TOC-end symbols

TOC symbols use the storage-mapping class.

Most TOC symbols use the storage-mapping class TC. These symbols are collected at link time in an arbitrary order. If TOC overflow occurs, it is useful to move some TOC symbols to the end of the TOC and use an alternate code sequence to reference these symbols. Symbols to be moved to the end must use the storage-mapping class TE. Symbols with the TE storage-mapping class are treated identically to symbols with the TC storage-mapping class, except with respect to the RLDs chosen when the symbols are used in D-form instructions.