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external dibuild_create_member_type :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_number:int ->
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size_in_bits:int ->
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align_in_bits:int ->
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offset_in_bits:int ->
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lldiflags ->
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ty:Llvm.llmetadata ->
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Llvm.llmetadata
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= "llvm_dibuild_create_member_type_bytecode" "llvm_dibuild_create_member_type_native"
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external dibuild_create_static_member_type :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_number:int ->
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ty:Llvm.llmetadata ->
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lldiflags ->
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const_val:Llvm.llvalue ->
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align_in_bits:int ->
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Llvm.llmetadata
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= "llvm_dibuild_create_static_member_type_bytecode" "llvm_dibuild_create_static_member_type_native"
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external dibuild_create_member_pointer_type :
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lldibuilder ->
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pointee_type:Llvm.llmetadata ->
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class_type:Llvm.llmetadata ->
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size_in_bits:int ->
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align_in_bits:int ->
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lldiflags ->
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Llvm.llmetadata
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= "llvm_dibuild_create_member_pointer_type_bytecode" "llvm_dibuild_create_member_pointer_type_native"
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external dibuild_create_object_pointer_type :
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lldibuilder -> Llvm.llmetadata -> Llvm.llmetadata
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= "llvm_dibuild_create_object_pointer_type"
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external dibuild_create_qualified_type :
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lldibuilder -> tag:int -> Llvm.llmetadata -> Llvm.llmetadata
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= "llvm_dibuild_create_qualified_type"
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external dibuild_create_reference_type :
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lldibuilder -> tag:int -> Llvm.llmetadata -> Llvm.llmetadata
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= "llvm_dibuild_create_reference_type"
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external dibuild_create_null_ptr_type : lldibuilder -> Llvm.llmetadata
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= "llvm_dibuild_create_null_ptr_type"
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external dibuild_create_typedef :
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lldibuilder ->
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ty:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_no:int ->
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scope:Llvm.llmetadata ->
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align_in_bits:int ->
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Llvm.llmetadata
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= "llvm_dibuild_create_typedef_bytecode" "llvm_dibuild_create_typedef_native"
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external dibuild_create_inheritance :
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lldibuilder ->
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ty:Llvm.llmetadata ->
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base_ty:Llvm.llmetadata ->
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base_offset:int ->
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vb_ptr_offset:int ->
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lldiflags ->
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Llvm.llmetadata
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= "llvm_dibuild_create_inheritance_bytecode" "llvm_dibuild_create_inheritance_native"
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external dibuild_create_forward_decl :
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lldibuilder ->
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tag:int ->
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name:string ->
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scope:Llvm.llmetadata ->
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file:Llvm.llmetadata ->
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line:int ->
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runtime_lang:int ->
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size_in_bits:int ->
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align_in_bits:int ->
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unique_identifier:string ->
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Llvm.llmetadata
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= "llvm_dibuild_create_forward_decl_bytecode" "llvm_dibuild_create_forward_decl_native"
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external dibuild_create_replaceable_composite_type :
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lldibuilder ->
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tag:int ->
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name:string ->
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scope:Llvm.llmetadata ->
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file:Llvm.llmetadata ->
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line:int ->
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runtime_lang:int ->
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size_in_bits:int ->
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align_in_bits:int ->
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lldiflags ->
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unique_identifier:string ->
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Llvm.llmetadata
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= "llvm_dibuild_create_replaceable_composite_type_bytecode" "llvm_dibuild_create_replaceable_composite_type_native"
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external dibuild_create_bit_field_member_type :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_num:int ->
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size_in_bits:int ->
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offset_in_bits:int ->
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storage_offset_in_bits:int ->
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lldiflags ->
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ty:Llvm.llmetadata ->
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Llvm.llmetadata
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= "llvm_dibuild_create_bit_field_member_type_bytecode" "llvm_dibuild_create_bit_field_member_type_native"
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external dibuild_create_class_type :
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lldibuilder ->
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scope:Llvm.llmetadata ->
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name:string ->
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file:Llvm.llmetadata ->
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line_number:int ->
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size_in_bits:int ->
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align_in_bits:int ->
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offset_in_bits:int ->
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lldiflags ->
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derived_from:Llvm.llmetadata ->
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elements:Llvm.llmetadata array ->
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vtable_holder:Llvm.llmetadata ->
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template_params_node:Llvm.llmetadata ->
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unique_identifier:string ->
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|
Llvm.llmetadata
|
|
= "llvm_dibuild_create_class_type_bytecode" "llvm_dibuild_create_class_type_native"
|
|
|
|
external dibuild_create_artificial_type :
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|
lldibuilder -> ty:Llvm.llmetadata -> Llvm.llmetadata
|
|
= "llvm_dibuild_create_artificial_type"
|
|
|
|
external di_type_get_name : Llvm.llmetadata -> string = "llvm_di_type_get_name"
|
|
|
|
external di_type_get_size_in_bits : Llvm.llmetadata -> int
|
|
= "llvm_di_type_get_size_in_bits"
|
|
|
|
external di_type_get_offset_in_bits : Llvm.llmetadata -> int
|
|
= "llvm_di_type_get_offset_in_bits"
|
|
|
|
external di_type_get_align_in_bits : Llvm.llmetadata -> int
|
|
= "llvm_di_type_get_align_in_bits"
|
|
|
|
external di_type_get_line : Llvm.llmetadata -> int = "llvm_di_type_get_line"
|
|
|
|
external di_type_get_flags : Llvm.llmetadata -> lldiflags
|
|
= "llvm_di_type_get_flags"
|
|
|
|
external get_subprogram : Llvm.llvalue -> Llvm.llmetadata option
|
|
= "llvm_get_subprogram"
|
|
|
|
external set_subprogram : Llvm.llvalue -> Llvm.llmetadata -> unit
|
|
= "llvm_set_subprogram"
|
|
|
|
external di_subprogram_get_line : Llvm.llmetadata -> int
|
|
= "llvm_di_subprogram_get_line"
|
|
|
|
external instr_get_debug_loc : Llvm.llvalue -> Llvm.llmetadata option
|
|
= "llvm_instr_get_debug_loc"
|
|
|
|
external instr_set_debug_loc_helper : Llvm.llvalue -> Llvm.llmetadata -> unit
|
|
= "llvm_instr_set_debug_loc"
|
|
|
|
let instr_set_debug_loc i mopt =
|
|
match mopt with
|
|
| None -> instr_set_debug_loc_helper i (llmetadata_null ())
|
|
| Some m -> instr_set_debug_loc_helper i m
|
|
|
|
external dibuild_create_constant_value_expression :
|
|
lldibuilder -> int -> Llvm.llmetadata
|
|
= "llvm_dibuild_create_constant_value_expression"
|
|
|
|
external dibuild_create_global_variable_expression :
|
|
lldibuilder ->
|
|
scope:Llvm.llmetadata ->
|
|
name:string ->
|
|
linkage:string ->
|
|
file:Llvm.llmetadata ->
|
|
line:int ->
|
|
ty:Llvm.llmetadata ->
|
|
is_local_to_unit:bool ->
|
|
expr:Llvm.llmetadata ->
|
|
decl:Llvm.llmetadata ->
|
|
align_in_bits:int ->
|
|
Llvm.llmetadata
|
|
= "llvm_dibuild_create_global_variable_expression_bytecode" "llvm_dibuild_create_global_variable_expression_native"
|
|
|
|
external di_global_variable_expression_get_variable :
|
|
Llvm.llmetadata -> Llvm.llmetadata option
|
|
= "llvm_di_global_variable_expression_get_variable"
|
|
|
|
external di_variable_get_line : Llvm.llmetadata -> int
|
|
= "llvm_di_variable_get_line"
|
|
|
|
external di_variable_get_file : Llvm.llmetadata -> Llvm.llmetadata option
|
|
= "llvm_di_variable_get_file"
|
|
|
|
external get_metadata_kind : Llvm.llmetadata -> MetadataKind.t
|
|
= "llvm_get_metadata_kind"
|
|
|
|
external dibuild_create_auto_variable :
|
|
lldibuilder ->
|
|
scope:Llvm.llmetadata ->
|
|
name:string ->
|
|
file:Llvm.llmetadata ->
|
|
line:int ->
|
|
ty:Llvm.llmetadata ->
|
|
always_preserve:bool ->
|
|
lldiflags ->
|
|
align_in_bits:int ->
|
|
Llvm.llmetadata
|
|
= "llvm_dibuild_create_auto_variable_bytecode" "llvm_dibuild_create_auto_variable_native"
|
|
|
|
external dibuild_create_parameter_variable :
|
|
lldibuilder ->
|
|
scope:Llvm.llmetadata ->
|
|
name:string ->
|
|
argno:int ->
|
|
file:Llvm.llmetadata ->
|
|
line:int ->
|
|
ty:Llvm.llmetadata ->
|
|
always_preserve:bool ->
|
|
lldiflags ->
|
|
Llvm.llmetadata
|
|
= "llvm_dibuild_create_parameter_variable_bytecode" "llvm_dibuild_create_parameter_variable_native"
|
|
|
|
external dibuild_insert_declare_before :
|
|
lldibuilder ->
|
|
storage:Llvm.llvalue ->
|
|
var_info:Llvm.llmetadata ->
|
|
expr:Llvm.llmetadata ->
|
|
location:Llvm.llmetadata ->
|
|
instr:Llvm.llvalue ->
|
|
Llvm.llvalue
|
|
= "llvm_dibuild_insert_declare_before_bytecode" "llvm_dibuild_insert_declare_before_native"
|
|
|
|
external dibuild_insert_declare_at_end :
|
|
lldibuilder ->
|
|
storage:Llvm.llvalue ->
|
|
var_info:Llvm.llmetadata ->
|
|
expr:Llvm.llmetadata ->
|
|
location:Llvm.llmetadata ->
|
|
block:Llvm.llbasicblock ->
|
|
Llvm.llvalue
|
|
= "llvm_dibuild_insert_declare_at_end_bytecode" "llvm_dibuild_insert_declare_at_end_native"
|
|
|
|
external dibuild_expression :
|
|
lldibuilder ->
|
|
Int64.t array ->
|
|
Llvm.llmetadata
|
|
= "llvm_dibuild_expression"
|