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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-02-23 18:53:03 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2019-02-23 18:53:03 +0000 |
| commit | f383a47b7db24b6eeceeecfd4baed12efd138710 (patch) | |
| tree | 4f18376910c6e6fa6f2e48c2d8fe8f5b88666f0c /llvm/lib/Target/X86/X86ISelLowering.cpp | |
| parent | 398d0b9e96ab46b5327557455eecde3a33764237 (diff) | |
| download | bcm5719-llvm-f383a47b7db24b6eeceeecfd4baed12efd138710.tar.gz bcm5719-llvm-f383a47b7db24b6eeceeecfd4baed12efd138710.zip | |
[X86][AVX] combineInsertSubvector - remove concat_vectors(load(x),load(x)) --> sub_vbroadcast(x)
D58053/rL354340 added this to EltsFromConsecutiveLoads directly
llvm-svn: 354732
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 1db9f1274d0..c5824b366cd 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -41949,11 +41949,6 @@ static SDValue combineInsertSubvector(SDNode *N, SelectionDAG &DAG, 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. |
