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, 5 insertions, 5 deletions

diff --git a/llvm/lib/Transforms/Utils/CloneFunction.cpp b/llvm/lib/Transforms/Utils/CloneFunction.cpp
index a9f476a..4f8d1dfb 100644
--- a/llvm/lib/Transforms/Utils/CloneFunction.cpp
+++ b/llvm/lib/Transforms/Utils/CloneFunction.cpp
@@ -155,9 +155,9 @@ void llvm::CloneFunctionInto(Function *NewFunc, const Function *OldFunc,
 }
 
 // Find the MDNode which corresponds to the subprogram data that described F.
-static MDSubprogram *FindSubprogram(const Function *F,
+static DISubprogram *FindSubprogram(const Function *F,
                                     DebugInfoFinder &Finder) {
-  for (MDSubprogram *Subprogram : Finder.subprograms()) {
+  for (DISubprogram *Subprogram : Finder.subprograms()) {
     if (Subprogram->describes(F))
       return Subprogram;
   }
@@ -166,7 +166,7 @@ static MDSubprogram *FindSubprogram(const Function *F,
 
 // Add an operand to an existing MDNode. The new operand will be added at the
 // back of the operand list.
-static void AddOperand(MDCompileUnit *CU, MDSubprogramArray SPs,
+static void AddOperand(DICompileUnit *CU, DISubprogramArray SPs,
                        Metadata *NewSP) {
   SmallVector<Metadata *, 16> NewSPs;
   NewSPs.reserve(SPs.size() + 1);
@@ -183,14 +183,14 @@ static void CloneDebugInfoMetadata(Function *NewFunc, const Function *OldFunc,
   DebugInfoFinder Finder;
   Finder.processModule(*OldFunc->getParent());
 
-  const MDSubprogram *OldSubprogramMDNode = FindSubprogram(OldFunc, Finder);
+  const DISubprogram *OldSubprogramMDNode = FindSubprogram(OldFunc, Finder);
   if (!OldSubprogramMDNode) return;
 
   // Ensure that OldFunc appears in the map.
   // (if it's already there it must point to NewFunc anyway)
   VMap[OldFunc] = NewFunc;
   auto *NewSubprogram =
-      cast<MDSubprogram>(MapMetadata(OldSubprogramMDNode, VMap));
+      cast<DISubprogram>(MapMetadata(OldSubprogramMDNode, VMap));
 
   for (auto *CU : Finder.compile_units()) {
     auto Subprograms = CU->getSubprograms();