dmd.backend.gother

Other global optimizations

Members

constprop void constprop(): Constant propagation. Also detects use of variable before any possible def.
copyprop void copyprop(): Do copy propagation. Copy propagation elems are of the form OPvar=OPvar, and they are in go.expnod[].
deadvar void deadvar(): Mark all dead variables. Only worry about register candidates. Compute live ranges for register candidates. Be careful not to compute live ranges for members of structures (CLMOS).
elimass void elimass(elem* n): Remove side effect of assignment elem.
find Elemdata* find(Elemdatas eds, elem* e): Find e in Elemdata list.
findloopparameters bool findloopparameters(elem* erel, elem* rdeq, elem* rdinc): Look for initialization and increment expressions in loop. Very similar to intranges().
listrds void listrds(vec_t IN, elem* e, vec_t f, Barray!(elem*)* rdlist): Find all the reaching defs of OPvar e.