bcm5719-llvm/libcxx/include/numeric, branch meklort-10.0.1 Project Ortega BCM5719 LLVM https://git.raptorcs.com/git/bcm5719-llvm/atom?h=meklort-10.0.1 2019-12-21T09:26:24+00:00 [libc++] Fix typo in std::midpoint 2019-12-21T09:26:24+00:00 Ruslan Baratov ruslan_baratov@yahoo.com 2019-12-21T09:22:12+00:00 urn:sha1:6e8659c351fe3a38ed23f5a5b24c1bc143ea00ed Reviewed By: mclow.lists Differential Revision: https://reviews.llvm.org/D71525 Optimize std::midpoint for integers 2019-11-05T03:00:23+00:00 Jorg Brown jorg@google.com 2019-11-05T03:00:23+00:00 urn:sha1:586952f4cefd809b7becd16c6d1e751ea923adfd Same idea as the current algorithm, that is, add (half of the difference between a and b) to a. But we use a different technique for computing the difference: we compute b - a into a pair of integers that are named "sign_bit" and "diff". We have to use a pair because subtracting two 32-bit integers produces a 33-bit result. Computing half of that is a simple matter of shifting diff right by 1, and adding sign_bit shifted left by 31. llvm knows how to do that with one instruction: shld. The only tricky part is that if the difference is odd and negative, then shifting it by one isn't the same as dividing it by two - shifting a negative one produces a negative one, for example. So there's one more adjustment: if the sign bit and the low bit of diff are one, we add one. For a demonstration of the codegen difference, see https://godbolt.org/z/7ar3K9 , which also has a built-in test. Differential Revision: https://reviews.llvm.org/D69459 [pstl][libc++] Provide uglified header names for interface headers 2019-08-06T21:11:24+00:00 Louis Dionne ldionne@apple.com 2019-08-06T21:11:24+00:00 urn:sha1:956892433f7c0ae4520232b07d442fedbcc14cb2 For the few (currently four) headers that make up the PSTL's interface to other Standard Libraries, provide a stable uglified header file that can be included by those Standard Libraries. We can then more easily change the internal organization of the PSTL without having to change the integration with Standard Libraries. llvm-svn: 368088 [libc++] Take 2: Integrate the PSTL into libc++ 2019-08-05T18:29:14+00:00 Louis Dionne ldionne@apple.com 2019-08-05T18:29:14+00:00 urn:sha1:0a06eb911b830cf693747ea6cd975bd97b454e3e Summary: This commit allows specifying LIBCXX_ENABLE_PARALLEL_ALGORITHMS when configuring libc++ in CMake. When that option is enabled, libc++ will assume that the PSTL can be found somewhere on the CMake module path, and it will provide the C++17 parallel algorithms based on the PSTL (that is assumed to be available). The commit also adds support for running the PSTL tests as part of the libc++ test suite. The first attempt to commit this failed because it exposed a bug in the tests for modules. Now that this has been fixed, it should be safe to commit this. Reviewers: EricWF Subscribers: mgorny, christof, jkorous, dexonsmith, libcxx-commits, mclow.lists, EricWF Tags: #libc Differential Revision: https://reviews.llvm.org/D60480 llvm-svn: 367903 Revert "[libc++] Integrate the PSTL into libc++" 2019-07-19T18:52:46+00:00 Louis Dionne ldionne@apple.com 2019-07-19T18:52:46+00:00 urn:sha1:a3c83b7511a56a1bc79784078caab0ad7f8c7abb This reverts r366593, which caused unforeseen breakage on the build bots. I'm reverting until the problems have been figured out and fixed. llvm-svn: 366603 [libc++] Integrate the PSTL into libc++ 2019-07-19T17:02:42+00:00 Louis Dionne ldionne@apple.com 2019-07-19T17:02:42+00:00 urn:sha1:910323e6676f813b28d1320b0d08ece270ee977d Summary: This commit allows specifying LIBCXX_ENABLE_PARALLEL_ALGORITHMS when configuring libc++ in CMake. When that option is enabled, libc++ will assume that the PSTL can be found somewhere on the CMake module path, and it will provide the C++17 parallel algorithms based on the PSTL (that is assumed to be available). The commit also adds support for running the PSTL tests as part of the libc++ test suite. Reviewers: rodgert, EricWF Subscribers: mgorny, christof, jkorous, dexonsmith, libcxx-commits, mclow.lists, EricWF Tags: #libc Differential Revision: https://reviews.llvm.org/D60480 llvm-svn: 366593 Fix the floating point version of midpoint. It wasn't constexpr, among other things. Add more tests. As a drive-by, the LCD implementation had a class named '__abs' which did a 'absolute value to a common-type' conversion. Rename that to be '__ct_abs'. 2019-06-18T18:13:54+00:00 Marshall Clow mclow.lists@gmail.com 2019-06-18T18:13:54+00:00 urn:sha1:8dc6840f1c91a0a0442afa841bff5123efb44334 llvm-svn: 363714 [NFC][libcxx] Remove trailing whitespace 2019-05-29T16:01:36+00:00 Louis Dionne ldionne@apple.com 2019-05-29T16:01:36+00:00 urn:sha1:a2a1ec27d0e799725cdd41f8456deb9a49433e2d It's incredibly annoying when trying to create diffs llvm-svn: 361981 Add additional constraints on midpoint(pointer, pointer). Fixes PR#42037. 2019-05-29T15:17:55+00:00 Marshall Clow mclow.lists@gmail.com 2019-05-29T15:17:55+00:00 urn:sha1:6b03a1b42352e38fafff67c6d8d685144b8f9a4c llvm-svn: 361970 Mark private function __sign as constexpr. 2019-05-07T16:07:24+00:00 Marshall Clow mclow.lists@gmail.com 2019-05-07T16:07:24+00:00 urn:sha1:51497fb8b379878cac0f122b44344a0a3b6a294f llvm-svn: 360167