• Seth Brenith's avatar
    Reland "[torque] Allow storing to bitfield structs that are stored in Smis" · a9270e2b
    Seth Brenith authored
    This is a reland of 80843eda
    
    Original change's description:
    > [torque] Allow storing to bitfield structs that are stored in Smis
    > 
    > This change:
    > 1. Updates the Torque compiler to allow direct access to bitfields that
    >    are packed within Smi values, which previously would have required a
    >    separate untagging step,
    > 2. Updates JSRegExpStringIterator to represent its flags in Torque,
    > 3. Adds reduction cases in MachineOperatorReducer for when the input to
    >    a branch or the left-hand side of a Word32Equals is based on a 64-bit
    >    shift-and-mask operation which has been truncated to 32 bits, as is
    >    the case in the code generated by step 1, and
    > 4. Adds a reduction case in MachineOperatorReducer to remove an extra
    >    Word64And operation added by step 1.
    > 
    > Bug: v8:7793
    > Change-Id: Ib4ac2def6211b3cae6be25a8b2a644be5c7d6d3f
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2119225
    > Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
    > Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
    > Cr-Commit-Position: refs/heads/master@{#67290}
    
    Bug: v8:7793
    Change-Id: I783b6ec080042fec0e922927f6675dede458a072
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2159731Reviewed-by: 's avatarTobias Tebbi <tebbi@chromium.org>
    Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#67305}
    a9270e2b
js-regexp-string-iterator.tq 579 Bytes