From a6319e5f83718e925870e5c758e40228b4eb4b33 Mon Sep 17 00:00:00 2001 From: Simon Pilgrim Date: Wed, 26 Jun 2019 11:17:38 +0000 Subject: [DAGCombine] visitEXTRACT_SUBVECTOR - add TODO for extract_subvector(bitcast()) support We support 'big to little' (e.g. extract_subvector(v16i8 bitcast(v2i64))) but not 'little to big' cases (e.g. extract_subvector(v2i64 bitcast(v16i8))) llvm-svn: 364405 --- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 1 + 1 file changed, 1 insertion(+) (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp') diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 3b480377dfc..54a52690012 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -18132,6 +18132,7 @@ SDValue DAGCombiner::visitEXTRACT_SUBVECTOR(SDNode *N) { return DAG.getBitcast(NVT, NewExtract); } } + // TODO - handle (DestNumElts % SrcNumElts) == 0 } // Combine: -- cgit v1.2.3