* system.h [__cplusplus]: Wrap C function declarations in extern "C".
-This line, and those below, will be ignored--
M ChangeLog
M system.h
From-SVN: r176748
2011-07-25 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49822
* tree-ssa-forwprop.c (remove_prop_source_from_use): Robustify
more. Make sure to preserve stmts with side-effects. Properly
handle virtual defs, follow a longer def chain.
From-SVN: r176745
2011-07-25 Richard Guenther <rguenther@suse.de>
* tree-vrp.c (num_vr_values, values_propagated): New global vars.
(get_value_range): For out-of-range SSA names or names created
after propagation return a read-only varying range.
(dump_all_value_ranges): Adjust.
(vrp_initialize): Likewise.
(vrp_finalize): Likewise.
From-SVN: r176734
PR debug/49831
* dwarf2cfi.c (connect_traces): Allow unvisited traces. Skip
them entirely.
Constant pools are emitted in such a way as to be indistinguishable
from regular instructions, and these constant pools are, naturally,
not reachable as code.
From-SVN: r176730
2011-07-24 Sandra Loosemore <sandra@codesourcery.com>
gcc/
* configure.ac (demangler_in_ld): Default to yes.
* configure: Regenerated.
* collect2.c (main): When HAVE_LD_DEMANGLE is defined, don't
mess with COLLECT_NO_DEMANGLE, and just pass --demangle and
--no-demangle options straight through to ld. When
HAVE_LD_DEMANGLE is not defined, set COLLECT_NO_DEMANGLE in a
way that has the intended effect on Windows.
From-SVN: r176720
2011-07-24 Paolo Carlini <paolo.carlini@oracle.com>
* include/bits/hashtable_policy.h (_Prime_rehash_policy::_M_next_bkt,
_M_bkt_for_elements, _M_need_rehash): Fix typos in the last commit.
From-SVN: r176718
2011-07-24 François Dumont <francois.cppdevs@free.fr>
* include/bits/hashtable_policy.h (_Prime_rehash_policy): Use
__builtin_floor rather than __builtin_ceil to compute next resize
value.
* testsuite/23_containers/unordered_set/hash_policy/load_factor.cc:
New.
From-SVN: r176717
* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Subprogram_Type>: If the
subprogram has copy-in copy-out parameters, try to promote the mode of
the return type if it is passed in registers.
From-SVN: r176714
* gcc-interface/gigi.h (build_function_stub): Remove.
(build_return_expr): Likewise.
(convert_vms_descriptor): Declare.
* gcc-interface/utils.c (convert_vms_descriptor): Make global.
(build_function_stub): Move to...
* gcc-interface/utils2.c (build_return_expr): Move to...
* gcc-interface/trans.c (build_function_stub): ...here.
(build_return_expr): ...here.
(Subprogram_Body_to_gnu): Add local variable for language_function.
Disconnect the parameter attributes cache, if any, once done with it.
Call end_subprog_body only after setting the end_locus.
Build the stub associated with the function, if any, at the very end.
(gnat_to_gnu) <N_Return_Statement>: Remove couple of useless local
variables and streamline control flow.
From-SVN: r176712
This kinda-sorta corresponds to Bernd's 007-dw2cfi patch. Certainly
the same concepts of splitting the instruction stream into extended
basic blocks is the same. This patch does a bit better job with the
documentation. Also, I'm a bit more explicit about matching things
up with the similar code from the regular CFG routines.
What's missing at this point is any attempt to use DW_CFA_remember_state.
I've deferred that for the moment because it's easy to test the state
change code across epilogues, whereas the shrink-wrapping code is not
in this tree and section switching is difficult to force.
* dwarf2cfi.c: Include basic-block.h.
(dw_label_info): Remove.
(trace_work_list, trace_index): New.
(remember_row, emit_cfa_remember): Remove.
(dw_trace_info_hash, dw_trace_info_eq): New.
(get_trace_index, get_trace_info): New.
(save_point_p): New.
(free_cfi_row): Remove.
(add_cfi): Do not emit DW_CFA_remember_state.
(cfa_row_equal_p): New.
(barrier_args_size): Remove.
(compute_barrier_args_size_1, compute_barrier_args_size): Remove.
(dwarf2out_notice_stack_adjust): Don't compute_barrier_args_size.
(maybe_record_trace_start, create_trace_edges, scan_trace): New.
(dwarf2out_cfi_begin_epilogue): Remove.
(dwarf2out_frame_debug_restore_state): Remove.
(connect_traces, create_pseudo_cfg): New.
(create_cfi_notes, execute_dwarf2_frame): Rewrite using traces.
* Makefile.in (dwarf2cfi.o): Update.
From-SVN: r176705
This patch only introduces the structure definition and adjusts
the existing routines to use the new cur_trace global to access
the variables that were moved into the structure.
* dwarf2cfi.c (dw_trace_info): New.
(dw_label_info): New.
(cie_return_save): New.
(cur_trace): New.
(queued_args_size): Rename from args_size. Update all users.
(cfa_store, cfa_temp, regs_saved_in_regs): Remove.
(def_cfa_1): Use cur_trace instead of cfa_*.
(dwarf2out_stack_adjust, record_reg_saved_in_reg): Likewise.
(clobbers_queued_reg_save, reg_saved_in): Likewise.
(dwarf2out_frame_debug_expr): Likewise.
(create_cie_data): Split out from ...
(execute_dwarf2_frame): ... here. Initialize cur_trace.
From-SVN: r176704
* dwarf2cfi.c (regs_saved_in_regs): Allocate from heap, not gc.
Update all users to match.
(execute_dwarf2_frame): Free reg_saved_in_data.
From-SVN: r176703
Also, allocate it in the heap instead of garbage collected.
* dwarf2cfi.c (queued_reg_save): Reorder for packing. Don't GTY.
(queued_reg_saves): Don't GTY. Change to a VEC.
(queue_reg_save): Update to match.
(dwarf2out_flush_queued_reg_saves): Likewise.
(clobbers_queued_reg_save): Likewise.
(reg_saved_in): Likewise.
(execute_dwarf2_frame): Free queued_reg_saves.
From-SVN: r176702
Add a generic function to adjust cfi state from one row to another.
Use this to implement text section switching. This will also be
usable for arbitrary changes around a cfg for shrink-wrapping.
* dwarf2cfi.c (add_cfi_args_size): Split out from...
(dwarf2out_args_size): ... here.
(add_cfi_restore): Split out from ...
(dwarf2out_frame_debug_cfa_restore): ... here.
(def_cfa_0): Split out from ...
(def_cfa_1): ... here.
(cfi_oprnd_equal_p, cfi_equal_p): New.
(change_cfi_row): New.
(add_cfis_to_fde): Set fde->dw_fde_switch_cfi_index.
(create_cfi_notes): Use change_cfi_row at SWITCH_TEXT note.
(output_cfis): Remove.
* dwarf2out.c (output_fde): Simplify output_cfi loop.
(dwarf2out_switch_text_section): Don't call output_cfis.
(dw_val_equal_p, loc_descr_equal_p_1, loc_descr_equal_p): New.
* dwarf2out.h: Update decls.
(enum dw_val_class): Add dw_val_class_none.
From-SVN: r176700
To be actually used by a subsequent patch.
* dwarf2cfi.c (update_row_reg_save): New.
(dwarf2out_frame_debug_cfa_expression): Use it.
(dwarf2out_frame_debug_cfa_restore): Likewise.
(reg_save): Likewise. Do not emit DW_CFA_same_value.
From-SVN: r176699
Use it instead of old_cfa, old_args_size, and cfa_remember variables.
Remove the global cfa variable, as it was usually a duplicate of
old_cfa and otherwise confusing. Always make a local copy of the
cur_row->cfa variable before modification instead.
* dwarf2cfi.c (dw_cfi_row, dw_cfi_row_ref): New.
(cie_cfi_row): New.
(new_cfi_row, copy_cfi_row, free_cfi_row): New.
(cfa, old_cfa, cfa_remember, old_cfa_remember, old_args_size): Remove.
(cur_row, remember_row): New.
(def_cfa_1): Use cur_row instead of the old_* variables.
(dwarf2out_frame_debug_restore_state): Similarly.
(dwarf2out_args_size, dwarf2out_notice_stack_adjust): Likewise.
(dwarf2out_frame_debug_def_cfa): Use a local variable instead of cfa.
(dwarf2out_frame_debug_adjust_cfa): Likewise.
(dwarf2out_frame_debug_cfa_offset): Likewise.
(dwarf2out_frame_debug_expr): Likewise.
(execute_dwarf2_frame): Set up cur_row.
* dwarf2out.h (struct cfa_loc): Mark for GTY.
From-SVN: r176697
