diff options
| author | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-12-17 17:10:34 +0000 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-12-17 17:10:34 +0000 |
| commit | 8ecba28a999a6c9d277fba937943c8b7f1e0fb4b (patch) | |
| tree | b310f6d4e86aabafa94250a0bfa8d932084402f4 /gcc/toplev.c | |
| parent | e9c46bb75e87f0c3568372c6db9b77334556e440 (diff) | |
| download | gcc-8ecba28a999a6c9d277fba937943c8b7f1e0fb4b.zip gcc-8ecba28a999a6c9d277fba937943c8b7f1e0fb4b.tar.gz gcc-8ecba28a999a6c9d277fba937943c8b7f1e0fb4b.tar.bz2 | |
Makefile.in (cfgcleanup.o): Add cselib.h dependancy.
* Makefile.in (cfgcleanup.o): Add cselib.h dependancy.
* basic-block.h (CLEANUP_THREADING): New constant.
* cfgcleanup.c: Include cselib.h
(thread_jump, mark_effect): New functions.
(try_forward_edges): Do jump threading when asked for.
* jump.c (mark_modified_reg, save_regs, num_same_regs, modified_regs,
modified_mem, thread_jumps, rtx_equal_for-thread_p): Kill.
* rtl.h (thread_jumps, rtx_equal_for_thread_p): Kill.
* toplev.c (rest_of_compilation): Do now call thread_jumps; use
CLEANUP_THREAD instead.
From-SVN: r48108
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 31 |
1 files changed, 9 insertions, 22 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index e5619cf..bab08c8 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -2680,7 +2680,8 @@ rest_of_compilation (decl) if (optimize > 0) { find_basic_blocks (insns, max_reg_num (), rtl_dump_file); - cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); + cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP + | (flag_thread_jumps ? CLEANUP_THREADING : 0)); /* ??? Run if-conversion before delete_null_pointer_checks, since the later does not preserve the CFG. This should @@ -2721,13 +2722,6 @@ rest_of_compilation (decl) reg_scan (insns, max_reg_num (), 1); - if (flag_thread_jumps) - { - timevar_push (TV_JUMP); - thread_jumps (insns, max_reg_num (), 1); - timevar_pop (TV_JUMP); - } - tem = cse_main (insns, max_reg_num (), 0, rtl_dump_file); /* If we are not running more CSE passes, then we are no longer @@ -2750,14 +2744,16 @@ rest_of_compilation (decl) delete_trivially_dead_insns (insns, max_reg_num (), 0); /* Try to identify useless null pointer tests and delete them. */ - if (flag_delete_null_pointer_checks) + if (flag_delete_null_pointer_checks || flag_thread_jumps) { timevar_push (TV_JUMP); find_basic_blocks (insns, max_reg_num (), rtl_dump_file); - cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP); + cleanup_cfg (CLEANUP_EXPENSIVE | CLEANUP_PRE_LOOP + | (flag_thread_jumps ? CLEANUP_THREADING : 0)); - delete_null_pointer_checks (insns); + if (flag_delete_null_pointer_checks) + delete_null_pointer_checks (insns); /* CFG is no longer maintained up-to-date. */ free_bb_for_insn (); timevar_pop (TV_JUMP); @@ -2928,16 +2924,6 @@ rest_of_compilation (decl) } } - if (flag_thread_jumps) - { - /* This pass of jump threading straightens out code - that was kinked by loop optimization. */ - timevar_push (TV_JUMP); - reg_scan (insns, max_reg_num (), 0); - thread_jumps (insns, max_reg_num (), 0); - timevar_pop (TV_JUMP); - } - close_dump_file (DFI_cse2, print_rtl, insns); timevar_pop (TV_CSE2); @@ -2955,7 +2941,8 @@ rest_of_compilation (decl) open_dump_file (DFI_cfg, decl); find_basic_blocks (insns, max_reg_num (), rtl_dump_file); - cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0); + cleanup_cfg (optimize ? CLEANUP_EXPENSIVE : 0 + | (flag_thread_jumps ? CLEANUP_THREADING : 0)); check_function_return_warnings (); /* It may make more sense to mark constant functions after dead code is |