Expose SIMD.Float32x4 type to Javascript.

src/ia32/lithium-codegen-ia32.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"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 2146 matching lines @@
         __ jmp(instr->FalseLabel(chunk_));
         __ bind(&not_string);
       }
 
       if (expected.Contains(ToBooleanStub::SYMBOL)) {
         // Symbol value -> true.
         __ CmpInstanceType(map, SYMBOL_TYPE);
         __ j(equal, instr->TrueLabel(chunk_));
       }
 
+      if (expected.Contains(ToBooleanStub::SIMD_VALUE)) {
+        // SIMD value -> true.
+        __ CmpInstanceType(map, FLOAT32X4_TYPE);
+        __ j(equal, instr->TrueLabel(chunk_));
+      }
+
       if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) {
         // heap number -> false iff +0, -0, or NaN.
         Label not_heap_number;
         __ cmp(FieldOperand(reg, HeapObject::kMapOffset),
                factory()->heap_number_map());
         __ j(not_equal, &not_heap_number, Label::kNear);
         XMMRegister xmm_scratch = double_scratch0();
         __ xorps(xmm_scratch, xmm_scratch);
         __ ucomisd(xmm_scratch, FieldOperand(reg, HeapNumber::kValueOffset));
         __ j(zero, instr->FalseLabel(chunk_));
@@ skipping 3326 matching lines @@
     __ j(equal, true_label, true_distance);
     __ CmpObjectType(input, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, input);
     __ j(below, false_label, false_distance);
     __ CmpInstanceType(input, LAST_NONCALLABLE_SPEC_OBJECT_TYPE);
     __ j(above, false_label, false_distance);
     // Check for undetectable objects => false.
     __ test_b(FieldOperand(input, Map::kBitFieldOffset),
               1 << Map::kIsUndetectable);
     final_branch_condition = zero;
 
+  } else if (String::Equals(type_name, factory()->float32x4_string())) {
+    __ JumpIfSmi(input, false_label, false_distance);
+    __ CmpObjectType(input, FLOAT32X4_TYPE, input);
+    final_branch_condition = equal;
+
   } else {
     __ jmp(false_label, false_distance);
   }
   return final_branch_condition;
 }
 
 
 void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) {
   Register temp = ToRegister(instr->temp());
 
@@ skipping 285 matching lines @@
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32