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, 27 insertions, 27 deletions

diff --git a/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll b/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll
index 72027dedec1..47d366e49de 100644
--- a/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll
+++ b/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll
@@ -39,40 +39,40 @@ define void @test_basic() #0 {
 ; ARM-linux       .cfi_same_value r5
 }
 
-!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
-!1 = !MDFile(filename: "var.c", directory: "/tmp")
+!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !DIFile(filename: "var.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !MDSubprogram(name: "test_basic", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !5, type: !6, function: void ()* @test_basic, variables: !2)
-!5 = !MDFile(filename: "var.c", directory: "/tmp")
-!6 = !MDSubroutineType(types: !7)
+!4 = !DISubprogram(name: "test_basic", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !5, type: !6, function: void ()* @test_basic, variables: !2)
+!5 = !DIFile(filename: "var.c", directory: "/tmp")
+!6 = !DISubroutineType(types: !7)
 !7 = !{!8, !8}
-!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{i32 2, !"Dwarf Version", i32 4}
 !10 = !{i32 1, !"Debug Info Version", i32 3}
 !11 = !{!"clang version 3.5 "}
-!12 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "count", line: 5, arg: 1, scope: !4, file: !5, type: !8)
-!13 = !MDLocation(line: 5, scope: !4)
-!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "vl", line: 6, scope: !4, file: !5, type: !15)
-!15 = !MDDerivedType(tag: DW_TAG_typedef, name: "va_list", line: 30, file: !16, baseType: !17)
-!16 = !MDFile(filename: "/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", directory: "/tmp")
-!17 = !MDDerivedType(tag: DW_TAG_typedef, name: "__builtin_va_list", line: 6, file: !1, baseType: !18)
-!18 = !MDCompositeType(tag: DW_TAG_structure_type, name: "__va_list", line: 6, size: 32, align: 32, file: !1, elements: !19)
+!12 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "count", line: 5, arg: 1, scope: !4, file: !5, type: !8)
+!13 = !DILocation(line: 5, scope: !4)
+!14 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "vl", line: 6, scope: !4, file: !5, type: !15)
+!15 = !DIDerivedType(tag: DW_TAG_typedef, name: "va_list", line: 30, file: !16, baseType: !17)
+!16 = !DIFile(filename: "/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", directory: "/tmp")
+!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "__builtin_va_list", line: 6, file: !1, baseType: !18)
+!18 = !DICompositeType(tag: DW_TAG_structure_type, name: "__va_list", line: 6, size: 32, align: 32, file: !1, elements: !19)
 !19 = !{!20}
-!20 = !MDDerivedType(tag: DW_TAG_member, name: "__ap", line: 6, size: 32, align: 32, file: !1, scope: !18, baseType: !21)
-!21 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: null)
-!22 = !MDLocation(line: 6, scope: !4)
-!23 = !MDLocation(line: 7, scope: !4)
-!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "test_basic", line: 8, scope: !4, file: !5, type: !8)
-!25 = !MDLocation(line: 8, scope: !4)
-!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 9, scope: !27, file: !5, type: !8)
-!27 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !4)
-!28 = !MDLocation(line: 9, scope: !27)
-!29 = !MDLocation(line: 10, scope: !30)
-!30 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !27)
-!31 = !MDLocation(line: 11, scope: !30)
-!32 = !MDLocation(line: 12, scope: !4)
-!33 = !MDLocation(line: 13, scope: !4)
+!20 = !DIDerivedType(tag: DW_TAG_member, name: "__ap", line: 6, size: 32, align: 32, file: !1, scope: !18, baseType: !21)
+!21 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: null)
+!22 = !DILocation(line: 6, scope: !4)
+!23 = !DILocation(line: 7, scope: !4)
+!24 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "test_basic", line: 8, scope: !4, file: !5, type: !8)
+!25 = !DILocation(line: 8, scope: !4)
+!26 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 9, scope: !27, file: !5, type: !8)
+!27 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !4)
+!28 = !DILocation(line: 9, scope: !27)
+!29 = !DILocation(line: 10, scope: !30)
+!30 = distinct !DILexicalBlock(line: 9, column: 0, file: !1, scope: !27)
+!31 = !DILocation(line: 11, scope: !30)
+!32 = !DILocation(line: 12, scope: !4)
+!33 = !DILocation(line: 13, scope: !4)
 
 ; Just to prevent the alloca from being optimized away
 declare void @dummy_use(i32*, i32)