[PATCH] D16360: unordered_map: Avoid unnecessary mallocs when no insert occurs

[Duncan P. N. Exon Smith via cfe-commits]

dexonsmith added a subscriber: dexonsmith.
dexonsmith added a comment.

Great, I should have time to clean this up tomorrow afternoon.

Regarding emplace, this patch as is has tests for emplace, but
they depend on r258575 being in tree.  You asked me to revert
that... I'll wait for your response over in that thread:
http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20160118/147795.html

I have a few other questions inline below.


http://reviews.llvm.org/D16360