[PATCH] D62498: [x86] split 256-bit store of concatenated vectors

[Sanjay Patel via Phabricator via llvm-commits]

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


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Comment at: llvm/lib/Target/X86/X86ISelLowering.cpp:21088
+  if (StoreVT.is256BitVector()) {
+    if (StoredVal.getOpcode() != ISD::CONCAT_VECTORS || !StoredVal.hasOneUse())
+      return SDValue();
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RKSimon wrote:
> Not sure if its any use but I created the collectConcatOps helper to do something similar
I'm not sure if the insert_subvector pattern appears here, but it's definitely worth a look. I'll push this as-is to make sure it doesn't break anything, then look at using collectConcatOps as an improvement.


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  https://reviews.llvm.org/D62498/new/

https://reviews.llvm.org/D62498