• kmillikin@chromium.org's avatar
    Rework flow graph construction. · 81779f63
    kmillikin@chromium.org authored
    The flow graph has been simplified to remove the special branch, join,
    and exit nodes.  All nodes are now basic blocks (possibly empty to
    preserve edge-split form) with a distinguished entry and exit block.
    
    Most trivial expressions are not added to the flow graph as
    instructions.  The assigned variable analyzer has been changed to
    sometimes work right-to-left so that right subexpressions can be
    marked as trivial.
    
    The reaching definitions analysis has been temporarily removed, and
    the analyses that depended on it (primitivity analysis, dead code
    marking) as well.
    
    Review URL: http://codereview.chromium.org/1530003
    
    git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4307 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
    81779f63
data-flow.cc 17.9 KB