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, 15 insertions, 15 deletions

diff --git a/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll b/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll
index 3ddd351f92b..fac5b186e89 100644
--- a/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll
+++ b/llvm/test/Transforms/SimplifyCFG/branch-fold-dbg.ll
@@ -41,19 +41,19 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 
 !llvm.dbg.sp = !{!0}
 
-!0 = !MDSubprogram(name: "foo", line: 231, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !15, scope: !1, type: !3, function: void (i32)* @foo)
-!1 = !MDFile(filename: "a.c", directory: "/private/tmp")
-!2 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang (trunk 129006)", isOptimized: true, emissionKind: 0, file: !15, enums: !4, retainedTypes: !4)
-!3 = !MDSubroutineType(types: !4)
+!0 = !DISubprogram(name: "foo", line: 231, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !15, scope: !1, type: !3, function: void (i32)* @foo)
+!1 = !DIFile(filename: "a.c", directory: "/private/tmp")
+!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang (trunk 129006)", isOptimized: true, emissionKind: 0, file: !15, enums: !4, retainedTypes: !4)
+!3 = !DISubroutineType(types: !4)
 !4 = !{null}
-!5 = !MDLocation(line: 131, column: 2, scope: !0)
-!6 = !MDLocation(line: 134, column: 2, scope: !0)
-!7 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "bar", line: 232, scope: !8, file: !1, type: !9)
-!8 = distinct !MDLexicalBlock(line: 231, column: 1, file: !15, scope: !0)
-!9 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !10)
-!10 = !MDDerivedType(tag: DW_TAG_const_type, scope: !2, baseType: !11)
-!11 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
-!12 = !MDLocation(line: 232, column: 40, scope: !8)
-!13 = !MDLocation(line: 234, column: 2, scope: !8)
-!14 = !MDLocation(line: 274, column: 1, scope: !8)
-!15 = !MDFile(filename: "a.c", directory: "/private/tmp")
+!5 = !DILocation(line: 131, column: 2, scope: !0)
+!6 = !DILocation(line: 134, column: 2, scope: !0)
+!7 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "bar", line: 232, scope: !8, file: !1, type: !9)
+!8 = distinct !DILexicalBlock(line: 231, column: 1, file: !15, scope: !0)
+!9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !10)
+!10 = !DIDerivedType(tag: DW_TAG_const_type, scope: !2, baseType: !11)
+!11 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
+!12 = !DILocation(line: 232, column: 40, scope: !8)
+!13 = !DILocation(line: 234, column: 2, scope: !8)
+!14 = !DILocation(line: 274, column: 1, scope: !8)
+!15 = !DIFile(filename: "a.c", directory: "/private/tmp")