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/Transforms/LoopVectorize/control-flow.ll b/llvm/test/Transforms/LoopVectorize/control-flow.ll
index ae0e6c67ccb..c56f9122e46 100644
--- a/llvm/test/Transforms/LoopVectorize/control-flow.ll
+++ b/llvm/test/Transforms/LoopVectorize/control-flow.ll
@@ -55,24 +55,24 @@ attributes #0 = { nounwind }
 !llvm.module.flags = !{!7, !8}
 !llvm.ident = !{!9}
 
-!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
-!1 = !MDFile(filename: "source.cpp", directory: ".")
+!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !DIFile(filename: "source.cpp", directory: ".")
 !2 = !{}
 !3 = !{!4}
-!4 = !MDSubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 2, file: !1, scope: !5, type: !6, function: i32 (i32*, i32)* @_Z4testPii, variables: !2)
-!5 = !MDFile(filename: "source.cpp", directory: ".")
-!6 = !MDSubroutineType(types: !2)
+!4 = !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 2, file: !1, scope: !5, type: !6, function: i32 (i32*, i32)* @_Z4testPii, variables: !2)
+!5 = !DIFile(filename: "source.cpp", directory: ".")
+!6 = !DISubroutineType(types: !2)
 !7 = !{i32 2, !"Dwarf Version", i32 2}
 !8 = !{i32 2, !"Debug Info Version", i32 3}
 !9 = !{!"clang version 3.5.0"}
-!10 = !MDLocation(line: 3, column: 8, scope: !11)
-!11 = distinct !MDLexicalBlock(line: 3, column: 3, file: !1, scope: !4)
-!12 = !MDLocation(line: 5, column: 9, scope: !13)
-!13 = distinct !MDLexicalBlock(line: 5, column: 9, file: !1, scope: !14)
-!14 = distinct !MDLexicalBlock(line: 4, column: 3, file: !1, scope: !11)
+!10 = !DILocation(line: 3, column: 8, scope: !11)
+!11 = distinct !DILexicalBlock(line: 3, column: 3, file: !1, scope: !4)
+!12 = !DILocation(line: 5, column: 9, scope: !13)
+!13 = distinct !DILexicalBlock(line: 5, column: 9, file: !1, scope: !14)
+!14 = distinct !DILexicalBlock(line: 4, column: 3, file: !1, scope: !11)
 !15 = !{!16, !16, i64 0}
 !16 = !{!"int", !17, i64 0}
 !17 = !{!"omnipotent char", !18, i64 0}
 !18 = !{!"Simple C/C++ TBAA"}
-!19 = !MDLocation(line: 8, column: 7, scope: !13)
-!20 = !MDLocation(line: 12, column: 3, scope: !4)
+!19 = !DILocation(line: 8, column: 7, scope: !13)
+!20 = !DILocation(line: 12, column: 3, scope: !4)