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...us the need for physregs. I asked about adding new inputs & outputs to basic blocks during instruction legalization/selection earlier on:</div> <div dir="ltr" > </div> <div dir="ltr" ><a href="http://lists.llvm.org/pipermail/llvm-dev/2016-June/100387.html" >http://lists.llvm.org/pipermail/llvm-dev/2016-June/100387.html</a></div> <div dir="ltr" > </div> <div dir="ltr" >Tim Northover responded with some useful insight but I did not really get a direct answer to my question on how to add MB...

<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial;font-size:10.5pt" ><div class="socmaildefaultfont" dir="ltr" style="font-family:Arial;font-size:10.5pt" ><div dir="ltr" > </div> <div dir="ltr" >Hi all,</div> <div dir="ltr" > </div> <div

...ic blocks. I was unable to find a way to add a virt reg as a live-in to an MBB, thus the need for physregs. I asked about adding new inputs & outputs to basic blocks during instruction legalization/selection earlier on: http://lists.llvm.org/pipermail/llvm-dev/2016-June/100387.html Tim Northover responded with some useful insight but I did not really get a direct answer to my question on how to add MBB inputs (or if it's possible). The solution that I developed myself is to use virtual registers within MBBs and build CopyFrom/ToReg nodes at t...