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d586248597
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Author SHA1 Message Date
Howard Hinnant
d586248597 Add test for self-referencing emplace test. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@159921 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-09 02:47:43 +00:00
Howard Hinnant
7a44515588 This commit establishes a new bucket_count policy in the unordered containers: The policy now allows a power-of-2 number of buckets to be requested (and that request honored) by the client. And if the number of buckets is set to a power of 2, then the constraint of the hash to the number of buckets uses & instead of %. If the client does not specify a number of buckets, then the policy remains unchanged: a prime number of buckets is selected. The growth policy is that the number of buckets is roughly doubled when needed. While growing, either the prime, or the power-of-2 strategy will be preserved. There is a small run time cost for putting in this switch. For very cheap hash functions, e.g. identity for int, the cost can be as high as 18%. However with more typical use cases, e.g. strings, the cost is in the noise level. I've measured cases with very cheap hash functions (int) that using a power-of-2 number of buckets can make look up about twice as fast. However I've also noted that a power-of-2 number of buckets is more susceptible to accidental catastrophic collisions. Though I've also noted that accidental catastrophic collisions are also possible when using a prime number of buckets (but seems far less likely). In short, this patch adds an extra tuning knob for those clients trying to get the last bit of performance squeezed out of their hash containers. Casual users of the hash containers will not notice the introduction of this tuning knob. Those clients who swear by power-of-2 hash containers can now opt-in to that strategy. Clients who prefer a prime number of buckets can continue as they have. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@159836 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-06 17:31:14 +00:00
Howard Hinnant
635ce1d127 The rules for emplace in map, multimap, unordered_map and unordered_multimap changed a while back and I'm just now updating to these new rules. In a nutshell, you've got to know you're emplacing to a pair and use one of pair's constructors. I made one extension: If you want to emplace the key and default construct the mapped_type, you can just emplace(key), as opposed to emplace(piecewise_construct, forward_as_tuple(key), forward_as_tuple()). 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@157503 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-25 22:04:21 +00:00
Howard Hinnant
f836d531b4 unord test fixes by Edward Meewis 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@145707 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-02 21:23:14 +00:00
Howard Hinnant
1c3ec6d480 Another installment on debug mode. This addresses list. However this should be considered a temporary state. The API of the debug database and how vector and list use it, is unsatisfactory at the moment. It is both inefficient and overly verbose. I wanted to get this functionality checked in though. In the next day or so I'll refactor what is there in an attempt to streamline things. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@140660 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-27 23:55:03 +00:00
Howard Hinnant
0442b12591 The vector test suite now passes for no-debug, debug-lite and debug-regular 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@139930 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-16 18:41:29 +00:00
Howard Hinnant
e3e3291f3a Fixed PR10574: http://llvm.org/bugs/show_bug.cgi?id=10574 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@137522 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-12 21:56:02 +00:00
Howard Hinnant
58cd8231d8 noexcept for <stack>. This completes noexcept for Chapter 23 [containers]. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132652 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 22:09:19 +00:00
Howard Hinnant
6a09441022 noexcept for <queue>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132650 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 21:32:33 +00:00
Howard Hinnant
04dae1df22 noexcept for <unordered_set>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132647 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 20:18:37 +00:00
Howard Hinnant
5f2f14c5d2 noexcept for <unordered_map>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132646 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 18:54:24 +00:00
Howard Hinnant
b2e2a8f6f3 noexcept for <set>. Plus a few fixes to noexcept for <map>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132640 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 15:22:34 +00:00
Howard Hinnant
7686add61e noexcept for <map>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132639 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-04 14:31:57 +00:00
Howard Hinnant
d1d27a4afa noexcept for <vector>. This also includes installing move_if_noexcept() into vector. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132577 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-03 19:40:40 +00:00
Howard Hinnant
c560727d5e noexcept for <list>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132562 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-03 17:30:28 +00:00
Howard Hinnant
b965fed10b noexcept for <forward_list>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132553 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-03 16:20:53 +00:00
Howard Hinnant
009b2c4583 After sleeping on it I've decided that all special members that can be noexcept, should be declared so. The client has the traits to detect and branch on this information, and it is often an important optimization. Give deque() a noexcept. Add test for deque default constructor and deque destructor. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132549 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-03 15:16:49 +00:00
Howard Hinnant
93f2764b16 Add noexcept tests for deque. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132523 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-03 01:46:22 +00:00
Howard Hinnant
2d01bf0665 Suppress some warings in the tests. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@131326 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-13 23:59:50 +00:00
Howard Hinnant
3e93e96dff Corrected tests for http://llvm.org/bugs/show_bug.cgi?id=9351 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@128807 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-04 01:42:30 +00:00
Howard Hinnant
b8a03c763a ... And these wonderful tests. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@128797 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-03 20:06:31 +00:00
Howard Hinnant
211f0ee1be Bug 9096 - list::iterator not default constructible 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@124508 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-28 23:46:28 +00:00
Howard Hinnant
cd2254b454 LWG 1191 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119545 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-17 19:52:17 +00:00
Howard Hinnant
b64f8b07c1 license change 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-16 22:09:02 +00:00
Howard Hinnant
0d5dff1897 Fix two test bugs 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@116515 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-14 21:08:32 +00:00
Howard Hinnant
e764f0b648 Updated by-chapter-summary with weekly test results, and fixed up some bad paths in some tests caused by aligning the test suite with N3126. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113403 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-08 20:31:42 +00:00
Howard Hinnant
3991b553df sync with N3126 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113101 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-05 01:14:30 +00:00
Howard Hinnant
73d21a4f07 Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113086 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-04 23:28:19 +00:00
Howard Hinnant
6046aced82 Fixing whitespace problems 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111755 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-22 00:15:28 +00:00
Howard Hinnant
7a2523b201 US 117 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111745 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-21 20:58:44 +00:00
Howard Hinnant
ba590bdc97 LWG 1278 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111532 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 17:40:04 +00:00
Howard Hinnant
f5256e16df Wiped out some non-ascii characters that snuck into the copyright. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 21:36:01 +00:00
Howard Hinnant
bc8d3f97eb libcxx initial import 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 19:42:16 +00:00