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| author | Roger Sayle <roger@eyesopen.com> | 2003-01-16 01:06:33 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-01-16 01:06:33 +0000 |
| commit | a013431213f7f27e2866350c9aaea8f12046d81c (patch) | |
| tree | 2ecda5f756d588f0c8e2d12fbf3426b2b6eb164e /gcc/toplev.c | |
| parent | 6b543e86f4a765f6a0b7be90e393b9a772c22a52 (diff) | |
| download | gcc-a013431213f7f27e2866350c9aaea8f12046d81c.zip gcc-a013431213f7f27e2866350c9aaea8f12046d81c.tar.gz gcc-a013431213f7f27e2866350c9aaea8f12046d81c.tar.bz2 | |
gcse.c (one_cprop_pass): Change function arguments to take both cprop_jumps and bypass_jumps flags...
* gcse.c (one_cprop_pass): Change function arguments to take both
cprop_jumps and bypass_jumps flags instead of just alter_jumps.
(gcse_main): Update calls to one_cprop_pass, disabling bypassing.
(bypass_jumps): New function to perform separate jump bypassing pass.
* rtl.h (bypass_jumps): Add function prototype.
* timevar.def (TV_BYPASS): New timing variable.
* toplev.c (enum dump_file_index): Add new entry DFI_bypass.
(dump_file): New entry for the bypass RTL dump file.
(rest_of_compilation): Insert new jump bypassing optimization
pass after loop.
* doc/passes.texi: Document new pass.
From-SVN: r61374
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index 554f471..b860500 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -232,6 +232,7 @@ enum dump_file_index DFI_addressof, DFI_gcse, DFI_loop, + DFI_bypass, DFI_cfg, DFI_bp, DFI_ce1, @@ -281,6 +282,7 @@ static struct dump_file_info dump_file[DFI_MAX] = { "addressof", 'F', 0, 0, 0 }, { "gcse", 'G', 1, 0, 0 }, { "loop", 'L', 1, 0, 0 }, + { "bypass", 'G', 1, 0, 0 }, /* Yes, duplicate enable switch. */ { "cfg", 'f', 1, 0, 0 }, { "bp", 'b', 1, 0, 0 }, { "ce1", 'C', 1, 0, 0 }, @@ -2964,6 +2966,32 @@ rest_of_compilation (decl) ggc_collect (); } + /* Perform jump bypassing and control flow optimizations. */ + if (optimize > 0 && flag_gcse) + { + timevar_push (TV_BYPASS); + open_dump_file (DFI_bypass, decl); + + cleanup_cfg (CLEANUP_EXPENSIVE); + tem = bypass_jumps (rtl_dump_file); + + if (tem) + { + rebuild_jump_labels (insns); + cleanup_cfg (CLEANUP_EXPENSIVE); + delete_trivially_dead_insns (insns, max_reg_num ()); + } + + close_dump_file (DFI_bypass, print_rtl_with_bb, insns); + timevar_pop (TV_BYPASS); + + ggc_collect (); + +#ifdef ENABLE_CHECKING + verify_flow_info (); +#endif + } + /* Do control and data flow analysis; wrote some of the results to the dump file. */ |