Expose SIMD.Float32x4 type to Javascript.

src/arm/lithium-codegen-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/arm/lithium-codegen-arm.h"
 #include "src/arm/lithium-gap-resolver-arm.h"
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 2249 matching lines @@
         __ b(instr->FalseLabel(chunk_));
         __ bind(&not_string);
       }
 
       if (expected.Contains(ToBooleanStub::SYMBOL)) {
         // Symbol value -> true.
         __ CompareInstanceType(map, ip, SYMBOL_TYPE);
         __ b(eq, instr->TrueLabel(chunk_));
       }
 
+      if (expected.Contains(ToBooleanStub::SIMD_VALUE)) {
+        // SIMD value -> true.
+        __ CompareInstanceType(map, ip, FLOAT32X4_TYPE);
+        __ b(eq, instr->TrueLabel(chunk_));
+      }
+
       if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) {
         // heap number -> false iff +0, -0, or NaN.
         DwVfpRegister dbl_scratch = double_scratch0();
         Label not_heap_number;
         __ CompareRoot(map, Heap::kHeapNumberMapRootIndex);
         __ b(ne, &not_heap_number);
         __ vldr(dbl_scratch, FieldMemOperand(reg, HeapNumber::kValueOffset));
         __ VFPCompareAndSetFlags(dbl_scratch, 0.0);
         __ cmp(r0, r0, vs);  // NaN -> false.
         __ b(eq, instr->FalseLabel(chunk_));  // +0, -0 -> false.
@@ skipping 3393 matching lines @@
     __ CheckObjectTypeRange(input,
                             map,
                             FIRST_NONCALLABLE_SPEC_OBJECT_TYPE,
                             LAST_NONCALLABLE_SPEC_OBJECT_TYPE,
                             false_label);
     // Check for undetectable objects => false.
     __ ldrb(scratch, FieldMemOperand(map, Map::kBitFieldOffset));
     __ tst(scratch, Operand(1 << Map::kIsUndetectable));
     final_branch_condition = eq;
 
+  } else if (String::Equals(type_name, factory->float32x4_string())) {
+    __ JumpIfSmi(input, false_label);
+    __ CompareObjectType(input, scratch, no_reg, FLOAT32X4_TYPE);
+    final_branch_condition = eq;
+
   } else {
     __ b(false_label);
   }
 
   return final_branch_condition;
 }
 
 
 void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) {
   Register temp1 = ToRegister(instr->temp());
@@ skipping 296 matching lines @@
   __ push(ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8