[llvm] r224782 - Finish removing DestroySource.

Sean Silva chisophugis at gmail.com
Tue Feb 24 16:04:35 PST 2015


Yeah, we should not be breaking the API.

Hans, we should definitely include the resolution to this in the branch.

-- Sean Silva

On Tue, Feb 24, 2015 at 3:39 PM, Filip Pizlo <fpizlo at apple.com> wrote:

> This change breaks the WebKit build.
>
> The removal of the LLVMLinkerMode type from the C API violates the
> principle of C API stability.  The latest release of LLVM has this type,
> which makes it subject to the usual API stability rules.
>
> What do you recommend we do?  Maybe just bringing back the enum is
> sufficient.
>
> -Filip
>
>
> > On Dec 23, 2014, at 11:16 AM, Rafael Espindola <
> rafael.espindola at gmail.com> wrote:
> >
> > Author: rafael
> > Date: Tue Dec 23 13:16:45 2014
> > New Revision: 224782
> >
> > URL: http://llvm.org/viewvc/llvm-project?rev=224782&view=rev
> > Log:
> > Finish removing DestroySource.
> >
> > Fixes pr21901.
> >
> > Modified:
> >    llvm/trunk/bindings/go/llvm/linker.go
> >    llvm/trunk/bindings/ocaml/linker/linker_ocaml.c
> >    llvm/trunk/bindings/ocaml/linker/llvm_linker.ml
> >    llvm/trunk/bindings/ocaml/linker/llvm_linker.mli
> >    llvm/trunk/include/llvm-c/Linker.h
> >    llvm/trunk/lib/Linker/LinkModules.cpp
> >    llvm/trunk/test/Bindings/OCaml/linker.ml
> >
> > Modified: llvm/trunk/bindings/go/llvm/linker.go
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/bindings/go/llvm/linker.go?rev=224782&r1=224781&r2=224782&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/bindings/go/llvm/linker.go (original)
> > +++ llvm/trunk/bindings/go/llvm/linker.go Tue Dec 23 13:16:45 2014
> > @@ -20,16 +20,9 @@ package llvm
> > import "C"
> > import "errors"
> >
> > -type LinkerMode C.LLVMLinkerMode
> > -
> > -const (
> > -     LinkerDestroySource  = C.LLVMLinkerDestroySource
> > -     LinkerPreserveSource = C.LLVMLinkerPreserveSource
> > -)
> > -
> > -func LinkModules(Dest, Src Module, Mode LinkerMode) error {
> > +func LinkModules(Dest, Src Module) error {
> >       var cmsg *C.char
> > -     failed := C.LLVMLinkModules(Dest.C, Src.C, C.LLVMLinkerMode(Mode),
> &cmsg)
> > +     failed := C.LLVMLinkModules(Dest.C, Src.C, 0, &cmsg)
> >       if failed != 0 {
> >               err := errors.New(C.GoString(cmsg))
> >               C.LLVMDisposeMessage(cmsg)
> >
> > Modified: llvm/trunk/bindings/ocaml/linker/linker_ocaml.c
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/bindings/ocaml/linker/linker_ocaml.c?rev=224782&r1=224781&r2=224782&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/bindings/ocaml/linker/linker_ocaml.c (original)
> > +++ llvm/trunk/bindings/ocaml/linker/linker_ocaml.c Tue Dec 23 13:16:45
> 2014
> > @@ -23,11 +23,11 @@
> >
> > void llvm_raise(value Prototype, char *Message);
> >
> > -/* llmodule -> llmodule -> Mode.t -> unit */
> > -CAMLprim value llvm_link_modules(LLVMModuleRef Dst, LLVMModuleRef Src,
> value Mode) {
> > +/* llmodule -> llmodule -> unit */
> > +CAMLprim value llvm_link_modules(LLVMModuleRef Dst, LLVMModuleRef Src) {
> >   char* Message;
> >
> > -  if (LLVMLinkModules(Dst, Src, Int_val(Mode), &Message))
> > +  if (LLVMLinkModules(Dst, Src, 0, &Message))
> >     llvm_raise(*caml_named_value("Llvm_linker.Error"), Message);
> >
> >   return Val_unit;
> >
> > Modified: llvm/trunk/bindings/ocaml/linker/llvm_linker.ml
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/bindings/ocaml/linker/llvm_linker.ml?rev=224782&r1=224781&r2=224782&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/bindings/ocaml/linker/llvm_linker.ml (original)
> > +++ llvm/trunk/bindings/ocaml/linker/llvm_linker.ml Tue Dec 23 13:16:45
> 2014
> > @@ -11,11 +11,5 @@ exception Error of string
> >
> > let () = Callback.register_exception "Llvm_linker.Error" (Error "")
> >
> > -module Mode = struct
> > -  type t =
> > -  | DestroySource
> > -  | PreserveSource
> > -end
> > -
> > -external link_modules : Llvm.llmodule -> Llvm.llmodule -> Mode.t -> unit
> > +external link_modules : Llvm.llmodule -> Llvm.llmodule -> unit
> >                       = "llvm_link_modules"
> >
> > Modified: llvm/trunk/bindings/ocaml/linker/llvm_linker.mli
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/bindings/ocaml/linker/llvm_linker.mli?rev=224782&r1=224781&r2=224782&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/bindings/ocaml/linker/llvm_linker.mli (original)
> > +++ llvm/trunk/bindings/ocaml/linker/llvm_linker.mli Tue Dec 23 13:16:45
> 2014
> > @@ -14,13 +14,6 @@
> >
> > exception Error of string
> >
> > -(** Linking mode. *)
> > -module Mode : sig
> > -  type t =
> > -  | DestroySource
> > -  | PreserveSource
> > -end
> > -
> > (** [link_modules dst src mode] links [src] into [dst], raising [Error]
> >     if the linking fails. *)
> > -val link_modules : Llvm.llmodule -> Llvm.llmodule -> Mode.t -> unit
> > \ No newline at end of file
> > +val link_modules : Llvm.llmodule -> Llvm.llmodule -> unit
> > \ No newline at end of file
> >
> > Modified: llvm/trunk/include/llvm-c/Linker.h
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm-c/Linker.h?rev=224782&r1=224781&r2=224782&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/include/llvm-c/Linker.h (original)
> > +++ llvm/trunk/include/llvm-c/Linker.h Tue Dec 23 13:16:45 2014
> > @@ -20,20 +20,13 @@
> > extern "C" {
> > #endif
> >
> > -
> > -typedef enum {
> > -  LLVMLinkerDestroySource = 0, /* Allow source module to be destroyed.
> */
> > -  LLVMLinkerPreserveSource = 1 /* Preserve the source module. */
> > -} LLVMLinkerMode;
> > -
> > -
> > /* Links the source module into the destination module, taking ownership
> >  * of the source module away from the caller. Optionally returns a
> >  * human-readable description of any errors that occurred in linking.
> >  * OutMessage must be disposed with LLVMDisposeMessage. The return value
> >  * is true if an error occurred, false otherwise. */
> > LLVMBool LLVMLinkModules(LLVMModuleRef Dest, LLVMModuleRef Src,
> > -                         LLVMLinkerMode Mode, char **OutMessage);
> > +                         unsigned Unused, char **OutMessage);
> >
> > #ifdef __cplusplus
> > }
> >
> > Modified: llvm/trunk/lib/Linker/LinkModules.cpp
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Linker/LinkModules.cpp?rev=224782&r1=224781&r2=224782&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/lib/Linker/LinkModules.cpp (original)
> > +++ llvm/trunk/lib/Linker/LinkModules.cpp Tue Dec 23 13:16:45 2014
> > @@ -1739,7 +1739,7 @@ bool Linker::LinkModules(Module *Dest, M
> >
> //===----------------------------------------------------------------------===//
> >
> > LLVMBool LLVMLinkModules(LLVMModuleRef Dest, LLVMModuleRef Src,
> > -                         LLVMLinkerMode Mode, char **OutMessages) {
> > +                         unsigned Unused, char **OutMessages) {
> >   Module *D = unwrap(Dest);
> >   std::string Message;
> >   raw_string_ostream Stream(Message);
> >
> > Modified: llvm/trunk/test/Bindings/OCaml/linker.ml
> > URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Bindings/OCaml/linker.ml?rev=224782&r1=224781&r2=224782&view=diff
> >
> ==============================================================================
> > --- llvm/trunk/test/Bindings/OCaml/linker.ml (original)
> > +++ llvm/trunk/test/Bindings/OCaml/linker.ml Tue Dec 23 13:16:45 2014
> > @@ -45,7 +45,7 @@ let test_linker () =
> >
> >   let m1 = make_module "one"
> >   and m2 = make_module "two" in
> > -  link_modules m1 m2 Mode.DestroySource;
> > +  link_modules m1 m2;
> >   dispose_module m1;
> >
> >   let m1 = make_module "one"
> >
> >
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