<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">A trivial main function doesn't really seem deserving of a regression test. I should really set up a PBQP tester. I'm going to look into PR14027 (</span><a href="http://llvm.org/bugs/show_bug.cgi?id=14027" target="_blank" style="color:rgb(17,85,204);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">http://llvm.org/bugs/show_bug.cgi?id=14027</a><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">) first though.</span><br>
<br>- Lang.<div><br><div class="gmail_quote">On Thu, Oct 4, 2012 at 12:07 AM, David Blaikie <span dir="ltr"><<a href="mailto:dblaikie@gmail.com" target="_blank">dblaikie@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On Wed, Oct 3, 2012 at 9:50 PM, Lang Hames <<a href="mailto:lhames@gmail.com">lhames@gmail.com</a>> wrote:<br>
> Author: lhames<br>
> Date: Wed Oct  3 23:50:53 2012<br>
> New Revision: 165201<br>
><br>
> URL: <a href="http://llvm.org/viewvc/llvm-project?rev=165201&view=rev" target="_blank">http://llvm.org/viewvc/llvm-project?rev=165201&view=rev</a><br>
> Log:<br>
> Fix reg mask slot test, and preserve LiveIntervals and VirtRegMap in the PBQP<br>
> allocator. Fixes PR13945.<br>
<br>
</div>Test case?<br>
<div class="HOEnZb"><div class="h5"><br>
><br>
> Modified:<br>
>     llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp<br>
><br>
> Modified: llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp<br>
> URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp?rev=165201&r1=165200&r2=165201&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp?rev=165201&r1=165200&r2=165201&view=diff</a><br>

> ==============================================================================<br>
> --- llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp (original)<br>
> +++ llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp Wed Oct  3 23:50:53 2012<br>
> @@ -231,7 +231,7 @@<br>
>          continue;<br>
><br>
>        // vregLI crosses a regmask operand that clobbers preg.<br>
> -      if (!regMaskOverlaps.empty() && !regMaskOverlaps.test(preg))<br>
> +      if (!regMaskOverlaps.empty() && regMaskOverlaps.test(preg))<br>
>          continue;<br>
><br>
>        // vregLI overlaps fixed regunit interference.<br>
> @@ -432,6 +432,7 @@<br>
>    au.addRequired<SlotIndexes>();<br>
>    au.addPreserved<SlotIndexes>();<br>
>    au.addRequired<LiveIntervals>();<br>
> +  au.addPreserved<LiveIntervals>();<br>
>    //au.addRequiredID(SplitCriticalEdgesID);<br>
>    if (customPassID)<br>
>      au.addRequiredID(*customPassID);<br>
> @@ -443,6 +444,7 @@<br>
>    au.addRequired<MachineLoopInfo>();<br>
>    au.addPreserved<MachineLoopInfo>();<br>
>    au.addRequired<VirtRegMap>();<br>
> +  au.addPreserved<VirtRegMap>();<br>
>    MachineFunctionPass::getAnalysisUsage(au);<br>
>  }<br>
><br>
><br>
><br>
> _______________________________________________<br>
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</div></div></blockquote></div><br></div>