X64 Crankshaft: Implement Math.abs on x64 lithium.

src/x64/macro-assembler-x64.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1485 matching lines @@
     10,
     -1
 };
 
 
 void MacroAssembler::StoreToSafepointRegisterSlot(Register dst, Register src) {
   movq(SafepointRegisterSlot(dst), src);
 }
 
 
+void MacroAssembler::LoadFromSafepointRegisterSlot(Register dst, Register src) {
+  movq(dst, SafepointRegisterSlot(src));
+}
+
+
 Operand MacroAssembler::SafepointRegisterSlot(Register reg) {
   return Operand(rsp, SafepointRegisterStackIndex(reg.code()) * kPointerSize);
 }
 
 
 void MacroAssembler::PushTryHandler(CodeLocation try_location,
                                     HandlerType type) {
   // Adjust this code if not the case.
   ASSERT(StackHandlerConstants::kSize == 4 * kPointerSize);
 
@@ skipping 1130 matching lines @@
   CPU::FlushICache(address_, size_);
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64