Changes in directory llvm/lib/CodeGen/SelectionDAG:
DAGCombiner.cpp updated: 1.156 -> 1.157 --- Log message: Fold (fpext (load x)) -> (extload x) --- Diffs of the changes: (+14 -0) DAGCombiner.cpp | 14 ++++++++++++++ 1 files changed, 14 insertions(+) Index: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp diff -u llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.156 llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.157 --- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:1.156 Fri May 5 01:32:04 2006 +++ llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Fri May 5 16:34:35 2006 @@ -2413,6 +2413,20 @@ // fold (fp_extend c1fp) -> c1fp if (N0CFP) return DAG.getNode(ISD::FP_EXTEND, VT, N0); + + // fold (fpext (load x)) -> (fpext (fpround (extload x))) + if (N0.getOpcode() == ISD::LOAD && N0.hasOneUse() && + (!AfterLegalize||TLI.isOperationLegal(ISD::EXTLOAD, N0.getValueType()))) { + SDOperand ExtLoad = DAG.getExtLoad(ISD::EXTLOAD, VT, N0.getOperand(0), + N0.getOperand(1), N0.getOperand(2), + N0.getValueType()); + CombineTo(N, ExtLoad); + CombineTo(N0.Val, DAG.getNode(ISD::FP_ROUND, N0.getValueType(), ExtLoad), + ExtLoad.getValue(1)); + return SDOperand(N, 0); // Return N so it doesn't get rechecked! + } + + return SDOperand(); } _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits