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Diffstat (limited to 'gcc/tree-vect-generic.c')
| -rw-r--r-- | gcc/tree-vect-generic.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c index 27d03a7..a9a6640 100644 --- a/gcc/tree-vect-generic.c +++ b/gcc/tree-vect-generic.c @@ -1337,18 +1337,19 @@ lower_vec_perm (gimple_stmt_iterator *gsi) != CODE_FOR_nothing && TREE_CODE (vec1) == VECTOR_CST && initializer_zerop (vec1) - && indices[0] - && indices[0] < elements) + && maybe_ne (indices[0], 0) + && known_lt (indices[0], elements)) { bool ok_p = indices.series_p (0, 1, indices[0], 1); if (!ok_p) { for (i = 1; i < elements; ++i) { - unsigned int expected = i + indices[0]; + poly_int64 expected = i + indices[0]; /* Indices into the second vector are all equivalent. */ - if (MIN (elements, (unsigned) indices[i]) - != MIN (elements, expected)) + if (maybe_lt (indices[i], elements) + ? maybe_ne (indices[i], expected) + : maybe_lt (expected, elements)) break; } ok_p = i == elements; |