X64 Crankshaft: Fix error in computation of sine and cosine.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
===================================================================
--- src/x64/lithium-codegen-x64.cc	(revision 7127)
+++ src/x64/lithium-codegen-x64.cc	(working copy)
@@ -2613,7 +2613,7 @@
 
 void LCodeGen::DoMathCos(LUnaryMathOperation* instr) {
   ASSERT(ToDoubleRegister(instr->result()).is(xmm1));
-  TranscendentalCacheStub stub(TranscendentalCache::LOG,
+  TranscendentalCacheStub stub(TranscendentalCache::COS,
                                TranscendentalCacheStub::UNTAGGED);
   CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
 }
@@ -2621,7 +2621,7 @@
 
 void LCodeGen::DoMathSin(LUnaryMathOperation* instr) {
   ASSERT(ToDoubleRegister(instr->result()).is(xmm1));
-  TranscendentalCacheStub stub(TranscendentalCache::LOG,
+  TranscendentalCacheStub stub(TranscendentalCache::SIN,
                                TranscendentalCacheStub::UNTAGGED);
   CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
 }