Rollback of r11015, r11014, r11011, r11010 in trunk branch.

src/lithium-allocator.cc

Index: src/lithium-allocator.cc
diff --git a/src/lithium-allocator.cc b/src/lithium-allocator.cc
index 4396c7354c76d5f6511821ee8d4a0043565fa411..83805dc729a0f015db1340f7252b6ed550bc7600 100644
--- a/src/lithium-allocator.cc
+++ b/src/lithium-allocator.cc
@@ -46,6 +46,29 @@
 namespace v8 {
 namespace internal {
 
+
+#define DEFINE_OPERAND_CACHE(name, type)                      \
+  name name::cache[name::kNumCachedOperands];                 \
+  void name::SetUpCache() {                                   \
+    for (int i = 0; i < kNumCachedOperands; i++) {            \
+      cache[i].ConvertTo(type, i);                            \
+    }                                                         \
+  }                                                           \
+  static bool name##_initialize() {                           \
+    name::SetUpCache();                                       \
+    return true;                                              \
+  }                                                           \
+  static bool name##_cache_initialized = name##_initialize();
+
+DEFINE_OPERAND_CACHE(LConstantOperand, CONSTANT_OPERAND)
+DEFINE_OPERAND_CACHE(LStackSlot,       STACK_SLOT)
+DEFINE_OPERAND_CACHE(LDoubleStackSlot, DOUBLE_STACK_SLOT)
+DEFINE_OPERAND_CACHE(LRegister,        REGISTER)
+DEFINE_OPERAND_CACHE(LDoubleRegister,  DOUBLE_REGISTER)
+
+#undef DEFINE_OPERAND_CACHE
+
+
 static inline LifetimePosition Min(LifetimePosition a, LifetimePosition b) {
   return a.Value() < b.Value() ? a : b;
 }