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

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index 6ce5493ecf48f5b4be64931ee606938613996f8f..ce2099da2d6c9ddb1ab6e947f14a5805b3c47f4c 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -378,6 +378,11 @@ void Assembler::Align(int m) {
 }
 
 
+void Assembler::CodeTargetAlign() {
+  Align(16);  // Preferred alignment of jump targets on ia32.
+}
+
+
 void Assembler::cpuid() {
   ASSERT(CpuFeatures::IsEnabled(CPUID));
   EnsureSpace ensure_space(this);