Rebased PNaCl localmods in LLVM to 223109

lib/Target/X86/X86AsmPrinter.cpp

 //===-- X86AsmPrinter.cpp - Convert X86 LLVM code to AT&T assembly --------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file contains a printer that converts from our internal representation
@@ skipping 12 matching lines @@
 #include "llvm/CodeGen/MachineValueType.h"
 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
 #include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Mangler.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCNaCl.h" // @LOCALMOD
 #include "llvm/MC/MCSectionCOFF.h"
 #include "llvm/MC/MCSectionMachO.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSymbol.h"
 #include "llvm/Support/COFF.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/TargetRegistry.h"
 using namespace llvm;
 
@@ skipping 21 matching lines @@
   // Have common code print out the function header with linkage info etc.
   EmitFunctionHeader();
 
   // Emit the rest of the function body.
   EmitFunctionBody();
 
   // We didn't modify anything.
   return false;
 }
 
+// @LOCALMOD-BEGIN
+bool X86AsmPrinter::UseReadOnlyJumpTables() const {
+  return Subtarget->isTargetNaCl();
+}
+
+unsigned X86AsmPrinter::GetTargetBasicBlockAlign() const {
+  if (Subtarget->isTargetNaCl())
+    return 5;
+  return 0;
+}
+
+unsigned X86AsmPrinter::GetTargetLabelAlign(const MachineInstr *MI) const {
+  if (Subtarget->isTargetNaCl()) {
+    switch (MI->getOpcode()) {
+      default: return 0;
+      // These labels may indicate an indirect entry point that is
+      // externally reachable and hence must be bundle aligned.
+      // Note: these labels appear to be always at basic block beginnings
+      // so it may be possible to simply set the MBB alignment.
+      // However, it is unclear whether this always holds.
+      case TargetOpcode::EH_LABEL:
+      case TargetOpcode::GC_LABEL:
+        return 5;
+    }
+  }
+  return 0;
+}
+// @LOCALMOD-END
+
 /// printSymbolOperand - Print a raw symbol reference operand.  This handles
 /// jump tables, constant pools, global address and external symbols, all of
 /// which print to a label with various suffixes for relocation types etc.
 static void printSymbolOperand(X86AsmPrinter &P, const MachineOperand &MO,
                                raw_ostream &O) {
   switch (MO.getType()) {
   default: llvm_unreachable("unknown symbol type!");
   case MachineOperand::MO_ConstantPoolIndex:
     O << *P.GetCPISymbol(MO.getIndex());
     P.printOffset(MO.getOffset(), O);
@@ skipping 437 matching lines @@
       // for "registered SEH".  This means that all SEH handler entry points
       // must be registered in .sxdata.  Use of any unregistered handlers will
       // cause the process to terminate immediately.  LLVM does not know how to
       // register any SEH handlers, so its object files should be safe.
       S->setAbsolute();
       OutStreamer.EmitSymbolAttribute(S, MCSA_Global);
       OutStreamer.EmitAssignment(
           S, MCConstantExpr::Create(int64_t(1), MMI->getContext()));
     }
   }
+
+  // @LOCALMOD-BEGIN
+  if (Subtarget->isTargetNaCl())
+    initializeNaClMCStreamer(OutStreamer, OutContext,
+                             Subtarget->getTargetTriple());
+  // @LOCALMOD-END
 }
 
 static void
 emitNonLazySymbolPointer(MCStreamer &OutStreamer, MCSymbol *StubLabel,
                          MachineModuleInfoImpl::StubValueTy &MCSym) {
   // L_foo$stub:
   OutStreamer.EmitLabel(StubLabel);
   //   .indirect_symbol _foo
   OutStreamer.EmitSymbolAttribute(MCSym.getPointer(), MCSA_IndirectSymbol);
 
@@ skipping 204 matching lines @@
 
 //===----------------------------------------------------------------------===//
 // Target Registry Stuff
 //===----------------------------------------------------------------------===//
 
 // Force static initialization.
 extern "C" void LLVMInitializeX86AsmPrinter() {
   RegisterAsmPrinter<X86AsmPrinter> X(TheX86_32Target);
   RegisterAsmPrinter<X86AsmPrinter> Y(TheX86_64Target);
 }