diff options
| -rw-r--r-- | parse.c | 16 |
1 files changed, 14 insertions, 2 deletions
@@ -1604,8 +1604,20 @@ static struct expr *parse_clause(struct parser_state *state) { * Create a "comma" expression. */ static struct expr *new_comma_expr(const struct parser_state *state, struct expr *lhs, struct expr *rhs, char **argv) { - if (state->cmdline->optlevel >= 2) { - if (lhs->pure) { + int optlevel = state->cmdline->optlevel; + if (optlevel >= 1) { + if (lhs->eval == eval_not) { + debug_opt(state, "-O1: ignored result: (%s %e %e) <==> (%s %e %e)\n", + argv[0], lhs, rhs, + argv[0], lhs->rhs, rhs); + + struct expr *old = lhs; + lhs = old->rhs; + old->rhs = NULL; + free_expr(old); + } + + if (optlevel >= 2 && lhs->pure) { debug_opt(state, "-O2: purity: (%s %e %e) <==> %e\n", argv[0], lhs, rhs, rhs); free_expr(lhs); return rhs; |