Rebased PNaCl localmods in LLVM to 223109

lib/CodeGen/LLVMTargetMachine.cpp

 //===-- LLVMTargetMachine.cpp - Implement the LLVMTargetMachine class -----===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the LLVMTargetMachine class.
@@ skipping 127 matching lines @@
 }
 
 bool LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM,
                                             formatted_raw_ostream &Out,
                                             CodeGenFileType FileType,
                                             bool DisableVerify,
                                             AnalysisID StartAfter,
                                             AnalysisID StopAfter) {
   // Passes to handle jumptable function annotations. These can't be handled at
   // JIT time, so we don't add them directly to addPassesToGenerateCode.
+  // @LOCALMOD: When there is no ModulePassManager in the PMStack, the
+  // JumpInstrTablesPass will silently be dropped and not added to the pass
+  // manager, because it is a module pass.
   PM.add(createJumpInstrTableInfoPass(
       getSubtargetImpl()->getInstrInfo()->getJumpInstrTableEntryBound()));
   PM.add(createJumpInstrTablesPass(Options.JTType));
   if (Options.FCFI)
     PM.add(createForwardControlFlowIntegrityPass(
         Options.JTType, Options.CFIType, Options.CFIEnforcing,
         Options.getCFIFuncName()));
 
   // Add common CodeGen passes.
   MCContext *Context = addPassesToGenerateCode(this, PM, DisableVerify,
@@ skipping 115 matching lines @@
   if (!Printer)
     return true;
 
   // If successful, createAsmPrinter took ownership of AsmStreamer.
   AsmStreamer.release();
 
   PM.add(Printer);
 
   return false; // success!
 }