diff options
Diffstat (limited to 'gcc/stmt.c')
| -rwxr-xr-x | gcc/stmt.c | 75 |
1 files changed, 0 insertions, 75 deletions
@@ -2472,17 +2472,6 @@ expand_null_return_1 (last_insn, use_goto) return; } - /* Otherwise output a simple return-insn if one is available, - unless it won't do the job. */ -#ifdef HAVE_return - if (HAVE_return && use_goto == 0 && cleanup_label == 0) - { - emit_jump_insn (gen_return ()); - emit_barrier (); - return; - } -#endif - /* Otherwise jump to the epilogue. */ expand_goto_internal (NULL_TREE, end_label, last_insn); } @@ -2578,70 +2567,6 @@ expand_return (retval) if (optimize_tail_recursion (retval_rhs, last_insn)) return; -#ifdef HAVE_return - /* This optimization is safe if there are local cleanups - because expand_null_return takes care of them. - ??? I think it should also be safe when there is a cleanup label, - because expand_null_return takes care of them, too. - Any reason why not? */ - if (HAVE_return && cleanup_label == 0 - && ! current_function_returns_pcc_struct - && BRANCH_COST <= 1) - { - /* If this is return x == y; then generate - if (x == y) return 1; else return 0; - if we can do it with explicit return insns and branches are cheap, - but not if we have the corresponding scc insn. */ - int has_scc = 0; - if (retval_rhs) - switch (TREE_CODE (retval_rhs)) - { - case EQ_EXPR: -#ifdef HAVE_seq - has_scc = HAVE_seq; -#endif - case NE_EXPR: -#ifdef HAVE_sne - has_scc = HAVE_sne; -#endif - case GT_EXPR: -#ifdef HAVE_sgt - has_scc = HAVE_sgt; -#endif - case GE_EXPR: -#ifdef HAVE_sge - has_scc = HAVE_sge; -#endif - case LT_EXPR: -#ifdef HAVE_slt - has_scc = HAVE_slt; -#endif - case LE_EXPR: -#ifdef HAVE_sle - has_scc = HAVE_sle; -#endif - case TRUTH_ANDIF_EXPR: - case TRUTH_ORIF_EXPR: - case TRUTH_AND_EXPR: - case TRUTH_OR_EXPR: - case TRUTH_NOT_EXPR: - case TRUTH_XOR_EXPR: - if (! has_scc) - { - op0 = gen_label_rtx (); - jumpifnot (retval_rhs, op0); - expand_value_return (const1_rtx); - emit_label (op0); - expand_value_return (const0_rtx); - return; - } - break; - - default: - break; - } - } -#endif /* HAVE_return */ /* If the result is an aggregate that is being returned in one (or more) registers, load the registers here. The compiler currently can't handle |