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| author | dje <dje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-03-03 16:32:45 +0000 |
|---|---|---|
| committer | dje <dje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-03-03 16:32:45 +0000 |
| commit | 839f841511dc0908d11199c48add0335fd068928 (patch) | |
| tree | a9a88dd3608db538ae3d670cde68145ab19f3038 /gcc/passes.c | |
| parent | 399d212bf0da5ed1e49763af597f5cdbcdc40acf (diff) | |
| download | gcc-839f841511dc0908d11199c48add0335fd068928.tar.gz | |
2004-03-03 Mostafa Hagog <mustafa@il.ibm.com>
* common.opt: Add description of the new -fgcse-after-reload flag.
* flags.h (flag_gcse_after_reload): Declaration of global variable.
* gcse.c (reg_used_on_edge ,reg_set_between_after_reload_p,
reg_used_between_after_reload_p, rtx get_avail_load_store_reg,
is_jump_table_basic_block, bb_has_well_behaved_predecessors,
get_bb_avail_insn, hash_scan_set_after_reload,
compute_hash_table_after_reload, eliminate_partially_redundant_loads,
gcse_after_reload, get_bb_avail_insn): New functions to implement
gcse-after-reload.
(gcse_after_reload_main): New function, the main entry point to
gcse-after-reload.
* rtl.h (gcse_after_reload_main): Declaration of the new function.
* opts.c (common_handle_option): Handle the -fgcse-after-reload flag.
* toplev.c (flag_gcse_after_reload): Initialization.
* passes.c (rest_of_handl_gcse2): Call gcse_after_reload_main.
* params.def (PARAM_GCSE_AFTER_RELOAD_PARTIAL_FRACTION,
PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION): New parameters for tuning
the gcse after reload optimization.
* params.h (GCSE_AFTER_RELOAD_PARTIAL_FRACTION,
GCSE_AFTER_RELOAD_CRITICAL_FRACTION): Two macros to access the tuning
parameters.
* doc/invoke.texi: Documentation for the new flag gcse-after-reload.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@78842 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/passes.c')
| -rw-r--r-- | gcc/passes.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/gcc/passes.c b/gcc/passes.c index 1b012772f4b..1bd554c61e1 100644 --- a/gcc/passes.c +++ b/gcc/passes.c @@ -158,6 +158,7 @@ enum dump_file_index DFI_lreg, DFI_greg, DFI_postreload, + DFI_gcse2, DFI_flow2, DFI_peephole2, DFI_ce3, @@ -178,7 +179,7 @@ enum dump_file_index Remaining -d letters: " e m q " - " JK O Q WXY " + " K O Q WXY " */ static struct dump_file_info dump_file_tbl[DFI_MAX] = @@ -210,6 +211,7 @@ static struct dump_file_info dump_file_tbl[DFI_MAX] = { "lreg", 'l', 1, 0, 0 }, { "greg", 'g', 1, 0, 0 }, { "postreload", 'o', 1, 0, 0 }, + { "gcse2", 'J', 0, 0, 0 }, { "flow2", 'w', 1, 0, 0 }, { "peephole2", 'z', 1, 0, 0 }, { "ce3", 'E', 1, 0, 0 }, @@ -788,6 +790,23 @@ rest_of_handle_sched2 (tree decl, rtx insns) } #endif +static void +rest_of_handle_gcse2 (tree decl, rtx insns) +{ + open_dump_file (DFI_gcse2, decl); + + gcse_after_reload_main (insns, dump_file); + rebuild_jump_labels (insns); + delete_trivially_dead_insns (insns, max_reg_num ()); + close_dump_file (DFI_gcse2, print_rtl_with_bb, insns); + + ggc_collect (); + +#ifdef ENABLE_CHECKING + verify_flow_info (); +#endif +} + /* Register allocation pre-pass, to reduce number of moves necessary for two-address machines. */ static void @@ -1842,6 +1861,9 @@ rest_of_compilation (tree decl) close_dump_file (DFI_postreload, print_rtl_with_bb, insns); + if (optimize > 0 && flag_gcse_after_reload) + rest_of_handle_gcse2 (decl, insns); + /* Re-create the death notes which were deleted during reload. */ timevar_push (TV_FLOW2); open_dump_file (DFI_flow2, decl); |