IR: Give 'DI' prefix to debug info metadata

Finish off PR23080 by renaming the debug info IR constructs from `MD*`
to `DI*`.  The last of the `DIDescriptor` classes were deleted in
r235356, and the last of the related typedefs removed in r235413, so
this has all baked for about a week.

Note: If you have out-of-tree code (like a frontend), I recommend that
you get everything compiling and tests passing with the *previous*
commit before updating to this one.  It'll be easier to keep track of
what code is using the `DIDescriptor` hierarchy and what you've already
updated, and I think you're extremely unlikely to insert bugs.  YMMV of
course.

Back to *this* commit: I did this using the rename-md-di-nodes.sh
upgrade script I've attached to PR23080 (both code and testcases) and
filtered through clang-format-diff.py.  I edited the tests for
test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns
were off-by-three.  It should work on your out-of-tree testcases (and
code, if you've followed the advice in the previous paragraph).

Some of the tests are in badly named files now (e.g.,
test/Assembler/invalid-mdcompositetype-missing-tag.ll should be
'dicompositetype'); I'll come back and move the files in a follow-up
commit.

llvm-svn: 236120

1 files changed, 12 insertions, 12 deletions

diff --git a/llvm/test/DebugInfo/X86/empty-array.ll b/llvm/test/DebugInfo/X86/empty-array.ll
index 678738dd274..ce460a783c0 100644
--- a/llvm/test/DebugInfo/X86/empty-array.ll
+++ b/llvm/test/DebugInfo/X86/empty-array.ll
@@ -27,21 +27,21 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21}
 
-!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
-!5 = !MDGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %class.A* @a)
-!6 = !MDFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
-!7 = !MDCompositeType(tag: DW_TAG_class_type, name: "A", line: 1, align: 32, file: !20, elements: !8)
+!5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %class.A* @a)
+!6 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
+!7 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, align: 32, file: !20, elements: !8)
 !8 = !{!9, !14}
-!9 = !MDDerivedType(tag: DW_TAG_member, name: "x", line: 1, flags: DIFlagPrivate, file: !20, scope: !7, baseType: !10)
-!10 = !MDCompositeType(tag: DW_TAG_array_type, align: 32, baseType: !11, elements: !12)
-!11 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!9 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 1, flags: DIFlagPrivate, file: !20, scope: !7, baseType: !10)
+!10 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !11, elements: !12)
+!11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{!13}
-!13 = !MDSubrange(count: -1)
-!14 = !MDSubprogram(name: "A", line: 1, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !6, scope: !7, type: !15)
-!15 = !MDSubroutineType(types: !16)
+!13 = !DISubrange(count: -1)
+!14 = !DISubprogram(name: "A", line: 1, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !6, scope: !7, type: !15)
+!15 = !DISubroutineType(types: !16)
 !16 = !{null, !17}
-!17 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !7)
-!20 = !MDFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
+!17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !7)
+!20 = !DIFile(filename: "t.cpp", directory: "/Volumes/Sandbox/llvm")
 !21 = !{i32 1, !"Debug Info Version", i32 3}