[crankshaft] Remove HLoadKeyedGeneric and use HCallWithDescriptor to call KeyedLoadIC.

src/crankshaft/x64/lithium-x64.h

Index: src/crankshaft/x64/lithium-x64.h
diff --git a/src/crankshaft/x64/lithium-x64.h b/src/crankshaft/x64/lithium-x64.h
index 3fc4ae26a4e0b3f319b4b02b59f3c3f3031a0d90..f3955fb3b4d3f947de0e93ad754bb39c3ae89df9 100644
--- a/src/crankshaft/x64/lithium-x64.h
+++ b/src/crankshaft/x64/lithium-x64.h
@@ -90,7 +90,6 @@ class LCodeGen;
   V(LoadFieldByIndex)                        \
   V(LoadFunctionPrototype)                   \
   V(LoadKeyed)                               \
-  V(LoadKeyedGeneric)                        \
   V(LoadNamedField)                          \
   V(MathAbs)                                 \
   V(MathClz32)                               \
@@ -1547,25 +1546,6 @@ class LLoadKeyed final : public LTemplateInstruction<1, 3, 0> {
 };
 
 
-class LLoadKeyedGeneric final : public LTemplateInstruction<1, 3, 1> {
- public:
-  LLoadKeyedGeneric(LOperand* context, LOperand* obj, LOperand* key,
-                    LOperand* vector) {
-    inputs_[0] = context;
-    inputs_[1] = obj;
-    inputs_[2] = key;
-    temps_[0] = vector;
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(LoadKeyedGeneric, "load-keyed-generic")
-  DECLARE_HYDROGEN_ACCESSOR(LoadKeyedGeneric)
-
-  LOperand* context() { return inputs_[0]; }
-  LOperand* object() { return inputs_[1]; }
-  LOperand* key() { return inputs_[2]; }
-  LOperand* temp_vector() { return temps_[0]; }
-};
-
 class LLoadContextSlot final : public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LLoadContextSlot(LOperand* context) {