[clang][Interp][NFC] Add InterpFrame::dump()

Author: tbaederr

clang/lib/AST/Interp/Disasm.cpp

@@ -16,6 +16,7 @@
 #include "FunctionPointer.h"
 #include "Integral.h"
 #include "IntegralAP.h"
+#include "InterpFrame.h"
 #include "Opcode.h"
 #include "PrimType.h"
 #include "Program.h"
@@ -206,3 +207,29 @@ LLVM_DUMP_METHOD void Descriptor::dump(llvm::raw_ostream &OS) const {
   if (isDummy())
     OS << " dummy";
 }
+
+LLVM_DUMP_METHOD void InterpFrame::dump(llvm::raw_ostream &OS,
+                                        unsigned Indent) const {
+  unsigned Spaces = Indent * 2;
+  {
+    ColorScope SC(OS, true, {llvm::raw_ostream::BLUE, true});
+    OS.indent(Spaces);
+    if (getCallee())
+      describe(OS);
+    else
+      OS << "Frame (Depth: " << getDepth() << ")";
+    OS << "\n";
+  }
+  OS.indent(Spaces) << "Function: " << getFunction();
+  if (const Function *F = getFunction()) {
+    OS << " (" << F->getName() << ")";
+  }
+  OS << "\n";
+  OS.indent(Spaces) << "This: " << getThis() << "\n";
+  OS.indent(Spaces) << "RVO: " << getRVOPtr() << "\n";
+
+  while (const InterpFrame *F = this->Caller) {
+    F->dump(OS, Indent + 1);
+    F = F->Caller;
+  }
+}

clang/lib/AST/Interp/InterpFrame.h

@@ -123,6 +123,9 @@ class InterpFrame final : public Frame {
 
   unsigned getDepth() const { return Depth; }
 
+  void dump() const { dump(llvm::errs(), 0); }
+  void dump(llvm::raw_ostream &OS, unsigned Indent = 0) const;
+
 private:
   /// Returns an original argument from the stack.
   template <typename T> const T &stackRef(unsigned Offset) const {