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<p class="MsoNormal"><a name="_MailEndCompose"><span lang="EN-US">Hello Teresa,<o:p></o:p></span></a></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">> Without -flto, a.o ends up with a reference to __exp_finite,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">That’s correct.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">> which also would not be satifisfied out of libexp.a.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">That’s not correct. Even if libexp.a would have __exp_finite, it wouldn’t be resolved from libexp.a, because of the behavior described in my first message.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">> Do you also have an implementation of __exp_finite in your libexp.a?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">No, I don’t have __exp_finite in libexp.a. I presented complete code in my first message. You can reproduce it yourself on current trunk.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">> Can you build with -fno-builtin, or -fno-builtin-exp etc?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">> That results in a reference to __exp_finite in the .o bitcode
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">> (which of course has the same issue I mentioned above, but is consistent).
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">> That seems to be the option you should use here when you want to use your own implementations.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Yes, -fno-builtin results in call to __exp_finite in the bitcode. But the problem I try to address is not what version of exp libcall we want to generate: exp or __exp_finite.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The problem is that if the exp call was lowered to llvm intrinsic, linker doesn’t resolve it from my static library in LTO build, because plugin (LLVMgold.so) doesn’t report those symbols (yet in intrinsic form) to the
linker. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Best regards,<br>
Denis Bakhvalov.</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
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