[PATCH] D89855: [PowerPC] Extend folding RLWINM + RLWINM to post-RA.

[Qing Shan Zhang via Phabricator via llvm-commits]

steven.zhang accepted this revision.
steven.zhang added a comment.
This revision is now accepted and ready to land.

LGTM overall with one minor comment.



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Comment at: llvm/lib/Target/PowerPC/PPCInstrInfo.cpp:3355
+    // its flag is "killed", it's safe to delete SrcMI. Otherwise keep it.
+    if ((!MRI->isSSA() && NoUse) ||
+        (MRI->isSSA() && MRI->use_nodbg_empty(FoldingReg))) {
----------------
Can we set the NoUse for pre-ra also，so that just check the NoUse here？


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