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, 3 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DbgValueHistoryCalculator.h b/llvm/lib/CodeGen/AsmPrinter/DbgValueHistoryCalculator.h
index c25aaffd2d1..546d1b44378 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DbgValueHistoryCalculator.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DbgValueHistoryCalculator.h
@@ -17,8 +17,8 @@ namespace llvm {
 
 class MachineFunction;
 class MachineInstr;
-class MDLocalVariable;
-class MDLocation;
+class DILocalVariable;
+class DILocation;
 class TargetRegisterInfo;
 
 // For each user variable, keep a list of instruction ranges where this variable
@@ -32,7 +32,7 @@ class DbgValueHistoryMap {
 public:
   typedef std::pair<const MachineInstr *, const MachineInstr *> InstrRange;
   typedef SmallVector<InstrRange, 4> InstrRanges;
-  typedef std::pair<const MDLocalVariable *, const MDLocation *>
+  typedef std::pair<const DILocalVariable *, const DILocation *>
       InlinedVariable;
   typedef MapVector<InlinedVariable, InstrRanges> InstrRangesMap;