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, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 86d33b0..7f3c3e9 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1619,7 +1619,7 @@ void MachineInstr::print(raw_ostream &OS, bool SkipOpers) const {
     }
     if (isDebugValue() && MO.isMetadata()) {
       // Pretty print DBG_VALUE instructions.
-      auto *DIV = dyn_cast<MDLocalVariable>(MO.getMetadata());
+      auto *DIV = dyn_cast<DILocalVariable>(MO.getMetadata());
       if (DIV && !DIV->getName().empty())
         OS << "!\"" << DIV->getName() << '\"';
       else
@@ -1710,7 +1710,7 @@ void MachineInstr::print(raw_ostream &OS, bool SkipOpers) const {
   // Print debug location information.
   if (isDebugValue() && getOperand(e - 2).isMetadata()) {
     if (!HaveSemi) OS << ";";
-    auto *DV = cast<MDLocalVariable>(getOperand(e - 2).getMetadata());
+    auto *DV = cast<DILocalVariable>(getOperand(e - 2).getMetadata());
     OS << " line no:" <<  DV->getLine();
     if (auto *InlinedAt = debugLoc->getInlinedAt()) {
       DebugLoc InlinedAtDL(InlinedAt);