Revert "[zlib] Adding PMULL based CRC-32 for aarch64"
This reverts commit a0771caebe87477558454cc6d793562e3afe74ac. Reason for revert: Missing call to CPU features detection Original change's description: > [zlib] Adding PMULL based CRC-32 for aarch64 > > Using the polynomial multiplication instruction allows to improve a bit > more the decompression speed of gzipped content in zlib. > > The average gains are not massive though (around +4.9%), but is more expressive > for some relevant content (e.g. +10% for HTMLx4 & JPEG, +6% for JS) in more > recent chip designs. > > Since Chrome is distributed as a 64bit binary (i.e. aarch64) only for > higher end devices, it should be safe from a performance perspective. > > For lower spec devices, the same serial crc32 code using the crypto > extensions is used, therefore no change on behavior for 32bit. > > Bug: 873725 > Change-Id: I33b9b345b82b5256ec922324984f9a371949bbe6 > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2422723 > Reviewed-by: Chris Blume <cblume@chromium.org> > Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org> > Cr-Commit-Position: refs/heads/main@{#1006184} Bug: 873725 Change-Id: I7b6a2bfb60a96bc640b59187c5dd63590d09599e Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3659852 Reviewed-by: Noel Gordon <noel@chromium.org> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Noel Gordon <noel@chromium.org> Cr-Commit-Position: refs/heads/main@{#1006331} NOKEYCHECK=True GitOrigin-RevId: 42a820acf433146b284bb195b0c3507244cf1c30
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