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| author | bonzini <bonzini@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-11-04 08:36:45 +0000 |
|---|---|---|
| committer | bonzini <bonzini@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-11-04 08:36:45 +0000 |
| commit | 42a3a38baf5b4db458e3034643c30598706be2fd (patch) | |
| tree | ba024c11cf4d0fba9de80471ac1eedc16e891dca /gcc/common.opt | |
| parent | b8dcd8a1e4168f06399318ef24d561455003f62d (diff) | |
| download | gcc-42a3a38baf5b4db458e3034643c30598706be2fd.tar.gz | |
2006-11-03 Paolo Bonzini <bonzini@gnu.org>
Steven Bosscher <stevenb.gcc@gmail.com>
* fwprop.c: New file.
* Makefile.in: Add fwprop.o.
* tree-pass.h (pass_rtl_fwprop, pass_rtl_fwprop_with_addr): New.
* passes.c (init_optimization_passes): Schedule forward propagation.
* rtlanal.c (loc_mentioned_in_p): Support NULL value of the second
parameter.
* timevar.def (TV_FWPROP): New.
* common.opt (-fforward-propagate): New.
* opts.c (decode_options): Enable forward propagation at -O2.
* gcse.c (one_cprop_pass): Do not run local cprop unless touching jumps.
* cse.c (fold_rtx_subreg, fold_rtx_mem, fold_rtx_mem_1, find_best_addr,
canon_for_address, table_size): Remove.
(new_basic_block, insert, remove_from_table): Remove references to
table_size.
(fold_rtx): Process SUBREGs and MEMs with equiv_constant, make
simplification loop more straightforward by not calling fold_rtx
recursively.
(equiv_constant): Move here a small part of fold_rtx_subreg,
do not call fold_rtx. Call avoid_constant_pool_reference
to process MEMs.
* recog.c (canonicalize_change_group): New.
* recog.h (canonicalize_change_group): New.
* doc/invoke.texi (Optimization Options): Document fwprop.
* doc/passes.texi (RTL passes): Document fwprop.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118475 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/common.opt')
| -rw-r--r-- | gcc/common.opt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index 204560f5fba..4aaa4d20f18 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -444,6 +444,10 @@ fforce-mem Common Report Var(flag_force_mem) Copy memory operands into registers before use +fforward-propagate +Common Report Var(flag_forward_propagate) +Perform a forward propagation pass on RTL + ; Nonzero means don't put addresses of constant functions in registers. ; Used for compiling the Unix kernel, where strange substitutions are ; done on the assembly output. |