Implement Math.tan in generated code.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 093dbce589a33118fac1beac02ba4b9fba291ea3..95ad5e0665db740cd1260e55a5d5d1312c199ae4 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -3034,6 +3034,14 @@ void LCodeGen::DoMathLog(LUnaryMathOperation* instr) {
 }
 
 
+void LCodeGen::DoMathTan(LUnaryMathOperation* instr) {
+  ASSERT(ToDoubleRegister(instr->result()).is(xmm1));
+  TranscendentalCacheStub stub(TranscendentalCache::TAN,
+                               TranscendentalCacheStub::UNTAGGED);
+  CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
+}
+
+
 void LCodeGen::DoMathCos(LUnaryMathOperation* instr) {
   ASSERT(ToDoubleRegister(instr->result()).is(xmm1));
   TranscendentalCacheStub stub(TranscendentalCache::COS,
@@ -3073,6 +3081,9 @@ void LCodeGen::DoUnaryMathOperation(LUnaryMathOperation* instr) {
     case kMathSin:
       DoMathSin(instr);
       break;
+    case kMathTan:
+      DoMathTan(instr);
+      break;
     case kMathLog:
       DoMathLog(instr);
       break;