Expose SIMD.Float32x4 type to Javascript.

src/mips/lithium-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.7
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2162 matching lines @@
         __ bind(&not_string);
       }
 
       if (expected.Contains(ToBooleanStub::SYMBOL)) {
         // Symbol value -> true.
         const Register scratch = scratch1();
         __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
         __ Branch(instr->TrueLabel(chunk_), eq, scratch, Operand(SYMBOL_TYPE));
       }
 
+      if (expected.Contains(ToBooleanStub::SIMD_TYPE)) {
+        // SIMD value -> true.
+        const Register scratch = scratch1();
+        __ lbu(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
+        __ Branch(instr->TrueLabel(chunk_), eq, scratch,
+                  Operand(FLOAT32X4_TYPE));
+      }
+
       if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) {
         // heap number -> false iff +0, -0, or NaN.
         DoubleRegister dbl_scratch = double_scratch0();
         Label not_heap_number;
         __ LoadRoot(at, Heap::kHeapNumberMapRootIndex);
         __ Branch(&not_heap_number, ne, map, Operand(at));
         __ ldc1(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset));
         __ BranchF(instr->TrueLabel(chunk_), instr->FalseLabel(chunk_),
                    ne, dbl_scratch, kDoubleRegZero);
         // Falls through if dbl_scratch == 0.
@@ skipping 3515 matching lines @@
     __ Branch(USE_DELAY_SLOT, false_label,
               gt, scratch, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE));
     // map is still valid, so the BitField can be loaded in delay slot.
     // Check for undetectable objects => false.
     __ lbu(at, FieldMemOperand(map, Map::kBitFieldOffset));
     __ And(at, at, 1 << Map::kIsUndetectable);
     *cmp1 = at;
     *cmp2 = Operand(zero_reg);
     final_branch_condition = eq;
 
+  } else if (String::Equals(type_name, factory->float32x4_string())) {
+    __ JumpIfSmi(input, false_label);
+    __ GetObjectType(input, input, scratch);
+    *cmp1 = scratch;
+    *cmp2 = Operand(FLOAT32X4_TYPE);
+    final_branch_condition = eq;
+
   } else {
     *cmp1 = at;
     *cmp2 = Operand(zero_reg);  // Set to valid regs, to avoid caller assertion.
     __ Branch(false_label);
   }
 
   return final_branch_condition;
 }
 
 
@@ skipping 298 matching lines @@
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8