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author | Alexandre Oliva <aoliva@redhat.com> | 2015-06-09 05:05:34 +0000 |
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committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2015-06-09 05:05:34 +0000 |
commit | 7b337d2061bedcf494e7c8d42323d3959caef74e (patch) | |
tree | bac856cb62a97163cdde29bfc7fa11e37223f0bf /gcc/explow.h | |
parent | f79c81b920e70f16e67fa0eabf35ade358e5d3da (diff) | |
download | gcc-7b337d2061bedcf494e7c8d42323d3959caef74e.zip gcc-7b337d2061bedcf494e7c8d42323d3959caef74e.tar.gz gcc-7b337d2061bedcf494e7c8d42323d3959caef74e.tar.bz2 |
[PR64164] Drop copyrename, use coalescible partition as base when optimizing.
for gcc/ChangeLog
PR rtl-optimization/64164
* Makefile.in (OBJS): Drop tree-ssa-copyrename.o.
* tree-ssa-copyrename.c: Removed.
* opts.c (default_options_table): Drop -ftree-copyrename. Add
-ftree-coalesce-vars.
* passes.def: Drop all occurrences of pass_rename_ssa_copies.
* common.opt (ftree-copyrename): Ignore.
(ftree-coalesce-inlined-vars): Likewise.
* doc/invoke.texi: Remove the ignored options above.
* gimple-expr.h (gimple_can_coalesce_p): Move declaration
* tree-ssa-coalesce.h: ... here.
* tree-ssa-uncprop.c: Include tree-ssa-coalesce.h and other
headers required by it.
* gimple-expr.c (gimple_can_coalesce_p): Allow coalescing
across variables when flag_tree_coalesce_vars. Check register
use and promoted modes to allow coalescing. Moved to
tree-ssa-coalesce.c.
* tree-ssa-live.c (struct tree_int_map_hasher): Move along
with its member functions to tree-ssa-coalesce.c.
(var_map_base_init): Likewise. Renamed to
compute_samebase_partition_bases.
(partition_view_normal): Drop want_bases parameter.
(partition_view_bitmap): Likewise.
* tree-ssa-live.h: Adjust declarations.
* tree-ssa-coalesce.c: Include explow.h.
(build_ssa_conflict_graph): Process PARM_ and RESULT_DECLs's
default defs at the entry point.
(dump_part_var_map): New.
(compute_optimized_partition_bases): New, called by...
(coalesce_ssa_name): ... when flag_tree_coalesce_vars, instead
of compute_samebase_partition_bases. Adjust.
* alias.c (nonoverlapping_memrefs_p): Disregard gimple-regs.
* cfgexpand.c (leader_merge): New.
(get_rtl_for_parm_ssa_default_def): New.
(set_rtl): Merge exprs and attrs, even for MEMs and non-SSA
vars. Update DECL_RTL for PARM_DECLs and RESULT_DECLs too.
(expand_one_stack_var_at): Handle anonymous SSA_NAMEs. Drop
redundant MEM attr setting.
(expand_one_stack_var_1): Handle anonymous SSA_NAMEs. Renamed
from...
(expand_one_stack_var): ... this. New wrapper to check and
skip already expanded SSA partitions.
(record_alignment_for_reg_var): New, factored out of...
(expand_one_var): ... this.
(expand_one_ssa_partition): New.
(adjust_one_expanded_partition_var): New.
(expand_one_register_var): Check and skip already expanded SSA
partitions.
(expand_used_vars): Don't create DECLs for anonymous SSA
names. Expand all SSA partitions, then adjust all SSA names.
(pass::execute): Replace the loops that set
SA.partition_to_pseudo from partition leaders and cleared
DECL_RTL for multi-location variables, and that which used to
rename vars and set attrs, with one that clears DECL_RTL and
checks that PARMs and RESULTs default_defs match DECL_RTL.
* cfgexpand.h (get_rtl_for_parm_ssa_default_def): Declare.
* emit-rtl.c (set_reg_attrs_for_parm): Handle NULL decl.
* explow.c (promote_ssa_mode): New.
* explow.h (promote_ssa_mode): Declare.
* expr.c (expand_expr_real_1): Handle anonymous SSA_NAMEs.
* function.c: Include cfgexpand.h.
(use_register_for_decl): Handle SSA_NAMEs, anonymous or not.
(use_register_for_parm_decl): Wrapper for the above to
special-case the result_ptr.
(rtl_for_parm): Ditto for get_rtl_for_parm_ssa_default_def.
(maybe_reset_rtl_for_parm): Reset DECL_RTL of parms with
multiple locations.
(assign_parm_adjust_stack_rtl): Add all and parm arguments,
for rtl_for_parm. For SSA-assigned parms, zero stack_parm.
(assign_parm_setup_block): Prefer SSA-assigned location.
(assign_parm_setup_reg): Likewise. Use entry_parm for equiv
if stack_parm is NULL.
(assign_parm_setup_stack): Prefer SSA-assigned location.
(assign_parms): Maybe reset DECL_RTL of params. Adjust stack
rtl before testing for pointer bounds. Special-case result_ptr.
(expand_function_start): Maybe reset DECL_RTL of result.
Prefer SSA-assigned location for result and static chain.
Factor out DECL_RESULT and SET_DECL_RTL.
* tree-outof-ssa.c (insert_value_copy_on_edge): Handle
anonymous SSA names. Use promote_ssa_mode.
(get_temp_reg): Likewise.
(remove_ssa_form): Adjust.
* var-tracking.c (dataflow_set_clear_at_call): Take call_insn
and get its reg_usage for reg invalidation.
(compute_bb_dataflow): Pass it insn.
(emit_notes_in_bb): Likewise.
* tree-ssa-loop-niter.c (loop_exits_before_overflow): Don't
fail assert on conversion between unsigned types.
for gcc/testsuite/ChangeLog
* gcc.dg/guality/pr54200.c: Add -fno-tree-coalesce-vars.
* gcc.dg/ssp-1.c: Make counter a register.
* gcc.dg/ssp-2.c: Likewise.
* gcc.dg/torture/parm-coalesce.c: New.
From-SVN: r224262
Diffstat (limited to 'gcc/explow.h')
-rw-r--r-- | gcc/explow.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/explow.h b/gcc/explow.h index 94613de..52113db 100644 --- a/gcc/explow.h +++ b/gcc/explow.h @@ -57,6 +57,9 @@ extern machine_mode promote_mode (const_tree, machine_mode, int *); /* Return mode and signedness to use when object is promoted. */ machine_mode promote_decl_mode (const_tree, int *); +/* Return mode and signedness to use when object is promoted. */ +machine_mode promote_ssa_mode (const_tree, int *); + /* Remove some bytes from the stack. An rtx says how many. */ extern void adjust_stack (rtx); |