[X86][AVX] combineInsertSubvector - remove concat_vectors(load(x),load(x)) --> sub_vbroadcast(x)
D58053/rL354340 added this to EltsFromConsecutiveLoads directly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354732 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 1db9f12..c5824b3 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -41949,11 +41949,6 @@
return Ld;
}
}
- // If lower/upper loads are the same and there's no other use of the lower
- // load, then splat the loaded value with a broadcast.
- if (auto *Ld = dyn_cast<LoadSDNode>(peekThroughOneUseBitcasts(SubVec2)))
- if (SubVec2 == SubVec && ISD::isNormalLoad(Ld) && Vec.hasOneUse())
- return DAG.getNode(X86ISD::SUBV_BROADCAST, dl, OpVT, SubVec);
// If this broadcast/subv_broadcast is inserted into both halves, use a
// larger broadcast/subv_broadcast.