llvm-6502/test/Assembler/mdcompileunit.ll
Duncan P. N. Exon Smith 99f12691dd IR: Change MDFile to directly store the filename/directory
In the old (well, current) schema, there are two types of file
references: untagged and tagged (the latter references the former).

    !0 = !{!"filename", !"/directory"}
    !1 = !{!"0x29", !1} ; DW_TAG_file_type [filename] [/directory]

The interface to `DIBuilder` universally takes the tagged version,
described by `DIFile`.  However, most `file:` references actually use
the untagged version directly.

In the new hierarchy, I'm merging this into a single node: `MDFile`.

Originally I'd planned to keep the old schema unchanged until after I
moved the new hierarchy into place.

However, it turns out to be trivial to make `MDFile` match both nodes at
the same time.

  - Anyone referencing !1 does so through `DIFile`, whose implementation
    I need to gut anyway (as I do the rest of the `DIDescriptor`s).
  - Anyone referencing !0 just references an `MDNode`, and expects a
    node with two `MDString` operands.

This commit achieves that, and updates all the testcases for the parts
of the new hierarchy that used the two-node schema (I've replaced the
untagged nodes with `distinct !{}` to make the diff clear (otherwise the
metadata all gets renumbered); it might be worthwhile to come back and
delete those nodes and renumber the world, not sure).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230057 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-20 20:35:17 +00:00

32 lines
1.6 KiB
LLVM

; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
; RUN: verify-uselistorder %s
; CHECK: !named = !{!0, !1, !2, !3, !4, !5, !6, !7, !7, !8, !8}
!named = !{!0, !1, !2, !3, !4, !5, !6, !7, !8, !9, !10}
!0 = distinct !{}
!1 = !MDFile(filename: "path/to/file", directory: "/path/to/dir")
!2 = distinct !{}
!3 = distinct !{}
!4 = distinct !{}
!5 = distinct !{}
!6 = distinct !{}
; CHECK: !7 = !MDCompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, flags: "-O2", runtimeVersion: 2, splitDebugFilename: "abc.debug", emissionKind: 3, enums: !2, retainedTypes: !3, subprograms: !4, globals: !5, imports: !6)
!7 = !MDCompileUnit(language: DW_LANG_C99, file: !1, producer: "clang",
isOptimized: true, flags: "-O2", runtimeVersion: 2,
splitDebugFilename: "abc.debug", emissionKind: 3,
enums: !2, retainedTypes: !3, subprograms: !4,
globals: !5, imports: !6)
!8 = !MDCompileUnit(language: 12, file: !1, producer: "clang",
isOptimized: true, flags: "-O2", runtimeVersion: 2,
splitDebugFilename: "abc.debug", emissionKind: 3,
enums: !2, retainedTypes: !3, subprograms: !4,
globals: !5, imports: !6)
; CHECK: !8 = !MDCompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: 0)
!9 = !MDCompileUnit(language: 12, file: !1, producer: "",
isOptimized: false, flags: "", runtimeVersion: 0,
splitDebugFilename: "", emissionKind: 0)
!10 = !MDCompileUnit(language: 12, file: !1)