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, 7 insertions, 7 deletions

diff --git a/llvm/test/Linker/Inputs/subprogram-linkonce-weak-odr.ll b/llvm/test/Linker/Inputs/subprogram-linkonce-weak-odr.ll
index b6518a81eab..71c080173a3 100644
--- a/llvm/test/Linker/Inputs/subprogram-linkonce-weak-odr.ll
+++ b/llvm/test/Linker/Inputs/subprogram-linkonce-weak-odr.ll
@@ -1,15 +1,15 @@
 define weak_odr i32 @foo(i32 %a, i32 %b) {
 entry:
-  %sum = add i32 %a, %b, !dbg !MDLocation(line: 2, scope: !3)
-  ret i32 %sum, !dbg !MDLocation(line: 3, scope: !3)
+  %sum = add i32 %a, %b, !dbg !DILocation(line: 2, scope: !3)
+  ret i32 %sum, !dbg !DILocation(line: 3, scope: !3)
 }
 
 !llvm.module.flags = !{!0}
 !0 = !{i32 2, !"Debug Info Version", i32 3}
 
 !llvm.dbg.cu = !{!1}
-!1 = !MDCompileUnit(language: DW_LANG_C99, file: !2, subprograms: !{!3}, emissionKind: 1)
-!2 = !MDFile(filename: "foo.c", directory: "/path/to/dir")
-!3 = !MDSubprogram(file: !4, scope: !4, line: 1, name: "foo", function: i32 (i32, i32)* @foo, type: !5)
-!4 = !MDFile(filename: "foo.h", directory: "/path/to/dir")
-!5 = !MDSubroutineType(types: !{})
+!1 = !DICompileUnit(language: DW_LANG_C99, file: !2, subprograms: !{!3}, emissionKind: 1)
+!2 = !DIFile(filename: "foo.c", directory: "/path/to/dir")
+!3 = !DISubprogram(file: !4, scope: !4, line: 1, name: "foo", function: i32 (i32, i32)* @foo, type: !5)
+!4 = !DIFile(filename: "foo.h", directory: "/path/to/dir")
+!5 = !DISubroutineType(types: !{})