upload android base code part1

android/frameworks/compile/slang/llvm-rs-as.cpp

@@ -0,0 +1,157 @@
+//===--- llvm-as.cpp - The low-level LLVM assembler -----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This utility may be invoked in the following manner:
+//   llvm-as --help         - Output information about command line switches
+//   llvm-as [options]      - Read LLVM asm from stdin, write bitcode to stdout
+//   llvm-as [options] x.ll - Read LLVM asm from the x.ll file, write bitcode
+//                            to the x.bc file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/AsmParser/Parser.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/SystemUtils.h"
+#include "llvm/Support/ToolOutputFile.h"
+
+#include "slang_bitcode_gen.h"
+#include "slang_version.h"
+
+#include "StripUnkAttr/strip_unknown_attributes.h"
+
+#include <memory>
+using namespace llvm;
+
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input .llvm file>"), cl::init("-"));
+
+static cl::opt<std::string>
+OutputFilename("o", cl::desc("Override output filename"),
+               cl::value_desc("filename"));
+
+static cl::opt<bool>
+Force("f", cl::desc("Enable binary output on terminals"));
+
+static cl::opt<bool>
+DisableOutput("disable-output", cl::desc("Disable output"), cl::init(false));
+
+static cl::opt<uint32_t>
+TargetAPI("target-api", cl::desc("Specify RenderScript target API version "
+                                 "(0 = development API) (default is 0)"),
+          cl::init(0));
+
+static cl::opt<bool>
+DumpAsm("d", cl::desc("Print assembly as parsed"), cl::Hidden);
+
+static cl::opt<bool>
+DisableVerify("disable-verify", cl::Hidden,
+              cl::desc("Do not run verifier on input LLVM (dangerous!)"));
+
+static void stripUnknownAttributes(llvm::Module *M) {
+  for (llvm::Function &F : *M)
+    slang::stripUnknownAttributes(F);
+}
+
+static void WriteOutputFile(const Module *M, uint32_t ModuleTargetAPI) {
+  // Infer the output filename if needed.
+  if (OutputFilename.empty()) {
+    if (InputFilename == "-") {
+      OutputFilename = "-";
+    } else {
+      std::string IFN = InputFilename;
+      int Len = IFN.length();
+      if (IFN[Len-3] == '.' && IFN[Len-2] == 'l' && IFN[Len-1] == 'l') {
+        // Source ends in .ll
+        OutputFilename = std::string(IFN.begin(), IFN.end()-3);
+      } else {
+        OutputFilename = IFN;   // Append a .bc to it
+      }
+      OutputFilename += ".bc";
+    }
+  }
+
+  std::error_code EC;
+  std::unique_ptr<tool_output_file> Out
+  (new tool_output_file(OutputFilename.c_str(), EC, llvm::sys::fs::F_None));
+  if (EC) {
+    // TODO(srhines): This isn't actually very specific and needs cleanup.
+    errs() << EC.message() << '\n';
+    exit(1);
+  }
+
+  if (Force || !CheckBitcodeOutputToConsole(Out->os(), true)) {
+    slang::writeBitcode(Out->os(), *M,
+        /* TargetAPI = */ ModuleTargetAPI,
+        /* OptimizationLevel = */ 3,
+        /* GenerateDebugInfo = */ false);
+
+    if (!Out->os().has_error()) {
+      // Declare success.
+      Out->keep();
+    }
+  }
+}
+
+int main(int argc, char **argv) {
+  // Print a stack trace if we signal out.
+  sys::PrintStackTraceOnErrorSignal(argv[0]);
+  PrettyStackTraceProgram X(argc, argv);
+  LLVMContext Context;
+  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
+  cl::ParseCommandLineOptions(argc, argv, "llvm .ll -> .bc assembler\n");
+
+  // Check target API.
+  uint32_t ActualTargetAPI = (TargetAPI == 0) ? RS_DEVELOPMENT_API : TargetAPI;
+
+  if (ActualTargetAPI != RS_DEVELOPMENT_API &&
+      (ActualTargetAPI < SLANG_MINIMUM_TARGET_API ||
+       ActualTargetAPI > SLANG_MAXIMUM_TARGET_API)) {
+    errs() << "target API level '" << ActualTargetAPI << "' is out of range "
+           << "('" << SLANG_MINIMUM_TARGET_API << "' - '"
+           << SLANG_MAXIMUM_TARGET_API << "')\n";
+    return 1;
+  }
+
+  // Parse the file now...
+  SMDiagnostic Err;
+  std::unique_ptr<Module> M(parseAssemblyFile(InputFilename, Err, Context));
+  if (M.get() == 0) {
+    Err.print(argv[0], errs());
+    return 1;
+  }
+
+  if (!DisableVerify) {
+    std::string Err;
+    raw_string_ostream stream(Err);
+    if (verifyModule(*M.get(), &stream)) {
+      errs() << argv[0]
+             << ": assembly parsed, but does not verify as correct!\n";
+      errs() << Err;
+      return 1;
+    }
+  }
+
+  stripUnknownAttributes(M.get());
+
+  if (DumpAsm) errs() << "Here's the assembly:\n" << *M.get();
+
+  if (!DisableOutput)
+    WriteOutputFile(M.get(), ActualTargetAPI);
+
+  return 0;
+}