Vendor import of llvm trunk r126079:vendor/llvm/llvm-r126079

http://llvm.org/svn/llvm-project/llvm/trunk@126079

1 files changed, 28 insertions, 12 deletions

diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp
index 4c377805e6a3..a756459ecc23 100644
--- a/tools/lli/lli.cpp
+++ b/tools/lli/lli.cpp
@@ -23,16 +23,26 @@
 #include "llvm/ExecutionEngine/Interpreter.h"
 #include "llvm/ExecutionEngine/JIT.h"
 #include "llvm/ExecutionEngine/JITEventListener.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/IRReader.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PluginLoader.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Process.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Process.h"
+#include "llvm/Support/Signals.h"
 #include "llvm/Target/TargetSelect.h"
 #include <cerrno>
+
+#ifdef __CYGWIN__
+#include <cygwin/version.h>
+#if defined(CYGWIN_VERSION_DLL_MAJOR) && CYGWIN_VERSION_DLL_MAJOR<1007
+#define DO_NOTHING_ATEXIT 1
+#endif
+#endif
+
 using namespace llvm;
 
 namespace {
@@ -46,6 +56,10 @@ namespace {
                                  cl::desc("Force interpretation: disable JIT"),
                                  cl::init(false));
 
+  cl::opt<bool> UseMCJIT(
+    "use-mcjit", cl::desc("Enable use of the MC-based JIT (if available)"),
+    cl::init(false));
+
   // Determine optimization level.
   cl::opt<char>
   OptLevel("O",
@@ -99,8 +113,11 @@ namespace {
 static ExecutionEngine *EE = 0;
 
 static void do_shutdown() {
+  // Cygwin-1.5 invokes DLL's dtors before atexit handler.
+#ifndef DO_NOTHING_ATEXIT
   delete EE;
   llvm_shutdown();
+#endif
 }
 
 //===----------------------------------------------------------------------===//
@@ -125,20 +142,15 @@ int main(int argc, char **argv, char * const *envp) {
     sys::Process::PreventCoreFiles();
   
   // Load the bitcode...
-  std::string ErrorMsg;
-  Module *Mod = NULL;
-  if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)){
-    Mod = getLazyBitcodeModule(Buffer, Context, &ErrorMsg);
-    if (!Mod) delete Buffer;
-  }
-  
+  SMDiagnostic Err;
+  Module *Mod = ParseIRFile(InputFile, Err, Context);
   if (!Mod) {
-    errs() << argv[0] << ": error loading program '" << InputFile << "': "
-           << ErrorMsg << "\n";
-    exit(1);
+    Err.Print(argv[0], errs());
+    return 1;
   }
 
   // If not jitting lazily, load the whole bitcode file eagerly too.
+  std::string ErrorMsg;
   if (NoLazyCompilation) {
     if (Mod->MaterializeAllPermanently(&ErrorMsg)) {
       errs() << argv[0] << ": bitcode didn't read correctly.\n";
@@ -160,6 +172,10 @@ int main(int argc, char **argv, char * const *envp) {
   if (!TargetTriple.empty())
     Mod->setTargetTriple(Triple::normalize(TargetTriple));
 
+  // Enable MCJIT, if desired.
+  if (UseMCJIT)
+    builder.setUseMCJIT(true);
+
   CodeGenOpt::Level OLvl = CodeGenOpt::Default;
   switch (OptLevel) {
   default: