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<p class="MsoNormal">Also CCing Xun, who’s done a bunch of coroutines work.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">cfe-dev <cfe-dev-bounces@lists.llvm.org> on behalf of cfe-dev <cfe-dev@lists.llvm.org><br>
<b>Reply-To: </b>Mehdi AMINI <joker.eph@gmail.com><br>
<b>Date: </b>Thursday, July 8, 2021 at 4:16 PM<br>
<b>To: </b>David Blaikie <dblaikie@gmail.com>, "lxfind@gmail.com" <lxfind@gmail.com>, John McCall <rjmccall@apple.com>, Arthur Eubanks <aeubanks@google.com>, "yedeng.yd@linux.alibaba.com" <yedeng.yd@linux.alibaba.com><br>
<b>Cc: </b>cfe-dev <cfe-dev@lists.llvm.org><br>
<b>Subject: </b>Re: [cfe-dev] Compile .ll file with coroutines intrinsics<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in">On Thu, Jul 8, 2021 at 3:55 PM David Blaikie <<a href="mailto:dblaikie@gmail.com" target="_blank">dblaikie@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Guessing you might need to cc/to this to some folks who worked on/implemented the features - lots of folks don't read the -dev lists terribly much these days, unfortunately.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Good suggestion, adding a few folks here.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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My guess would be: It's difficult because we've essentially fragmented the IR and now we have before-coroutines-are-lowered IR and after-coroutines-are-lowered IR and no way to tell the difference & I guess the support for IR inputs in clang is currently (probably
by accident) only supporting after-coroutines-are-lowered.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Right: but can you feed the IR post-lowering and reprocess it through the coroutine lowering passes? I would expect this to be idempotent somehow.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Even if it isn't the case, I assume that adding support for the -fcoroutines-ts option when processing IR files should be fine: the IR post-lowering can just not use the flag.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Thanks,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">-- <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Mehdi<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"> <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">On Thu, Jul 8, 2021 at 3:23 PM Mehdi AMINI via cfe-dev <<a href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">On Fri, Jul 2, 2021 at 10:25 PM Mehdi AMINI <<a href="mailto:joker.eph@gmail.com" target="_blank">joker.eph@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Hi all,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I'm trying to figure out how to use clang to compile some piece of IR in a .ll generated with coroutines.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I tried to use the `-fcoroutines-ts`, but it isn't even forwarded by the driver to CC1. And even if I use -Xclang to forward it manually it is then ignored because LLVM IR input is shortcut by CompilerInvocation::ParseLangArgs. <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">What's the best way here? I could add support in CompilerInvocation::ParseLangArgs:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">@@ -3547,6 +3546,9 @@ bool CompilerInvocation::ParseLangArgs(L<br>
parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),<br>
Diags, Opts.Sanitize);<br>
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+ // Allows to use -fcoroutine-ts with IR input.<br>
+ Opts.Coroutines = Args.hasArg(OPT_fcoroutines_ts);<br>
+<br>
return Diags.getNumErrors() == NumErrorsBefore;<br>
}<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">But I still need to figure out how to have the driver propagate the option to cc1, any pointer?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Is it expected to silently discard it here by the way? It is quite surprising to me).<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Ping on these questions? Anyone want to chime in?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Cheers,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">-- <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">Mehdi <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">_______________________________________________<br>
cfe-dev mailing list<br>
<a href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a><br>
<a href="https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev" target="_blank">https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev</a><o:p></o:p></p>
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