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<div class="moz-cite-prefix">On 01/26/2017 12:45 AM, Nemanja
Ivanovic via llvm-dev wrote:<br>
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<div>This has actually come up in the context of a JIT, but
I think that having the functionality in general could be
useful.<br>
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Currently, there does not appear to be an API in LLVM to
query for LLVM version information. In the particular
context where this came up, LLVM is used as a shared library
and various functionality (and bug fixes) used by the JIT is
available in various LLVM versions. So it would be quite
convenient to be able to dynamically determine the version
that happens to be loaded.<br>
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Honestly, I am not completely clear on what the best place for
something like this would be, but it appears that the
following seems like a natural choice:<br>
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<span style="font-family:monospace,monospace">llvm::VersionPrinter</span>
in <span style="font-family:monospace,monospace">lib/Support/CommandLine.cpp</span>
already queries this data so it might make sense for it to
expose the following API's (as part of <span
style="font-family:monospace,monospace">VersionPrinter</span>,
accessed through the instance):<br>
<span style="font-family:monospace,monospace">llvm::cl::getVersionMajor()</span><br>
<span style="font-family:monospace,monospace">llvm::cl::getVersionMinor()<br>
</span><span style="font-family:monospace,monospace">llvm::cl::getVersionPatch()</span><br>
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Makes sense to me, although I see no reason for the functions to be
in the 'cl' namespace.<br>
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 -Hal<br>
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<pre class="moz-signature" cols="72">--
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory</pre>
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