[PATCH] D97658: [PowerPC] Reduce symmetrical swaps for lane-insensitive vector ops

[Qiu Chaofan via Phabricator via llvm-commits]

qiucf marked an inline comment as done.
qiucf added inline comments.


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Comment at: llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp:6789
+  // Our desired xxswap might be source of COPY_TO_REGCLASS.
+  auto SkipRCCopy = [](SDValue V) {
+    while (V->isMachineOpcode() &&
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nemanjai wrote:
> Is there not an equivalent of `lookThruCopyLike()` for SDAG?
I did not see such method in DAG level yet. Will leave a TODO here in case we need it again in the future.


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https://reviews.llvm.org/D97658