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Ping!</div>
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I would like to check whether we can map multiple MVTs with different size to one register class as below.</div>
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<span>def TestReg : RegisterClass<"Test", [v32i16, v32i32], ...> <br>
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<div>The register classes could be used as below.</div>
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<div>def : Pat<(v32i16 (add TestRegs:$src0, TestRegs:$src1)),<br>
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<div> (vaddv32i16 $src0, $src1)>;<br>
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<div>def : Pat<(v32i32 (add TestRegs:$src0, TestRegs:$src1)),<br>
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<span> (vaddv32i32 $src0, $src1)>;</span><br>
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Is it possible to implement above register class and pattern? I could create different register class per each MVT with different size... but it is not preferred internally... If anyone has information about above one, please share it.</div>
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Thanks</div>
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<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
JinGu Kang</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> JinGu Kang<br>
<b>Sent:</b> 18 July 2019 15:03<br>
<b>To:</b> llvm-dev@lists.llvm.org <llvm-dev@lists.llvm.org><br>
<b>Subject:</b> Question about TableGen RegisterClass definition</font>
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Hi All,</div>
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I have a question about TableGen RegisterClass definition.</div>
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I need to map different size of MVTs into a register class as below.</div>
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def TestReg : RegisterClass<"Test", [v8i32, v4i32], ...></div>
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When I look at TableGen and CodeGen, it looks the types are used as following:</div>
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1. MCRegisterClass's RegSize and Alignment</div>
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2. <span style="font-family:Calibri,Arial,Helvetica,sans-serif; background-color:rgb(255,255,255); display:inline!important">SpillSize in TableGen</span></div>
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3. Type constraint for instruction pattern matching</div>
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>From my opinion, it seems it is possible to do it... but I am not 100% sure... If anyone has information about it, please give me comment.</div>
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Thanks </div>
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<div style="margin:0px; padding:0px; color:rgb(23,43,77); font-size:14px"><b>JinGu Kang</b></div>
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