Class AstAssertInstruction


  • public class AstAssertInstruction
    extends SSAInstruction
    An assert statement, as found in a variety of languages. It has a use which is the value being asserted to be true. Additionally, there is flag which denotes whether the assertion is from a specification (the usual case) or is an assertion introduced by "compilation" of whatever sort (e.g. to add assertions regarding loop conditions needed by bounded model checking).
    • Constructor Detail

      • AstAssertInstruction

        public AstAssertInstruction​(int iindex,
                                    int value,
                                    boolean fromSpecification)
    • Method Detail

      • getUse

        public int getUse​(int i)
        Overrides:
        getUse in class SSAInstruction
        Returns:
        value number representing the jth use in this instruction. -1 means TOP (i.e., the value doesn't matter)
      • copyForSSA

        public SSAInstruction copyForSSA​(SSAInstructionFactory insts,
                                         int[] defs,
                                         int[] uses)
        Description copied from class: SSAInstruction
        This method is meant to be used during SSA conversion for an IR that is not in SSA form. It creates a new SSAInstruction of the same type as the receiver, with a combination of the receiver's uses and defs and those from the method parameters. In particular, if the 'defs' parameter is null, then the new instruction has the same defs as the receiver. If 'defs' is not null, it must be an array with a size equal to the number of defs that the receiver instruction has. In this case, the new instruction has defs taken from the array. The uses of the new instruction work in the same way with the 'uses' parameter. Note that this only applies to CAst-based IR translation, since Java bytecode-based IR generation uses a different SSA construction mechanism. TODO: move this into the SSAInstructionFactory
        Specified by:
        copyForSSA in class SSAInstruction
      • isFallThrough

        public boolean isFallThrough()
        Specified by:
        isFallThrough in class SSAInstruction
        Returns:
        true iff this instruction may fall through to the next
      • isFromSpecification

        public boolean isFromSpecification()