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<title>kernel/tools/perf/util/c++/Build, branch linux-4.15.y</title>
<subtitle>Hosts the 0x221E linux distro kernel.</subtitle>
<id>https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-4.15.y</id>
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<updated>2016-12-05T18:51:43Z</updated>
<entry>
<title>perf clang: Add builtin clang support ant test case</title>
<updated>2016-12-05T18:51:43Z</updated>
<author>
<name>Wang Nan</name>
<email>wangnan0@huawei.com</email>
</author>
<published>2016-11-26T07:03:34Z</published>
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<content type='text'>
Add basic clang support in clang.cpp and test__clang() testcase. The
first testcase checks if builtin clang is able to generate LLVM IR.

tests/clang.c is a proxy. Real testcase resides in
utils/c++/clang-test.cpp in c++ and exports C interface to perf test
subsystem.

Test result:

   $ perf test -v clang
   51: builtin clang support                               :
   51.1: Test builtin clang compile C source to IR              :
   --- start ---
   test child forked, pid 13215
   test child finished with 0
   ---- end ----
   Test builtin clang support subtest 0: Ok

Committer note:

Make sure you've enabled CLANG and LLVM builtin support by setting
the LIBCLANGLLVM variable on the make command line, e.g.:

  make LIBCLANGLLVM=1 O=/tmp/build/perf -C tools/perf install-bin

Otherwise you'll get this when trying to do the 'perf test' call above:

  # perf test clang
  51: builtin clang support                      : Skip (not compiled in)
  #

Signed-off-by: Wang Nan &lt;wangnan0@huawei.com&gt;
Tested-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Alexei Starovoitov &lt;ast@fb.com&gt;
Cc: He Kuang &lt;hekuang@huawei.com&gt;
Cc: Jiri Olsa &lt;jolsa@kernel.org&gt;
Cc: Joe Stringer &lt;joe@ovn.org&gt;
Cc: Zefan Li &lt;lizefan@huawei.com&gt;
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/20161126070354.141764-11-wangnan0@huawei.com
[ Removed "Test" from descriptions, redundant and already removed from all the other entries ]
Signed-off-by: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
</content>
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