ic/dce

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Imports
Types
- AliveContext
- AliveSyms
Procs

Source Edit

Dead code elimination (=DCE) for IC.

Imports

../ast, ../options, ../lineinfos, ../types, packed_ast, ic, bitabs

Types

AliveContext = object ## A stack for marking symbols as alive. ## We need a PackedDecoder for module ID address translations. ## The module we're currently analysing for DCE. ## The final result of our computation.: Purpose is to fill the 'alive' field. Source Edit
AliveSyms = seq[IntSet]: Source Edit

Procs

proc computeAliveSyms(g: PackedModuleGraph; conf: ConfigRef): AliveSyms {. ...raises: [KeyError, Exception], tags: [ReadDirEffect, RootEffect], forbids: [].}: Entry point for our DCE algorithm. Source Edit
proc isAlive(a: AliveSyms; module: int; item: int32): bool {....raises: [], tags: [], forbids: [].}: Backends use this to query if a symbol is alive which means we need to produce (C/C++/etc) code for it. Source Edit