[Clang] Remove ARCMigrate #119269
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[Clang] Remove ARCMigrate #119269
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@llvm/pr-subscribers-clang-static-analyzer-1 @llvm/pr-subscribers-clang Author: None (Sirraide) ChangesIn the discussion around #116792, @rjmccall mentioned that ARCMigrate has been obsoleted and that we could go ahead and remove it from Clang, so this patch does just that. I searched for every mention of ‘ARCMT’/‘ARCMigrate’/‘ObjCRewrite’ and removed everything that seemed related to what I was able to find. I also had to touch a bunch of bazel and gn build scripts as part of this, neither of which I’m familiar with so it’s possible that I missed something there. Patch is 1.49 MiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/119269.diff 383 Files Affected:
diff --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
index 27e8095534a65c..7050746e3a0380 100644
--- a/clang/CMakeLists.txt
+++ b/clang/CMakeLists.txt
@@ -432,20 +432,11 @@ if(NOT LLVM_STATIC_LINK_CXX_STDLIB)
set(HAVE_CLANG_REPL_SUPPORT ON)
endif()
-option(CLANG_ENABLE_ARCMT "Build ARCMT." ON)
option(CLANG_ENABLE_STATIC_ANALYZER
"Include static analyzer in clang binary." ON)
option(CLANG_ENABLE_PROTO_FUZZER "Build Clang protobuf fuzzer." OFF)
-if(NOT CLANG_ENABLE_STATIC_ANALYZER AND CLANG_ENABLE_ARCMT)
- message(FATAL_ERROR "Cannot disable static analyzer while enabling ARCMT or Z3")
-endif()
-
-if(CLANG_ENABLE_ARCMT)
- set(CLANG_ENABLE_OBJC_REWRITER ON)
-endif()
-
# This option is a stop-gap, we should commit to removing this as
# soon as possible. See discussion:
# https://discourse.llvm.org/t/rationale-for-removing-versioned-libclang-middle-ground-to-keep-it-behind-option/
diff --git a/clang/cmake/caches/Android.cmake b/clang/cmake/caches/Android.cmake
index d5ca6b50d4ada7..c89e31f67cc9b1 100644
--- a/clang/cmake/caches/Android.cmake
+++ b/clang/cmake/caches/Android.cmake
@@ -2,7 +2,6 @@
set(LLVM_TARGETS_TO_BUILD X86 CACHE STRING "")
-set(CLANG_ENABLE_ARCMT OFF CACHE BOOL "")
set(CLANG_ENABLE_STATIC_ANALYZER OFF CACHE BOOL "")
set(CLANG_TIDY_ENABLE_STATIC_ANALYZER OFF CACHE BOOL "")
set(CLANG_VENDOR Android CACHE STRING "")
diff --git a/clang/cmake/caches/Fuchsia-stage2.cmake b/clang/cmake/caches/Fuchsia-stage2.cmake
index 784a883a3bf916..3db19c36acc581 100644
--- a/clang/cmake/caches/Fuchsia-stage2.cmake
+++ b/clang/cmake/caches/Fuchsia-stage2.cmake
@@ -44,7 +44,6 @@ set(CLANG_DEFAULT_LINKER lld CACHE STRING "")
set(CLANG_DEFAULT_OBJCOPY llvm-objcopy CACHE STRING "")
set(CLANG_DEFAULT_RTLIB compiler-rt CACHE STRING "")
set(CLANG_DEFAULT_UNWINDLIB libunwind CACHE STRING "")
-set(CLANG_ENABLE_ARCMT OFF CACHE BOOL "")
set(CLANG_ENABLE_STATIC_ANALYZER ON CACHE BOOL "")
set(CLANG_PLUGIN_SUPPORT OFF CACHE BOOL "")
diff --git a/clang/cmake/caches/Fuchsia.cmake b/clang/cmake/caches/Fuchsia.cmake
index 07637cd0ed08f0..83336589da305d 100644
--- a/clang/cmake/caches/Fuchsia.cmake
+++ b/clang/cmake/caches/Fuchsia.cmake
@@ -84,7 +84,6 @@ set(CLANG_DEFAULT_LINKER lld CACHE STRING "")
set(CLANG_DEFAULT_OBJCOPY llvm-objcopy CACHE STRING "")
set(CLANG_DEFAULT_RTLIB compiler-rt CACHE STRING "")
set(CLANG_DEFAULT_UNWINDLIB libunwind CACHE STRING "")
-set(CLANG_ENABLE_ARCMT OFF CACHE BOOL "")
set(CLANG_ENABLE_STATIC_ANALYZER OFF CACHE BOOL "")
set(CLANG_PLUGIN_SUPPORT OFF CACHE BOOL "")
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 3f58e64cf0ccbc..c168606af609ed 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -58,6 +58,8 @@ code bases.
containing strict-aliasing violations. The new default behavior can be
disabled using ``-fno-pointer-tbaa``.
+- The Objective-C ARC migrator (ARCMigrate) has been removed.
+
C/C++ Language Potentially Breaking Changes
-------------------------------------------
diff --git a/clang/include/clang-c/Index.h b/clang/include/clang-c/Index.h
index 8fc06328f0bcef..ee9e159b6dad76 100644
--- a/clang/include/clang-c/Index.h
+++ b/clang/include/clang-c/Index.h
@@ -5850,66 +5850,6 @@ CINDEX_LINKAGE const char *clang_EvalResult_getAsStr(CXEvalResult E);
* Disposes the created Eval memory.
*/
CINDEX_LINKAGE void clang_EvalResult_dispose(CXEvalResult E);
-/**
- * @}
- */
-
-/** \defgroup CINDEX_REMAPPING Remapping functions
- *
- * @{
- */
-
-/**
- * A remapping of original source files and their translated files.
- */
-typedef void *CXRemapping;
-
-/**
- * Retrieve a remapping.
- *
- * \param path the path that contains metadata about remappings.
- *
- * \returns the requested remapping. This remapping must be freed
- * via a call to \c clang_remap_dispose(). Can return NULL if an error occurred.
- */
-CINDEX_LINKAGE CXRemapping clang_getRemappings(const char *path);
-
-/**
- * Retrieve a remapping.
- *
- * \param filePaths pointer to an array of file paths containing remapping info.
- *
- * \param numFiles number of file paths.
- *
- * \returns the requested remapping. This remapping must be freed
- * via a call to \c clang_remap_dispose(). Can return NULL if an error occurred.
- */
-CINDEX_LINKAGE
-CXRemapping clang_getRemappingsFromFileList(const char **filePaths,
- unsigned numFiles);
-
-/**
- * Determine the number of remappings.
- */
-CINDEX_LINKAGE unsigned clang_remap_getNumFiles(CXRemapping);
-
-/**
- * Get the original and the associated filename from the remapping.
- *
- * \param original If non-NULL, will be set to the original filename.
- *
- * \param transformed If non-NULL, will be set to the filename that the original
- * is associated with.
- */
-CINDEX_LINKAGE void clang_remap_getFilenames(CXRemapping, unsigned index,
- CXString *original,
- CXString *transformed);
-
-/**
- * Dispose the remapping.
- */
-CINDEX_LINKAGE void clang_remap_dispose(CXRemapping);
-
/**
* @}
*/
diff --git a/clang/include/clang/ARCMigrate/ARCMT.h b/clang/include/clang/ARCMigrate/ARCMT.h
deleted file mode 100644
index 2b950e3d2cc2bf..00000000000000
--- a/clang/include/clang/ARCMigrate/ARCMT.h
+++ /dev/null
@@ -1,130 +0,0 @@
-//===-- ARCMT.h - ARC Migration Rewriter ------------------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ARCMIGRATE_ARCMT_H
-#define LLVM_CLANG_ARCMIGRATE_ARCMT_H
-
-#include "clang/ARCMigrate/FileRemapper.h"
-#include "clang/Basic/SourceLocation.h"
-#include "clang/Frontend/CompilerInvocation.h"
-
-namespace clang {
- class ASTContext;
- class DiagnosticConsumer;
- class PCHContainerOperations;
-
-namespace arcmt {
- class MigrationPass;
-
-/// Creates an AST with the provided CompilerInvocation but with these
-/// changes:
-/// -if a PCH/PTH is set, the original header is used instead
-/// -Automatic Reference Counting mode is enabled
-///
-/// It then checks the AST and produces errors/warning for ARC migration issues
-/// that the user needs to handle manually.
-///
-/// \param emitPremigrationARCErrors if true all ARC errors will get emitted
-/// even if the migrator can fix them, but the function will still return false
-/// if all ARC errors can be fixed.
-///
-/// \param plistOut if non-empty, it is the file path to store the plist with
-/// the pre-migration ARC diagnostics.
-///
-/// \returns false if no error is produced, true otherwise.
-bool
-checkForManualIssues(CompilerInvocation &CI, const FrontendInputFile &Input,
- std::shared_ptr<PCHContainerOperations> PCHContainerOps,
- DiagnosticConsumer *DiagClient,
- bool emitPremigrationARCErrors = false,
- StringRef plistOut = StringRef());
-
-/// Works similar to checkForManualIssues but instead of checking, it
-/// applies automatic modifications to source files to conform to ARC.
-///
-/// \returns false if no error is produced, true otherwise.
-bool
-applyTransformations(CompilerInvocation &origCI,
- const FrontendInputFile &Input,
- std::shared_ptr<PCHContainerOperations> PCHContainerOps,
- DiagnosticConsumer *DiagClient);
-
-/// Applies automatic modifications and produces temporary files
-/// and metadata into the \p outputDir path.
-///
-/// \param emitPremigrationARCErrors if true all ARC errors will get emitted
-/// even if the migrator can fix them, but the function will still return false
-/// if all ARC errors can be fixed.
-///
-/// \param plistOut if non-empty, it is the file path to store the plist with
-/// the pre-migration ARC diagnostics.
-///
-/// \returns false if no error is produced, true otherwise.
-bool migrateWithTemporaryFiles(
- CompilerInvocation &origCI, const FrontendInputFile &Input,
- std::shared_ptr<PCHContainerOperations> PCHContainerOps,
- DiagnosticConsumer *DiagClient, StringRef outputDir,
- bool emitPremigrationARCErrors, StringRef plistOut);
-
-/// Get the set of file remappings from the \p outputDir path that
-/// migrateWithTemporaryFiles produced.
-///
-/// \returns false if no error is produced, true otherwise.
-bool getFileRemappings(std::vector<std::pair<std::string,std::string> > &remap,
- StringRef outputDir,
- DiagnosticConsumer *DiagClient);
-
-/// Get the set of file remappings from a list of files with remapping
-/// info.
-///
-/// \returns false if no error is produced, true otherwise.
-bool getFileRemappingsFromFileList(
- std::vector<std::pair<std::string,std::string> > &remap,
- ArrayRef<StringRef> remapFiles,
- DiagnosticConsumer *DiagClient);
-
-typedef void (*TransformFn)(MigrationPass &pass);
-
-std::vector<TransformFn> getAllTransformations(LangOptions::GCMode OrigGCMode,
- bool NoFinalizeRemoval);
-
-class MigrationProcess {
- CompilerInvocation OrigCI;
- std::shared_ptr<PCHContainerOperations> PCHContainerOps;
- DiagnosticConsumer *DiagClient;
- FileRemapper Remapper;
-
-public:
- bool HadARCErrors;
-
- MigrationProcess(CompilerInvocation &CI,
- std::shared_ptr<PCHContainerOperations> PCHContainerOps,
- DiagnosticConsumer *diagClient,
- StringRef outputDir = StringRef());
-
- class RewriteListener {
- public:
- virtual ~RewriteListener();
-
- virtual void start(ASTContext &Ctx) { }
- virtual void finish() { }
-
- virtual void insert(SourceLocation loc, StringRef text) { }
- virtual void remove(CharSourceRange range) { }
- };
-
- bool applyTransform(TransformFn trans, RewriteListener *listener = nullptr);
-
- FileRemapper &getRemapper() { return Remapper; }
-};
-
-} // end namespace arcmt
-
-} // end namespace clang
-
-#endif
diff --git a/clang/include/clang/ARCMigrate/ARCMTActions.h b/clang/include/clang/ARCMigrate/ARCMTActions.h
deleted file mode 100644
index 714f4b33db446b..00000000000000
--- a/clang/include/clang/ARCMigrate/ARCMTActions.h
+++ /dev/null
@@ -1,76 +0,0 @@
-//===--- ARCMTActions.h - ARC Migrate Tool Frontend Actions -----*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ARCMIGRATE_ARCMTACTIONS_H
-#define LLVM_CLANG_ARCMIGRATE_ARCMTACTIONS_H
-
-#include "clang/ARCMigrate/FileRemapper.h"
-#include "clang/Frontend/FrontendAction.h"
-#include <memory>
-
-namespace clang {
-namespace arcmt {
-
-class CheckAction : public WrapperFrontendAction {
-protected:
- bool BeginInvocation(CompilerInstance &CI) override;
-
-public:
- CheckAction(std::unique_ptr<FrontendAction> WrappedAction);
-};
-
-class ModifyAction : public WrapperFrontendAction {
-protected:
- bool BeginInvocation(CompilerInstance &CI) override;
-
-public:
- ModifyAction(std::unique_ptr<FrontendAction> WrappedAction);
-};
-
-class MigrateSourceAction : public ASTFrontendAction {
- FileRemapper Remapper;
-protected:
- bool BeginInvocation(CompilerInstance &CI) override;
- std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) override;
-};
-
-class MigrateAction : public WrapperFrontendAction {
- std::string MigrateDir;
- std::string PlistOut;
- bool EmitPremigrationARCErrors;
-protected:
- bool BeginInvocation(CompilerInstance &CI) override;
-
-public:
- MigrateAction(std::unique_ptr<FrontendAction> WrappedAction,
- StringRef migrateDir,
- StringRef plistOut,
- bool emitPremigrationARCErrors);
-};
-
-/// Migrates to modern ObjC syntax.
-class ObjCMigrateAction : public WrapperFrontendAction {
- std::string MigrateDir;
- unsigned ObjCMigAction;
- FileRemapper Remapper;
- CompilerInstance *CompInst;
-public:
- ObjCMigrateAction(std::unique_ptr<FrontendAction> WrappedAction,
- StringRef migrateDir, unsigned migrateAction);
-
-protected:
- std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) override;
- bool BeginInvocation(CompilerInstance &CI) override;
-};
-
-}
-}
-
-#endif
diff --git a/clang/include/clang/ARCMigrate/FileRemapper.h b/clang/include/clang/ARCMigrate/FileRemapper.h
deleted file mode 100644
index afcee363516a21..00000000000000
--- a/clang/include/clang/ARCMigrate/FileRemapper.h
+++ /dev/null
@@ -1,84 +0,0 @@
-//===-- FileRemapper.h - File Remapping Helper ------------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H
-#define LLVM_CLANG_ARCMIGRATE_FILEREMAPPER_H
-
-#include "clang/Basic/FileEntry.h"
-#include "clang/Basic/LLVM.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/StringRef.h"
-#include <memory>
-#include <variant>
-
-namespace llvm {
- class MemoryBuffer;
- class MemoryBufferRef;
-}
-
-namespace clang {
- class FileManager;
- class DiagnosticsEngine;
- class PreprocessorOptions;
-
-namespace arcmt {
-
-class FileRemapper {
- // FIXME: Reuse the same FileManager for multiple ASTContexts.
- std::unique_ptr<FileManager> FileMgr;
-
- using Target = std::variant<FileEntryRef, llvm::MemoryBuffer *>;
- using MappingsTy = llvm::DenseMap<FileEntryRef, Target>;
- MappingsTy FromToMappings;
-
- llvm::DenseMap<const FileEntry *, FileEntryRef> ToFromMappings;
-
-public:
- FileRemapper();
- ~FileRemapper();
-
- bool initFromDisk(StringRef outputDir, DiagnosticsEngine &Diag,
- bool ignoreIfFilesChanged);
- bool initFromFile(StringRef filePath, DiagnosticsEngine &Diag,
- bool ignoreIfFilesChanged);
- bool flushToDisk(StringRef outputDir, DiagnosticsEngine &Diag);
- bool flushToFile(StringRef outputPath, DiagnosticsEngine &Diag);
-
- bool overwriteOriginal(DiagnosticsEngine &Diag,
- StringRef outputDir = StringRef());
-
- void remap(StringRef filePath, std::unique_ptr<llvm::MemoryBuffer> memBuf);
-
- void applyMappings(PreprocessorOptions &PPOpts) const;
-
- /// Iterate through all the mappings.
- void forEachMapping(
- llvm::function_ref<void(StringRef, StringRef)> CaptureFile,
- llvm::function_ref<void(StringRef, const llvm::MemoryBufferRef &)>
- CaptureBuffer) const;
-
- void clear(StringRef outputDir = StringRef());
-
-private:
- void remap(FileEntryRef file, std::unique_ptr<llvm::MemoryBuffer> memBuf);
- void remap(FileEntryRef file, FileEntryRef newfile);
-
- OptionalFileEntryRef getOriginalFile(StringRef filePath);
- void resetTarget(Target &targ);
-
- bool report(const Twine &err, DiagnosticsEngine &Diag);
-
- std::string getRemapInfoFile(StringRef outputDir);
-};
-
-} // end namespace arcmt
-
-} // end namespace clang
-
-#endif
diff --git a/clang/include/clang/Basic/DiagnosticCommonKinds.td b/clang/include/clang/Basic/DiagnosticCommonKinds.td
index f4a155bb00bb37..f26c906b46447a 100644
--- a/clang/include/clang/Basic/DiagnosticCommonKinds.td
+++ b/clang/include/clang/Basic/DiagnosticCommonKinds.td
@@ -402,16 +402,6 @@ def note_file_misc_sloc_usage : Note<
def err_module_format_unhandled : Error<
"no handler registered for module format '%0'">, DefaultFatal;
-// TransformActions
-// TODO: Use a custom category name to distinguish rewriter errors.
-def err_mt_message : Error<"[rewriter] %0">, SuppressInSystemHeader;
-def warn_mt_message : Warning<"[rewriter] %0">;
-def note_mt_message : Note<"[rewriter] %0">;
-
-// ARCMigrate
-def warn_arcmt_nsalloc_realloc : Warning<"[rewriter] call returns pointer to GC managed memory; it will become unmanaged in ARC">;
-def err_arcmt_nsinvocation_ownership : Error<"NSInvocation's %0 is not safe to be used with an object with ownership other than __unsafe_unretained">;
-
// API notes
def err_apinotes_message : Error<"%0">;
def warn_apinotes_message : Warning<"%0">, InGroup<DiagGroup<"apinotes">>;
diff --git a/clang/include/clang/Config/config.h.cmake b/clang/include/clang/Config/config.h.cmake
index 27ed69e21562bf..805721237609b1 100644
--- a/clang/include/clang/Config/config.h.cmake
+++ b/clang/include/clang/Config/config.h.cmake
@@ -76,8 +76,6 @@
#cmakedefine01 PPC_LINUX_DEFAULT_IEEELONGDOUBLE
/* Enable each functionality of modules */
-#cmakedefine01 CLANG_ENABLE_ARCMT
-#cmakedefine01 CLANG_ENABLE_OBJC_REWRITER
#cmakedefine01 CLANG_ENABLE_STATIC_ANALYZER
/* Spawn a new process clang.exe for the CC1 tool invocation, when necessary */
diff --git a/clang/include/clang/Driver/Action.h b/clang/include/clang/Driver/Action.h
index 04fa8b01b418f8..bb9444d2e9ccdc 100644
--- a/clang/include/clang/Driver/Action.h
+++ b/clang/include/clang/Driver/Action.h
@@ -60,7 +60,6 @@ class Action {
PrecompileJobClass,
ExtractAPIJobClass,
AnalyzeJobClass,
- MigrateJobClass,
CompileJobClass,
BackendJobClass,
AssembleJobClass,
@@ -459,17 +458,6 @@ class AnalyzeJobAction : public JobAction {
}
};
-class MigrateJobAction : public JobAction {
- void anchor() override;
-
-public:
- MigrateJobAction(Action *Input, types::ID OutputType);
-
- static bool classof(const Action *A) {
- return A->getKind() == MigrateJobClass;
- }
-};
-
class CompileJobAction : public JobAction {
void anchor() override;
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index a89a4e8f8ec985..642d2a1268a002 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -692,20 +692,6 @@ def ccc_print_phases : Flag<["-"], "ccc-print-phases">,
def ccc_print_bindings : Flag<["-"], "ccc-print-bindings">, InternalDebugOpt,
HelpText<"Show bindings of tools to actions">;
-def ccc_arcmt_check : Flag<["-"], "ccc-arcmt-check">, InternalDriverOpt,
- HelpText<"Check for ARC migration issues that need manual handling">;
-def ccc_arcmt_modify : Flag<["-"], "ccc-arcmt-modify">, InternalDriverOpt,
- HelpText<"Apply modifications to files to conform to ARC">;
-def ccc_arcmt_migrate : Separate<["-"], "ccc-arcmt-migrate">, InternalDriverOpt,
- HelpText<"Apply modifications and produces temporary files that conform to ARC">;
-def arcmt_migrate_report_output : Separate<["-"], "arcmt-migrate-report-output">,
- HelpText<"Output path for the plist report">,
- Visibility<[ClangOption, CC1Option]>,
- MarshallingInfoString<FrontendOpts<"ARCMTMigrateReportOut">>;
-def arcmt_migrate_emit_arc_errors : Flag<["-"], "arcmt-migrate-emit-errors">,
- HelpText<"Emit ARC errors even if the migrator can fix them">,
- Visibility<[ClangOption, CC1Option]>,
- MarshallingInfoFlag<FrontendOpts<"ARCMTMigrateEmitARCErrors">>;
def gen_reproducer_eq: Joined<["-"], "gen-reproducer=">,
Flags<[NoArgumentUnused]>, Visibility<[ClangOption, CLOption, DXCOption]>,
HelpText<"Emit reproducer on (option: off, crash (default), error, always)">;
@@ -721,87 +707,6 @@ def no_round_trip_args : Flag<["-"], "no-round-trip-args">,
Visibility<[CC1Option]>,
HelpText<"Disable command line arguments round-trip.">;
-def _migrate : Flag<["--"], "migrate">, Flags<[NoXarchOption]>,
- HelpText<"Run the migrator">;
-def ccc_objcmt_migrate : Separate<["-"], "ccc-objcmt-migrate">,
- InternalDriverOpt,
- HelpText<"Apply modifications and produces temporary files to migrate to "
- "modern ObjC syntax">;
-
-def objcmt_migrate_literals : Flag<["-"], "objcmt-migrate-literals">,
- Visibility<[ClangOption, CC1Option]>,
- HelpText<"Enable migration to modern ObjC literals">,
...
[truncated]
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I see, we were talking about this earlier today and weren’t quite sure about that part. I presume we should keep that around for now then. Also, to clarify, does that include |
|
Yes, I believe that's essentially just a version of the rewriter that uses a different ABI (it tries to match the non-fragile Apple ObjC runtime rather than the fragile one). |
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Ok, I’ve gone through the changes again and I think I managed to exclude anything pertaining to the rewriter from the removal. |
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I’m not sure I got the CMake/Lit changes right though because I’m not really familiar w/ the CMake part of LLVM in general. |
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Thanks! I use |
|
ping |
AaronBallman
approved these changes
Jan 29, 2025
There was a problem hiding this comment.
LGTM but please wait for @rjmccall to sign off before landing.
akyrtzi
approved these changes
Jan 29, 2025
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/50/builds/9611 Here is the relevant piece of the build log for the reference |
nico
reviewed
Jan 30, 2025
| @@ -22,7 +22,7 @@ config.host_cxx = "@CMAKE_CXX_COMPILER@" | |||
| config.llvm_use_sanitizer = "@LLVM_USE_SANITIZER@" | |||
| config.have_zlib = @LLVM_ENABLE_ZLIB@ | |||
| config.have_zstd = @LLVM_ENABLE_ZSTD@ | |||
| config.clang_arcmt = @CLANG_ENABLE_ARCMT@ | |||
| config.clang_objc_rewriter = "@CLANG_ENABLE_OBJC_REWRITER@" == "ON" | |||
There was a problem hiding this comment.
Instead of this, please add CLANG_ENABLE_OBJC_REWRITER to the llvm_canonicalize_cmake_booleans list at the top of clang/test/CMakeLists.txt and do clang_objc_rewriter = @CLANG_ENABLE_OBJC_REWRITER@ here.
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I was wondering what the right way of doing this was; I’ll make a new pr for that
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Thank you for this; this was a fantastic cleanup of tech debt! |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/136/builds/2593 Here is the relevant piece of the build log for the reference |
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In the discussion around #116792, @rjmccall mentioned that ARCMigrate has been obsoleted and that we could go ahead and remove it from Clang, so this patch does just that.
I searched for every mention of ‘ARCMT’/‘ARCMigrate’/‘ObjCRewrite’ and removed everything that seemed related to what I was able to find. I also had to touch a bunch of bazel and gn build scripts as part of this, neither of which I’m familiar with so it’s possible that I missed something there.