diff options
Diffstat (limited to 'erts/emulator/beam/beam_load.c')
| -rw-r--r-- | erts/emulator/beam/beam_load.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c index c6c35e74c9..5d03c98657 100644 --- a/erts/emulator/beam/beam_load.c +++ b/erts/emulator/beam/beam_load.c @@ -2030,14 +2030,14 @@ load_code(LoaderState* stp) do_transform: ASSERT(stp->genop != NULL); if (gen_opc[stp->genop->op].transform != -1) { - int need; - tmp_op = stp->genop; - - for (need = gen_opc[stp->genop->op].min_window-1; need > 0; need--) { - if (tmp_op == NULL) { - goto get_next_instr; - } - tmp_op = tmp_op->next; + if (stp->genop->next == NULL) { + /* + * Simple heuristic: Most transformations requires + * at least two instructions, so make sure that + * there are. That will reduce the number of + * TE_SHORT_WINDOWs. + */ + goto get_next_instr; } switch (transform_engine(stp)) { case TE_FAIL: |