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| author | Mostafa Hagog <mustafa@il.ibm.com> | 2004-03-03 16:32:45 +0000 |
|---|---|---|
| committer | David Edelsohn <dje@gcc.gnu.org> | 2004-03-03 11:32:45 -0500 |
| commit | f9957958fe143fd987e0c3e339d2586dc7cc06cd (patch) | |
| tree | a9a88dd3608db538ae3d670cde68145ab19f3038 /gcc/common.opt | |
| parent | 6f6dedf5bdc043a65453543e03a055d6251c17e7 (diff) | |
| download | gcc-f9957958fe143fd987e0c3e339d2586dc7cc06cd.zip gcc-f9957958fe143fd987e0c3e339d2586dc7cc06cd.tar.gz gcc-f9957958fe143fd987e0c3e339d2586dc7cc06cd.tar.bz2 | |
common.opt: Add description of the new -fgcse-after-reload flag.
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.
From-SVN: r78842
Diffstat (limited to 'gcc/common.opt')
| -rw-r--r-- | gcc/common.opt | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index cc7f218..d9faa60 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -371,7 +371,13 @@ Perform store motion after global common subexpression elimination fgcse-las Common -Perform redundant load after store elimination in global common subexpression elimination +Perform redundant load after store elimination in global common subexpression +elimination + +fgcse-after-reload +Common +Perform global common subexpression elimination after register allocation +has finished. fguess-branch-probability Common |