tree 1800a7b1e696379376105f5592e9ee6f5c923030
parent 23b9a09482d653aee62f4503189f575ab4175569
author Lei Zhang <thestig@chromium.org> 1624998654 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1624998654 +0000

Pull more code out of the inner loop in CJPX_Decoder::Decode().

The check for `comps.sgnd` will have the same result in every loop
iteration. In a Linux release build, this results in a 2% speedup,
as measured by:
testing/tools/safetynet_measure.py --profiler perfstat bug_1698.pdf,
where bug_1698.pdf is the PDF attached to https://crbug.com/pdfium/1698.

Change-Id: I9d30f65636f72670cd86df82b8baa0b298a88d2c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/82770
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>