Inline code generation for %_IsTypedArray

src/ia32/full-codegen-ia32.cc

Index: src/ia32/full-codegen-ia32.cc
diff --git a/src/ia32/full-codegen-ia32.cc b/src/ia32/full-codegen-ia32.cc
index 202740b385cc93bef3ba8e9a966d8d6a2708f004..f27dd21d5a13fbb541c472ebf1c5d31f4246570b 100644
--- a/src/ia32/full-codegen-ia32.cc
+++ b/src/ia32/full-codegen-ia32.cc
@@ -3513,7 +3513,6 @@ void FullCodeGenerator::EmitIsMinusZero(CallRuntime* expr) {
 }
 
 
-
 void FullCodeGenerator::EmitIsArray(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);
@@ -3536,6 +3535,28 @@ void FullCodeGenerator::EmitIsArray(CallRuntime* expr) {
 }
 
 
+void FullCodeGenerator::EmitIsTypedArray(CallRuntime* expr) {
+  ZoneList<Expression*>* args = expr->arguments();
+  DCHECK(args->length() == 1);
+
+  VisitForAccumulatorValue(args->at(0));
+
+  Label materialize_true, materialize_false;
+  Label* if_true = NULL;
+  Label* if_false = NULL;
+  Label* fall_through = NULL;
+  context()->PrepareTest(&materialize_true, &materialize_false, &if_true,
+                         &if_false, &fall_through);
+
+  __ JumpIfSmi(eax, if_false);
+  __ CmpObjectType(eax, JS_TYPED_ARRAY_TYPE, ebx);
+  PrepareForBailoutBeforeSplit(expr, true, if_true, if_false);
+  Split(equal, if_true, if_false, fall_through);
+
+  context()->Plug(if_true, if_false);
+}
+
+
 void FullCodeGenerator::EmitIsRegExp(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 1);