More -fsanitize=vptr fixes.

src/compiler/operator.h

Index: src/compiler/operator.h
diff --git a/src/compiler/operator.h b/src/compiler/operator.h
index d6f80ad1cf7e34affd8bc97b5ea82b2ffb220923..fb144ce896a4355a738371de31c9177a1e7f22ab 100644
--- a/src/compiler/operator.h
+++ b/src/compiler/operator.h
@@ -172,6 +172,20 @@ inline T const& OpParameter(const Operator* op) {
   return static_cast<const Operator1<T>*>(op)->parameter();
 }
 
+// NOTE: We have to be careful to use the right equal/hash functions below, for
+// float/double we always use the ones operating on the bit level.
+template <>
+inline float const& OpParameter(const Operator* op) {
+  return static_cast<const Operator1<float, base::bit_equal_to<float>,
+                                     base::bit_hash<float>>*>(op)->parameter();
+}
+
+template <>
+inline double const& OpParameter(const Operator* op) {
+  return static_cast<const Operator1<double, base::bit_equal_to<double>,
+                                     base::bit_hash<double>>*>(op)->parameter();
+}
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8