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Diffstat (limited to 'gcc/tree-vect-generic.cc')
| -rw-r--r-- | gcc/tree-vect-generic.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc index 5814a71..f4fc7d1 100644 --- a/gcc/tree-vect-generic.cc +++ b/gcc/tree-vect-generic.cc @@ -317,7 +317,10 @@ expand_vector_piecewise (gimple_stmt_iterator *gsi, elem_op_func f, int i; location_t loc = gimple_location (gsi_stmt (*gsi)); - if (ret_type || !parallel_p) + if (nunits == 1) + /* Do not diagnose decomposing single element vectors. */ + ; + else if (ret_type || !parallel_p) warning_at (loc, OPT_Wvector_operation_performance, "vector operation will be expanded piecewise"); else |