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Compiler implementation of the D programming language.
||Closures are implemented by taking the local variables that need to survive the scope of the function, and copying them into a gc allocated chuck of memory. That chunk, called the closure here, is inserted into the linked list of stack frames instead of the usual stack frame.|
||Return elem that evaluates to the static frame pointer for function fd. If fd is a member function, the returned expression will compute the value of fd's 'this' variable. This routine is critical for implementing nested functions.|
||Produce elem which increments the usage count for a particular line. Used to implement -cov switch (coverage analysis).|
||Convert intrinsic function to operator. Returns that operator, -1 if not an intrinsic function.|
||Given an expression e that is an array, determine and set the 'length' variable.|
||Determine return style of function - whether in registers or through a hidden pointer to the caller's stack.|
||Initialize the hidden aggregate member, vthis, with the context pointer.|