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Fix Warray-bounds warning for fixed-size assignments

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This commit is contained in:
Charles Schlosser
2025-02-18 19:23:14 +00:00
committed by Rasmus Munk Larsen
parent 1d8b82b074
commit 151f6127df
3 changed files with 44 additions and 16 deletions
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18
test/vectorization_logic.cpp
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@@ -251,6 +251,24 @@ struct vectorization_logic {
(Matrix1::Flags & RowMajorBit) ? PacketSize : 2 > (1, 2), DefaultTraversal, CompleteUnrolling));
}
// the actual packet type used by the assignment evaluator is not necessarily PacketType for small fixed-size arrays
if (internal::unpacket_traits<typename internal::find_best_packet<Scalar, 2>::type>::size > 2) {
// the expression should not be vectorized if the size is too small
using Vector2 = Matrix<Scalar, 2, 1, ColMajor>;
using VectorMax3 = Matrix<Scalar, Dynamic, 1, ColMajor, 3, 1>;
VERIFY(test_assign(Vector2(), Vector2(), LinearTraversal, InnerUnrolling + CompleteUnrolling));
VERIFY(test_assign(VectorMax3(), Vector2(), LinearTraversal, InnerUnrolling + CompleteUnrolling));
VERIFY(test_assign(Vector2(), VectorMax3(), LinearTraversal, InnerUnrolling + CompleteUnrolling));
VERIFY(test_assign(VectorMax3(), VectorMax3(), LinearTraversal, NoUnrolling));
}
if (PacketSize > 1 && PacketSize < 8) {
// the size of the expression should be deduced at compile time by considering both the lhs and rhs
using Lhs = Matrix<Scalar, 7, Dynamic, ColMajor>;
using Rhs = Matrix<Scalar, Dynamic, 7, ColMajor>;
VERIFY(test_assign(Lhs(), Rhs(), -1, InnerUnrolling + CompleteUnrolling));
}
VERIFY(
test_redux(Matrix44c().template block<2 * PacketSize, 1>(1, 2), LinearVectorizedTraversal, CompleteUnrolling));