Author: Peter Waller Date: 2022-08-16T08:29:55+02:00 New Revision: ddb04d7968715165363bfb3280c158865bee113d
URL: https://github.com/llvm/llvm-project/commit/ddb04d7968715165363bfb3280c158865bee113d DIFF: https://github.com/llvm/llvm-project/commit/ddb04d7968715165363bfb3280c158865bee113d.diff LOG: [DAGCombine] Check zext legality in zext-extract-extend combine Discussed in D131503. Fix to D130782. (cherry picked from commit 898699831b5490d88b993593e5cb415fb2d1983a) Added: Modified: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Removed: ################################################################################ diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 8d465b9520de0..74ee0bdfbf421 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -6360,7 +6360,8 @@ SDValue DAGCombiner::visitAND(SDNode *N) { SDValue Extendee = Ext->getOperand(0); unsigned ScalarWidth = Extendee.getValueType().getScalarSizeInBits(); - if (N1C->getAPIntValue().isMask(ScalarWidth)) { + if (N1C->getAPIntValue().isMask(ScalarWidth) && + (!LegalOperations || TLI.isOperationLegal(ISD::ZERO_EXTEND, ExtVT))) { // (and (extract_subvector (zext|anyext|sext v) _) iN_mask) // => (extract_subvector (iN_zeroext v)) SDValue ZeroExtExtendee = _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
