Subzero. X8664. Fixes various small bugs.

src/IceAssemblerX86BaseImpl.h

 //===- subzero/src/IceAssemblerX86BaseImpl.h - base x86 assembler -*- C++ -*-=//
 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Modified by the Subzero authors.
 //
 //===----------------------------------------------------------------------===//
 //
 //                        The Subzero Code Generator
@@ skipping 3159 matching lines @@
 }
 
 template <typename TraitsType>
 void AssemblerX86Base<TraitsType>::jmp(const ConstantRelocatable *label) {
   AssemblerBuffer::EnsureCapacity ensured(&Buffer);
   emitUint8(0xE9);
   emitFixup(this->createFixup(Traits::FK_PcRel, label));
   emitInt32(-4);
 }
 
+template <typename TraitsType>
+void AssemblerX86Base<TraitsType>::jmp(const Immediate &abs_address) {
+  AssemblerBuffer::EnsureCapacity ensured(&Buffer);
+  emitUint8(0xE9);
+  AssemblerFixup *Fixup =
+      this->createFixup(Traits::FK_PcRel, AssemblerFixup::NullSymbol);
+  Fixup->set_addend(abs_address.value());
+  emitFixup(Fixup);
+  emitInt32(abs_address.value() - 4);
+}
+
 template <typename TraitsType> void AssemblerX86Base<TraitsType>::mfence() {
   AssemblerBuffer::EnsureCapacity ensured(&Buffer);
   emitUint8(0x0F);
   emitUint8(0xAE);
   emitUint8(0xF0);
 }
 
 template <typename TraitsType> void AssemblerX86Base<TraitsType>::lock() {
   AssemblerBuffer::EnsureCapacity ensured(&Buffer);
   emitUint8(0xF0);
@@ skipping 319 matching lines @@
   (void)shifter;
   if (Ty == IceType_i16)
     emitOperandSizeOverride();
   emitRexB(Ty, operand.rm());
   emitUint8(isByteSizedArithType(Ty) ? 0xD2 : 0xD3);
   emitOperand(rm, operand);
 }
 
 } // end of namespace X86NAMESPACE
 } // end of namespace Ice