Add Simd128Value code stubs.

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 461baaa4e6d71447b186938e8bba55a87ec3f7e7..62a848850d14bbbfd8947fbfe7db5513b9f002ad 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -1213,6 +1213,21 @@ Handle<Code> AllocateMutableHeapNumberStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
+#define SIMD128_VALUE_STUB(TYPE, Type, type, lane_count, lane_type)           \
+  template <>                                                                 \
+  HValue* CodeStubGraphBuilder<Allocate##Type##Stub>::BuildCodeStub() {       \
+    HValue* result =                                                          \
+        Add<HAllocate>(Add<HConstant>(Simd128Value::kSize),                   \

[Benedikt Meurer, 2016/02/18 05:12:26]

Not sure that HAllocate get's the alignment correct for Simd128Values, you might
want to check that first.

+                       HType::HeapObject(), NOT_TENURED, SIMD128_VALUE_TYPE); \
+    AddStoreMapConstant(result, isolate()->factory()->type##_map());          \
+    return result;                                                            \
+  }                                                                           \
+                                                                              \
+  Handle<Code> Allocate##Type##Stub::GenerateCode() {                         \
+    return DoGenerateCode(this);                                              \
+  }
+SIMD128_TYPES(SIMD128_VALUE_STUB)
+#undef SIMD128_VALUE_STUB
 
 template <>
 HValue* CodeStubGraphBuilder<AllocateInNewSpaceStub>::BuildCodeStub() {