Add graph intrinsics for many math library functions:

runtime/vm/intrinsifier_x64.cc

Index: runtime/vm/intrinsifier_x64.cc
diff --git a/runtime/vm/intrinsifier_x64.cc b/runtime/vm/intrinsifier_x64.cc
index 80b7395b9ff338b58d8904b746bd8d1bbf9e4d17..c3954fd6a48721f1d2938c020a1b09f8933d67ea 100644
--- a/runtime/vm/intrinsifier_x64.cc
+++ b/runtime/vm/intrinsifier_x64.cc
@@ -31,6 +31,18 @@ namespace dart {
 intptr_t Intrinsifier::ParameterSlotFromSp() { return 0; }
 
 
+void Intrinsifier::IntrinsicCallPrologue(Assembler* assembler) {
+  assembler->Comment("IntrinsicCallPrologue");
+  assembler->movq(CALLEE_SAVED_TEMP, R10);
+}
+
+
+void Intrinsifier::IntrinsicCallEpilogue(Assembler* assembler) {
+  assembler->Comment("IntrinsicCallEpilogue");
+  assembler->movq(R10, CALLEE_SAVED_TEMP);
+}
+
+
 void Intrinsifier::ObjectArraySetIndexed(Assembler* assembler) {
   if (Isolate::Current()->type_checks()) {
     return;