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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I somehow got Rich’s email twice, so I’ll reply to the first one.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">As promised, I’ve submitted a new pull request
<a href="https://github.com/flang-compiler/f18/pull/941">here</a> that adds lit, without FileCheck. This PR just looks at error tests, and I imagine people will want the remaining test types (semantics[symbol, modfile, generic], preprocessing, decimal, evaluate
and runtime) to be ported using the original shell scripts, before swapping them out for FileCheck (which I will be working on simultaneously).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-US">Luke<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-US">Degree Apprentice,<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-US">Arm Manchester
</span><span style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Richard Barton <Richard.Barton@arm.com><br>
<b>Date: </b>Monday, 20 January 2020 at 15:25<br>
<b>To: </b>Timothy Keith <tkeith@nvidia.com>, Finkel, Hal J. <hfinkel@anl.gov>, Stephen Scalpone <sscalpone@nvidia.com>, Luke Ireland <Luke.Ireland@arm.com>, flang-dev@lists.llvm.org <flang-dev@lists.llvm.org><br>
<b>Subject: </b>RE: [flang-dev] Porting F18 tests to use LLVM lit<o:p></o:p></span></p>
</div>
<p class="MsoNormal">Hi Tim<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I really like this idea because it allows us to tackle one of the obstacles towards LLVM unification that is non-controversial on our side and then give proper thought to the more controversial choice of how/if to migrate off the existing
checking scripts in F18. Luke’s going to change direction a bit to explore this avenue.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">He's still working on showing off what FileCheck can do to replace test_errors to further the discussion that started on PR#934. As the above approach would cause those patches to change a lot, Luke will start a new PR for the alternative
approach you propose and add all of the reviewers of PR#934 over as reviewers.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Ta<o:p></o:p></p>
<p class="MsoNormal">Rich<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> flang-dev <flang-dev-bounces@lists.llvm.org>
<b>On Behalf Of </b>Timothy Keith via flang-dev<br>
<b>Sent:</b> 18 January, 2020 17:08<br>
<b>To:</b> Finkel, Hal J. <hfinkel@anl.gov>; Stephen Scalpone <sscalpone@nvidia.com>; Luke Ireland <Luke.Ireland@arm.com><br>
<b>Cc:</b> flang-dev@lists.llvm.org<br>
<b>Subject:</b> Re: [flang-dev] Porting F18 tests to use LLVM lit</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">This change should proceed in two steps:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">1. Run tests with llvm-lit instead of ctest but don't change how tests are checked.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">2. Replace custom checking of results with FileCheck where appropriate.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">The first step should be relatively straight-forward. Once this transition is complete the rest can happen incrementally.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">The second step is more complicated because there are several different kinds of tests with their own requirements for checking the results. The folding tests might be simplified by using FileCheck. I don't know how .mod
file tests and symbol tests can use FileCheck (but my knowledge of FileCheck is limited). There is on-going discussion in PR #934 about how to use FileCheck on the error tests.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Obviously the overriding consideration is making it easy to write high quality tests, run them, and diagnose their failures. Anything we can do to improve that will pay off greatly in the future.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Tim</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.0pt;color:black">From:
</span></b><span lang="EN-US" style="font-size:12.0pt;color:black">flang-dev <<a href="mailto:flang-dev-bounces@lists.llvm.org">flang-dev-bounces@lists.llvm.org</a>> on behalf of "Finkel, Hal J. via flang-dev" <<a href="mailto:flang-dev@lists.llvm.org">flang-dev@lists.llvm.org</a>><br>
<b>Reply-To: </b>"Finkel, Hal J." <<a href="mailto:hfinkel@anl.gov">hfinkel@anl.gov</a>><br>
<b>Date: </b>Friday, January 17, 2020 at 4:41 AM<br>
<b>To: </b>Stephen Scalpone <<a href="mailto:sscalpone@nvidia.com">sscalpone@nvidia.com</a>>, Luke Ireland <<a href="mailto:Luke.Ireland@arm.com">Luke.Ireland@arm.com</a>><br>
<b>Cc: </b>"<a href="mailto:flang-dev@lists.llvm.org">flang-dev@lists.llvm.org</a>" <<a href="mailto:flang-dev@lists.llvm.org">flang-dev@lists.llvm.org</a>><br>
<b>Subject: </b>Re: [flang-dev] Porting F18 tests to use LLVM lit</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
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<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal"><b><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:black">External email: Use caution opening links or attachments</span></b><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:black">
</span><o:p></o:p></p>
</td>
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<p class="MsoNormal"><span lang="EN-US" style="color:white"> </span><o:p></o:p></p>
<div>
<p><span lang="EN-US"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal"><span lang="EN-US">On 1/17/20 2:42 AM, Stephen Scalpone via flang-dev wrote:</span><o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span lang="EN-US">Both swift [1] and clang [2] have built-in capabilities to validate semantic checks. These compilers, like f18 and GCC, use a special markup that is designed to verify diagnostics and to test semantic analysis.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Here’s a sample line from a clang test [2]:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> template<> struct __is_floating_point_helper<__float128> {}; // expected-error {{__float128 is not supported on this target}}</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">From swift [1]:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> private func publicReq() {} // expected-error {{method 'publicReq()' must be declared public because it matches a requirement in public protocol 'PublicProto'}} {{none}}
</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Both clang and swift use lit.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Here’s the lit line from the clang test [2]:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">// RUN: %clang_cc1 -verify -std=c++11 %s</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">From swift [1]:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">// RUN: %target-typecheck-verify-swift -enable-objc-interop -disable-objc-attr-requires-foundation-module -swift-version 5</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">FileCheck appears to be a very powerful tool; however, using FileCheck markup to verify diagnostics is not as straightforward as the markup used in swift and clang tests. [3]</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">The f18 semantic tests and the f18 tools used for verifying diagnostics are similar in spirit to clang’s and swift’s. We could adapt the existing f18 test scripts, e.g. test_errors.sh, to work with lit.
</span><o:p></o:p></p>
</blockquote>
<p><span lang="EN-US"> </span><o:p></o:p></p>
<p><span lang="EN-US">I believe that we should use FileCheck where possible.</span><o:p></o:p></p>
<p><span lang="EN-US"> -Hal</span><o:p></o:p></p>
<p><span lang="EN-US"> </span><o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span lang="EN-US">An alternative form of this proposal is to duplicate the f18 test scripts in python for portability.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">- Steve</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">[1] <a href="https://github.com/apple/swift/blob/master/test/Sema/accessibility.swift">
https://github.com/apple/swift/blob/master/test/Sema/accessibility.swift</a></span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">[2] <a href="https://github.com/llvm/llvm-project/blob/master/clang/test/Sema/128bitfloat.cpp">
https://github.com/llvm/llvm-project/blob/master/clang/test/Sema/128bitfloat.cpp</a></span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">[3] <a href="https://github.com/flang-compiler/f18/pull/934">
https://github.com/flang-compiler/f18/pull/934</a></span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:12.0pt;color:black">From:
</span></b><span lang="EN-US" style="font-size:12.0pt;color:black">Luke Ireland <a href="mailto:Luke.Ireland@arm.com">
<Luke.Ireland@arm.com></a><br>
<b>Date: </b>Thursday, January 16, 2020 at 5:08 AM<br>
<b>To: </b>Stephen Scalpone <a href="mailto:sscalpone@nvidia.com"><sscalpone@nvidia.com></a><br>
<b>Cc: </b><a href="mailto:flang-dev@lists.llvm.org">"flang-dev@lists.llvm.org"</a>
<a href="mailto:flang-dev@lists.llvm.org"><flang-dev@lists.llvm.org></a><br>
<b>Subject: </b>Re: [flang-dev] Porting F18 tests to use LLVM lit</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
</div>
<table class="MsoNormalTable" border="1" cellpadding="0" style="background:#FFEB9C">
<tbody>
<tr>
<td style="padding:.75pt .75pt .75pt .75pt">
<p class="MsoNormal"><b><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:black">External email: Use caution opening links or attachments</span></b><span style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:black">
</span><o:p></o:p></p>
</td>
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</tbody>
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<p class="MsoNormal"><span lang="EN-US" style="color:white"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hi Stephen,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I don’t see any issue with choosing test names, I can confer if you like but the naming of the existing tests have never come into question before, so I doubt anyone would have any particular preferences. They’re in a
separate folder, so make sure the test name isn’t used in the existing tests, then I can’t imagine any problems arising.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">And yes, when all tests are successfully ported, ‘test’ will be removed, and ‘test-lit’ will be renamed to ‘test’ taking its place, and the appropriate changes needed to incorporate this into make check-all will be needed
as well, but should just be as simple as renaming again.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal"><span lang="EN-US" style="color:black">Thanks,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">Luke</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">Degree Apprentice,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="color:black">Arm Manchester </span>
<o:p></o:p></p>
</div>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span lang="EN-US" style="font-size:12.0pt;color:black">From:
</span></b><span lang="EN-US" style="font-size:12.0pt;color:black">Stephen Scalpone
<a href="mailto:sscalpone@nvidia.com"><sscalpone@nvidia.com></a><br>
<b>Date: </b>Wednesday, 15 January 2020 at 23:51<br>
<b>To: </b>Luke Ireland <a href="mailto:Luke.Ireland@arm.com"><Luke.Ireland@arm.com></a><br>
<b>Cc: </b><a href="mailto:flang-dev@lists.llvm.org">flang-dev@lists.llvm.org</a>
<a href="mailto:flang-dev@lists.llvm.org"><flang-dev@lists.llvm.org></a><br>
<b>Subject: </b>Re: [flang-dev] Porting F18 tests to use LLVM lit</span><o:p></o:p></p>
</div>
<p class="MsoNormal"><span lang="EN-US">Hi Luke,<br>
<br>
During the transition, when writing a lit test, are there any special guidelines beyond choosing a distinct test name?<br>
<br>
After the final step of removing old tests, will you rename the test-lit directory to test?<br>
<br>
Thanks for working on this!<br>
<br>
- Steve<br>
<br>
On 1/15/20, 10:59 AM, "flang-dev on behalf of Doerfert, Johannes via flang-dev" <a href="mailto:flang-dev-bounces@lists.llvm.orgonbehalfofflang-dev@lists.llvm.org">
<flang-dev-bounces@lists.llvm.org on behalf of flang-dev@lists.llvm.org></a> wrote:<br>
<br>
External email: Use caution opening links or attachments<br>
<br>
<br>
Thanks for working on this!<br>
<br>
On 01/15, Luke Ireland via flang-dev wrote:<br>
> Further to the conversation in llvm-dev<<a href="http://lists.llvm.org/pipermail/llvm-dev/2020-January/138282.html">http://lists.llvm.org/pipermail/llvm-dev/2020-January/138282.html</a>>, regarding LLVM testing infrastructure/lit, and the successfully
merged patch from Carol<<a href="https://github.com/flang-compiler/f18/pull/861/commits/1049aeb81e0195d3fa1050b21e93a3980a0b7245">https://github.com/flang-compiler/f18/pull/861/commits/1049aeb81e0195d3fa1050b21e93a3980a0b7245</a>>, we’re continuing development
on adding this infrastructure by porting the existing tests to be compatible with lit.<br>
><br>
> We’d like to propose the following approach:<br>
><br>
> 1. Start off with a new directory, “test-lit” containing lit tests<br>
> 2. make check-all will run this and the old test directory together<br>
> 3. port over all old tests to this new directory as lit tests<br>
> 4. Once all tests are successfully ported, the old directory and test scripts are removed, and “test-lit” becomes “test”.<br>
> 5. All new tests will be created to be compatible with lit.<br>
> During this transition phase, tests can either be written in the old style, and then ported with my script, or preferably, written to work with lit.<br>
<br>
This sounds very reasonable.<br>
<br>
> My PR has three patches:<br>
><br>
> 1. A script which ports old style tests to new lit tests. At the moment it only handles semantic error tests, i.e. tests run with check_error.sh<br>
> 2. The output of the porting script on a subset of the tests for verification. The subset of tests should cover all variations of error tests in my script<br>
> 3. All the remaining error tests from semantics ported to lit.<br>
<br>
Did you look at the llvm/utils/update_XXX_test_checks.py scripts? We<br>
might want to add a scripts there if we can generate, not port, the<br>
CHECK lines.<br>
<br>
Cheers,<br>
Johannes<br>
<br>
> My next steps:<br>
><br>
> 1. Port remaining semantic test types<br>
> * Symbol<br>
> * Generic<br>
> * Modfile<br>
> 2. Port decimal tests<br>
> 3. Port evaluate tests<br>
> 4. Port preprocessing tests (They aren’t in CMakeLists.txt, but are easily portable)<br>
> Each step will come as a pull request in a similar format:<br>
><br>
> 1. Script change to handle new test type<br>
> 2. Ported tests added<br>
> * Either in 2 commits (verified, remaining – likely for changes with a large number of tests)<br>
> * Or all in 1 commit (small number of tests)<br>
> 3. Old style tests removed<br>
> My initial PR is here<<a href="https://github.com/flang-compiler/f18/pull/934">https://github.com/flang-compiler/f18/pull/934</a>>.<br>
><br>
> Thanks,<br>
> Luke<br>
><br>
> Degree Apprentice,<br>
> Arm Manchester<br>
<br>
> _______________________________________________<br>
> flang-dev mailing list<br>
> <a href="mailto:flang-dev@lists.llvm.org">flang-dev@lists.llvm.org</a><br>
> <a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/flang-dev">https://lists.llvm.org/cgi-bin/mailman/listinfo/flang-dev</a><br>
<br>
<br>
--<br>
<br>
Johannes Doerfert<br>
Researcher<br>
<br>
Argonne National Laboratory<br>
Lemont, IL 60439, USA<br>
<br>
<a href="mailto:jdoerfert@anl.gov">jdoerfert@anl.gov</a><br>
<br>
<br>
<br>
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<pre><span lang="EN-US">_______________________________________________</span><o:p></o:p></pre>
<pre><span lang="EN-US">flang-dev mailing list</span><o:p></o:p></pre>
<pre><span lang="EN-US"><a href="mailto:flang-dev@lists.llvm.org">flang-dev@lists.llvm.org</a></span><o:p></o:p></pre>
<pre><span lang="EN-US"><a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/flang-dev">https://lists.llvm.org/cgi-bin/mailman/listinfo/flang-dev</a></span><o:p></o:p></pre>
</blockquote>
<pre><span lang="EN-US">-- </span><o:p></o:p></pre>
<pre><span lang="EN-US">Hal Finkel</span><o:p></o:p></pre>
<pre><span lang="EN-US">Lead, Compiler Technology and Programming Languages</span><o:p></o:p></pre>
<pre><span lang="EN-US">Leadership Computing Facility</span><o:p></o:p></pre>
<pre><span lang="EN-US">Argonne National Laboratory</span><o:p></o:p></pre>
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