<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 18, 2016 at 10:50 AM, Krzysztof Parzyszek via llvm-dev <span dir="ltr"><<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 2/18/2016 12:43 PM, Rail Shafigulin via llvm-dev wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
LLVM ERROR: Cannot select: 0x3284268: glue = EsenciaISD::SET_FLAG<br>
0x3283608, 0x3283710, 0x3283e48 [ORD=3] [ID=11]<br>
0x3283608: i32,ch = CopyFromReg 0x3257980, 0x3283500 [ORD=1] [ID=9]<br>
0x3283500: i32 = Register %vreg5 [ID=1]<br>
0x3283710: i32 = Constant<3> [ID=2]<br>
0x3283e48: i32 = Constant<20> [ID=8]<br>
In function: fib<br>
<br>
As far as I can understand LLVM cannot select it because the pattern is<br>
not specified. Unfortunately for me, I can't understand how to interpret<br>
this output. Would anybody be able to help me out?<br>
</blockquote>
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<br></span>
The DAG node that has failed selection is "SET_FLAG %vreg5, 3, 20", the type of the node is "glue" and all 3 arguments are i32.<br></blockquote><div> </div><div>I understand where SET_FLAG, 3 and 20 come from, but how did you arrive the conclusion that %vreg5 should be part of the pattern?</div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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The top line shows the node that caused the failure. The hex numbers on that line are the addresses of the arguments. These arguments are then listed below.<br>
<br>
Newer versions of LLVM show node ids instead of addresses, but AFAIK it was dependent on some configuration option.<span class="HOEnZb"><font color="#888888"><br>
<br>
-Krzysztof<br>
<br>
<br>
-- <br>
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation<br>
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</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Rail Shafigulin<br></div>Software Engineer <br>Esencia Technologies<br></div></div></div></div>
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