scala.tools.nsc.backend.jvm.opt
Inliner
Related Doc:
package opt
Test two objects for inequality.
Test two objects for inequality.
true if !(this == that), false otherwise.
Equivalent to x.hashCode except for boxed numeric types and null.
Equivalent to x.hashCode except for boxed numeric types and null.
For numerics, it returns a hash value which is consistent
with value equality: if two value type instances compare
as true, then ## will produce the same hash value for each
of them.
For null returns a hashcode where null.hashCode throws a
NullPointerException.
a hash value consistent with ==
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).
true if the receiver object is equivalent to the argument; false otherwise.
Cast the receiver object to be of type T0.
Cast the receiver object to be of type T0.
Note that the success of a cast at runtime is modulo Scala's erasure semantics.
Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at
runtime, while the expression List(1).asInstanceOf[List[String]] will not.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the requested type.
the receiver object.
ClassCastException if the receiver object is not an instance of the erasure of type T0.
Ordering for inline requests.
Ordering for inline requests. Required to make the inliner deterministic:
Check whether an inling can be performed.
Check whether an inling can be performed. Parmeters are described in method inline.
Some(message) if inlining cannot be performed, None otherwise
Check if a type is accessible to some class, as defined in JVMS 5.4.4.
Check if a type is accessible to some class, as defined in JVMS 5.4.4. (A1) C is public (A2) C and D are members of the same run-time package
Create a copy of the receiver object.
Create a copy of the receiver object.
The default implementation of the clone method is platform dependent.
a copy of the receiver object.
not specified by SLS as a member of AnyRef
The current inlining heuristics are simple: inline calls to methods annotated @inline.
True for statically resolved trait callsites that should be rewritten to the static implementation method.
Tests whether the argument (that) is a reference to the receiver object (this).
Tests whether the argument (that) is a reference to the receiver object (this).
The eq method implements an equivalence relation on
non-null instances of AnyRef, and has three additional properties:
x and y of type AnyRef, multiple invocations of
x.eq(y) consistently returns true or consistently returns false.x of type AnyRef, x.eq(null) and null.eq(x) returns false.null.eq(null) returns true. When overriding the equals or hashCode methods, it is important to ensure that their behavior is
consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they
should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).
true if the argument is a reference to the receiver object; false otherwise.
The equality method for reference types.
Called by the garbage collector on the receiver object when there are no more references to the object.
Called by the garbage collector on the receiver object when there are no more references to the object.
The details of when and if the finalize method is invoked, as
well as the interaction between finalize and non-local returns
and exceptions, are all platform dependent.
not specified by SLS as a member of AnyRef
Returns the first instruction in the instructions list that would cause a
java.lang.IllegalAccessError when inlined into the destinationClass.
Returns the first instruction in the instructions list that would cause a
java.lang.IllegalAccessError when inlined into the destinationClass.
If validity of some instruction could not be checked because an error occurred, the instruction is returned together with a warning message that describes the problem.
A representation that corresponds to the dynamic class of the receiver object.
A representation that corresponds to the dynamic class of the receiver object.
The nature of the representation is platform dependent.
a representation that corresponds to the dynamic class of the receiver object.
not specified by SLS as a member of AnyRef
The hashCode method for reference types.
Copy and adapt the instructions of a method to a callsite.
Copy and adapt the instructions of a method to a callsite.
Preconditions:
null frames
The invocation instruction
The stack height at the callsite
The method in which the invocation occurs
The class in which the callsite method is defined
The invoked method
The class in which the invoked method is defined
true if the receiver is known to be non-null
true if LineNumberNodes should be copied to the call site
Some(message) if inlining cannot be performed, None otherwise
Test whether the dynamic type of the receiver object is T0.
Test whether the dynamic type of the receiver object is T0.
Note that the result of the test is modulo Scala's erasure semantics.
Therefore the expression 1.isInstanceOf[String] will return false, while the
expression List(1).isInstanceOf[List[String]] will return true.
In the latter example, because the type argument is erased as part of compilation it is
not possible to check whether the contents of the list are of the specified type.
true if the receiver object is an instance of erasure of type T0; false otherwise.
Check if a member reference is accessible from the destinationClass, as defined in the JVMS 5.4.4.
Check if a member reference is accessible from the destinationClass, as defined in the JVMS 5.4.4. Note that the class name in a field / method reference is not necessarily the class in which the member is declared:
class A { def f = 0 }; class B extends A { f }
The INVOKEVIRTUAL instruction uses a method reference "B.f ()I". Therefore this method has two parameters:
The class in which the member is declared (A)
The class used in the member reference (B) (B0) JVMS 5.4.3.2 / 5.4.3.3: when resolving a member of class C in D, the class C is resolved first. According to 5.4.3.1, this requires C to be accessible in D. JVMS 5.4.4 summary: A field or method R is accessible to a class D (destinationClass) iff (B1) R is public (B2) R is protected, declared in C (memberDeclClass) and D is a subclass of C. If R is not static, R must contain a symbolic reference to a class T (memberRefClass), such that T is either a subclass of D, a superclass of D, or D itself. Also (P) needs to be satisfied. (B3) R is either protected or has default access and declared by a class in the same run-time package as D. If R is protected, also (P) needs to be satisfied. (B4) R is private and is declared in D. (P) When accessing a protected instance member, the target object on the stack (the receiver) has to be a subtype of D (destinationClass). This is enforced by classfile verification (https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.10.1.8). TODO: we cannot currently implement (P) because we don't have the necessary information available. Once we have a type propagation analysis implemented, we can extract the receiver type from there (https://github.com/scala-opt/scala/issues/13).
Equivalent to !(this eq that).
Equivalent to !(this eq that).
true if the argument is not a reference to the receiver object; false otherwise.
Wakes up a single thread that is waiting on the receiver object's monitor.
Wakes up a single thread that is waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Wakes up all threads that are waiting on the receiver object's monitor.
Wakes up all threads that are waiting on the receiver object's monitor.
not specified by SLS as a member of AnyRef
Rewrite the INVOKEINTERFACE callsite of a final trait method invocation to INVOKESTATIC of the corresponding method in the implementation class.
Rewrite the INVOKEINTERFACE callsite of a final trait method invocation to INVOKESTATIC of the corresponding method in the implementation class. This enables inlining final trait methods.
In a final trait method callsite, the callee is safeToInline and the callee method is abstract (the receiver type is the interface, so the method is abstract).
Select callsites from the call graph that should be inlined.
Select callsites from the call graph that should be inlined. The resulting list of inlining requests is allowed to have cycles, and the callsites can appear in any order.
Creates a String representation of this object.
Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.
a String representation of the object.