"H.J. Lu" <hjl.to...@gmail.com> writes: > We can simplify > > (subreg (vec_merge (vec_duplicate X) > (vector) > (const_int ((1 << N) | M))) > (N * sizeof (X))) > > to X when mode of X is the same as of mode of subreg. > > gcc/ > > PR target/87537 > * simplify-rtx.c (simplify_subreg): Simplify subreg of vec_merge > of vec_duplicate. > (test_vector_ops_duplicate): Add test for a scalar subreg of a > VEC_MERGE of a VEC_DUPLICATE. > > gcc/testsuite/ > > PR target/87537 > * gcc.target/i386/pr87537-1.c: New test.
OK, thanks. Richard
