[PATCH] D41794: [X86] Improve AVX1 shuffle lowering for v8f32 shuffles where the low half comes from V1 and the high half comes from V2 and the halves do the same operation

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: lib/Target/X86/X86ISelLowering.cpp:13232
+    SmallVector<int, 8> RepeatedShuffleMask;
+    if (is128BitLaneRepeatedShuffleMask(VT, Mask, RepeatedShuffleMask))
+      return SDValue();
----------------
There is a is128BitLaneRepeatedShuffleMask(VT, Mask) version that you can use instead


https://reviews.llvm.org/D41794