• jarin's avatar
    [turbofan] Introduce explicit loop exits markers. · 7a61bbcf
    jarin authored
    This CL introduces explicit LoopExit control nodes at loop exits.
    We also attach explicit value renames (LoopExitMarker) and effect
    rename (LoopExitEffect) to each loop exit. This is in preparation
    to loop peeling, which will replace LoopExit, LoopExitMarker and
    LoopExitEffect with Merge, Phi and EffectPhi respectively.
    
    At the moment, we insert loop exit at every return, break,
    continue and locally caught throw. We do not yet handle
    uncaught throws (including error throws, such as ReferenceError).
    
    Review-Url: https://codereview.chromium.org/2140673007
    Cr-Commit-Position: refs/heads/master@{#37769}
    7a61bbcf
dead-code-elimination.h 1.56 KB