PR c/50179
* c-typeck.c (c_process_expr_stmt): Skip over nops and
call mark_exp_read even if exprv is ADDR_EXPR.
* c-c++-common/Wunused-var-14.c: New test.
From-SVN: r178110
2011-08-26 Zdenek Dvorak <ook@ucw.cz>
Tom de Vries <tom@codesourcery.com>
* tree-ssa-loop-ivopts.c (struct cost_pair): Add comp field.
(struct ivopts_data): Add loop_single_exit_p field.
(niter_for_exit): Change parameter desc_p into return value. Return
desc if desc->may_be_zero. Free desc if unused.
(niter_for_single_dom_exit): Change return type.
(find_induction_variables): Handle changed return type of
niter_for_single_dom_exit. Dump may_be_zero.
(add_candidate_1): Keep original base and step type for IP_ORIGINAL.
(set_use_iv_cost): Add and handle comp parameter.
(determine_use_iv_cost_generic, determine_use_iv_cost_address): Add
comp argument to set_use_iv_cost.
(strip_wrap_conserving_type_conversions, expr_equal_p)
(difference_cannot_overflow_p, iv_elimination_compare_lt): New function.
(may_eliminate_iv): Add comp parameter. Handle new return type of
niter_for_exit. Use loop_single_exit_p. Use iv_elimination_compare_lt.
(determine_use_iv_cost_condition): Add comp argument to set_use_iv_cost
and may_eliminate_iv.
(rewrite_use_compare): Move call to iv_elimination_compare to ...
(may_eliminate_iv): Here.
(tree_ssa_iv_optimize_loop): Initialize loop_single_exit_p.
Co-Authored-By: Tom de Vries <tom@codesourcery.com>
From-SVN: r178104
2011-08-26 Tom de Vries <tom@codesourcery.com>
* tree-pretty-print (dump_generic_node): Test for NULL_TREE before
accessing TREE_TYPE.
From-SVN: r178103
* testsuite/libstdc++-prettyprinters/simple.cc: New file.
* testsuite/lib/gdb-test.exp: New file.
* testsuite/libstdc++-prettyprinters/prettyprinters.exp: New
file.
From-SVN: r178066
* regrename.c (scan_rtx_reg, scan_rtx_address, build_def_use,
dump_def_use_chain): Don't declare.
(mark_conflict, create_new_chain): Move before users.
(regrename_optimize): Move to near end of file.
From-SVN: r178065
* config/avr/avr.c (STR_PREFIX_P): New Define.
(avr_asm_declare_function_name): Use it.
(avr_asm_named_section): Use it.
(avr_section_type_flags): Use it.
From-SVN: r178062
2011-08-25 Andrew Haley <aph@redhat.com>
* src/arm/ffi.c (FFI_INIT_TRAMPOLINE): Remove hard-coded assembly
instructions.
* src/arm/sysv.S (ffi_arm_trampoline): Put them here instead.
From-SVN: r178060
* doc/md.texi (automata_option): Document collapse-ndfa.
* genautomata.c (COLLAPSE_OPTION): New macro.
(collapse_flag): New static variable.
(struct description): New member normal_decls_num.
(struct automaton): New members advance_ainsn and collapse_ainsn.
(gen_automata_option): Check for COLLAPSE_OPTION.
(collapse_ndfa_insn_decl): New static variable.
(add_collapse_ndfa_insn_decl, special_decl_p): New functions.
(find_arc): If insn is the collapse-ndfa insn, accept any arc we
find.
(transform_insn_regexps): Call add_collapse_ndfa_insn_decl if
necessary. Use normal_decls_num rather than decls_num, remove
test for special decls.
(create_alt_states, form_ainsn_with_same_reservs): Use
special_decl_p.
(make_automaton); Likewise. Use the new advance_cycle_insn member
of struct automaton.
(create_composed_state): Disallow advance-cycle arcs if collapse_flag
is set.
(NDFA_to_DFA): Don't create composed states for the collapse-ndfa
transition. Create the necessary transitions for it.
(create_ainsns): Return void. Take an automaton_t argument, and
update its ainsn_list, advance_ainsn and collapse_ainsn members. All
callers changed.
(COLLAPSE_NDFA_VALUE_NAME): New macro.
(output_tables): Output code to define it.
(output_internal_insn_code_evaluation): Output code to accept
const0_rtx as collapse-ndfa transition.
(output_default_latencies, output_print_reservation_func,
output_print_description): Reorganize loops to use normal_decls_num
as loop bound; remove special case for advance_cycle_insn_decl.
(initiate_automaton_gen): Handle COLLAPSE_OPTION.
(check_automata_insn_issues): Check for collapse_ainsn.
(expand_automate): Allocate sufficient space. Initialize
normal_decls_num.
From-SVN: r178059
* regrename.c (struct du_head): Remove member terminated.
(create_new_chain): Don't initialize it.
(scan_rtx_reg): Don't set or test it, test the open_chains_set
bitmap instead.
(tick, this_tick): New global variables, moved out of
regrename_optimize.
(current_id, open_chains, closed_chains, open_chains_set,
live_in_chains, live_hard_regs): Reorder declarations.
(dump_def_use_chain): Move function earlier in the file.
(rename_chains): New static function, broken out of
regrename_optimize.
(regrename_optimize): Use it. Remove #if 0'ed code.
From-SVN: r178057
gccgo: fixes to ast-dump, refactoring of export and ast-dump
to implement a common interface for writing basic
type literals and added flags for optimization.
* lang.opt: Add fgo-optimize-.
* go-lang.c (go_langhook_handle_option): Handle OPT_fgo_optimize.
* go-c.h (go_enable_optimize): Declare.
* Make-lang.in (GO_OBJS): Add go/go-optimize.o.
(GO_EXPORT_H): Define.
(GO_IMPORT_H): Add $(GO_EXPORT_H).
(GO_AST_DUMP_H): Define.
(go/ast-dump.o, go/statements.o): Use GO_AST_DUMP_H.
(go/export.o, go/gogo.o, go/import.o): Use GO_EXPORT_H.
(go/types.o): Likewise.
(go/expressions.o): Use GO_AST_DUMP_H and GO_EXPORT_H.
(go/go-optimize.o): New target.
From-SVN: r178046
2011-08-24 Richard Guenther <rguenther@suse.de>
* tree-data-ref.c (dr_analyze_indices): Avoid unsharing the
ref in the basic-block case. Move stripping array-refs
to the place we create an access-function for it. Remove
bogus stripping down a MEM_REF to its base.
From-SVN: r178037
2011-08-24 Richard Guenther <rguenther@suse.de>
* tree-vectorizer.c (vect_print_dump_info): Avoid the
file and location clutter when dumping to dump files.
From-SVN: r178034
2011-08-24 Richard Guenther <rguenther@suse.de>
PR tree-optimization/50067
* tree-data-ref.c (dr_analyze_indices): Do not add an access
function for a MEM_REF base that has no evolution in the loop
nest or that is not analyzable.
* gcc.dg/torture/pr50067-3.c: New testcase.
* gcc.dg/torture/pr50067-4.c: Likewise.
* gcc.dg/torture/pr50067-5.c: Likewise.
From-SVN: r178028
2011-08-23 Vladimir Makarov <vmakarov@redhat.com>
* ira.c (ira_init_register_move_cost): Check small subclasses
through ira_reg_class_max_nregs and ira_available_class_regs.
From-SVN: r178019
