X64: Make smi memory operations work directly on the embedded value.

src/x64/macro-assembler-x64.cc

 // Copyright 2009 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 585 matching lines @@
   ASSERT(!dst.is(kScratchRegister));
   if (src->value() == 0) {
     testq(dst, dst);
   } else {
     Move(kScratchRegister, src);
     cmpq(dst, kScratchRegister);
   }
 }
 
 
-void MacroAssembler::SmiCompare(Register  dst, const Operand& src) {
+void MacroAssembler::SmiCompare(Register dst, const Operand& src) {
   cmpq(dst, src);
 }
 
 
 void MacroAssembler::SmiCompare(const Operand& dst, Register src) {
   cmpq(dst, src);
 }
 
 
 void MacroAssembler::SmiCompare(const Operand& dst, Smi* src) {
-  if (src->value() == 0) {
-    // Only tagged long smi to have 32-bit representation.
-    cmpq(dst, Immediate(0));
-  } else {
-    Move(kScratchRegister, src);
-    cmpq(dst, kScratchRegister);
-  }
+  cmpl(Operand(dst, kIntSize), Immediate(src->value()));
 }
 
 
 void MacroAssembler::PositiveSmiTimesPowerOfTwoToInteger64(Register dst,
                                                            Register src,
                                                            int power) {
   ASSERT(power >= 0);
   ASSERT(power < 64);
   if (power == 0) {
     SmiToInteger64(dst, src);
@@ skipping 281 matching lines @@
     addq(dst, kScratchRegister);
   } else {
     Move(dst, constant);
     addq(dst, src);
   }
 }
 
 
 void MacroAssembler::SmiAddConstant(const Operand& dst, Smi* constant) {
   if (constant->value() != 0) {
-    Move(kScratchRegister, constant);
-    addq(dst, kScratchRegister);
+    addl(Operand(dst, kIntSize), Immediate(constant->value()));
   }
 }
 
 
 void MacroAssembler::SmiAddConstant(Register dst,
                                     Register src,
                                     Smi* constant,
                                     Label* on_not_smi_result) {
   if (constant->value() == 0) {
     if (!dst.is(src)) {
@@ skipping 663 matching lines @@
 
 
 void MacroAssembler::Drop(int stack_elements) {
   if (stack_elements > 0) {
     addq(rsp, Immediate(stack_elements * kPointerSize));
   }
 }
 
 
 void MacroAssembler::Test(const Operand& src, Smi* source) {
-  intptr_t smi = reinterpret_cast<intptr_t>(source);
-  if (is_int32(smi)) {
-    testl(src, Immediate(static_cast<int32_t>(smi)));
-  } else {
-    Move(kScratchRegister, source);
-    testq(src, kScratchRegister);
-  }
+  testl(Operand(src, kIntSize), Immediate(source->value()));
 }
 
 
 void MacroAssembler::Jump(ExternalReference ext) {
   movq(kScratchRegister, ext);
   jmp(kScratchRegister);
 }
 
 
 void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) {
@@ skipping 1142 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