Subzero. Native 64-bit int arithmetic on x86-64.

src/IceInstX8664.cpp

 //===- subzero/src/IceInstX8664.cpp - X86-64 instruction implementation ---===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 161 matching lines @@
 MachineTraits<TargetX8664>::X86OperandMem::toAsmAddress(
     MachineTraits<TargetX8664>::Assembler *Asm) const {
   int32_t Disp = 0;
   AssemblerFixup *Fixup = nullptr;
   // Determine the offset (is it relocatable?)
   if (getOffset()) {
     if (const auto CI = llvm::dyn_cast<ConstantInteger32>(getOffset())) {
       Disp = static_cast<int32_t>(CI->getValue());
     } else if (const auto CR =
                    llvm::dyn_cast<ConstantRelocatable>(getOffset())) {
-      Disp = CR->getOffset();
-      Fixup = Asm->createFixup(llvm::ELF::R_386_32, CR);
+      Disp = CR->getOffset() - 4;
+      Fixup = Asm->createFixup(PcRelFixup, CR);
     } else {
       llvm_unreachable("Unexpected offset type");
     }
   }
 
   // Now convert to the various possible forms.
   if (getBase() && getIndex()) {
     return X8664::Traits::Address(
         RegX8664::getEncodedGPR(getBase()->getRegNum()),
         RegX8664::getEncodedGPR(getIndex()->getRegNum()),
@@ skipping 54 matching lines @@
     Var->dump(Func);
   else
     Var->dump(Str);
   Str << ")";
 }
 
 } // namespace X86Internal
 } // end of namespace Ice
 
 X86INSTS_DEFINE_STATIC_DATA(TargetX8664);