[llvm] 4553821 - [SelectionDAG] Prevent scalable vector warning from ComputeNumSignBits on extract_vector_elt on a scalable vector.
Craig Topper via llvm-commits
llvm-commits at lists.llvm.org
Mon Feb 1 23:42:45 PST 2021
Author: Craig Topper
Date: 2021-02-01T23:42:03-08:00
New Revision: 4553821815ebe3101dd7c8514a5a2b45891b29a6
URL: https://github.com/llvm/llvm-project/commit/4553821815ebe3101dd7c8514a5a2b45891b29a6
DIFF: https://github.com/llvm/llvm-project/commit/4553821815ebe3101dd7c8514a5a2b45891b29a6.diff
LOG: [SelectionDAG] Prevent scalable vector warning from ComputeNumSignBits on extract_vector_elt on a scalable vector.
Added:
Modified:
llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
Removed:
################################################################################
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 2090762e2ff4..c9bb50cb5c8b 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3922,6 +3922,9 @@ unsigned SelectionDAG::ComputeNumSignBits(SDValue Op, const APInt &DemandedElts,
SDValue InVec = Op.getOperand(0);
SDValue EltNo = Op.getOperand(1);
EVT VecVT = InVec.getValueType();
+ // ComputeNumSignBits not yet implemented for scalable vectors.
+ if (VecVT.isScalableVector())
+ break;
const unsigned BitWidth = Op.getValueSizeInBits();
const unsigned EltBitWidth = Op.getOperand(0).getScalarValueSizeInBits();
const unsigned NumSrcElts = VecVT.getVectorNumElements();
More information about the llvm-commits
mailing list