[turbofan] Turn JSToBoolean and JSUnaryNot into pure operators.

src/compiler/js-operator.cc

Index: src/compiler/js-operator.cc
diff --git a/src/compiler/js-operator.cc b/src/compiler/js-operator.cc
index 14dfe6f6b9c8e3b4ec9af0af306a39f18e8caada..aa76a3b6f51e139865dd766f1845d7301499f0df 100644
--- a/src/compiler/js-operator.cc
+++ b/src/compiler/js-operator.cc
@@ -228,8 +228,8 @@ const StoreNamedParameters& StoreNamedParametersOf(const Operator* op) {
   V(Multiply, Operator::kNoProperties, 2, 1)              \
   V(Divide, Operator::kNoProperties, 2, 1)                \
   V(Modulus, Operator::kNoProperties, 2, 1)               \
-  V(UnaryNot, Operator::kNoProperties, 1, 1)              \
-  V(ToBoolean, Operator::kNoProperties, 1, 1)             \
+  V(UnaryNot, Operator::kPure, 1, 1)                      \
+  V(ToBoolean, Operator::kPure, 1, 1)                     \
   V(ToNumber, Operator::kNoProperties, 1, 1)              \
   V(ToString, Operator::kNoProperties, 1, 1)              \
   V(ToName, Operator::kNoProperties, 1, 1)                \