[PATCH] D63972: [PowerPC] Do the Early Return for the li and unconditional branch

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> The line 29 b .LBB0_10 is created after running the pass branch-folder,

I did a quick test with -print-after-all, and it looks like it's actually created by MachineBlockPlacement?

If we're going to do this transform, we should use the existing TailDup code to do it, not reimplement it in PPCEarlyReturn.  Would it make sense to run a re-run the entire tail duplication pass after block placement?  Or should we try to do something more targeted?


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  https://reviews.llvm.org/D63972/new/

https://reviews.llvm.org/D63972