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, 9 insertions, 9 deletions

diff --git a/llvm/test/CodeGen/ARM/debug-info-no-frame.ll b/llvm/test/CodeGen/ARM/debug-info-no-frame.ll
index 418a074b9e1..e00563cc47c 100644
--- a/llvm/test/CodeGen/ARM/debug-info-no-frame.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-no-frame.ll
@@ -21,16 +21,16 @@ attributes #1 = { nounwind readnone }
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7, !8}
 
-!0 = !MDCompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: false)
-!1 = !MDFile(filename: "file.c", directory: "/dir")
+!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: false)
+!1 = !DIFile(filename: "file.c", directory: "/dir")
 !2 = !{}
-!3 = !MDSubprogram(name: "need_cfi_def_cfa_offset", scope: !1, file: !1, line: 1, type: !4, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, function: void ()* @need_cfi_def_cfa_offset, variables: !2)
-!4 = !MDSubroutineType(types: !5)
+!3 = !DISubprogram(name: "need_cfi_def_cfa_offset", scope: !1, file: !1, line: 1, type: !4, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, function: void ()* @need_cfi_def_cfa_offset, variables: !2)
+!4 = !DISubroutineType(types: !5)
 !5 = !{null}
-!6 = !MDBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!6 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !{i32 2, !"Dwarf Version", i32 4}
 !8 = !{i32 2, !"Debug Info Version", i32 3}
-!9 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "Depth", scope: !3, file: !1, line: 3, type: !6)
-!10 = !MDExpression()
-!11 = !MDLocation(line: 3, column: 9, scope: !3)
-!12 = !MDLocation(line: 7, column: 5, scope: !3)
+!9 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "Depth", scope: !3, file: !1, line: 3, type: !6)
+!10 = !DIExpression()
+!11 = !DILocation(line: 3, column: 9, scope: !3)
+!12 = !DILocation(line: 7, column: 5, scope: !3)