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3 Commits

Author SHA1 Message Date
Eric Fiselier
91a156579e Fix LWG issue 2345 - Add insert(value_type&&) 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@266585 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-04-18 01:40:45 +00:00
Eric Fiselier
dc414cd8ca Teach map/unordered_map how to optimize 'emplace(Key, T)'. 
In cases where emplace is called with two arguments and the first one
matches the key_type we can Key to check for duplicates before allocating.

This patch expands on work done by dexonsmith@apple.com.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@266498 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-04-16 00:23:12 +00:00
Eric Fiselier
83c9dc1714 Extract key to avoid preemptive mallocs in insert/emplace in associative containers 
Summary: This patch applies Duncan's work on __hash_table to __tree.

Reviewers: mclow.lists, dexonsmith

Subscribers: dexonsmith, cfe-commits

Differential Revision: http://reviews.llvm.org/D18637

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@266491 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-04-15 23:27:27 +00:00