Remove the integrated REPL

Author: slavapestov

include/swift/AST/IRGenOptions.h

@@ -181,9 +181,6 @@ class IRGenOptions {
   /// Whether we're generating IR for the JIT.
   unsigned UseJIT : 1;
 
-  /// Whether we're generating code for the integrated REPL.
-  unsigned IntegratedREPL : 1;
-  
   /// Whether we should run LLVM optimizations after IRGen.
   unsigned DisableLLVMOptzns : 1;
 
@@ -320,7 +317,7 @@ class IRGenOptions {
         DebugInfoLevel(IRGenDebugInfoLevel::None),
         DebugInfoFormat(IRGenDebugInfoFormat::None),
         DisableClangModuleSkeletonCUs(false), UseJIT(false),
-        IntegratedREPL(false), DisableLLVMOptzns(false),
+        DisableLLVMOptzns(false),
         DisableSwiftSpecificLLVMOptzns(false), DisableLLVMSLPVectorizer(false),
         DisableFPElim(true), Playground(false), EmitStackPromotionChecks(false),
         FunctionSections(false), PrintInlineTree(false), EmbedMode(IRGenEmbedMode::None),

include/swift/Immediate/Immediate.h

@@ -41,9 +41,6 @@ namespace swift {
   int RunImmediately(CompilerInstance &CI, const ProcessCmdLine &CmdLine,
                      const IRGenOptions &IRGenOpts, const SILOptions &SILOpts,
                      std::unique_ptr<SILModule> &&SM);
-
-  void runREPL(CompilerInstance &CI, const ProcessCmdLine &CmdLine,
-               bool ParseStdlib);
 } // end namespace swift
 
 #endif // SWIFT_IMMEDIATE_IMMEDIATE_H

lib/FrontendTool/FrontendTool.cpp

@@ -1278,9 +1278,8 @@ static bool performCompile(CompilerInstance &Instance,
   (void)migrator::updateCodeAndEmitRemapIfNeeded(&Instance);
 
   if (Action == FrontendOptions::ActionType::REPL) {
-    runREPL(Instance, ProcessCmdLine(Args.begin(), Args.end()),
-            Invocation.getParseStdlib());
-    return Context.hadError();
+    llvm::report_fatal_error("Compiler-internal integrated REPL has been "
+                             "removed; use the LLDB-enhanced REPL instead.");
   }
 
   if (auto r = dumpASTIfNeeded(Instance))

lib/IRGen/GenDecl.cpp

@@ -3020,11 +3020,6 @@ IRGenModule::getAddrOfLLVMVariableOrGOTEquivalent(LinkEntity entity) {
       cast<llvm::GlobalValue>(entry), entity);
     return {gotEquivalent, ConstantReference::Indirect};
   };
-  
-  // The integrated REPL incrementally adds new definitions, so always use
-  // indirect references in this mode.
-  if (IRGen.Opts.IntegratedREPL)
-    return indirect();
 
   // Dynamically replaceable function keys are stored in the GlobalVars
   // table, but they don't have an associated Decl, so they require

lib/Immediate/CMakeLists.txt

@@ -1,6 +1,5 @@
 add_swift_host_library(swiftImmediate STATIC
   Immediate.cpp
-  REPL.cpp
   LLVM_LINK_COMPONENTS
     executionengine
     linker
@@ -14,9 +13,3 @@ target_link_libraries(swiftImmediate PRIVATE
   swiftIRGen
   swiftSILGen
   swiftSILOptimizer)
-if(LibEdit_FOUND AND LibEdit_HAS_UNICODE)
-  target_compile_definitions(swiftImmediate PRIVATE
-    HAVE_LIBEDIT)
-  target_link_libraries(swiftImmediate PRIVATE
-    libedit)
-endif()