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I'm assuming that you're asking this in the context of GC? Are you
doing conservative stack scanning?<br>
<br>
One way you could address this would be to place a gc.statepoint
immediately before the return with the value you need held live
mentioned. This would also give you a precise stackmap at that
location (for the variables explicitly listed). <br>
<br>
Philip<br>
<br>
<div class="moz-cite-prefix">On 02/17/2015 12:46 PM, Andy Ayers
wrote:<br>
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<p class="MsoNormal">In other compilers I’ve worked on there
were special pseudo instructions (or similar mechanisms like
adding extra source operands to returns) that allowed you to
artificially extend lifetimes of values. For instance we might
have a requirement that a certain local (say the ‘this
pointer’) remain live throughout the method.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there anything like this in LLVM?<o:p></o:p></p>
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