Remove the unused llvm-rs-link binary.

This hasn't been used or maintained for quite some time, and it serves no
purpose for Renderscript today.

Change-Id: I5a4148159c96256a9231ff4e5ce8ba86ab4c114a

2 files changed, 0 insertions, 332 deletions

diff --git a/Android.mk b/Android.mk
index caf8852..293db96 100644
--- a/Android.mk
+++ b/Android.mk
@@ -159,31 +159,6 @@ LOCAL_SRC_FILES := slang-data.c
 
 include $(BUILD_HOST_EXECUTABLE)
 
-# Executable llvm-rs-link for host
-# ========================================================
-include $(CLEAR_VARS)
-include $(CLEAR_TBLGEN_VARS)
-
-include $(LLVM_ROOT_PATH)/llvm.mk
-
-LOCAL_MODULE := llvm-rs-link
-LOCAL_MODULE_TAGS := optional
-
-LOCAL_MODULE_CLASS := EXECUTABLES
-
-LOCAL_SRC_FILES :=	\
-	llvm-rs-link.cpp
-
-LOCAL_STATIC_LIBRARIES :=	\
-	librslib libslang \
-	$(static_libraries_needed_by_slang)
-
-LOCAL_LDLIBS := -ldl -lpthread
-
-include $(LLVM_HOST_BUILD_MK)
-include $(LLVM_GEN_INTRINSICS_MK)
-include $(BUILD_HOST_EXECUTABLE)
-
 # Executable rs-spec-gen for host
 # ========================================================
 include $(CLEAR_VARS)
diff --git a/llvm-rs-link.cpp b/llvm-rs-link.cpp
deleted file mode 100644
index cf77481..0000000
--- a/llvm-rs-link.cpp
+++ /dev/null
@@ -1,307 +0,0 @@
-/*
- * Copyright 2010, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <list>
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "llvm/Analysis/Verifier.h"
-
-#include "llvm/Bitcode/ReaderWriter.h"
-
-#include "llvm/Linker.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Metadata.h"
-#include "llvm/IR/Module.h"
-
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Support/system_error.h"
-
-#include "llvm/PassManager.h"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Transforms/IPO/PassManagerBuilder.h"
-
-#include "llvm/IR/DataLayout.h"
-
-#include "slang_rs_metadata.h"
-
-using llvm::errs;
-using llvm::LLVMContext;
-using llvm::MemoryBuffer;
-using llvm::Module;
-
-static llvm::cl::list<std::string>
-InputFilenames(llvm::cl::Positional, llvm::cl::OneOrMore,
-               llvm::cl::desc("<input bitcode files>"));
-
-static llvm::cl::list<std::string>
-OutputFilenames("o", llvm::cl::desc("Override output filename"),
-                llvm::cl::value_desc("<output bitcode file>"));
-
-static llvm::cl::opt<bool>
-NoStdLib("nostdlib", llvm::cl::desc("Don't link RS default libraries"));
-
-static llvm::cl::list<std::string>
-    AdditionalLibs("l", llvm::cl::Prefix,
-                   llvm::cl::desc("Specify additional libraries to link to"),
-                   llvm::cl::value_desc("<library bitcode>"));
-
-static bool GetExportSymbolNames(llvm::NamedMDNode *N,
-                                 unsigned NameOpIdx,
-                                 std::vector<const char *> &Names) {
-  if (N == NULL)
-    return true;
-
-  for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
-    llvm::MDNode *V = N->getOperand(i);
-    if (V == NULL)
-      continue;
-
-    if (V->getNumOperands() < (NameOpIdx + 1)) {
-      errs() << "Invalid metadata spec of " << N->getName()
-             << " in Renderscript executable. (#op)\n";
-      return false;
-    }
-
-    llvm::MDString *Name =
-        llvm::dyn_cast<llvm::MDString>(V->getOperand(NameOpIdx));
-    if (Name == NULL) {
-      errs() << "Invalid metadata spec of " << N->getName()
-             << " in Renderscript executable. (#name)\n";
-      return false;
-    }
-
-    Names.push_back(Name->getString().data());
-  }
-  return true;
-}
-
-static bool GetExportSymbols(Module *M, std::vector<const char *> &Names) {
-  bool Result = true;
-  // Variables marked as export must be externally visible
-  if (llvm::NamedMDNode *EV = M->getNamedMetadata(RS_EXPORT_VAR_MN))
-    Result |= GetExportSymbolNames(EV, RS_EXPORT_VAR_NAME, Names);
-  // So are those exported functions
-  if (llvm::NamedMDNode *EF = M->getNamedMetadata(RS_EXPORT_FUNC_MN))
-    Result |= GetExportSymbolNames(EF, RS_EXPORT_FUNC_NAME, Names);
-  return Result;
-}
-
-static inline MemoryBuffer *LoadFileIntoMemory(const std::string &F) {
-  llvm::OwningPtr<MemoryBuffer> MB;
-
-  if (llvm::error_code EC = MemoryBuffer::getFile(F, MB)) {
-    errs() << "Failed to load `" << F << "' (" + EC.message() + ")\n";
-  }
-
-  return MB.take();
-}
-
-static inline Module *ParseBitcodeFromMemoryBuffer(MemoryBuffer *MB,
-                                                   LLVMContext& Context) {
-  std::string Err;
-  Module *M = ParseBitcodeFile(MB, Context, &Err);
-
-  if (M == NULL)
-    errs() << "Corrupted bitcode file `" << MB->getBufferIdentifier()
-           <<  "' (" << Err << ")\n";
-
-  return M;
-}
-
-// LoadBitcodeFile - Read the specified bitcode file in and return it.
-static inline Module *LoadBitcodeFile(const std::string &F,
-                                      LLVMContext& Context) {
-  MemoryBuffer *MB = LoadFileIntoMemory(F);
-  if (MB == NULL)
-    return NULL;
-
-  Module *M = ParseBitcodeFromMemoryBuffer(MB, Context);
-  if (M == NULL)
-    delete MB;
-
-  return M;
-}
-
-extern const char rslib_bc[];
-extern unsigned rslib_bc_size;
-
-static bool PreloadLibraries(bool NoStdLib,
-                             const std::vector<std::string> &AdditionalLibs,
-                             std::list<MemoryBuffer *> &LibBitcode) {
-  MemoryBuffer *MB;
-
-  LibBitcode.clear();
-
-  if (!NoStdLib) {
-    // rslib.bc
-    MB = MemoryBuffer::getMemBuffer(llvm::StringRef(rslib_bc, rslib_bc_size),
-                                    "rslib.bc");
-    if (MB == NULL) {
-      errs() << "Failed to load (in-memory) `rslib.bc'!\n";
-      return false;
-    }
-
-    LibBitcode.push_back(MB);
-  }
-
-  // Load additional libraries
-  for (std::vector<std::string>::const_iterator
-          I = AdditionalLibs.begin(), E = AdditionalLibs.end();
-       I != E;
-       I++) {
-    MB = LoadFileIntoMemory(*I);
-    if (MB == NULL)
-      return false;
-    LibBitcode.push_back(MB);
-  }
-
-  return true;
-}
-
-static void UnloadLibraries(std::list<MemoryBuffer *>& LibBitcode) {
-  for (std::list<MemoryBuffer *>::iterator
-          I = LibBitcode.begin(), E = LibBitcode.end();
-       I != E;
-       I++)
-    delete *I;
-  LibBitcode.clear();
-  return;
-}
-
-Module *PerformLinking(const std::string &InputFile,
-                       const std::list<MemoryBuffer *> &LibBitcode,
-                       LLVMContext &Context) {
-  std::string Err;
-  std::auto_ptr<Module> Composite(LoadBitcodeFile(InputFile, Context));
-
-  if (Composite.get() == NULL)
-    return NULL;
-
-  for (std::list<MemoryBuffer *>::const_iterator I = LibBitcode.begin(),
-          E = LibBitcode.end();
-       I != E;
-       I++) {
-    Module *Lib = ParseBitcodeFromMemoryBuffer(*I, Context);
-    if (Lib == NULL)
-      return NULL;
-
-    if (llvm::Linker::LinkModules(Composite.get(), Lib,
-                                  llvm::Linker::DestroySource, &Err)) {
-      errs() << "Failed to link `" << InputFile << "' with library bitcode `"
-             << (*I)->getBufferIdentifier() << "' (" << Err << ")\n";
-      return NULL;
-    }
-  }
-
-  return Composite.release();
-}
-
-bool OptimizeModule(Module *M) {
-  llvm::PassManager Passes;
-
-  const std::string &ModuleDataLayout = M->getDataLayout();
-  if (!ModuleDataLayout.empty())
-    if (llvm::DataLayout *DL = new llvm::DataLayout(ModuleDataLayout))
-      Passes.add(DL);
-
-  // Some symbols must not be internalized
-  std::vector<const char *> ExportList;
-  ExportList.push_back("init");
-  ExportList.push_back("root");
-  ExportList.push_back(".rs.dtor");
-
-  if (!GetExportSymbols(M, ExportList)) {
-    return false;
-  }
-
-  Passes.add(llvm::createInternalizePass(ExportList));
-
-  // TODO(sliao): Do we need to run all LTO passes?
-  llvm::PassManagerBuilder PMBuilder;
-  PMBuilder.populateLTOPassManager(Passes,
-                                   /* Internalize = */false,
-                                   /* RunInliner = */true);
-  Passes.run(*M);
-
-  return true;
-}
-
-int main(int argc, char **argv) {
-  llvm::llvm_shutdown_obj X;  // Call llvm_shutdown() on exit.
-
-  llvm::cl::ParseCommandLineOptions(argc, argv, "llvm-rs-link\n");
-
-  std::list<MemoryBuffer *> LibBitcode;
-
-  if (!PreloadLibraries(NoStdLib, AdditionalLibs, LibBitcode))
-    return 1;
-
-  // No libraries specified to be linked
-  if (LibBitcode.size() == 0)
-    return 0;
-
-  LLVMContext &Context = llvm::getGlobalContext();
-  bool HasError = true;
-  std::string Err;
-
-  for (unsigned i = 0, e = InputFilenames.size(); i != e; i++) {
-    std::auto_ptr<Module> Linked(
-        PerformLinking(InputFilenames[i], LibBitcode, Context));
-
-    // Failed to link with InputFilenames[i] with LibBitcode
-    if (Linked.get() == NULL)
-      break;
-
-    // Verify linked module
-    if (verifyModule(*Linked, llvm::ReturnStatusAction, &Err)) {
-      errs() << InputFilenames[i] << " linked, but does not verify as "
-                                     "correct! (" << Err << ")\n";
-      break;
-    }
-
-    if (!OptimizeModule(Linked.get()))
-      break;
-
-    // Write out the module
-    llvm::tool_output_file Out(InputFilenames[i].c_str(), Err,
-                               llvm::raw_fd_ostream::F_Binary);
-
-    if (!Err.empty()) {
-      errs() << InputFilenames[i] << " linked, but failed to write out! "
-                                     "(" << Err << ")\n";
-      break;
-    }
-
-    WriteBitcodeToFile(Linked.get(), Out.os());
-
-    Out.keep();
-    Linked.reset();
-
-    if (i == (InputFilenames.size() - 1))
-      // This is the last file and no error occured.
-      HasError = false;
-  }
-
-  UnloadLibraries(LibBitcode);
-
-  return HasError;
-}