Revert of Remove SIMD.js from V8.

src/builtins/builtins-array.cc

Index: src/builtins/builtins-array.cc
diff --git a/src/builtins/builtins-array.cc b/src/builtins/builtins-array.cc
index 5111f966b170addf9f1b0c11399cdddc4755a615..a82a1a98a646675ba0cc242633607cbee81d063f 100644
--- a/src/builtins/builtins-array.cc
+++ b/src/builtins/builtins-array.cc
@@ -1808,8 +1808,9 @@
     Variable search_num(&assembler, MachineRepresentation::kFloat64);
     Label ident_loop(&assembler, &index_var),
         heap_num_loop(&assembler, &search_num),
-        string_loop(&assembler, &index_var), undef_loop(&assembler, &index_var),
-        not_smi(&assembler), not_heap_num(&assembler);
+        string_loop(&assembler, &index_var), simd_loop(&assembler),
+        undef_loop(&assembler, &index_var), not_smi(&assembler),
+        not_heap_num(&assembler);
 
     assembler.GotoUnless(assembler.TaggedIsSmi(search_element), &not_smi);
     search_num.Bind(assembler.SmiToFloat64(search_element));
@@ -1826,6 +1827,10 @@
     assembler.Bind(&not_heap_num);
     Node* search_type = assembler.LoadMapInstanceType(map);
     assembler.GotoIf(assembler.IsStringInstanceType(search_type), &string_loop);
+    assembler.GotoIf(
+        assembler.Word32Equal(search_type,
+                              assembler.Int32Constant(SIMD128_VALUE_TYPE)),
+        &simd_loop);
     assembler.Goto(&ident_loop);
 
     assembler.Bind(&ident_loop);
@@ -1937,6 +1942,31 @@
       index_var.Bind(assembler.IntPtrAdd(index_var.value(), intptr_one));
       assembler.Goto(&string_loop);
     }
+
+    assembler.Bind(&simd_loop);
+    {
+      Label continue_loop(&assembler, &index_var),
+          loop_body(&assembler, &index_var);
+      Node* map = assembler.LoadMap(search_element);
+
+      assembler.Goto(&loop_body);
+      assembler.Bind(&loop_body);
+      assembler.GotoUnless(
+          assembler.UintPtrLessThan(index_var.value(), len_var.value()),
+          &return_false);
+
+      Node* element_k =
+          assembler.LoadFixedArrayElement(elements, index_var.value());
+      assembler.GotoIf(assembler.TaggedIsSmi(element_k), &continue_loop);
+
+      Node* map_k = assembler.LoadMap(element_k);
+      assembler.BranchIfSimd128Equal(search_element, map, element_k, map_k,
+                                     &return_true, &continue_loop);
+
+      assembler.Bind(&continue_loop);
+      index_var.Bind(assembler.IntPtrAdd(index_var.value(), intptr_one));
+      assembler.Goto(&loop_body);
+    }
   }
 
   assembler.Bind(&if_packed_doubles);
@@ -2215,8 +2245,9 @@
     Variable search_num(&assembler, MachineRepresentation::kFloat64);
     Label ident_loop(&assembler, &index_var),
         heap_num_loop(&assembler, &search_num),
-        string_loop(&assembler, &index_var), undef_loop(&assembler, &index_var),
-        not_smi(&assembler), not_heap_num(&assembler);
+        string_loop(&assembler, &index_var), simd_loop(&assembler),
+        undef_loop(&assembler, &index_var), not_smi(&assembler),
+        not_heap_num(&assembler);
 
     assembler.GotoUnless(assembler.TaggedIsSmi(search_element), &not_smi);
     search_num.Bind(assembler.SmiToFloat64(search_element));
@@ -2233,6 +2264,10 @@
     assembler.Bind(&not_heap_num);
     Node* search_type = assembler.LoadMapInstanceType(map);
     assembler.GotoIf(assembler.IsStringInstanceType(search_type), &string_loop);
+    assembler.GotoIf(
+        assembler.Word32Equal(search_type,
+                              assembler.Int32Constant(SIMD128_VALUE_TYPE)),
+        &simd_loop);
     assembler.Goto(&ident_loop);
 
     assembler.Bind(&ident_loop);
@@ -2322,6 +2357,31 @@
       assembler.Bind(&continue_loop);
       index_var.Bind(assembler.IntPtrAdd(index_var.value(), intptr_one));
       assembler.Goto(&string_loop);
+    }
+
+    assembler.Bind(&simd_loop);
+    {
+      Label continue_loop(&assembler, &index_var),
+          loop_body(&assembler, &index_var);
+      Node* map = assembler.LoadMap(search_element);
+
+      assembler.Goto(&loop_body);
+      assembler.Bind(&loop_body);
+      assembler.GotoUnless(
+          assembler.UintPtrLessThan(index_var.value(), len_var.value()),
+          &return_not_found);
+
+      Node* element_k =
+          assembler.LoadFixedArrayElement(elements, index_var.value());
+      assembler.GotoIf(assembler.TaggedIsSmi(element_k), &continue_loop);
+
+      Node* map_k = assembler.LoadMap(element_k);
+      assembler.BranchIfSimd128Equal(search_element, map, element_k, map_k,
+                                     &return_found, &continue_loop);
+
+      assembler.Bind(&continue_loop);
+      index_var.Bind(assembler.IntPtrAdd(index_var.value(), intptr_one));
+      assembler.Goto(&loop_body);
     }
   }