X64: Change strategy for spilling to match ia32. It's just better.

src/ia32/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 360 matching lines @@
 
 
 void Assembler::Align(int m) {
   ASSERT(IsPowerOf2(m));
   while ((pc_offset() & (m - 1)) != 0) {
     nop();
   }
 }
 
 
+void Assembler::CodeTargetAlign() {
+  Align(16);  // Preferred alignment of jump targets on ia32.
+}
+
+
 void Assembler::cpuid() {
   ASSERT(CpuFeatures::IsEnabled(CPUID));
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   EMIT(0x0F);
   EMIT(0xA2);
 }
 
 
 void Assembler::pushad() {
@@ skipping 2196 matching lines @@
     fprintf(coverage_log, "%s\n", file_line);
     fflush(coverage_log);
   }
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32