Automerge: [ORC] Remove now unused EPCDebugObjectRegistrar (NFC) (#167868)

EPCDebugObjectRegistrar is unused now that the ELF debugger support plugin uses AllocActions
llvm/llvm-project#167866

Author: weliveindetail

clang/lib/Interpreter/IncrementalExecutor.cpp

@@ -19,7 +19,6 @@
 #include "llvm/ExecutionEngine/ExecutionEngine.h"
 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
 #include "llvm/ExecutionEngine/Orc/Debugging/DebuggerSupport.h"
-#include "llvm/ExecutionEngine/Orc/EPCDebugObjectRegistrar.h"
 #include "llvm/ExecutionEngine/Orc/EPCDynamicLibrarySearchGenerator.h"
 #include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
@@ -47,8 +46,7 @@
 
 // Force linking some of the runtimes that helps attaching to a debugger.
 LLVM_ATTRIBUTE_USED void linkComponents() {
-  llvm::errs() << (void *)&llvm_orc_registerJITLoaderGDBWrapper
-               << (void *)&llvm_orc_registerJITLoaderGDBAllocAction;
+  llvm::errs() << (void *)&llvm_orc_registerJITLoaderGDBAllocAction;
 }
 
 namespace clang {

llvm/include/llvm-c/LLJITUtils.h

@@ -40,7 +40,7 @@ LLVM_C_EXTERN_C_BEGIN
 
 /**
  * Install the plugin that submits debug objects to the executor. Executors must
- * expose the llvm_orc_registerJITLoaderGDBWrapper symbol.
+ * expose the llvm_orc_registerJITLoaderGDBAllocAction symbol.
  */
 LLVM_C_ABI LLVMErrorRef LLVMOrcLLJITEnableDebugSupport(LLVMOrcLLJITRef J);
 

llvm/include/llvm/ExecutionEngine/Orc/Debugging/DebuggerSupportPlugin.h

@@ -14,7 +14,6 @@
 #define LLVM_EXECUTIONENGINE_ORC_DEBUGGERSUPPORTPLUGIN_H
 
 #include "llvm/ExecutionEngine/Orc/Core.h"
-#include "llvm/ExecutionEngine/Orc/EPCDebugObjectRegistrar.h"
 #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
 #include "llvm/Support/Compiler.h"
 

llvm/include/llvm/ExecutionEngine/Orc/EPCDebugObjectRegistrar.h

@@ -43,9 +43,6 @@ struct jit_descriptor {
 };
 }
 
-extern "C" LLVM_ABI llvm::orc::shared::CWrapperFunctionResult
-llvm_orc_registerJITLoaderGDBWrapper(const char *ArgData, size_t ArgSize);
-
 extern "C" LLVM_ABI llvm::orc::shared::CWrapperFunctionResult
 llvm_orc_registerJITLoaderGDBAllocAction(const char *ArgData, size_t ArgSize);
 

llvm/include/llvm/ExecutionEngine/Orc/TargetProcess/JITLoaderGDB.h

@@ -17,7 +17,6 @@ add_llvm_component_library(LLVMOrcJIT
   DebugUtils.cpp
   EHFrameRegistrationPlugin.cpp
   EPCDynamicLibrarySearchGenerator.cpp
-  EPCDebugObjectRegistrar.cpp
   EPCGenericDylibManager.cpp
   EPCGenericJITLinkMemoryManager.cpp
   EPCGenericRTDyldMemoryManager.cpp

llvm/lib/ExecutionEngine/Orc/CMakeLists.txt

@@ -88,19 +88,3 @@ llvm_orc_registerJITLoaderGDBAllocAction(const char *ArgData, size_t ArgSize) {
              })
       .release();
 }
-
-extern "C" orc::shared::CWrapperFunctionResult
-llvm_orc_registerJITLoaderGDBWrapper(const char *ArgData, size_t ArgSize) {
-  using namespace orc::shared;
-  return WrapperFunction<SPSError(SPSExecutorAddrRange, bool)>::handle(
-             ArgData, ArgSize,
-             [](ExecutorAddrRange R, bool AutoRegisterCode) {
-               appendJITDebugDescriptor(R.Start.toPtr<const char *>(),
-                                        R.size());
-               // Run into the rendezvous breakpoint.
-               if (AutoRegisterCode)
-                 __jit_debug_register_code();
-               return Error::success();
-             })
-      .release();
-}

llvm/lib/ExecutionEngine/Orc/EPCDebugObjectRegistrar.cpp

@@ -283,7 +283,6 @@ static ExitOnError ExitOnErr;
 LLVM_ATTRIBUTE_USED static void linkComponents() {
   errs() << (void *)&llvm_orc_registerEHFrameSectionAllocAction
          << (void *)&llvm_orc_deregisterEHFrameSectionAllocAction
-         << (void *)&llvm_orc_registerJITLoaderGDBWrapper
          << (void *)&llvm_orc_registerJITLoaderGDBAllocAction;
 }
 

llvm/lib/ExecutionEngine/Orc/TargetProcess/JITLoaderGDB.cpp

@@ -44,7 +44,6 @@ ExitOnError ExitOnErr;
 LLVM_ATTRIBUTE_USED void linkComponents() {
   errs() << (void *)&llvm_orc_registerEHFrameSectionAllocAction
          << (void *)&llvm_orc_deregisterEHFrameSectionAllocAction
-         << (void *)&llvm_orc_registerJITLoaderGDBWrapper
          << (void *)&llvm_orc_registerJITLoaderGDBAllocAction;
 }