Vector ICs: Introduce Store and KeyedStore IC code stubs.

src/interface-descriptors.h

Index: src/interface-descriptors.h
diff --git a/src/interface-descriptors.h b/src/interface-descriptors.h
index 62158fe025ca746d774479ff44804e2203a5a1b3..6fc1a345ec450f38b5e761c5a4011fdc129e282b 100644
--- a/src/interface-descriptors.h
+++ b/src/interface-descriptors.h
@@ -18,6 +18,8 @@ class PlatformInterfaceDescriptor;
   V(Store)                                    \
   V(StoreTransition)                          \
   V(ElementTransitionAndStore)                \
+  V(VectorStoreICTrampoline)                  \
+  V(VectorStoreIC)                            \
   V(Instanceof)                               \
   V(LoadWithVector)                           \
   V(FastNewClosure)                           \
@@ -256,6 +258,32 @@ class InstanceofDescriptor : public CallInterfaceDescriptor {
 };
 
 
+class VectorStoreICTrampolineDescriptor : public StoreDescriptor {
+ public:
+  DECLARE_DESCRIPTOR(VectorStoreICTrampolineDescriptor, StoreDescriptor)
+
+  enum ParameterIndices { kReceiverIndex, kNameIndex, kValueIndex, kSlotIndex };
+
+  static const Register SlotRegister();
+};
+
+
+class VectorStoreICDescriptor : public VectorStoreICTrampolineDescriptor {
+ public:
+  DECLARE_DESCRIPTOR(VectorStoreICDescriptor, VectorStoreICTrampolineDescriptor)
+
+  enum ParameterIndices {
+    kReceiverIndex,
+    kNameIndex,
+    kValueIndex,
+    kSlotIndex,
+    kVectorIndex
+  };
+
+  static const Register VectorRegister();
+};
+
+
 class LoadWithVectorDescriptor : public LoadDescriptor {

[Jakob Kummerow, 2015/05/22 11:38:17]

Drive-by: maybe put a TODO here to unify these two, now that loads always use
the vector?

[mvstanton, 2015/05/22 12:06:16]

Ah, okay. No, this is appropriate and maybe it's a naming issue.
Now...LoadDescriptor is a thing that, being inherently vectorized has a
SlotRegister(). And LoadWithVectorDescriptor is for the version of the IC called
by optimized code where the vector is explicitly passed, rather than retrieved
from the frame.

So, "Vector" here, now, means actually pass the vector. The absence of the word
means, please get it from the frame.

The new StoreICs will go through a similar naming convolution, first using the
word Vector to indicate a type of thing...a "vectorized ic", and later using it
to mean something more humdrum. :p

  public:
   DECLARE_DESCRIPTOR(LoadWithVectorDescriptor, LoadDescriptor)