Revert "[ORC] Introduce LazyReexportsManager, JITLinkTrampolines, … (#…

…118923)"

This reverts commit 570ecdc while I investigate
bot failures, e.g. https://lab.llvm.org/buildbot/#/builders/17/builds/4446.

compiler-rt/lib/orc/CMakeLists.txt

@@ -51,7 +51,6 @@ if (APPLE)
   set(ORC_ASM_SOURCES
     macho_tlv.x86-64.S
     macho_tlv.arm64.S
-    sysv_reentry.arm64.S
     )
 
   set(ORC_IMPL_HEADERS
@@ -62,7 +61,6 @@ if (APPLE)
   set(ORC_SOURCES
     ${ORC_COMMON_SOURCES}
     macho_platform.cpp
-    sysv_resolve.cpp
     )
 
   add_compiler_rt_object_libraries(RTOrc

compiler-rt/test/orc/TestCases/Generic/orc-rt-executor-usage.test

@@ -0,0 +1,6 @@
+// Test that the orc-remote-executor tool errors out as expected when called
+// with no arguments.
+//
+// RUN: not %orc_rt_executor 2>&1 | FileCheck %s
+
+// CHECK: usage: orc-rt-executor [help] [<mode>] <program arguments>...

compiler-rt/test/orc/lit.cfg.py

@@ -16,11 +16,6 @@
     host_arch_compatible = True
 if host_arch_compatible:
     config.available_features.add("host-arch-compatible")
-
-# If the target OS hasn't been set then assume host.
-if not config.target_os:
-    config.target_os = config.host_os
-
 config.test_target_is_host_executable = (
     config.target_os == config.host_os and host_arch_compatible
 )

llvm/include/llvm/ExecutionEngine/JITLink/aarch64.h

@@ -755,32 +755,6 @@ inline Symbol &createAnonymousPointerJumpStub(LinkGraph &G,
       sizeof(PointerJumpStubContent), true, false);
 }
 
-/// AArch64 reentry trampoline.
-///
-/// Contains the instruction sequence for a trampoline that stores its return
-/// address on the stack and passes its own address in x0:
-///   STP  x29, x30, [sp, #-16]!
-///   BL   <reentry-symbol>
-extern const char ReentryTrampolineContent[8];
-
-/// Create a block of N reentry trampolines.
-inline Block &createReentryTrampolineBlock(LinkGraph &G,
-                                           Section &TrampolineSection,
-                                           Symbol &ReentrySymbol) {
-  auto &B = G.createContentBlock(TrampolineSection, ReentryTrampolineContent,
-                                 orc::ExecutorAddr(~uint64_t(7)), 4, 0);
-  B.addEdge(Branch26PCRel, 4, ReentrySymbol, 0);
-  return B;
-}
-
-inline Symbol &createAnonymousReentryTrampoline(LinkGraph &G,
-                                                Section &TrampolineSection,
-                                                Symbol &ReentrySymbol) {
-  return G.addAnonymousSymbol(
-      createReentryTrampolineBlock(G, TrampolineSection, ReentrySymbol), 0,
-      sizeof(ReentryTrampolineContent), true, false);
-}
-
 /// Global Offset Table Builder.
 class GOTTableManager : public TableManager<GOTTableManager> {
 public:

llvm/include/llvm/ExecutionEngine/Orc/Core.h

@@ -51,26 +51,6 @@ enum class SymbolState : uint8_t;
 using ResourceTrackerSP = IntrusiveRefCntPtr<ResourceTracker>;
 using JITDylibSP = IntrusiveRefCntPtr<JITDylib>;
 
-/// A definition of a Symbol within a JITDylib.
-class SymbolInstance {
-public:
-  using LookupAsyncOnCompleteFn =
-      unique_function<void(Expected<ExecutorSymbolDef>)>;
-
-  SymbolInstance(JITDylibSP JD, SymbolStringPtr Name)
-      : JD(std::move(JD)), Name(std::move(Name)) {}
-
-  const JITDylib &getJITDylib() const { return *JD; }
-  const SymbolStringPtr &getName() const { return Name; }
-
-  Expected<ExecutorSymbolDef> lookup() const;
-  void lookupAsync(LookupAsyncOnCompleteFn OnComplete) const;
-
-private:
-  JITDylibSP JD;
-  SymbolStringPtr Name;
-};
-
 using ResourceKey = uintptr_t;
 
 /// API to remove / transfer ownership of JIT resources.
@@ -570,9 +550,6 @@ class MaterializationResponsibility {
   ///        emitted or notified of an error.
   ~MaterializationResponsibility();
 
-  /// Return the ResourceTracker associated with this instance.
-  const ResourceTrackerSP &getResourceTracker() const { return RT; }
-
   /// Runs the given callback under the session lock, passing in the associated
   /// ResourceKey. This is the safe way to associate resources with trackers.
   template <typename Func> Error withResourceKeyDo(Func &&F) const {
@@ -1771,10 +1748,6 @@ class ExecutionSession {
       JITDispatchHandlers;
 };
 
-inline Expected<ExecutorSymbolDef> SymbolInstance::lookup() const {
-  return JD->getExecutionSession().lookup({JD.get()}, Name);
-}
-
 template <typename Func> Error ResourceTracker::withResourceKeyDo(Func &&F) {
   return getJITDylib().getExecutionSession().runSessionLocked([&]() -> Error {
     if (isDefunct())

llvm/include/llvm/ExecutionEngine/Orc/JITLinkRedirectableSymbolManager.h

@@ -39,6 +39,12 @@ class JITLinkRedirectableSymbolManager : public RedirectableSymbolManager {
             ObjLinkingLayer, AnonymousPtrCreator, PtrJumpStubCreator));
   }
 
+  void emitRedirectableSymbols(std::unique_ptr<MaterializationResponsibility> R,
+                               SymbolMap InitialDests) override;
+
+  Error redirect(JITDylib &JD, const SymbolMap &NewDests) override;
+
+private:
   JITLinkRedirectableSymbolManager(
       ObjectLinkingLayer &ObjLinkingLayer,
       jitlink::AnonymousPointerCreator &AnonymousPtrCreator,
@@ -47,14 +53,6 @@ class JITLinkRedirectableSymbolManager : public RedirectableSymbolManager {
         AnonymousPtrCreator(std::move(AnonymousPtrCreator)),
         PtrJumpStubCreator(std::move(PtrJumpStubCreator)) {}
 
-  ObjectLinkingLayer &getObjectLinkingLayer() const { return ObjLinkingLayer; }
-
-  void emitRedirectableSymbols(std::unique_ptr<MaterializationResponsibility> R,
-                               SymbolMap InitialDests) override;
-
-  Error redirect(JITDylib &JD, const SymbolMap &NewDests) override;
-
-private:
   ObjectLinkingLayer &ObjLinkingLayer;
   jitlink::AnonymousPointerCreator AnonymousPtrCreator;
   jitlink::PointerJumpStubCreator PtrJumpStubCreator;