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    • verwaest's avatar
      Remove internal use of v8::AccessType, always pass v8::ACCESS_HAS instead. · b5fc4b80
      verwaest authored
      BUG=
      
      Review URL: https://codereview.chromium.org/942963004
      
      Cr-Commit-Position: refs/heads/master@{#26874}
      b5fc4b80
    • jarin's avatar
      Do not touch a binary op IC target in code object marked for lazy deopt. · bb13e7f7
      jarin authored
      Bad scenario:
      
      - Enter a binop IC miss handler from optimized code object C from call
        site S,
      
      - From the binop IC, invoke arbitrary javascript that lazy deopts C,
        so all relocation info is nuked and replaced with lazy deopt entries'
        reloc info. In particular, there is no reloc info for S.
      
      - Still from the arbitrary JavaScript, make IC target's code object move.
        Note that the call site S is not updated.
      
      - Return to the miss handler and inspect the IC's target. This will try
        to get the target from S, but that is a potentially invalid pointer.
      
      It is quite possible that we will have to do a similar fix for other ICs,
      but we will have to find a reliable repro first. I am not submitting a
      repro here because it is quite long running and brittle (it
      relies on code compaction happening while in the binop IC).
      
      BUG=v8:3910
      LOG=n
      R=ishell@chromium.org
      
      Review URL: https://codereview.chromium.org/958473004
      
      Cr-Commit-Position: refs/heads/master@{#26872}
      bb13e7f7
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