[llvm] r313387 - This reverts r313381

Chad Rosier via llvm-commits llvm-commits at lists.llvm.org
Fri Sep 15 12:56:08 PDT 2017


Please make sure to include the reason for revert in the commit message.


On 9/15/2017 3:53 PM, Vivek Pandya via llvm-commits wrote:
> Author: vivekvpandya
> Date: Fri Sep 15 12:53:54 2017
> New Revision: 313387
>
> URL: http://llvm.org/viewvc/llvm-project?rev=313387&view=rev
> Log:
> This reverts r313381
>
> Removed:
>      llvm/trunk/include/llvm/IR/DiagnosticHandler.h
>      llvm/trunk/lib/IR/DiagnosticHandler.cpp
> Modified:
>      llvm/trunk/include/llvm/Analysis/OptimizationDiagnosticInfo.h
>      llvm/trunk/include/llvm/CodeGen/MachineOptimizationRemarkEmitter.h
>      llvm/trunk/include/llvm/IR/DiagnosticInfo.h
>      llvm/trunk/include/llvm/IR/LLVMContext.h
>      llvm/trunk/include/llvm/LTO/Config.h
>      llvm/trunk/include/llvm/LTO/legacy/LTOCodeGenerator.h
>      llvm/trunk/lib/IR/CMakeLists.txt
>      llvm/trunk/lib/IR/Core.cpp
>      llvm/trunk/lib/IR/DiagnosticInfo.cpp
>      llvm/trunk/lib/IR/LLVMContext.cpp
>      llvm/trunk/lib/IR/LLVMContextImpl.cpp
>      llvm/trunk/lib/IR/LLVMContextImpl.h
>      llvm/trunk/lib/LTO/LTOCodeGenerator.cpp
>      llvm/trunk/lib/Transforms/Scalar/GVN.cpp
>      llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
>      llvm/trunk/test/Transforms/GVN/opt-remarks.ll
>      llvm/trunk/tools/llc/llc.cpp
>      llvm/trunk/tools/llvm-dis/llvm-dis.cpp
>      llvm/trunk/tools/llvm-link/llvm-link.cpp
>      llvm/trunk/tools/llvm-lto/llvm-lto.cpp
>      llvm/trunk/tools/lto/lto.cpp
>
> Modified: llvm/trunk/include/llvm/Analysis/OptimizationDiagnosticInfo.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Analysis/OptimizationDiagnosticInfo.h?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Analysis/OptimizationDiagnosticInfo.h (original)
> +++ llvm/trunk/include/llvm/Analysis/OptimizationDiagnosticInfo.h Fri Sep 15 12:53:54 2017
> @@ -78,9 +78,10 @@ public:
>     /// use the extra analysis (1) to filter trivial false positives or (2) to
>     /// provide more context so that non-trivial false positives can be quickly
>     /// detected by the user.
> -  bool allowExtraAnalysis(StringRef PassName) const {
> -    return (F->getContext().getDiagnosticsOutputFile() ||
> -            F->getContext().getDiagHandlerPtr()->isAnyRemarkEnabled(PassName));
> +  bool allowExtraAnalysis() const {
> +    // For now, only allow this with -fsave-optimization-record since the -Rpass
> +    // options are handled in the front-end.
> +    return F->getContext().getDiagnosticsOutputFile();
>     }
>   
>   private:
>
> Modified: llvm/trunk/include/llvm/CodeGen/MachineOptimizationRemarkEmitter.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/MachineOptimizationRemarkEmitter.h?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/MachineOptimizationRemarkEmitter.h (original)
> +++ llvm/trunk/include/llvm/CodeGen/MachineOptimizationRemarkEmitter.h Fri Sep 15 12:53:54 2017
> @@ -73,9 +73,7 @@ public:
>   
>     /// \see DiagnosticInfoOptimizationBase::isEnabled.
>     bool isEnabled() const override {
> -    const Function &Fn = getFunction();
> -    LLVMContext &Ctx = Fn.getContext();
> -    return Ctx.getDiagHandlerPtr()->isPassedOptRemarkEnabled(getPassName());
> +    return OptimizationRemark::isEnabled(getPassName());
>     }
>   };
>   
> @@ -99,9 +97,7 @@ public:
>   
>     /// \see DiagnosticInfoOptimizationBase::isEnabled.
>     bool isEnabled() const override {
> -    const Function &Fn = getFunction();
> -    LLVMContext &Ctx = Fn.getContext();
> -    return Ctx.getDiagHandlerPtr()->isMissedOptRemarkEnabled(getPassName());
> +    return OptimizationRemarkMissed::isEnabled(getPassName());
>     }
>   };
>   
> @@ -125,9 +121,7 @@ public:
>   
>     /// \see DiagnosticInfoOptimizationBase::isEnabled.
>     bool isEnabled() const override {
> -    const Function &Fn = getFunction();
> -    LLVMContext &Ctx = Fn.getContext();
> -    return Ctx.getDiagHandlerPtr()->isAnalysisRemarkEnabled(getPassName());
> +    return OptimizationRemarkAnalysis::isEnabled(getPassName());
>     }
>   };
>   
> @@ -158,10 +152,10 @@ public:
>     /// that are normally too noisy.  In this mode, we can use the extra analysis
>     /// (1) to filter trivial false positives or (2) to provide more context so
>     /// that non-trivial false positives can be quickly detected by the user.
> -  bool allowExtraAnalysis(StringRef PassName) const {
> -    return (MF.getFunction()->getContext().getDiagnosticsOutputFile() ||
> -            MF.getFunction()->getContext()
> -            .getDiagHandlerPtr()->isAnyRemarkEnabled(PassName));
> +  bool allowExtraAnalysis() const {
> +    // For now, only allow this with -fsave-optimization-record since the -Rpass
> +    // options are handled in the front-end.
> +    return MF.getFunction()->getContext().getDiagnosticsOutputFile();
>     }
>   
>   private:
>
> Removed: llvm/trunk/include/llvm/IR/DiagnosticHandler.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/DiagnosticHandler.h?rev=313386&view=auto
> ==============================================================================
> --- llvm/trunk/include/llvm/IR/DiagnosticHandler.h (original)
> +++ llvm/trunk/include/llvm/IR/DiagnosticHandler.h (removed)
> @@ -1,67 +0,0 @@
> -//===- DiagnosticHandler.h - DiagnosticHandler class for LLVM -*- C++ ---*-===//
> -//
> -//                     The LLVM Compiler Infrastructure
> -//
> -// This file is distributed under the University of Illinois Open Source
> -// License. See LICENSE.TXT for details.
> -//
> -//===----------------------------------------------------------------------===//
> -// Base DiagnosticHandler class declaration. Derive from this class to provide
> -// custom diagnostic reporting.
> -//===----------------------------------------------------------------------===//
> -
> -#include "llvm/ADT/StringRef.h"
> -
> -namespace llvm {
> -class DiagnosticInfo;
> -
> -/// \brief This is the base class for diagnostic handling in LLVM.
> -/// The handleDiagnostics method must be overriden by the subclasses to handle
> -/// diagnostic. The *RemarkEnabled methods can be overriden to control
> -/// which remarks are enabled.
> -struct DiagnosticHandler {
> -  void *DiagnosticContext = nullptr;
> -  DiagnosticHandler(void *DiagContext = nullptr)
> -      : DiagnosticContext(DiagContext) {}
> -  virtual ~DiagnosticHandler() = default;
> -
> -  using DiagnosticHandlerTy = void (*)(const DiagnosticInfo &DI, void *Context);
> -
> -  /// DiagHandlerCallback is settable from the C API and base implementation
> -  /// of DiagnosticHandler will call it from handleDiagnostics(). Any derived
> -  /// class of DiagnosticHandler should not use callback but
> -  /// implement handleDiagnostics().
> -  DiagnosticHandlerTy DiagHandlerCallback = nullptr;
> -
> -  /// Override handleDiagnostics to provide custom implementation.
> -  /// Return true if it handles diagnostics reporting properly otherwise
> -  /// return false to make LLVMContext::diagnose() to print the message
> -  /// with a prefix based on the severity.
> -  virtual bool handleDiagnostics(const DiagnosticInfo &DI) {
> -    if (DiagHandlerCallback) {
> -      DiagHandlerCallback(DI, DiagnosticContext);
> -      return true;
> -    }
> -    return false;
> -  }
> -
> -  /// Return true if analysis remarks are enabled, override
> -  /// to provide different implementation.
> -  virtual bool isAnalysisRemarkEnabled(StringRef PassName) const;
> -
> -  /// Return true if missed optimization remarks are enabled, override
> -  /// to provide different implementation.
> -  virtual bool isMissedOptRemarkEnabled(StringRef PassName) const;
> -
> -  /// Return true if passed optimization remarks are enabled, override
> -  /// to provide different implementation.
> -  virtual bool isPassedOptRemarkEnabled(StringRef PassName) const;
> -
> -  /// Return true if any type of remarks are enabled.
> -  bool isAnyRemarkEnabled(StringRef PassName) const {
> -    return (isMissedOptRemarkEnabled(PassName) ||
> -            isPassedOptRemarkEnabled(PassName) ||
> -            isAnalysisRemarkEnabled(PassName));
> -  }
> -};
> -}
>
> Modified: llvm/trunk/include/llvm/IR/DiagnosticInfo.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/DiagnosticInfo.h?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/IR/DiagnosticInfo.h (original)
> +++ llvm/trunk/include/llvm/IR/DiagnosticInfo.h Fri Sep 15 12:53:54 2017
> @@ -604,8 +604,10 @@ public:
>       return DI->getKind() == DK_OptimizationRemark;
>     }
>   
> +  static bool isEnabled(StringRef PassName);
> +
>     /// \see DiagnosticInfoOptimizationBase::isEnabled.
> -  bool isEnabled() const override;
> +  bool isEnabled() const override { return isEnabled(getPassName()); }
>   
>   private:
>     /// This is deprecated now and only used by the function API below.
> @@ -645,8 +647,10 @@ public:
>       return DI->getKind() == DK_OptimizationRemarkMissed;
>     }
>   
> +  static bool isEnabled(StringRef PassName);
> +
>     /// \see DiagnosticInfoOptimizationBase::isEnabled.
> -  bool isEnabled() const override;
> +  bool isEnabled() const override { return isEnabled(getPassName()); }
>   
>   private:
>     /// This is deprecated now and only used by the function API below.
> @@ -697,8 +701,12 @@ public:
>       return DI->getKind() == DK_OptimizationRemarkAnalysis;
>     }
>   
> +  static bool isEnabled(StringRef PassName);
> +
>     /// \see DiagnosticInfoOptimizationBase::isEnabled.
> -  bool isEnabled() const override;
> +  bool isEnabled() const override {
> +    return shouldAlwaysPrint() || isEnabled(getPassName());
> +  }
>   
>     static const char *AlwaysPrint;
>   
>
> Modified: llvm/trunk/include/llvm/IR/LLVMContext.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/LLVMContext.h?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/IR/LLVMContext.h (original)
> +++ llvm/trunk/include/llvm/IR/LLVMContext.h Fri Sep 15 12:53:54 2017
> @@ -16,7 +16,6 @@
>   #define LLVM_IR_LLVMCONTEXT_H
>   
>   #include "llvm-c/Types.h"
> -#include "llvm/IR/DiagnosticHandler.h"
>   #include "llvm/Support/CBindingWrapping.h"
>   #include "llvm/Support/Options.h"
>   #include <cstdint>
> @@ -168,6 +167,11 @@ public:
>     using InlineAsmDiagHandlerTy = void (*)(const SMDiagnostic&, void *Context,
>                                             unsigned LocCookie);
>   
> +  /// Defines the type of a diagnostic handler.
> +  /// \see LLVMContext::setDiagnosticHandler.
> +  /// \see LLVMContext::diagnose.
> +  using DiagnosticHandlerTy = void (*)(const DiagnosticInfo &DI, void *Context);
> +
>     /// Defines the type of a yield callback.
>     /// \see LLVMContext::setYieldCallback.
>     using YieldCallbackTy = void (*)(LLVMContext *Context, void *OpaqueHandle);
> @@ -190,43 +194,26 @@ public:
>     /// setInlineAsmDiagnosticHandler.
>     void *getInlineAsmDiagnosticContext() const;
>   
> -  /// setDiagnosticHandlerCallBack - This method sets a handler call back
> -  /// that is invoked when the backend needs to report anything to the user.
> -  /// The first argument is a function pointer and the second is a context pointer
> -  /// that gets passed into the DiagHandler.  The third argument should be set to
> +  /// setDiagnosticHandler - This method sets a handler that is invoked
> +  /// when the backend needs to report anything to the user.  The first
> +  /// argument is a function pointer and the second is a context pointer that
> +  /// gets passed into the DiagHandler.  The third argument should be set to
>     /// true if the handler only expects enabled diagnostics.
>     ///
>     /// LLVMContext doesn't take ownership or interpret either of these
>     /// pointers.
> -  void setDiagnosticHandlerCallBack(
> -      DiagnosticHandler::DiagnosticHandlerTy DiagHandler,
> -      void *DiagContext = nullptr, bool RespectFilters = false);
> -
> -  /// setDiagnosticHandler - This method sets unique_ptr to object of DiagnosticHandler
> -  /// to provide custom diagnostic handling. The first argument is unique_ptr of object
> -  /// of type DiagnosticHandler or a derived of that.   The third argument should be
> -  /// set to true if the handler only expects enabled diagnostics.
> -  ///
> -  /// Ownership of this pointer is moved to LLVMContextImpl.
> -  void setDiagnosticHandler(std::unique_ptr<DiagnosticHandler> &&DH,
> +  void setDiagnosticHandler(DiagnosticHandlerTy DiagHandler,
> +                            void *DiagContext = nullptr,
>                               bool RespectFilters = false);
>   
> -  /// getDiagnosticHandlerCallBack - Return the diagnostic handler call back set by
> -  /// setDiagnosticHandlerCallBack.
> -  DiagnosticHandler::DiagnosticHandlerTy getDiagnosticHandlerCallBack() const;
> +  /// getDiagnosticHandler - Return the diagnostic handler set by
> +  /// setDiagnosticHandler.
> +  DiagnosticHandlerTy getDiagnosticHandler() const;
>   
>     /// getDiagnosticContext - Return the diagnostic context set by
>     /// setDiagnosticContext.
>     void *getDiagnosticContext() const;
>   
> -  /// getDiagHandlerPtr - Returns const raw pointer of DiagnosticHandler set by
> -  /// setDiagnosticHandler.
> -  const DiagnosticHandler *getDiagHandlerPtr() const;
> -
> -  /// getDiagnosticHandler - transfers owenership of DiagnosticHandler unique_ptr
> -  /// to caller.
> -  std::unique_ptr<DiagnosticHandler> getDiagnosticHandler();
> -
>     /// \brief Return if a code hotness metric should be included in optimization
>     /// diagnostics.
>     bool getDiagnosticsHotnessRequested() const;
>
> Modified: llvm/trunk/include/llvm/LTO/Config.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/LTO/Config.h?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/LTO/Config.h (original)
> +++ llvm/trunk/include/llvm/LTO/Config.h Fri Sep 15 12:53:54 2017
> @@ -171,27 +171,20 @@ struct Config {
>                        bool UseInputModulePath = false);
>   };
>   
> -struct LTOLLVMDiagnosticHandler : public DiagnosticHandler {
> -  DiagnosticHandlerFunction *Fn;
> -  LTOLLVMDiagnosticHandler(DiagnosticHandlerFunction *DiagHandlerFn)
> -      : Fn(DiagHandlerFn) {}
> -  bool handleDiagnostics(const DiagnosticInfo &DI) override {
> -    (*Fn)(DI);
> -    return true;
> -  }
> -};
>   /// A derived class of LLVMContext that initializes itself according to a given
>   /// Config object. The purpose of this class is to tie ownership of the
>   /// diagnostic handler to the context, as opposed to the Config object (which
>   /// may be ephemeral).
> -// FIXME: This should not be required as diagnostic handler is not callback.
>   struct LTOLLVMContext : LLVMContext {
> +  static void funcDiagHandler(const DiagnosticInfo &DI, void *Context) {
> +    auto *Fn = static_cast<DiagnosticHandlerFunction *>(Context);
> +    (*Fn)(DI);
> +  }
>   
>     LTOLLVMContext(const Config &C) : DiagHandler(C.DiagHandler) {
>       setDiscardValueNames(C.ShouldDiscardValueNames);
>       enableDebugTypeODRUniquing();
> -    setDiagnosticHandler(
> -        llvm::make_unique<LTOLLVMDiagnosticHandler>(&DiagHandler), true);
> +    setDiagnosticHandler(funcDiagHandler, &DiagHandler, true);
>     }
>     DiagnosticHandlerFunction DiagHandler;
>   };
>
> Modified: llvm/trunk/include/llvm/LTO/legacy/LTOCodeGenerator.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/LTO/legacy/LTOCodeGenerator.h?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/LTO/legacy/LTOCodeGenerator.h (original)
> +++ llvm/trunk/include/llvm/LTO/legacy/LTOCodeGenerator.h Fri Sep 15 12:53:54 2017
> @@ -184,7 +184,6 @@ struct LTOCodeGenerator {
>     LLVMContext &getContext() { return Context; }
>   
>     void resetMergedModule() { MergedModule.reset(); }
> -  void DiagnosticHandler(const DiagnosticInfo &DI);
>   
>   private:
>     void initializeLTOPasses();
> @@ -205,6 +204,10 @@ private:
>     bool determineTarget();
>     std::unique_ptr<TargetMachine> createTargetMachine();
>   
> +  static void DiagnosticHandler(const DiagnosticInfo &DI, void *Context);
> +
> +  void DiagnosticHandler2(const DiagnosticInfo &DI);
> +
>     void emitError(const std::string &ErrMsg);
>     void emitWarning(const std::string &ErrMsg);
>   
>
> Modified: llvm/trunk/lib/IR/CMakeLists.txt
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/CMakeLists.txt?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/CMakeLists.txt (original)
> +++ llvm/trunk/lib/IR/CMakeLists.txt Fri Sep 15 12:53:54 2017
> @@ -17,7 +17,6 @@ add_llvm_library(LLVMCore
>     DebugInfo.cpp
>     DebugInfoMetadata.cpp
>     DebugLoc.cpp
> -  DiagnosticHandler.cpp
>     DiagnosticInfo.cpp
>     DiagnosticPrinter.cpp
>     Dominators.cpp
>
> Modified: llvm/trunk/lib/IR/Core.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Core.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/Core.cpp (original)
> +++ llvm/trunk/lib/IR/Core.cpp Fri Sep 15 12:53:54 2017
> @@ -85,15 +85,15 @@ LLVMContextRef LLVMGetGlobalContext() {
>   void LLVMContextSetDiagnosticHandler(LLVMContextRef C,
>                                        LLVMDiagnosticHandler Handler,
>                                        void *DiagnosticContext) {
> -  unwrap(C)->setDiagnosticHandlerCallBack(
> -      LLVM_EXTENSION reinterpret_cast<DiagnosticHandler::DiagnosticHandlerTy>(
> +  unwrap(C)->setDiagnosticHandler(
> +      LLVM_EXTENSION reinterpret_cast<LLVMContext::DiagnosticHandlerTy>(
>             Handler),
>         DiagnosticContext);
>   }
>   
>   LLVMDiagnosticHandler LLVMContextGetDiagnosticHandler(LLVMContextRef C) {
>     return LLVM_EXTENSION reinterpret_cast<LLVMDiagnosticHandler>(
> -      unwrap(C)->getDiagnosticHandlerCallBack());
> +      unwrap(C)->getDiagnosticHandler());
>   }
>   
>   void *LLVMContextGetDiagnosticContext(LLVMContextRef C) {
>
> Removed: llvm/trunk/lib/IR/DiagnosticHandler.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/DiagnosticHandler.cpp?rev=313386&view=auto
> ==============================================================================
> --- llvm/trunk/lib/IR/DiagnosticHandler.cpp (original)
> +++ llvm/trunk/lib/IR/DiagnosticHandler.cpp (removed)
> @@ -1,86 +0,0 @@
> -//===- DiagnosticHandler.h - DiagnosticHandler class for LLVM -------------===//
> -//
> -//                     The LLVM Compiler Infrastructure
> -//
> -// This file is distributed under the University of Illinois Open Source
> -// License. See LICENSE.TXT for details.
> -//
> -//===----------------------------------------------------------------------===//
> -//
> -//
> -//===----------------------------------------------------------------------===//
> -#include "llvm/IR/DiagnosticHandler.h"
> -#include "llvm/Support/CommandLine.h"
> -#include "llvm/Support/RegEx.h"
> -
> -using namespace llvm;
> -
> -namespace {
> -
> -/// \brief Regular expression corresponding to the value given in one of the
> -/// -pass-remarks* command line flags. Passes whose name matches this regexp
> -/// will emit a diagnostic when calling the associated diagnostic function
> -/// (emitOptimizationRemark, emitOptimizationRemarkMissed or
> -/// emitOptimizationRemarkAnalysis).
> -struct PassRemarksOpt {
> -  std::shared_ptr<Regex> Pattern;
> -
> -  void operator=(const std::string &Val) {
> -    // Create a regexp object to match pass names for emitOptimizationRemark.
> -    if (!Val.empty()) {
> -      Pattern = std::make_shared<Regex>(Val);
> -      std::string RegexError;
> -      if (!Pattern->isValid(RegexError))
> -        report_fatal_error("Invalid regular expression '" + Val +
> -                               "' in -pass-remarks: " + RegexError,
> -                           false);
> -    }
> -  }
> -};
> -
> -static PassRemarksOpt PassRemarksPassedOptLoc;
> -static PassRemarksOpt PassRemarksMissedOptLoc;
> -static PassRemarksOpt PassRemarksAnalysisOptLoc;
> -
> -// -pass-remarks
> -//    Command line flag to enable emitOptimizationRemark()
> -static cl::opt<PassRemarksOpt, true, cl::parser<std::string>> PassRemarks(
> -    "pass-remarks", cl::value_desc("pattern"),
> -    cl::desc("Enable optimization remarks from passes whose name match "
> -             "the given regular expression"),
> -    cl::Hidden, cl::location(PassRemarksPassedOptLoc), cl::ValueRequired,
> -    cl::ZeroOrMore);
> -
> -// -pass-remarks-missed
> -//    Command line flag to enable emitOptimizationRemarkMissed()
> -static cl::opt<PassRemarksOpt, true, cl::parser<std::string>> PassRemarksMissed(
> -    "pass-remarks-missed", cl::value_desc("pattern"),
> -    cl::desc("Enable missed optimization remarks from passes whose name match "
> -             "the given regular expression"),
> -    cl::Hidden, cl::location(PassRemarksMissedOptLoc), cl::ValueRequired,
> -    cl::ZeroOrMore);
> -
> -// -pass-remarks-analysis
> -//    Command line flag to enable emitOptimizationRemarkAnalysis()
> -static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
> -    PassRemarksAnalysis(
> -        "pass-remarks-analysis", cl::value_desc("pattern"),
> -        cl::desc(
> -            "Enable optimization analysis remarks from passes whose name match "
> -            "the given regular expression"),
> -        cl::Hidden, cl::location(PassRemarksAnalysisOptLoc), cl::ValueRequired,
> -        cl::ZeroOrMore);
> -}
> -
> -bool DiagnosticHandler::isAnalysisRemarkEnabled(StringRef PassName) const {
> -  return (PassRemarksAnalysisOptLoc.Pattern &&
> -          PassRemarksAnalysisOptLoc.Pattern->match(PassName));
> -}
> -bool DiagnosticHandler::isMissedOptRemarkEnabled(StringRef PassName) const {
> -  return (PassRemarksMissedOptLoc.Pattern &&
> -          PassRemarksMissedOptLoc.Pattern->match(PassName));
> -}
> -bool DiagnosticHandler::isPassedOptRemarkEnabled(StringRef PassName) const {
> -  return (PassRemarksPassedOptLoc.Pattern &&
> -          PassRemarksPassedOptLoc.Pattern->match(PassName));
> -}
>
> Modified: llvm/trunk/lib/IR/DiagnosticInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/DiagnosticInfo.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/DiagnosticInfo.cpp (original)
> +++ llvm/trunk/lib/IR/DiagnosticInfo.cpp Fri Sep 15 12:53:54 2017
> @@ -13,7 +13,6 @@
>   //===----------------------------------------------------------------------===//
>   
>   #include "llvm/IR/DiagnosticInfo.h"
> -#include "LLVMContextImpl.h"
>   #include "llvm/ADT/StringExtras.h"
>   #include "llvm/ADT/Twine.h"
>   #include "llvm/ADT/iterator_range.h"
> @@ -42,6 +41,61 @@
>   
>   using namespace llvm;
>   
> +namespace {
> +
> +/// \brief Regular expression corresponding to the value given in one of the
> +/// -pass-remarks* command line flags. Passes whose name matches this regexp
> +/// will emit a diagnostic via ORE->emit(...);
> +struct PassRemarksOpt {
> +  std::shared_ptr<Regex> Pattern;
> +
> +  void operator=(const std::string &Val) {
> +    if (!Val.empty()) {
> +      Pattern = std::make_shared<Regex>(Val);
> +      std::string RegexError;
> +      if (!Pattern->isValid(RegexError))
> +        report_fatal_error("Invalid regular expression '" + Val +
> +                               "' in -pass-remarks: " + RegexError,
> +                           false);
> +    }
> +  }
> +};
> +
> +} // end anonymous namespace
> +
> +static PassRemarksOpt PassRemarksOptLoc;
> +static PassRemarksOpt PassRemarksMissedOptLoc;
> +static PassRemarksOpt PassRemarksAnalysisOptLoc;
> +
> +// -pass-remarks
> +//    Command line flag to enable optimization remarks
> +static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
> +PassRemarks("pass-remarks", cl::value_desc("pattern"),
> +            cl::desc("Enable optimization remarks from passes whose name match "
> +                     "the given regular expression"),
> +            cl::Hidden, cl::location(PassRemarksOptLoc), cl::ValueRequired,
> +            cl::ZeroOrMore);
> +
> +// -pass-remarks-missed
> +//    Command line flag to enable missed optimization remarks
> +static cl::opt<PassRemarksOpt, true, cl::parser<std::string>> PassRemarksMissed(
> +    "pass-remarks-missed", cl::value_desc("pattern"),
> +    cl::desc("Enable missed optimization remarks from passes whose name match "
> +             "the given regular expression"),
> +    cl::Hidden, cl::location(PassRemarksMissedOptLoc), cl::ValueRequired,
> +    cl::ZeroOrMore);
> +
> +// -pass-remarks-analysis
> +//    Command line flag to enable optimization analysis remarks
> +static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
> +PassRemarksAnalysis(
> +    "pass-remarks-analysis", cl::value_desc("pattern"),
> +    cl::desc(
> +        "Enable optimization analysis remarks from passes whose name match "
> +        "the given regular expression"),
> +    cl::Hidden, cl::location(PassRemarksAnalysisOptLoc), cl::ValueRequired,
> +    cl::ZeroOrMore);
> +
>   int llvm::getNextAvailablePluginDiagnosticKind() {
>     static std::atomic<int> PluginKindID(DK_FirstPluginKind);
>     return ++PluginKindID;
> @@ -229,10 +283,9 @@ OptimizationRemark::OptimizationRemark(c
>                                      RemarkName, *Func, Func->getSubprogram(),
>                                      &getFirstFunctionBlock(Func)) {}
>   
> -bool OptimizationRemark::isEnabled() const {
> -  const Function &Fn = getFunction();
> -  LLVMContext &Ctx = Fn.getContext();
> -  return Ctx.getDiagHandlerPtr()->isPassedOptRemarkEnabled(getPassName());
> +bool OptimizationRemark::isEnabled(StringRef PassName) {
> +  return PassRemarksOptLoc.Pattern &&
> +         PassRemarksOptLoc.Pattern->match(PassName);
>   }
>   
>   OptimizationRemarkMissed::OptimizationRemarkMissed(
> @@ -250,10 +303,9 @@ OptimizationRemarkMissed::OptimizationRe
>                                      *Inst->getParent()->getParent(),
>                                      Inst->getDebugLoc(), Inst->getParent()) {}
>   
> -bool OptimizationRemarkMissed::isEnabled() const {
> -  const Function &Fn = getFunction();
> -  LLVMContext &Ctx = Fn.getContext();
> -  return Ctx.getDiagHandlerPtr()->isMissedOptRemarkEnabled(getPassName());
> +bool OptimizationRemarkMissed::isEnabled(StringRef PassName) {
> +  return PassRemarksMissedOptLoc.Pattern &&
> +         PassRemarksMissedOptLoc.Pattern->match(PassName);
>   }
>   
>   OptimizationRemarkAnalysis::OptimizationRemarkAnalysis(
> @@ -278,11 +330,9 @@ OptimizationRemarkAnalysis::Optimization
>                                      *cast<BasicBlock>(CodeRegion)->getParent(),
>                                      Loc, CodeRegion) {}
>   
> -bool OptimizationRemarkAnalysis::isEnabled() const {
> -  const Function &Fn = getFunction();
> -  LLVMContext &Ctx = Fn.getContext();
> -  return Ctx.getDiagHandlerPtr()->isAnalysisRemarkEnabled(getPassName()) ||
> -         shouldAlwaysPrint();
> +bool OptimizationRemarkAnalysis::isEnabled(StringRef PassName) {
> +  return PassRemarksAnalysisOptLoc.Pattern &&
> +         PassRemarksAnalysisOptLoc.Pattern->match(PassName);
>   }
>   
>   void DiagnosticInfoMIRParser::print(DiagnosticPrinter &DP) const {
>
> Modified: llvm/trunk/lib/IR/LLVMContext.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/LLVMContext.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/LLVMContext.cpp (original)
> +++ llvm/trunk/lib/IR/LLVMContext.cpp Fri Sep 15 12:53:54 2017
> @@ -129,17 +129,11 @@ void *LLVMContext::getInlineAsmDiagnosti
>     return pImpl->InlineAsmDiagContext;
>   }
>   
> -void LLVMContext::setDiagnosticHandlerCallBack(
> -    DiagnosticHandler::DiagnosticHandlerTy DiagnosticHandler,
> -    void *DiagnosticContext, bool RespectFilters) {
> -  pImpl->DiagHandler->DiagHandlerCallback = DiagnosticHandler;
> -  pImpl->DiagHandler->DiagnosticContext = DiagnosticContext;
> -  pImpl->RespectDiagnosticFilters = RespectFilters;
> -}
> -
> -void LLVMContext::setDiagnosticHandler(std::unique_ptr<DiagnosticHandler> &&DH,
> -                                      bool RespectFilters) {
> -  pImpl->DiagHandler = std::move(DH);
> +void LLVMContext::setDiagnosticHandler(DiagnosticHandlerTy DiagnosticHandler,
> +                                       void *DiagnosticContext,
> +                                       bool RespectFilters) {
> +  pImpl->DiagnosticHandler = DiagnosticHandler;
> +  pImpl->DiagnosticContext = DiagnosticContext;
>     pImpl->RespectDiagnosticFilters = RespectFilters;
>   }
>   
> @@ -165,13 +159,12 @@ void LLVMContext::setDiagnosticsOutputFi
>     pImpl->DiagnosticsOutputFile = std::move(F);
>   }
>   
> -DiagnosticHandler::DiagnosticHandlerTy
> -LLVMContext::getDiagnosticHandlerCallBack() const {
> -  return pImpl->DiagHandler->DiagHandlerCallback;
> +LLVMContext::DiagnosticHandlerTy LLVMContext::getDiagnosticHandler() const {
> +  return pImpl->DiagnosticHandler;
>   }
>   
>   void *LLVMContext::getDiagnosticContext() const {
> -  return pImpl->DiagHandler->DiagnosticContext;
> +  return pImpl->DiagnosticContext;
>   }
>   
>   void LLVMContext::setYieldCallback(YieldCallbackTy Callback, void *OpaqueHandle)
> @@ -222,10 +215,11 @@ LLVMContext::getDiagnosticMessagePrefix(
>   
>   void LLVMContext::diagnose(const DiagnosticInfo &DI) {
>     // If there is a report handler, use it.
> -  if (pImpl->DiagHandler &&
> -      (!pImpl->RespectDiagnosticFilters || isDiagnosticEnabled(DI)) &&
> -      pImpl->DiagHandler->handleDiagnostics(DI))
> +  if (pImpl->DiagnosticHandler) {
> +    if (!pImpl->RespectDiagnosticFilters || isDiagnosticEnabled(DI))
> +      pImpl->DiagnosticHandler(DI, pImpl->DiagnosticContext);
>       return;
> +  }
>   
>     if (!isDiagnosticEnabled(DI))
>       return;
> @@ -321,11 +315,3 @@ void LLVMContext::setDiscardValueNames(b
>   OptBisect &LLVMContext::getOptBisect() {
>     return pImpl->getOptBisect();
>   }
> -
> -const DiagnosticHandler *LLVMContext::getDiagHandlerPtr() const {
> -  return pImpl->DiagHandler.get();
> -}
> -
> -std::unique_ptr<DiagnosticHandler> LLVMContext::getDiagnosticHandler() {
> -  return std::move(pImpl->DiagHandler);
> -}
>
> Modified: llvm/trunk/lib/IR/LLVMContextImpl.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/LLVMContextImpl.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/LLVMContextImpl.cpp (original)
> +++ llvm/trunk/lib/IR/LLVMContextImpl.cpp Fri Sep 15 12:53:54 2017
> @@ -22,8 +22,7 @@
>   using namespace llvm;
>   
>   LLVMContextImpl::LLVMContextImpl(LLVMContext &C)
> -  : DiagHandler(llvm::make_unique<DiagnosticHandler>()),
> -    VoidTy(C, Type::VoidTyID),
> +  : VoidTy(C, Type::VoidTyID),
>       LabelTy(C, Type::LabelTyID),
>       HalfTy(C, Type::HalfTyID),
>       FloatTy(C, Type::FloatTyID),
>
> Modified: llvm/trunk/lib/IR/LLVMContextImpl.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/LLVMContextImpl.h?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/LLVMContextImpl.h (original)
> +++ llvm/trunk/lib/IR/LLVMContextImpl.h Fri Sep 15 12:53:54 2017
> @@ -1168,7 +1168,8 @@ public:
>     LLVMContext::InlineAsmDiagHandlerTy InlineAsmDiagHandler = nullptr;
>     void *InlineAsmDiagContext = nullptr;
>   
> -  std::unique_ptr<DiagnosticHandler> DiagHandler;
> +  LLVMContext::DiagnosticHandlerTy DiagnosticHandler = nullptr;
> +  void *DiagnosticContext = nullptr;
>     bool RespectDiagnosticFilters = false;
>     bool DiagnosticsHotnessRequested = false;
>     uint64_t DiagnosticsHotnessThreshold = 0;
>
> Modified: llvm/trunk/lib/LTO/LTOCodeGenerator.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/LTO/LTOCodeGenerator.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/LTO/LTOCodeGenerator.cpp (original)
> +++ llvm/trunk/lib/LTO/LTOCodeGenerator.cpp Fri Sep 15 12:53:54 2017
> @@ -622,8 +622,12 @@ void LTOCodeGenerator::parseCodeGenDebug
>     }
>   }
>   
> +void LTOCodeGenerator::DiagnosticHandler(const DiagnosticInfo &DI,
> +                                         void *Context) {
> +  ((LTOCodeGenerator *)Context)->DiagnosticHandler2(DI);
> +}
>   
> -void LTOCodeGenerator::DiagnosticHandler(const DiagnosticInfo &DI) {
> +void LTOCodeGenerator::DiagnosticHandler2(const DiagnosticInfo &DI) {
>     // Map the LLVM internal diagnostic severity to the LTO diagnostic severity.
>     lto_codegen_diagnostic_severity_t Severity;
>     switch (DI.getSeverity()) {
> @@ -653,29 +657,17 @@ void LTOCodeGenerator::DiagnosticHandler
>     (*DiagHandler)(Severity, MsgStorage.c_str(), DiagContext);
>   }
>   
> -namespace {
> -struct LTODiagnosticHandler : public DiagnosticHandler {
> -  LTOCodeGenerator *CodeGenerator;
> -  LTODiagnosticHandler(LTOCodeGenerator *CodeGenPtr)
> -      : CodeGenerator(CodeGenPtr) {}
> -  bool handleDiagnostics(const DiagnosticInfo &DI) override {
> -    CodeGenerator->DiagnosticHandler(DI);
> -    return true;
> -  }
> -};
> -}
> -
>   void
>   LTOCodeGenerator::setDiagnosticHandler(lto_diagnostic_handler_t DiagHandler,
>                                          void *Ctxt) {
>     this->DiagHandler = DiagHandler;
>     this->DiagContext = Ctxt;
>     if (!DiagHandler)
> -    return Context.setDiagnosticHandler(nullptr);
> +    return Context.setDiagnosticHandler(nullptr, nullptr);
>     // Register the LTOCodeGenerator stub in the LLVMContext to forward the
>     // diagnostic to the external DiagHandler.
> -  Context.setDiagnosticHandler(llvm::make_unique<LTODiagnosticHandler>(this),
> -                               true);
> +  Context.setDiagnosticHandler(LTOCodeGenerator::DiagnosticHandler, this,
> +                               /* RespectFilters */ true);
>   }
>   
>   namespace {
>
> Modified: llvm/trunk/lib/Transforms/Scalar/GVN.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/GVN.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Transforms/Scalar/GVN.cpp (original)
> +++ llvm/trunk/lib/Transforms/Scalar/GVN.cpp Fri Sep 15 12:53:54 2017
> @@ -920,7 +920,8 @@ bool GVN::AnalyzeLoadAvailability(LoadIn
>         Instruction *I = DepInfo.getInst();
>         dbgs() << " is clobbered by " << *I << '\n';
>       );
> -    if (ORE->allowExtraAnalysis(DEBUG_TYPE))
> +
> +    if (ORE->allowExtraAnalysis())
>         reportMayClobberedLoad(LI, DepInfo, DT, ORE);
>   
>       return false;
>
> Modified: llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp (original)
> +++ llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp Fri Sep 15 12:53:54 2017
> @@ -4957,15 +4957,12 @@ bool LoopVectorizationLegality::canVecto
>     // Store the result and return it at the end instead of exiting early, in case
>     // allowExtraAnalysis is used to report multiple reasons for not vectorizing.
>     bool Result = true;
> -
> -  bool DoExtraAnalysis = ORE->allowExtraAnalysis(DEBUG_TYPE);
> -  if (DoExtraAnalysis)
>     // We must have a loop in canonical form. Loops with indirectbr in them cannot
>     // be canonicalized.
>     if (!TheLoop->getLoopPreheader()) {
>       ORE->emit(createMissedAnalysis("CFGNotUnderstood")
>                 << "loop control flow is not understood by vectorizer");
> -  if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -4978,7 +4975,7 @@ bool LoopVectorizationLegality::canVecto
>     if (!TheLoop->empty()) {
>       ORE->emit(createMissedAnalysis("NotInnermostLoop")
>                 << "loop is not the innermost loop");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -4988,7 +4985,7 @@ bool LoopVectorizationLegality::canVecto
>     if (TheLoop->getNumBackEdges() != 1) {
>       ORE->emit(createMissedAnalysis("CFGNotUnderstood")
>                 << "loop control flow is not understood by vectorizer");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -4998,7 +4995,7 @@ bool LoopVectorizationLegality::canVecto
>     if (!TheLoop->getExitingBlock()) {
>       ORE->emit(createMissedAnalysis("CFGNotUnderstood")
>                 << "loop control flow is not understood by vectorizer");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -5010,7 +5007,7 @@ bool LoopVectorizationLegality::canVecto
>     if (TheLoop->getExitingBlock() != TheLoop->getLoopLatch()) {
>       ORE->emit(createMissedAnalysis("CFGNotUnderstood")
>                 << "loop control flow is not understood by vectorizer");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -5024,7 +5021,7 @@ bool LoopVectorizationLegality::canVecto
>     unsigned NumBlocks = TheLoop->getNumBlocks();
>     if (NumBlocks != 1 && !canVectorizeWithIfConvert()) {
>       DEBUG(dbgs() << "LV: Can't if-convert the loop.\n");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -5033,7 +5030,7 @@ bool LoopVectorizationLegality::canVecto
>     // Check if we can vectorize the instructions and CFG in this loop.
>     if (!canVectorizeInstrs()) {
>       DEBUG(dbgs() << "LV: Can't vectorize the instructions or CFG\n");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -5042,7 +5039,7 @@ bool LoopVectorizationLegality::canVecto
>     // Go over each instruction and look at memory deps.
>     if (!canVectorizeMemory()) {
>       DEBUG(dbgs() << "LV: Can't vectorize due to memory conflicts\n");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
> @@ -5073,7 +5070,7 @@ bool LoopVectorizationLegality::canVecto
>                 << "Too many SCEV assumptions need to be made and checked "
>                 << "at runtime");
>       DEBUG(dbgs() << "LV: Too many SCEV checks needed.\n");
> -    if (DoExtraAnalysis)
> +    if (ORE->allowExtraAnalysis())
>         Result = false;
>       else
>         return false;
>
> Modified: llvm/trunk/test/Transforms/GVN/opt-remarks.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/GVN/opt-remarks.ll?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/test/Transforms/GVN/opt-remarks.ll (original)
> +++ llvm/trunk/test/Transforms/GVN/opt-remarks.ll Fri Sep 15 12:53:54 2017
> @@ -11,7 +11,7 @@
>   ; CHECK:      remark: <unknown>:0:0: load of type i32 eliminated{{$}}
>   ; CHECK-NEXT: remark: <unknown>:0:0: load of type i32 eliminated{{$}}
>   ; CHECK-NEXT: remark: <unknown>:0:0: load of type i32 eliminated{{$}}
> -; CHECK-NEXT: remark: /tmp/s.c:3:3: load of type i32 not eliminated
> +; CHECK-NOT:  remark:
>   
>   ; YAML:      --- !Passed
>   ; YAML-NEXT: Pass:            gvn
>
> Modified: llvm/trunk/tools/llc/llc.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llc/llc.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llc/llc.cpp (original)
> +++ llvm/trunk/tools/llc/llc.cpp Fri Sep 15 12:53:54 2017
> @@ -235,24 +235,20 @@ GetOutputStream(const char *TargetName,
>     return FDOut;
>   }
>   
> -struct LLCDiagnosticHandler : public DiagnosticHandler {
> -  bool *HasError;
> -  LLCDiagnosticHandler(bool *HasErrorPtr) : HasError(HasErrorPtr) {}
> -  bool handleDiagnostics(const DiagnosticInfo &DI) override {
> -    if (DI.getSeverity() == DS_Error)
> -      *HasError = true;
> -
> -    if (auto *Remark = dyn_cast<DiagnosticInfoOptimizationBase>(&DI))
> -      if (!Remark->isEnabled())
> -        return true;
> -
> -    DiagnosticPrinterRawOStream DP(errs());
> -    errs() << LLVMContext::getDiagnosticMessagePrefix(DI.getSeverity()) << ": ";
> -    DI.print(DP);
> -    errs() << "\n";
> -    return true;
> -  }
> -};
> +static void DiagnosticHandler(const DiagnosticInfo &DI, void *Context) {
> +  bool *HasError = static_cast<bool *>(Context);
> +  if (DI.getSeverity() == DS_Error)
> +    *HasError = true;
> +
> +  if (auto *Remark = dyn_cast<DiagnosticInfoOptimizationBase>(&DI))
> +    if (!Remark->isEnabled())
> +      return;
> +
> +  DiagnosticPrinterRawOStream DP(errs());
> +  errs() << LLVMContext::getDiagnosticMessagePrefix(DI.getSeverity()) << ": ";
> +  DI.print(DP);
> +  errs() << "\n";
> +}
>   
>   static void InlineAsmDiagHandler(const SMDiagnostic &SMD, void *Context,
>                                    unsigned LocCookie) {
> @@ -312,8 +308,7 @@ int main(int argc, char **argv) {
>   
>     // Set a diagnostic handler that doesn't exit on the first error
>     bool HasError = false;
> -  Context.setDiagnosticHandler(
> -      llvm::make_unique<LLCDiagnosticHandler>(&HasError));
> +  Context.setDiagnosticHandler(DiagnosticHandler, &HasError);
>     Context.setInlineAsmDiagnosticHandler(InlineAsmDiagHandler, &HasError);
>   
>     if (PassRemarksWithHotness)
> @@ -569,9 +564,8 @@ static int compileModule(char **argv, LL
>   
>       PM.run(*M);
>   
> -    auto HasError =
> -        ((const LLCDiagnosticHandler *)(Context.getDiagHandlerPtr()))->HasError;
> -    if (*HasError)
> +    auto HasError = *static_cast<bool *>(Context.getDiagnosticContext());
> +    if (HasError)
>         return 1;
>   
>       // Compare the two outputs and make sure they're the same
>
> Modified: llvm/trunk/tools/llvm-dis/llvm-dis.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-dis/llvm-dis.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llvm-dis/llvm-dis.cpp (original)
> +++ llvm/trunk/tools/llvm-dis/llvm-dis.cpp Fri Sep 15 12:53:54 2017
> @@ -122,30 +122,26 @@ public:
>     }
>   };
>   
> -struct LLVMDisDiagnosticHandler : public DiagnosticHandler {
> -  char *Prefix;
> -  LLVMDisDiagnosticHandler(char *PrefixPtr) : Prefix(PrefixPtr) {}
> -  bool handleDiagnostics(const DiagnosticInfo &DI) override {
> -    raw_ostream &OS = errs();
> -    OS << Prefix << ": ";
> -    switch (DI.getSeverity()) {
> -      case DS_Error: OS << "error: "; break;
> -      case DS_Warning: OS << "warning: "; break;
> -      case DS_Remark: OS << "remark: "; break;
> -      case DS_Note: OS << "note: "; break;
> -    }
> -
> -    DiagnosticPrinterRawOStream DP(OS);
> -    DI.print(DP);
> -    OS << '\n';
> -
> -    if (DI.getSeverity() == DS_Error)
> -      exit(1);
> -    return true;
> -  }
> -};
>   } // end anon namespace
>   
> +static void diagnosticHandler(const DiagnosticInfo &DI, void *Context) {
> +  raw_ostream &OS = errs();
> +  OS << (char *)Context << ": ";
> +  switch (DI.getSeverity()) {
> +  case DS_Error: OS << "error: "; break;
> +  case DS_Warning: OS << "warning: "; break;
> +  case DS_Remark: OS << "remark: "; break;
> +  case DS_Note: OS << "note: "; break;
> +  }
> +
> +  DiagnosticPrinterRawOStream DP(OS);
> +  DI.print(DP);
> +  OS << '\n';
> +
> +  if (DI.getSeverity() == DS_Error)
> +    exit(1);
> +}
> +
>   static ExitOnError ExitOnErr;
>   
>   static std::unique_ptr<Module> openInputFile(LLVMContext &Context) {
> @@ -170,8 +166,9 @@ int main(int argc, char **argv) {
>   
>     LLVMContext Context;
>     llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
> -  Context.setDiagnosticHandler(
> -      llvm::make_unique<LLVMDisDiagnosticHandler>(argv[0]));
> +
> +  Context.setDiagnosticHandler(diagnosticHandler, argv[0]);
> +
>     cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
>   
>     std::unique_ptr<Module> M = openInputFile(Context);
>
> Modified: llvm/trunk/tools/llvm-link/llvm-link.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-link/llvm-link.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llvm-link/llvm-link.cpp (original)
> +++ llvm/trunk/tools/llvm-link/llvm-link.cpp Fri Sep 15 12:53:54 2017
> @@ -182,30 +182,25 @@ Module &ModuleLazyLoaderCache::operator(
>   }
>   } // anonymous namespace
>   
> -namespace {
> -struct LLVMLinkDiagnosticHandler : public DiagnosticHandler {
> -  bool handleDiagnostics(const DiagnosticInfo &DI) override {
> -    unsigned Severity = DI.getSeverity();
> -    switch (Severity) {
> -    case DS_Error:
> -      errs() << "ERROR: ";
> -      break;
> -    case DS_Warning:
> -      if (SuppressWarnings)
> -        return true;
> -      errs() << "WARNING: ";
> -      break;
> -    case DS_Remark:
> -    case DS_Note:
> -      llvm_unreachable("Only expecting warnings and errors");
> -    }
> -
> -    DiagnosticPrinterRawOStream DP(errs());
> -    DI.print(DP);
> -    errs() << '\n';
> -    return true;
> +static void diagnosticHandler(const DiagnosticInfo &DI, void *C) {
> +  unsigned Severity = DI.getSeverity();
> +  switch (Severity) {
> +  case DS_Error:
> +    errs() << "ERROR: ";
> +    break;
> +  case DS_Warning:
> +    if (SuppressWarnings)
> +      return;
> +    errs() << "WARNING: ";
> +    break;
> +  case DS_Remark:
> +  case DS_Note:
> +    llvm_unreachable("Only expecting warnings and errors");
>     }
> -};
> +
> +  DiagnosticPrinterRawOStream DP(errs());
> +  DI.print(DP);
> +  errs() << '\n';
>   }
>   
>   /// Import any functions requested via the -import option.
> @@ -352,8 +347,8 @@ int main(int argc, char **argv) {
>     ExitOnErr.setBanner(std::string(argv[0]) + ": ");
>   
>     LLVMContext Context;
> -  Context.setDiagnosticHandler(
> -    llvm::make_unique<LLVMLinkDiagnosticHandler>(), true);
> +  Context.setDiagnosticHandler(diagnosticHandler, nullptr, true);
> +
>     llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
>     cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");
>   
>
> Modified: llvm/trunk/tools/llvm-lto/llvm-lto.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-lto/llvm-lto.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llvm-lto/llvm-lto.cpp (original)
> +++ llvm/trunk/tools/llvm-lto/llvm-lto.cpp Fri Sep 15 12:53:54 2017
> @@ -235,40 +235,34 @@ static void handleDiagnostics(lto_codege
>   }
>   
>   static std::string CurrentActivity;
> +static void diagnosticHandler(const DiagnosticInfo &DI, void *Context) {
> +  raw_ostream &OS = errs();
> +  OS << "llvm-lto: ";
> +  switch (DI.getSeverity()) {
> +  case DS_Error:
> +    OS << "error";
> +    break;
> +  case DS_Warning:
> +    OS << "warning";
> +    break;
> +  case DS_Remark:
> +    OS << "remark";
> +    break;
> +  case DS_Note:
> +    OS << "note";
> +    break;
> +  }
> +  if (!CurrentActivity.empty())
> +    OS << ' ' << CurrentActivity;
> +  OS << ": ";
> +
> +  DiagnosticPrinterRawOStream DP(OS);
> +  DI.print(DP);
> +  OS << '\n';
>   
> -namespace {
> -  struct LLVMLTODiagnosticHandler : public DiagnosticHandler {
> -    bool handleDiagnostics(const DiagnosticInfo &DI) override {
> -      raw_ostream &OS = errs();
> -      OS << "llvm-lto: ";
> -      switch (DI.getSeverity()) {
> -      case DS_Error:
> -        OS << "error";
> -        break;
> -      case DS_Warning:
> -        OS << "warning";
> -        break;
> -      case DS_Remark:
> -        OS << "remark";
> -        break;
> -      case DS_Note:
> -        OS << "note";
> -        break;
> -      }
> -      if (!CurrentActivity.empty())
> -        OS << ' ' << CurrentActivity;
> -      OS << ": ";
> -
> -      DiagnosticPrinterRawOStream DP(OS);
> -      DI.print(DP);
> -      OS << '\n';
> -
> -      if (DI.getSeverity() == DS_Error)
> -        exit(1);
> -      return true;
> -    }
> -  };
> -  }
> +  if (DI.getSeverity() == DS_Error)
> +    exit(1);
> +}
>   
>   static void error(const Twine &Msg) {
>     errs() << "llvm-lto: " << Msg << '\n';
> @@ -299,8 +293,7 @@ getLocalLTOModule(StringRef Path, std::u
>     Buffer = std::move(BufferOrErr.get());
>     CurrentActivity = ("loading file '" + Path + "'").str();
>     std::unique_ptr<LLVMContext> Context = llvm::make_unique<LLVMContext>();
> -  Context->setDiagnosticHandler(llvm::make_unique<LLVMLTODiagnosticHandler>(),
> -                                true);
> +  Context->setDiagnosticHandler(diagnosticHandler, nullptr, true);
>     ErrorOr<std::unique_ptr<LTOModule>> Ret = LTOModule::createInLocalContext(
>         std::move(Context), Buffer->getBufferStart(), Buffer->getBufferSize(),
>         Options, Path);
> @@ -844,8 +837,7 @@ int main(int argc, char **argv) {
>     unsigned BaseArg = 0;
>   
>     LLVMContext Context;
> -  Context.setDiagnosticHandler(llvm::make_unique<LLVMLTODiagnosticHandler>(),
> -                               true);
> +  Context.setDiagnosticHandler(diagnosticHandler, nullptr, true);
>   
>     LTOCodeGenerator CodeGen(Context);
>   
>
> Modified: llvm/trunk/tools/lto/lto.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/lto/lto.cpp?rev=313387&r1=313386&r2=313387&view=diff
> ==============================================================================
> --- llvm/trunk/tools/lto/lto.cpp (original)
> +++ llvm/trunk/tools/lto/lto.cpp Fri Sep 15 12:53:54 2017
> @@ -75,23 +75,20 @@ static bool parsedOptions = false;
>   
>   static LLVMContext *LTOContext = nullptr;
>   
> -struct LTOToolDiagnosticHandler : public DiagnosticHandler {
> -  bool handleDiagnostics(const DiagnosticInfo &DI) override {
> -    if (DI.getSeverity() != DS_Error) {
> -      DiagnosticPrinterRawOStream DP(errs());
> -      DI.print(DP);
> -      errs() << '\n';
> -      return true;
> -    }
> -    sLastErrorString = "";
> -    {
> -      raw_string_ostream Stream(sLastErrorString);
> -      DiagnosticPrinterRawOStream DP(Stream);
> -      DI.print(DP);
> -    }
> -    return true;
> +static void diagnosticHandler(const DiagnosticInfo &DI, void *Context) {
> +  if (DI.getSeverity() != DS_Error) {
> +    DiagnosticPrinterRawOStream DP(errs());
> +    DI.print(DP);
> +    errs() << '\n';
> +    return;
>     }
> -};
> +  sLastErrorString = "";
> +  {
> +    raw_string_ostream Stream(sLastErrorString);
> +    DiagnosticPrinterRawOStream DP(Stream);
> +    DI.print(DP);
> +  }
> +}
>   
>   // Initialize the configured targets if they have not been initialized.
>   static void lto_initialize() {
> @@ -111,8 +108,7 @@ static void lto_initialize() {
>   
>       static LLVMContext Context;
>       LTOContext = &Context;
> -    LTOContext->setDiagnosticHandler(
> -        llvm::make_unique<LTOToolDiagnosticHandler>(), true);
> +    LTOContext->setDiagnosticHandler(diagnosticHandler, nullptr, true);
>       initialized = true;
>     }
>   }
> @@ -278,8 +274,7 @@ lto_module_t lto_module_create_in_local_
>   
>     // Create a local context. Ownership will be transferred to LTOModule.
>     std::unique_ptr<LLVMContext> Context = llvm::make_unique<LLVMContext>();
> -  Context->setDiagnosticHandler(llvm::make_unique<LTOToolDiagnosticHandler>(),
> -                                true);
> +  Context->setDiagnosticHandler(diagnosticHandler, nullptr, true);
>   
>     ErrorOr<std::unique_ptr<LTOModule>> M = LTOModule::createInLocalContext(
>         std::move(Context), mem, length, Options, StringRef(path));
>
>
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