From: Jeff King <peff@peff.net>
Date: Sun, 13 Jul 2014 06:42:17 +0000 (-0400)
Subject: diff-tree: avoid lookup_unknown_object
X-Git-Tag: v2.0.4~3^2
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/b794ebeac9151af4a9136ef28a22a06c2afb17cc?hp=b794ebeac9151af4a9136ef28a22a06c2afb17cc

diff-tree: avoid lookup_unknown_object

We generally want to avoid lookup_unknown_object, because it
results in allocating more memory for the object than may be
strictly necessary.

In this case, it is used to check whether we have an
already-parsed object before calling parse_object, to save
us from reading the object from disk. Using lookup_object
would be fine for that purpose, but we can take it a step
further. Since this code was written, parse_object already
learned the "check lookup_object" optimization, so we can
simply call parse_object directly.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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