[SYCL] Added a new CLANG pass that adapts the names of OclCXX

classes and funcs for translation to SPIRV.

Signed-off-by: Vladimir Lazarev <vladimir.lazarev@intel.com>

Author: vladimirlaz

clang/lib/CodeGen/BackendUtil.cpp

@@ -12,6 +12,7 @@
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/TargetOptions.h"
+#include "clang/CodeGen/OclCxxRewrite/BifNameReflower.h"
 #include "clang/Frontend/FrontendDiagnostic.h"
 #include "clang/Frontend/Utils.h"
 #include "clang/Lex/HeaderSearchOptions.h"
@@ -39,6 +40,7 @@
 #include "llvm/Passes/PassBuilder.h"
 #include "llvm/Support/BuryPointer.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/TargetRegistry.h"
@@ -801,6 +803,10 @@ void EmitAssemblyHelper::EmitAssembly(BackendAction Action,
   PerFunctionPasses.add(
       createTargetTransformInfoWrapperPass(getTargetIRAnalysis()));
 
+  if (LangOpts.SYCL) {
+    PerModulePasses.add(createOclCxxBifNameReflowerPass());
+  }
+
   CreatePasses(PerModulePasses, PerFunctionPasses);
 
   legacy::PassManager CodeGenPasses;

clang/lib/CodeGen/CMakeLists.txt

@@ -1,3 +1,5 @@
+add_subdirectory(OclCxxRewrite)
+
 set(LLVM_LINK_COMPONENTS
   Analysis
   BitReader
@@ -105,4 +107,5 @@ add_clang_library(clangCodeGen
   clangFrontend
   clangLex
   clangSerialization
+  clangOclCxxRewrite
   )

clang/lib/CodeGen/CodeGenTypes.cpp

@@ -55,6 +55,20 @@ void CodeGenTypes::addRecordTypeName(const RecordDecl *RD,
   llvm::raw_svector_ostream OS(TypeName);
   OS << RD->getKindName() << '.';
 
+  // NOTE: The following block of code is copied from CLANG-3.6 with
+  // support of OpenCLCPlusPlus. It is rather the temporary solution
+  // that is going to be used until the general solution is ported/developed
+  // in the latest llvm trunc.
+  //
+  // For SYCL, the mangled type name is attached, so it can be
+  // reflown to proper name later.
+  if (getContext().getLangOpts().SYCL) {
+    std::unique_ptr<MangleContext> MC(getContext().createMangleContext());
+    auto RDT = getContext().getRecordType(RD);
+    MC->mangleCXXRTTIName(RDT, OS);
+    OS << ".";
+  }
+
   // Name the codegen type after the typedef name
   // if there is no tag type name available
   if (RD->getIdentifier()) {