Jiong Wang [Wed, 19 Aug 2015 22:55:28 +0000 (22:55 +0000)]
[Patch][expand] Check gimple statement to improve LSHIFT_EXP expand
This patch improves LSHIFT_EXP expand if the shift operand comes from sign
extension and the shift result across word_mode_size boundary. See code
comments for details.
2015-08-19 Jiong.Wang <jiong.wang@arm.com>
gcc/
* expr.c (expand_expr_real_2): Check gimple statement during
LSHIFT_EXPR expand.
Alexandre Oliva [Wed, 19 Aug 2015 17:00:32 +0000 (17:00 +0000)]
[PR64164] fix regressions reported on m68k and armeb
Defer stack slot address assignment for all parms that can't live in
pseudos, and accept pseudos assignments in assign_param_setup_block.
for gcc/ChangeLog
PR rtl-optimization/64164
* cfgexpand.c (parm_maybe_byref_p): Renamed to...
(parm_in_stack_slot_p): ... this. Disregard mode, what
matters is whether the parm will live in a pseudo or a stack
slot.
(expand_one_ssa_partition): Deal with params without a default
def. Disregard mode.
* cfgexpand.h: Renamed function declaration.
* tree-ssa-coalesce.c: Adjust.
* function.c (split_complex_args): Allocate stack slot for
unassigned parms before splitting.
(parm_in_unassigned_mem_p): New. Use it instead of
parm_maybe_byref_p throughout this file.
(assign_parm_setup_block): Use it. Accept pseudos in the
expand-assigned rtl.
(assign_parm_setup_reg): Drop BLKmode requirement.
(assign_parm_setup_stack): Allocate and fill in the address of
unassigned MEM parms.
David Sherwood [Wed, 19 Aug 2015 15:23:11 +0000 (15:23 +0000)]
genmodes.c (emit_mode_unit_size_inline): New function.
2015-08-19 David Sherwood <david.sherwood@arm.com>
gcc/
* genmodes.c (emit_mode_unit_size_inline): New function.
(emit_mode_unit_precision_inline): New function.
(emit_insn_modes_h): Emit new #define. Emit new functions.
(emit_mode_unit_size): New function.
(emit_mode_unit_precision): New function.
(emit_mode_adjustments): Add mode_unit_size adjustments.
(emit_insn_modes_c): Emit new arrays.
* machmode.h (GET_MODE_UNIT_SIZE, GET_MODE_UNIT_PRECISION): Update to
use new inline methods.
Mikael Morin [Wed, 19 Aug 2015 13:42:36 +0000 (13:42 +0000)]
Avoid signed left shift undefined behaviour in sext_hwi
gcc/
PR other/67042
* hwint.h (sext_hwi): Switch to unsigned for the left shift, and
conditionalize the whole on __GNUC__. Add fallback code
depending neither on undefined nor implementation-defined behaviour.
Florian Weimer [Wed, 19 Aug 2015 13:00:24 +0000 (15:00 +0200)]
Make the stack non-executable in GNAT tools
Due to PR67205, the deeply nested instantiations require trampolines,
which in turn requires an executable stack for the GNAT tools on
architectures such as x86_64.
re PR middle-end/36757 (__builtin_signbit should be type-generic)
PR middle-end/36757
* builtins.c (expand_builtin_signbit): Add asserts to make sure
we can expand BUILT_IN_SIGNBIT inline.
* builtins.def (BUILT_IN_SIGNBIT): Make type-generic.
* doc/extend.texi: Document the type-generic __builtin_signbit.
* c-common.c (check_builtin_function_arguments): Add check
for BUILT_IN_SIGNBIT argument.
* gcc.dg/builtins-error.c: Add checks for __builtin_signbit.
* gcc.dg/tg-tests.h: Add checks for __builtin_signbit.
* tree-ssa-loop-niter.c (refine_value_range_using_guard): New.
(determine_value_range): Call refine_value_range_using_guard for
each loop initial condition to improve value range.
gcc/testsuite/ChangeLog
* gcc.dg/tree-ssa/loop-bound-1.c: New test.
* gcc.dg/tree-ssa/loop-bound-3.c: New test.
* gcc.dg/tree-ssa/loop-bound-5.c: New test.
Max Filippov [Tue, 18 Aug 2015 01:08:22 +0000 (01:08 +0000)]
xtensa: fix _Unwind_GetCFA
Returning context->cfa in _Unwind_GetCFA makes CFA point one stack frame
higher than what was actually used by code at context->ra. This results
in invalid CFA value in signal frames and premature unwinding completion
in forced unwinding used by uClibc NPTL thread cancellation.
Returning context->sp from _Unwind_GetCFA makes all CFA values valid and
matching code that used them.
2015-08-18 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/unwind-dw2-xtensa.c (_Unwind_GetCFA): Return
context->sp instead of context->cfa.
Max Filippov [Tue, 18 Aug 2015 01:05:44 +0000 (01:05 +0000)]
xtensa: reimplement register spilling
Spilling windowed registers in userspace is much easier, more portable,
less error-prone and equally effective as in kernel. Now that register
spilling syscall is considered obsolete in the xtensa linux kernel
replace it with CALL12 followed by series of ENTRY in libgcc.
2015-08-18 Max Filippov <jcmvbkbc@gmail.com>
libgcc/
* config/xtensa/lib2funcs.S (__xtensa_libgcc_window_spill): Use
CALL12 followed by series of ENTRY to spill windowed registers.
(__xtensa_nonlocal_goto): Call __xtensa_libgcc_window_spill
instead of making linux spill syscall.
Jason Merrill [Mon, 17 Aug 2015 18:41:59 +0000 (14:41 -0400)]
constexpr.c (cxx_eval_store_expression): Don't set CONSTRUCTOR_NO_IMPLICIT_ZERO if we have an enclosing CONSTRUCTOR...
* constexpr.c (cxx_eval_store_expression): Don't set
CONSTRUCTOR_NO_IMPLICIT_ZERO if we have an enclosing CONSTRUCTOR
without it.
(cxx_eval_array_reference): Check it.
Richard Biener [Mon, 17 Aug 2015 14:17:33 +0000 (14:17 +0000)]
re PR tree-optimization/67221 (ICE at -Os and above on x86_64-linux-gnu: Segmentation fault (program cc1))
2015-08-17 Richard Biener <rguenther@suse.de>
PR tree-optimization/67221
* tree-ssa-sccvn.c (visit_phi): Keep all-TOP args TOP.
(sccvn_dom_walker::before_dom_children): Mark backedges of
non-executable blocks as not executable.
Mike Stump [Mon, 17 Aug 2015 09:39:58 +0000 (09:39 +0000)]
[ARM] arm memcpy of aligned data
2015-08-17 Mike Stump <mikestump@comcast.net>
* config/arm/arm.c (arm_block_move_unaligned_straight):
Emit normal move instead of unaligned load when source or destination
are appropriately aligned.
2015-08-17 Mike Stump <mikestump@comcast.net>
Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Alexandre Oliva [Fri, 14 Aug 2015 18:51:50 +0000 (18:51 +0000)]
[PR64164] Drop copyrename, use coalescible partition as base when optimizing.
for gcc/ChangeLog
PR rtl-optimization/64164
PR bootstrap/66978
PR middle-end/66983
PR rtl-optimization/67000
PR middle-end/67034
PR middle-end/67035
* 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. Do not coalesce
maybe-byref parms with SSA_NAMEs of other variables, or
anonymous SSA_NAMEs. 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 and cfgexpand.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, parm_maybe_byref_p): New.
(ssa_default_def_partition): New.
(get_rtl_for_parm_ssa_default_def): New.
(align_local_variable, add_stack_var): Support anonymous SSA
names.
(defer_stack_allocation): Likewise. Declare earlier.
(set_rtl): Merge exprs and attrs, even for MEMs and non-SSA
vars. Update DECL_RTL for PARM_DECLs and RESULT_DECLs too.
Do no record deferred-allocation marker in
SA.partition_to_pseudo.
(expand_stack_vars): Adjust check for the marker in it.
(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: Include stor-layout.h.
(set_reg_attrs_for_parm): Handle NULL decl.
(set_reg_attrs_for_decl_rtl): Take mode from expression if
it's not a DECL.
* stmt.c (emit_case_decision_tree): Pass it the SSA_NAME
rather than its possibly-NULL DECL.
* explow.c (promote_ssa_mode): New.
* explow.h (promote_ssa_mode): Declare.
* expr.c (expand_expr_real_1): Handle anonymous SSA_NAMEs.
(read_complex_part): Export.
* expr.h (read_complex_part): Declare.
* cfgexpand.h (parm_maybe_byref_p): Declare.
* 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.
(split_complex_args): Take assign_parm_data_all argument.
Pass it to rtl_for_parm. Set up rtl and context for split
args. Reset complex parm before fetching its default decl
rtl.
(assign_parms_unsplit_complex): Use the default-def complex
parm rtl if it matches the components.
(assign_parms_augmented_arg_list): Adjust.
(maybe_reset_rtl_for_parm): Reset DECL_RTL of parms with
multiple locations. Recognize split complex args.
(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, and
fill in its address if the memory location of a maybe-byref
parm was not assigned by cfgexpand.
(assign_parm_setup_reg): Likewise. Adjust its mode as
needed. Use entry_parm for equiv if stack_parm is NULL. Make
sure passed_pointer parms don't need conversion. Copy address
or value as needed.
(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. Convert static chain
to Pmode if needed, from H.J. Lu <hongjiu.lu@intel.com>.
* 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.
* stor-layout.c (layout_decl): Don't set mem attributes of
non-MEMs.
* 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.
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.
Thomas Schwinge [Fri, 14 Aug 2015 10:37:14 +0000 (12:37 +0200)]
Add DWARF2_LINENO_DEBUGGING_INFO, and use it for nvptx
gcc/
* config/nvptx/nvptx.c (nvptx_option_override): Don't override
debug options.
* config/nvptx/nvptx.h (DWARF2_LINENO_DEBUGGING_INFO): Define.
(DWARF2_DEBUGGING_INFO): Don't define.
* debug.h (dwarf2_lineno_debug_hooks): Declare.
* toplev.c (process_options): Add a case for it.
* dwarf2out.c (dwarf2_lineno_debug_hooks): New variable.
(dwarf2out_init): Skip most initializations if
DWARF2_LINENO_DEBUGGING_INFO, but set cur_line_info_table in that
case.
* defaults.h (PREFERRED_DEBUGGING_TYPE): Also use DWARF2_DEBUG if
DWARF2_LINENO_DEBUGGING_INFO.
* opts.c (set_debug_level): Likewise.
Jeff Law [Thu, 13 Aug 2015 22:19:56 +0000 (16:19 -0600)]
pr66314.c: Moved from here to ..
* gcc.dg/pr66314.c: Moved from here to ..
* gcc.dg/asan/pr66314.c: Here. Use -fno-sanitize=all
to clear all sanitizers before -fsanitize=kernel-address.
re PR middle-end/55035 (reload1.c:3766:41: error: ‘orig_dup[0]’ may be used uninitialized in this function (for fr30, microblaze, moxie, rl78))
gcc/
PR bootstrap/55035
* reload1.c (elimination_costs_in_insn): Make it obvious to the
compiler that the n_dups and n_operands loop bounds are invariant.
Richard Biener [Thu, 13 Aug 2015 09:39:50 +0000 (09:39 +0000)]
re PR tree-optimization/67191 (ICE: in before_dom_children, at tree-ssa-sccvn.c:4372)
2015-08-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/67191
* tree-ssa-sccvn.c (sccvn_dom_walker::before_dom_children): Remove
assert we value-numbered last stmts operand because it can validly
trigger for unreachable code.
* gcc.dg/torture/pr67191.c: New testcase.
* g++.dg/torture/pr67191.C: Likewise.
Richard Biener [Thu, 13 Aug 2015 07:52:06 +0000 (07:52 +0000)]
tree-ssa-sccvn.c (vn_nary_op_compute_hash): Also canonicalize comparison operand order and commutative ternary op operand order.
2015-08-12 Richard Biener <rguenther@suse.de>
* tree-ssa-sccvn.c (vn_nary_op_compute_hash): Also canonicalize
comparison operand order and commutative ternary op operand order.
(sccvn_dom_walker::cond_stack): New state to track temporary
expressions.
(sccvn_dom_walker::after_dom_children): Remove tempoary expressions
no longer valid.
(sccvn_dom_walker::record_cond): Add a single temporary conditional
expression.
(sccvn_dom_walker::record_conds): Add a temporary conditional
expressions and all related expressions also true/false.
(sccvn_dom_walker::before_dom_children): Record temporary
expressions based on the controlling condition of a single
predecessor. When trying to simplify a conditional statement
lookup expressions we might have inserted earlier.
projects / thirdparty / gcc.git / log
