Revert all experimental cross module opt related code (#3340)

* Revert all experimental cross module opt related code

* Remove `cross_module_opt_main.cpp` from `CMakeLists.txt`

* Remove swiftStandaloneRuntime target and related lines

* Remove swift-module-summary-test from lit.cfg and restore the accidentally deleted line

* Remove LTO test runner from ci script

* Revert "[WASM] Use swift-autolink-extract for wasm target LLVM LTO"

This reverts commit 69174f1.

* Remove remained parts of LTO changes

Co-authored-by: Max Desiatov <[email protected]>

Author: kateinoigakukun

include/swift/AST/IRGenOptions.h

@@ -274,9 +274,6 @@ class IRGenOptions {
   /// Frameworks that we should not autolink against.
   SmallVector<std::string, 1> DisableAutolinkFrameworks;
 
-  /// Disable autolinking swiftCore for stdlib thin CMO
-  unsigned DisableAutolinkStdlib : 1;
-
   /// Print the LLVM inline tree at the end of the LLVM pass pipeline.
   unsigned PrintInlineTree : 1;
 
@@ -392,7 +389,6 @@ class IRGenOptions {
         DisableLLVMOptzns(false), DisableSwiftSpecificLLVMOptzns(false),
         DisableLLVMSLPVectorizer(false), Playground(false),
         EmitStackPromotionChecks(false), FunctionSections(false),
-        DisableAutolinkStdlib(false),
         PrintInlineTree(false), EmbedMode(IRGenEmbedMode::None),
         LLVMLTOKind(IRGenLLVMLTOKind::None), HasValueNamesSetting(false),
         ValueNames(false), EnableReflectionMetadata(true),

include/swift/AST/SILOptions.h

@@ -185,12 +185,6 @@ class SILOptions {
   /// }
   bool EnableDynamicReplacementCanCallPreviousImplementation = true;
 
-  /// Enable large loadable types IRGen pass.
-  bool EnableLargeLoadableTypes = true;
-
-  /// The path to combined module summary file
-  std::string ModuleSummaryPath;
-
   /// The name of the file to which the backend should save optimization
   /// records.
   std::string OptRecordFile;

include/swift/Frontend/FrontendOptions.h

@@ -74,9 +74,6 @@ class FrontendOptions {
   /// The path to which we should store indexing data, if any.
   std::string IndexStorePath;
 
-  /// The path to which we should emit combined module summary file
-  std::string ModuleSummaryOutputPath;
-
   /// The path to load access notes from.
   std::string AccessNotesPath;
 

include/swift/Option/Options.h

@@ -40,7 +40,6 @@ namespace options {
     SwiftAPIExtractOption = (1 << 15),
     SwiftSymbolGraphExtractOption = (1 << 16),
     SwiftAPIDigesterOption = (1 << 17),
-    SwiftMergeModuleSummaryOption = (1 << 18),
   };
 
   enum ID {

include/swift/Option/Options.td

@@ -64,8 +64,6 @@ def SwiftSymbolGraphExtractOption : OptionFlag;
 // The option should be accepted by swift-api-digester.
 def SwiftAPIDigesterOption : OptionFlag;
 
-def SwiftMergeModuleSummaryOption : OptionFlag;
-
 /////////
 // Options
 
@@ -182,7 +180,6 @@ def driver_mode : Joined<["--"], "driver-mode=">, Flags<[HelpHidden]>,
 def help : Flag<["-", "--"], "help">,
   Flags<[FrontendOption, AutolinkExtractOption, ModuleWrapOption,
          SwiftIndentOption, SwiftAPIExtractOption,
-         SwiftMergeModuleSummaryOption,
          SwiftSymbolGraphExtractOption, SwiftAPIDigesterOption]>,
   HelpText<"Display available options">;
 def h : Flag<["-"], "h">, Alias<help>;
@@ -207,7 +204,6 @@ def _DASH_DASH : Option<["--"], "", KIND_REMAINING_ARGS>,
 def o : JoinedOrSeparate<["-"], "o">,
   Flags<[FrontendOption, AutolinkExtractOption, ModuleWrapOption,
          NoInteractiveOption, SwiftIndentOption, ArgumentIsPath,
-         SwiftMergeModuleSummaryOption,
          SwiftAPIExtractOption, SwiftAPIDigesterOption]>,
   HelpText<"Write output to <file>">, MetaVarName<"<file>">;
 
@@ -455,9 +451,6 @@ def emit_module_summary_path :
   Flags<[FrontendOption, NoInteractiveOption, ArgumentIsPath,
          SupplementaryOutput]>,
   MetaVarName<"<path>">, HelpText<"Output module summary file to <path>">;
-def module_summary_path : Separate<["-"], "module-summary-path">,
-    Flags<[FrontendOption, ArgumentIsPath]>, MetaVarName<"<path>">,
-    HelpText<"Combined module summary file <path>">;
 
 def emit_module_interface :
   Flag<["-"], "emit-module-interface">,
@@ -725,10 +718,6 @@ def no_stdlib_rpath: Flag<["-"], "no-stdlib-rpath">,
   Flags<[HelpHidden,DoesNotAffectIncrementalBuild]>,
   HelpText<"Don't add any rpath entries.">;
 
-def no_stdlib_link: Flag<["-"], "no-stdlib-link">,
-  Flags<[FrontendOption, DoesNotAffectIncrementalBuild]>,
-  HelpText<"Don't link stdlib.">;
-
 def static_executable : Flag<["-"], "static-executable">,
   HelpText<"Statically link the executable">;
 def no_static_executable : Flag<["-"], "no-static-executable">,
@@ -1059,7 +1048,7 @@ def Xclang_linker : Separate<["-"], "Xclang-linker">, Flags<[HelpHidden]>,
   MetaVarName<"<arg>">, HelpText<"Pass <arg> to Clang when it is use for linking.">;
 
 def Xllvm : Separate<["-"], "Xllvm">,
-  Flags<[FrontendOption, HelpHidden, SwiftMergeModuleSummaryOption]>,
+  Flags<[FrontendOption, HelpHidden]>,
   MetaVarName<"<arg>">, HelpText<"Pass <arg> to LLVM.">;
 
 def resource_dir : Separate<["-"], "resource-dir">,

include/swift/SIL/ModuleSummary.h

@@ -3297,10 +3297,7 @@ class KeyPathPatternComponent {
   void visitReferencedFunctionsAndMethods(
       std::function<void (SILFunction *)> functionCallBack,
       std::function<void (SILDeclRef)> methodCallBack) const;
-
-  void clearReferencedFunctions_if(
-      llvm::function_ref<bool(SILFunction *)> predicate);
-
+    
   void incrementRefCounts() const;
   void decrementRefCounts() const;
 

include/swift/SIL/SILInstruction.h

@@ -67,14 +67,7 @@ class SILProperty : public llvm::ilist_node<SILProperty>,
   const Optional<KeyPathPatternComponent> &getComponent() const {
     return Component;
   }
-
-  void clearReferencedFunctions_if(
-      llvm::function_ref<bool(SILFunction *)> predicate) {
-    if (Component) {
-      Component->clearReferencedFunctions_if(predicate);
-    }
-  }
-
+  
   void print(SILPrintContext &Ctx) const;
   void dump() const;
 

include/swift/SIL/SILProperty.h

@@ -25,7 +25,6 @@
 PASSPIPELINE(Diagnostic, "Guaranteed Passes")
 PASSPIPELINE(LowerHopToActor, "Lower Hop to Actor")
 PASSPIPELINE(OwnershipEliminator, "Utility pass to just run the ownership eliminator pass")
-PASSPIPELINE(CrossModuleEliminator, "Passes run at -module-summary-path")
 PASSPIPELINE(Performance, "Passes run at -O")
 PASSPIPELINE(Onone, "Passes run at -Onone")
 PASSPIPELINE(InstCount, "Utility pipeline to just run the inst count pass")