GCC Middle and Back End API Reference
Data Fields
label_record Struct Reference

Data Fields

tree label
bool used

Detailed Description

   Cleanup useless labels in basic blocks.  This is something we wish
   to do early because it allows us to group case labels before creating
   the edges for the CFG, and it speeds up block statement iterators in
   all passes later on.
   We rerun this pass after CFG is created, to get rid of the labels that
   are no longer referenced.  After then we do not run it any more, since
   (almost) no new labels should be created.  
   A map from basic block index to the leading label of that block.

Field Documentation

tree label_record::label 
     The label.
bool label_record::used 
     True if the label is referenced from somewhere.
The documentation for this struct was generated from the following file: