• Milad Farazmand's avatar
    PPC/s390: [interpreter] Make FunctionEntry StackCheck bytecodes implicit · 9987977e
    Milad Farazmand authored
    Port 9d3dc6f2
    
    Original Commit Message:
    
      FunctionEntry StackChecks is one of the two cases where we generate a
      StackCheck bytecode. In these cases, we do stack check against the js
      limit (not to be confused with the real js limit). Their purpose is to
      be able to interrupt the running code.
    
      We can omit the FunctionEntry StackCheck by embedding its code into
      the InterpreterEntryTrampoline builtin. We save one bytecode per
      interpreted function.
    
      This change has rippling effects for optimized code, as well as the
      deoptimizer.
    
    R=solanes@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
    BUG=
    LOG=N
    
    Change-Id: If797a8acba7581c9c388ac09b5554c774c5993a2
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2048124Reviewed-by: 's avatarJunliang Yan <jyan@ca.ibm.com>
    Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
    Cr-Commit-Position: refs/heads/master@{#66210}
    9987977e
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