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, 11 insertions, 11 deletions

diff --git a/llvm/test/DebugInfo/member-pointers.ll b/llvm/test/DebugInfo/member-pointers.ll
index a3c438792d6..0cf9ead8421 100644
--- a/llvm/test/DebugInfo/member-pointers.ll
+++ b/llvm/test/DebugInfo/member-pointers.ll
@@ -23,18 +23,18 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!16}
 
-!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 ", isOptimized: false, emissionKind: 0, file: !15, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 ", isOptimized: false, emissionKind: 0, file: !15, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5, !10}
-!5 = !MDGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: i64* @x)
-!6 = !MDFile(filename: "simple.cpp", directory: "/home/blaikie/Development/scratch")
-!7 = !MDDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !8, extraData: !9)
-!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!9 = !MDCompositeType(tag: DW_TAG_structure_type, name: "S", line: 1, size: 8, align: 8, file: !15, elements: !1)
-!10 = !MDGlobalVariable(name: "y", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !11, variable: { i64, i64 }* @y)
-!11 = !MDDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !12, extraData: !9)
-!12 = !MDSubroutineType(types: !13)
+!5 = !DIGlobalVariable(name: "x", line: 4, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: i64* @x)
+!6 = !DIFile(filename: "simple.cpp", directory: "/home/blaikie/Development/scratch")
+!7 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !8, extraData: !9)
+!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!9 = !DICompositeType(tag: DW_TAG_structure_type, name: "S", line: 1, size: 8, align: 8, file: !15, elements: !1)
+!10 = !DIGlobalVariable(name: "y", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !11, variable: { i64, i64 }* @y)
+!11 = !DIDerivedType(tag: DW_TAG_ptr_to_member_type, baseType: !12, extraData: !9)
+!12 = !DISubroutineType(types: !13)
 !13 = !{null, !14, !8}
-!14 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !9)
-!15 = !MDFile(filename: "simple.cpp", directory: "/home/blaikie/Development/scratch")
+!14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !9)
+!15 = !DIFile(filename: "simple.cpp", directory: "/home/blaikie/Development/scratch")
 !16 = !{i32 1, !"Debug Info Version", i32 3}