DebugInfo: Remove DIDescriptor from the DebugInfo API

Stop using `DIDescriptor` and its subclasses in the `DebugInfoFinder`
API, as well as the rest of the API hanging around in `DebugInfo.h`.

llvm-svn: 235240

llvm/lib/Transforms/IPO/ArgumentPromotion.cpp

@@ -89,7 +89,7 @@ namespace {
     bool doInitialization(CallGraph &CG) override;
     /// The maximum number of elements to expand, or 0 for unlimited.
     unsigned maxElements;
-    DenseMap<const Function *, DISubprogram> FunctionDIs;
+    DenseMap<const Function *, MDSubprogram *> FunctionDIs;
   };
 }
 

llvm/lib/Transforms/IPO/DeadArgumentElimination.cpp

@@ -127,7 +127,7 @@ namespace {
     // As the code generation for module is finished (and DIBuilder is
     // finalized) we assume that subprogram descriptors won't be changed, and
     // they are stored in map for short duration anyway.
-    DenseMap<const Function *, DISubprogram> FunctionDIs;
+    DenseMap<const Function *, MDSubprogram *> FunctionDIs;
 
   protected:
     // DAH uses this to specify a different ID.

llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp

@@ -248,7 +248,7 @@ class DataFlowSanitizer : public ModulePass {
   DFSanABIList ABIList;
   DenseMap<Value *, Function *> UnwrappedFnMap;
   AttributeSet ReadOnlyNoneAttrs;
-  DenseMap<const Function *, DISubprogram> FunctionDIs;
+  DenseMap<const Function *, MDSubprogram *> FunctionDIs;
 
   Value *getShadowAddress(Value *Addr, Instruction *Pos);
   bool isInstrumented(const Function *F);