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<p class="MsoNormal">Slightly off-topic, but out of curiosity, what's the PE/COFF mechanism you're intending to use? The standard one I've seen is grouped sections, i.e. you have section$A containing your start symbol, section$C containing your end symbol,
and then everything in between is placed in section$B, so the linker ensures it's sorted between the start and end symbols. The start and end symbols I've seen have always been sized the same as the other list entries, though I suppose you could make them
zero-sized.<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">llvm-dev <llvm-dev-bounces@lists.llvm.org> on behalf of David Chisnall via llvm-dev <llvm-dev@lists.llvm.org><br>
<b>Reply-To: </b>David Chisnall <David.Chisnall@cl.cam.ac.uk><br>
<b>Date: </b>Tuesday, July 17, 2018 at 4:40 AM<br>
<b>To: </b>Bruce Hoult <brucehoult@sifive.com><br>
<b>Cc: </b>Zhang via llvm-dev <llvm-dev@lists.llvm.org><br>
<b>Subject: </b>Re: [llvm-dev] Zero-sized globals in LLVM IR<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in">On 17 Jul 2018, at 12:16, Bruce Hoult <<a href="mailto:brucehoult@sifive.com">brucehoult@sifive.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I believe C says you can't have one. Every variable must have a distinct address. I don't know what LLVM IR says, but you could maybe insert an asm label.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">I’m aware that C doesn’t permit this, but LLVM is intended to be a portable abstraction between source languages and target binary formats, and all supported object file formats do support it. In PE/COFF, this
is the standard way of implementing the equivalent of the GNU linker’s __start_ magic symbols, for example.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">David<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">LLVM Developers mailing list<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.llvm.org_cgi-2Dbin_mailman_listinfo_llvm-2Ddev&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=RBavGtGNBKmv_trYlHW3VPB9vevIiq_Q_dMupLo7XRE&s=kOF1vsEr6JcXmC8KspVXaqufKeqxaiHrJfwTkY8XvR8&e=">https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.llvm.org_cgi-2Dbin_mailman_listinfo_llvm-2Ddev&d=DwIGaQ&c=5VD0RTtNlTh3ycd41b3MUw&r=o3kDXzdBUE3ljQXKeTWOMw&m=RBavGtGNBKmv_trYlHW3VPB9vevIiq_Q_dMupLo7XRE&s=kOF1vsEr6JcXmC8KspVXaqufKeqxaiHrJfwTkY8XvR8&e=</a><o:p></o:p></p>
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