[LLVMdev] LLVM 2.9 metadata

[Seb]

Hi all,

In LLVM documentation about source level debugging
(http://www.llvm.org/releases/2.9/docs/SourceLevelDebugging.html)

Subprogram descriptor is defined as:

!2 = metadata !{
  i32,      ;; Tag = 46 + LLVMDebugVersion
<http://www.llvm.org/releases/2.9/docs/SourceLevelDebugging.html#LLVMDebugVersion>
            ;; (DW_TAG_subprogram)
  i32,      ;; Unused field.
  metadata, ;; Reference to context descriptor
  metadata, ;; Name
  metadata, ;; Display name (fully qualified C++ name)
  metadata, ;; MIPS linkage name (for C++)
  metadata, ;; Reference to file where defined
  i32,      ;; Line number where defined
  metadata, ;; Reference to type descriptor
  i1,       ;; True if the global is local to compile unit (static)
  i1        ;; True if the global is defined in the compile unit (not extern)
  i32       ;; Virtuality, e.g. dwarf::DW_VIRTUALITY__virtual
  i32       ;; Index into a virtual function
  metadata, ;; indicates which base type contains the vtable pointer for the
            ;; derived class
  i1        ;; isArtificial
  i1        ;; isOptimized
  Function *;; Pointer to LLVM function

}

When I use clang 2.9 and emit-llvm code metadata generated for a routine foo is:

!0 = metadata !{i32 589870, i32 0, metadata !1, metadata !"foo",
metadata !"foo", metadata !"", metadata !1, i32 1, metadata !3, i1
false, i1 true, i32 0, i32 0, i32 0, i32 0, i1 false, void ()* @foo} ;
[ DW_TAG_subprogram ]
!1 = metadata !{i32 589865, metadata !"foodbg.c", metadata
!"/home/deldon/tmp", metadata !2} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 589841, i32 0, i32 12, metadata !"foodbg.c",
metadata !"/home/deldon/tmp", metadata !"clang version 2.9
(tags/RELEASE_29/final)", i1 true, i1 false, metadata !"", i32 0} ; [
DW_TAG_compile_unit ]
!3 = metadata !{i32 589845, metadata !1, metadata !"", metadata !1,
i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ;
[ DW_TAG_subroutine_type ]
!4 = metadata !{null}
...

As you can see metadata definition !0 doesn't match documentation.
What is the correct definition (CLANG or LLVM documentation ?).
Thanks for your answer
Seb
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