Fix SmiCompare on 64 bit to distinguish between comparisons where...

src/x64/assembler-x64.cc

 // Copyright 2011 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 1581 matching lines @@
   // address is not GC safe. Use the handle version instead.
   ASSERT(rmode > RelocInfo::LAST_GCED_ENUM);
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   emit_rex_64(dst);
   emit(0xB8 | dst.low_bits());
   emitq(reinterpret_cast<uintptr_t>(value), rmode);
 }
 
 
+void Assembler::movq(Register dst, Smi* value) {
+  movq(dst, reinterpret_cast<int64_t>(value), RelocInfo::NONE);

[Lasse Reichstein, 2011/03/14 08:51:01]

Please consider using LoadSmi instead. It tries to optimize small smis by lea's
on kSmiConstantRegister, and otherwise defaults to loading it verbatim like
this.

[Erik Corry, 2011/03/14 16:26:45]

Used LoadSmiConstant

+}
+
+
 void Assembler::movq(Register dst, int64_t value, RelocInfo::Mode rmode) {
   // Non-relocatable values might not need a 64-bit representation.
   if (rmode == RelocInfo::NONE) {
     // Sadly, there is no zero or sign extending move for 8-bit immediates.
     if (is_int32(value)) {
       movq(dst, Immediate(static_cast<int32_t>(value)));
       return;
     } else if (is_uint32(value)) {
       movl(dst, Immediate(static_cast<int32_t>(value)));
       return;
@@ skipping 1541 matching lines @@
   // specially coded on x64 means that it is a relative 32 bit address, as used
   // by branch instructions.
   return (1 << rmode_) & kApplyMask;
 }
 
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64