struct iCode *fuse; /* furthest use */
struct iCode *rematiCode; /* rematerialse with which instruction */
struct operand *reqv; /* register equivalent of a local variable */
+ struct symbol *prereqv; /* symbol before register equiv. substituion */
union
{
struct symbol *spillLoc; /* register spil location */
unsigned offset; /* offset from top if struct */
int lineDef; /* defined line number */
+ char *fileDef; /* defined filename */
int lastLine; /* for functions the last line */
struct sym_link *type; /* 1st link to declator chain */
struct sym_link *etype; /* last link to declarator chn */