2014-04-28 Richard Biener <rguenther@suse.de>
* tree-vrp.c (vrp_var_may_overflow): Remove.
(vrp_visit_phi_node): Rather than bumping to +-INF possibly
with overflow immediately bump to one before that value and
let iteration figure out overflow status.
* gcc.dg/tree-ssa/vrp91.c: New testcase.
* gcc.dg/Wstrict-overflow-14.c: XFAIL.
* gcc.dg/Wstrict-overflow-15.c: Likewise.
* gcc.dg/Wstrict-overflow-18.c: Remove XFAIL.
From-SVN: r209862
PR tree-optimization/60902
* tree-ssa-threadedge.c
(record_temporary_equivalences_from_stmts_at_dest): Only iterate
over real defs when invalidating outputs from statements that do not
produce useful outputs for threading.
From-SVN: r209860
2014-04-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/60979
* graphite-scop-detection.c (scopdet_basic_block_info): Reject
SCOPs that end in a block with a successor with abnormal
predecessors.
* gcc.dg/graphite/pr60979.c: New testcase.
From-SVN: r209859
* configure.ac: Tweak GAS check for LEON instructions on SPARC.
* configure: Regenerate.
* config/sparc/sparc.opt (muser-mode): New option.
* config/sparc/sync.md (atomic_compare_and_swap<mode>_1): Do not enable
for LEON3.
(atomic_compare_and_swap_leon3_1): New instruction for LEON3.
* doc/invoke.texi (SPARC options): Document -muser-mode.
From-SVN: r209850
2014-04-27 Tim Shen <timshen91@gmail.com>
* include/bits/regex_automaton.h (_NFA<>::_M_insert_repeat):
Add _S_opcode_repeat support to distingush a loop from
_S_opcode_alternative.
* include/bits/regex_automaton.tcc (_State_base::_M_print,
_State_base::_M_dot, _NFA<>::_M_eliminate_dummy,
_StateSeq<>::_M_clone): Likewise.
* include/bits/regex_compiler.tcc (_Compiler<>::_M_quantifier):
Likewise.
* include/bits/regex_executor.tcc (_Executor<>::_M_dfs): Likewise.
* include/bits/regex_scanner.tcc (_Scanner<>::_M_eat_escape_ecma):
Uglify local variable __i.
* include/bits/regex_compiler.h (_BracketMatcher<>::_M_make_cache):
Use size_t instead of int to compare with vector::size().
2014-04-27 Tim Shen <timshen91@gmail.com>
* include/bits/regex_executor.h: Add _M_rep_count to track how
many times this repeat node are visited.
* include/bits/regex_executor.tcc (_Executor<>::_M_rep_once_more,
_Executor<>::_M_dfs): Use _M_rep_count to prevent entering
infinite loop.
2014-04-27 Tim Shen <timshen91@gmail.com>
* include/bits/regex.tcc (__regex_algo_impl<>): Remove
_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT and use
_GLIBCXX_REGEX_USE_THOMPSON_NFA instead.
* include/bits/regex_automaton.h: Remove quantifier counting variable.
* include/bits/regex_automaton.tcc (_State_base::_M_dot):
Adjust debug NFA dump.
From-SVN: r209844
gcc/
* cselib.c (find_slot_memmode): Delete.
(cselib_hasher): Change compare_type to a struct.
(cselib_hasher::equal): Update accordingly. Don't expect wrapped
constants.
(preserve_constants_and_equivs): Adjust for new compare_type.
(cselib_find_slot): Likewise. Take the mode of the rtx as argument.
(wrap_constant): Delete.
(cselib_lookup_mem, cselib_lookup_1): Update calls to cselib_find_slot.
From-SVN: r209843
2014-03-27 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/59604
PR fortran/58003
* gfortran.h (gfc_convert_mpz_to_signed): Add prototype.
* arith.c (gfc_int2int): Convert number to signed if
arithmetic overflow is not checked.
* simplify.c (convert_mpz_to_unsigned): Only trigger assert for
size if range checking is in force.
(convert_mpz_to_signed): Make non-static, rename to
(gfc_convert_mpz_to_signed).
(simplify_dshift): Use gfc_convert_mpz_to_signed.
(gfc_simplify_ibclr): Likewise.
(gfc_simplify_ibits): Likewise.
(gfc_simplify_ibset): Likewise.
(simplify_shift): Likewise.
(gfc_simplify_ishiftc): Likewise.
(gfc_simplify_maskr): Likewise.
(gfc_simplify_maskl): Likewise.
2014-03-27 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/59604
PR fortran/58003
* gfortran.dg/no_range_check_3.f90: New test.
From-SVN: r209836
2014-04-26 Jerry DeLisle <jvdelisle@gcc.gnu>
PR libfortran/52539
* io/list_read.c: Add uchar typedef. (push_char4): New function
to save kind=4 character. (next_char_utf8): New function to read
a single UTF-8 encoded character value. (read_chracter): Update
to use the new functions for reading UTF-8 strings.
(list_formatted_read_scalar): Update to handle list directed
reads of UTF-8 strings. (nml_read_obj): Likewise update for
UTF-8 strings in namelists.
* io/write.c (nml_write_obj): Add kind=4 character support for
namelist writes.
From-SVN: r209828
Parallel profiledbootstrap is supported on all maintained releases. So
just remove a misleading outdated sentence, that states the opposite,
from doc/install.texi.
2014-04-26 Markus Trippelsdorf <markus@trippelsdorf.de>
* doc/install.texi (Building with profile feedback): Remove
outdated sentence.
From-SVN: r209826
* go-gcc.cc: Include "cgraph.h" and "gimplify.h".
(Gcc_backend::return_statement): Push and pop function.
(Gcc_backend::label): Likewise.
(Gcc_backend::function_defer_statement): Likewise.
(Gcc_backend::switch_statement): Add function parameter.
(Gcc_backend::block): Don't permit function to be NULL.
(Gcc_backend::temporary_variable): Change go_assert to
gcc_assert.
(Gcc_backend::gc_root_variable): New function.
(Gcc_backend::write_global_definitions): New function.
From-SVN: r209819
(1) If a function contains a local typedef of an anonymous structure, GCC
will generate a typedef DIE in the function, where the typedef DIE points
to a structure_type DIE at the top level. That structure_type DIE, if
it's a non-POD, can contain ctor and dtor definitions. This causes an
assertion in should_move_die_to_comdat to fail, as we have up to now
assumed that this could never happen.
(2) With --std=c++11, a template parameter can refer to a local type defined
within a function. Because that local type doesn't qualify for its own
type unit, we copy it as an "unworthy" type into the type unit that refers
to it, but we copy too much, leading to a comdat type unit that contains a
DIE with subprogram definitions rather than declarations. These DIEs may
have DW_AT_low_pc/high_pc or DW_AT_ranges attributes, and consequently can
refer to range list entries that don't get emitted because they're not
marked when the compile unit is scanned, eventually causing an undefined
symbol at link time.
(3) When a class template instantiation is moved into a separate type unit,
it can bring along a lot of other referenced types into the type unit,
especially if the template is derived from another (large) type that
does not have an actually have a type definition in a type unit of its
own. When there are many instantiations of the same template, we get
a lot of duplication, and in the worst case (a template with several
parameters, instantiated multiple times along each dimension), GCC
can end up taking a long time and exhausting available memory.
This combinatorial explosion is being caused by copy_decls_walk, where
it finds a type DIE that is referenced by the type unit, but is not
itself a type unit, and copies a declaration for that type into the
type unit in order to resolve the reference within the type unit.
In the process, copy_decls_walk also copies all of the children of
that DIE. In the case of a base class with member function templates,
every one of the instantiated member functions is copied into every
type unit that references the base class.
gcc/
PR debug/60929
* dwarf2out.c (should_move_die_to_comdat): A type definition
can contain a subprogram definition, but don't move it to a
comdat unit.
(clone_as_declaration): Copy DW_AT_abstract_origin attribute.
(generate_skeleton_bottom_up): Remove DW_AT_object_pointer attribute
from original DIE.
(clone_tree_hash): Rename to...
(clone_tree_partial): ...this; change callers. Copy
DW_TAG_subprogram DIEs as declarations.
(copy_decls_walk): Don't copy children of a declaration into a
type unit.
gcc/testsuite/
PR debug/60929
* g++.dg/debug/dwarf2/dwarf4-nested.C: New test case.
* g++.dg/debug/dwarf2/dwarf4-typedef.C: Add
-fdebug-types-section flag.
From-SVN: r209812
[gcc]
2014-04-25 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/60930
* gimple-ssa-strength-reduction.c (create_mul_imm_cand): Reject
creating a multiply candidate by folding two constant
multiplicands when the result overflows.
[gcc/testsuite]
2014-04-25 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/60930
* gcc.dg/torture/pr60930.c: New test.
From-SVN: r209805
PR c/18079
c/
* c-decl.c (diagnose_mismatched_decls): Warn for mismatched
always_inline/noinline and hot/cold attributes.
c-family/
* c-common.c (handle_noinline_attribute): Warn if the attribute
conflicts with always_inline attribute.
(handle_always_inline_attribute): Warn if the attribute conflicts
with noinline attribute.
testsuite/
* gcc.dg/pr18079.c: New test.
* gcc.dg/pr18079-2.c: New test.
From-SVN: r209796
2014-04-25 Richard Biener <rguenther@suse.de>
PR ipa/60912
* tree-ssa-structalias.c (ipa_pta_execute): Compute direct
call stmt use/clobber sets during stmt walk instead of
walking the possibly incomplete set of caller edges.
* g++.dg/opt/pr60912.C: New testcase.
From-SVN: r209780
2014-04-25 Richard Biener <rguenther@suse.de>
PR ipa/60911
* passes.c (apply_ipa_transforms): Inline into only caller ...
(execute_one_pass): ... here. Properly bring in function
bodies for nodes we want to apply IPA transforms to.
* gcc.dg/lto/pr60911_0.c: New testcase.
From-SVN: r209779
PR go/60931
runtime: Fix garbage collector issue with non 4kB system page size
The go garbage collector tracks memory in terms of 4kB pages.
Most of the code checks getpagesize() at runtime and does the
right thing.
On a 64kB ppc64 box I see SEGVs in long running processes
which has been diagnosed as a bug in scavengelist.
scavengelist does a madvise(MADV_DONTNEED) without rounding
the arguments to the system page size. A strace of one of the
failures shows the problem:
madvise(0xc211030000, 4096, MADV_DONTNEED) = 0
The kernel rounds the length up to 64kB and we mark 60kB of
valid data as no longer needed.
Round start up to a system page and end down before calling
madvise.
From-SVN: r209777
2014-04-24 Cong Hou <congh@google.com>
PR tree-optimization/60896
* tree-vect-patterns.c (vect_recog_dot_prod_pattern): Pick up
all statements in PATTERN_DEF_SEQ in recognized widen-mult pattern.
(vect_mark_pattern_stmts): Set the def type of all statements in
PATTERN_DEF_SEQ as vect_internal_def.
2014-04-24 Cong Hou <congh@google.com>
PR tree-optimization/60896
* g++.dg/vect/pr60896.cc: New test.
From-SVN: r209773
Richard Biener
Jeff Law
Kyrylo Tkachov
Paolo Carlini
Eric Botcazou
GCC Administrator
Tim Shen
Richard Sandiford
Thomas Koenig
Jerry DeLisle
Markus Trippelsdorf
Tom de Vries
Uros Bizjak
Chris Manghane
Cary Coutant
H.J. Lu
Lars Gullik Bjønnes
Jiong Wang
Jonathan Wakely
Bill Schmidt
Jakub Jelinek
Marek Polacek
Radovan Obradovic
Marc Glisse
Rainer Orth
Ian Lance Taylor
Mike Stump
Cong Hou