X64: Disassembler updated to using REX, extended registers and some X64 opcodes.

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 190 matching lines @@
   int builtins_offset =
       JSBuiltinsObject::kJSBuiltinsOffset + (id * kPointerSize);
   movq(rdi, FieldOperand(rdx, builtins_offset));
 
 
   return Builtins::GetCode(id, resolved);
 }
 
 
 void MacroAssembler::Set(Register dst, int64_t x) {
-  if (is_int32(x)) {
+  if (x == 0) {
+    xor_(dst, dst);
+  } else if (is_int32(x)) {
     movq(dst, Immediate(x));
   } else if (is_uint32(x)) {
     movl(dst, Immediate(x));
   } else {
     movq(dst, x, RelocInfo::NONE);
   }
 }
 
 
 void MacroAssembler::Set(const Operand& dst, int64_t x) {
-  if (is_int32(x)) {
-    movq(kScratchRegister, Immediate(x));
+  if (x == 0) {
+    xor_(kScratchRegister, kScratchRegister);
+    movq(dst, kScratchRegister);
+  } else if (is_int32(x)) {
+    movq(dst, Immediate(x));
   } else if (is_uint32(x)) {
-    movl(kScratchRegister, Immediate(x));
+    movl(dst, Immediate(x));
   } else {
     movq(kScratchRegister, x, RelocInfo::NONE);
+    movq(dst, kScratchRegister);
   }
-  movq(dst, kScratchRegister);
 }
 
 
 bool MacroAssembler::IsUnsafeSmi(Smi* value) {
   return false;
 }
 
 void MacroAssembler::LoadUnsafeSmi(Register dst, Smi* source) {
   UNIMPLEMENTED();
 }
 
 
 void MacroAssembler::Move(Register dst, Handle<Object> source) {
+  ASSERT(!source->IsFailure());
   if (source->IsSmi()) {
     if (IsUnsafeSmi(source)) {
       LoadUnsafeSmi(dst, source);
     } else {
-      movq(dst, source, RelocInfo::NONE);
+      int32_t smi = static_cast<int32_t>(reinterpret_cast<intptr_t>(*source));
+      movq(dst, Immediate(smi));
     }
   } else {
     movq(dst, source, RelocInfo::EMBEDDED_OBJECT);
   }
 }
 
 
 void MacroAssembler::Move(const Operand& dst, Handle<Object> source) {
-  Move(kScratchRegister, source);
-  movq(dst, kScratchRegister);
+  if (source->IsSmi()) {
+    int32_t smi = static_cast<int32_t>(reinterpret_cast<intptr_t>(*source));
+    movq(dst, Immediate(smi));
+  } else {
+    movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT);
+    movq(dst, kScratchRegister);
+  }
 }
 
 
 void MacroAssembler::Cmp(Register dst, Handle<Object> source) {
   Move(kScratchRegister, source);
   cmpq(dst, kScratchRegister);
 }
 
 
 void MacroAssembler::Cmp(const Operand& dst, Handle<Object> source) {
-  Move(kScratchRegister, source);
-  cmpq(dst, kScratchRegister);
+  if (source->IsSmi()) {
+    if (IsUnsafeSmi(source)) {
+      LoadUnsafeSmi(kScratchRegister, source);
+      cmpl(dst, kScratchRegister);
+    } else {
+      // For smi-comparison, it suffices to compare the low 32 bits.
+      int32_t smi = static_cast<int32_t>(reinterpret_cast<intptr_t>(*source));
+      cmpl(dst, Immediate(smi));
+    }
+  } else {
+    ASSERT(source->IsHeapObject());
+    movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT);
+    cmpq(dst, kScratchRegister);
+  }
 }
 
 
 void MacroAssembler::Push(Handle<Object> source) {
-  Move(kScratchRegister, source);
-  push(kScratchRegister);
+  if (source->IsSmi()) {
+    if (IsUnsafeSmi(source)) {
+      LoadUnsafeSmi(kScratchRegister, source);
+      push(kScratchRegister);
+    } else {
+      int32_t smi = static_cast<int32_t>(reinterpret_cast<intptr_t>(*source));
+      push(Immediate(smi));
+    }
+  } else {
+    ASSERT(source->IsHeapObject());
+    movq(kScratchRegister, source, RelocInfo::EMBEDDED_OBJECT);
+    push(kScratchRegister);
+  }
 }
 
 
 void MacroAssembler::Jump(ExternalReference ext) {
   movq(kScratchRegister, ext);
   jmp(kScratchRegister);
 }
 
 
 void MacroAssembler::Jump(Address destination, RelocInfo::Mode rmode) {
@@ skipping 555 matching lines @@
   push(rcx);
 
   // Clear the top frame.
   ExternalReference c_entry_fp_address(Top::k_c_entry_fp_address);
   movq(kScratchRegister, c_entry_fp_address);
   movq(Operand(kScratchRegister, 0), Immediate(0));
 }
 
 
 } }  // namespace v8::internal