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Craig was correct. The problem was that one of my<i> target specific ISD opcodes wasn't handled</i><i>in my *TargetLowering::getTargetNodeName method.</i><br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Josh Sharp<br>
<b>Sent:</b> Saturday, March 2, 2019 11:45 AM<br>
<b>To:</b> via llvm-dev<br>
<b>Subject:</b> Unknown Target Node</font>
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Hi,</div>
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I'm having an error I've never seen before</div>
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<span>LLVM ERROR: Cannot select: t20: ch,glue = <<Unknown Target Node #284>> t11, TargetGlobalAddress:i32<i32 (i32, i32)* @add2> 0, Register:i32 $r4, Register:i32 $r5, RegisterMask:Untyped, t18:1<br>
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The IR is <br>
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<span>define i32 @add2(i32 %a, i32 %b) {<br>
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<div>entry:<br>
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<div> %tmp1 = icmp eq i32 %a, 0<br>
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<div> br i1 %tmp1, label %done, label %recurse<br>
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<div>recurse:<br>
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<div> %tmp2 = sub i32 %a, 1<br>
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<div> %tmp3 = add i32 %b, 1<br>
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<div> %tmp4 = call i32 @add2(i32 %tmp2, i32 %tmp3)<br>
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<div> ret i32 %tmp4<br>
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<div>done:<br>
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<div> ret i32 %b<br>
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<span>}</span></div>
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I don't know what the error means but it goes away if I remove the line "%tmp4 = call i32 @add2(i32 %tmp2, i32 %tmp3)"</div>
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Any help would be appreciated.<br>
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