gcc/
* doc/extend.texi (Common Function Attributes): Document that
no_instrument_function applies to -p and -pg, too.
* doc/invoke.texi (Instrumentation Options): Add cross-references
to docs for -p, -pg, and -finstrument-functions.
emsr [Sun, 18 Nov 2018 18:32:26 +0000 (18:32 +0000)]
2018-11-16 Michele Pezzutti <mpezz@tiscali.it>
Edward Smith-Rowland <3dw4rd@verizon.net>
PR libstdc++/83566 - cyl_bessel_j returns wrong result for x>1000
for high orders.
* include/tr1/bessel_function.tcc: Perform no fewer than nu/2 iterations
of the asymptotic series (nu is the Bessel order).
* testsuite/tr1/5_numerical_facilities/special_functions/
09_cyl_bessel_j/check_value.cc: Add tests at nu=100, 1000<=x<=2000.
* testsuite/tr1/5_numerical_facilities/special_functions/
11_cyl_neumann/check_value.cc: Ditto.
* testsuite/special_functions/08_cyl_bessel_j/check_value.cc: Ditto.
* testsuite/special_functions/10_cyl_neumann/check_value.cc: Ditto.
amodra [Sun, 18 Nov 2018 10:25:24 +0000 (10:25 +0000)]
Allow target to override gnu-user.h crti and crtn
Also give target access to the gnu-user.h LINK_GCC_C_SEQUENCE_SPEC.
* config/gnu-user.h (GNU_USER_TARGET_CRTI): Define.
(GNU_USER_TARGET_STARTFILE_SPEC): Use it here.
(GNU_USER_TARGET_CRTN): Define.
(GNU_USER_TARGET_ENDFILE_SPEC): Use it here.
(GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC): Define.
amodra [Sun, 18 Nov 2018 10:22:10 +0000 (10:22 +0000)]
Delete !HAVE_LD_PIE variants of startfile/endfile specs
The HAVE_LD_PIE variant doesn't contain anything that will break
linking when !HAVE_LD_PIE that isn't already broken if you choose to
build PIEs with a linker that doesn't support PIE. All this
HAVE_LD_PIE protects is the choice of different crt files, which is
more about libc capability than linker capability.
tkoenig [Sun, 18 Nov 2018 09:16:19 +0000 (09:16 +0000)]
2018-11-18 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/70260
* expr.c (gfc_check_assign): Reject assigning to an external
symbol.
(gfc_check_pointer_assign): Add suppress_type_test
argument. Insert line after if. A non-proc pointer can not point
to a constant. Only check types if suppress_type_test is false.
* gfortran.h (gfc_check_pointer_assign): Add optional
suppress_type_test argument.
* resolve.c (gfc_resolve_code): Move up gfc_check_pointer_assign
and give it the extra argument.
(resolve_fl_procedure): Set error on value for a function with
an inizializer.
2018-11-18 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/70260
* gfortran.dg/proc_ptr_result_5.f90: Add dg-error directive.
* gfortran.dg/protected_4.f90: Split line to allow for extra error.
* gfortran.dg/protected_6.f90: Likewise.
* gfortran.dg/assign_11.f90: New test.
* gfortran.dg/pointer_assign_12.f90: New test.
redi [Sat, 17 Nov 2018 23:35:44 +0000 (23:35 +0000)]
Implement std::pmr::synchronized_pool_resource
Define the thread-safe pool resource, using a shared_mutex to allow
multiple threads to concurrently allocate from thread-specific pools.
Define new weak symbols for the pthread_rwlock_t functions, to avoid
making libstdc++.so depend on libpthread.so
When the necessary Gthread support is absent only define the
feature-test macro to 1, rather than 201603. This is intended to imply
incomplete support, because everything except synchronized_pool_resource
works.
Implement std::pmr::synchronized_pool_resource
* config/abi/pre/gnu.ver: Add new symbols.
* include/std/memory_resource [_GLIBCXX_HAS_GTHREADS]
(__cpp_lib_memory_resource): Define to expected value, 201603.
(synchronized_pool_resource): New class.
[!_GLIBCXX_HAS_GTHREADS] (__cpp_lib_memory_resource): Define to 1.
* include/std/shared_mutex (__glibcxx_rwlock_rdlock)
(__glibcxx_rwlock_tryrdlock, __glibcxx_rwlock_wrlock)
(__glibcxx_rwlock_trywrlock, __glibcxx_rwlock_unlock)
(__glibcxx_rwlock_destroy, __glibcxx_rwlock_init)
(__glibcxx_rwlock_timedrdlock, __glibcxx_rwlock_timedwrlock): Define
weak symbols for POSIX rwlock functions.
(__shared_mutex_pthread): Use weak symbols.
* include/std/version (__cpp_lib_memory_resource): Define.
* src/c++17/memory_resource.cc [_GLIBCXX_HAS_GTHREADS]
(synchronized_pool_resource::_TPools): New class.
(destroy_TPools): New function for pthread_key_create destructor.
(synchronized_pool_resource::synchronized_pool_resource)
(synchronized_pool_resource::~synchronized_pool_resource)
(synchronized_pool_resource::release)
(synchronized_pool_resource::do_allocate)
(synchronized_pool_resource::do_deallocate): Define public members.
(synchronized_pool_resource::_M_thread_specific_pools)
(synchronized_pool_resource::_M_alloc_tpools)
(synchronized_pool_resource::_M_alloc_shared_tpools): Define private
members.
* testsuite/20_util/synchronized_pool_resource/allocate.cc: New test.
* testsuite/20_util/synchronized_pool_resource/cons.cc: New test.
* testsuite/20_util/synchronized_pool_resource/is_equal.cc: New test.
* testsuite/20_util/synchronized_pool_resource/multithreaded.cc: New
test.
* testsuite/20_util/synchronized_pool_resource/release.cc: New test.
* testsuite/performance/20_util/memory_resource/pools.cc: Add
multithreaded tests using pmr::synchronized_pool_resource.
wilson [Sat, 17 Nov 2018 23:31:01 +0000 (23:31 +0000)]
RISC-V: Fix epilogue unwind info with fp and single sp adjust.
gcc/
* config/riscv/riscv.c (epilogue_cfa_sp_offset): New.
(riscv_restore_reg): If restoring HARD_FRAME_POINTER_REGNUM, and
epilogue_cfa_sp_offset set, then add REG_CFA_DEF_CFA regnote.
(riscv_expand_epilogue): Initialize epilogue_cfa_sp_offset. Set it
to step2 if frame_pointer_needed and step1 is 0.
jakub [Sat, 17 Nov 2018 15:10:48 +0000 (15:10 +0000)]
PR tree-optimization/87546
* tree-vect-patterns.c (vect_look_through_possible_promotion): Add
min_precision variable, initially set it to orig_precision, only does
something if op_type's precision is <= min_precision and update
min_precision whenever calling set_op.
jakub [Sat, 17 Nov 2018 15:09:43 +0000 (15:09 +0000)]
PR rtl-optimization/88018
* cfgrtl.c (fixup_abnormal_edges): Guard moving insns to fallthru edge
on the presence of fallthru edge, rather than if it is a USE or not.
jozefl [Fri, 16 Nov 2018 23:53:30 +0000 (23:53 +0000)]
2018-11-16 Jozef Lawrynowicz <jozef.l@mittosystems.com>
PR target/87927
* target-def.h: Initialize TARGET_ASM_{,UN}ALIGNED_P{S,D,T}I_OP.
Add them to the TARGET_ASM_{,UN}ALIGNED_INT_OP structs.
* target.def: Enumerate TARGET_ASM_{,UN}ALIGNED_P{S,D,T}I_OP in
the byte_op hook.
* target.h: Add psi, pdi, pti to struct asm_int_op definition.
* targhooks.c (default_print_patchable_function_entry): Assert
asm_int_op does not return a NULL string.
* varasm.c (integer_asm_op): Return the op for a partial int type
when the requested size does not correspond to an integer type.
* config/msp430/msp430.c: Initialize TARGET_ASM_{,UN}ALIGNED_PSI_OP.
* doc/tm.texi: Regenerate.
jason [Fri, 16 Nov 2018 21:49:42 +0000 (21:49 +0000)]
Implement P0479R5, [[likely]] and [[unlikely]].
[[likely]] and [[unlikely]] are equivalent to the GNU hot/cold attributes,
except that they can be applied to arbitrary statements as well as labels;
this is most likely to be useful for marking if/else branches as likely or
unlikely. Conveniently, PREDICT_EXPR fits the bill nicely as a
representation.
I also had to fix marking case labels as hot/cold, which didn't work before.
Which then required me to force __attribute ((fallthrough)) to apply to the
statement rather than the label.
jakub [Fri, 16 Nov 2018 16:43:49 +0000 (16:43 +0000)]
PR rtl-optimization/87475
* cfgrtl.c (patch_jump_insn): Allow redirection failure for
CROSSING_JUMP_P insns.
(cfg_layout_redirect_edge_and_branch): Don't ICE if ret is NULL.
jakub [Fri, 16 Nov 2018 16:40:53 +0000 (16:40 +0000)]
PR middle-end/88032
* optabs.c (expand_binop): For op0_mode use GET_MODE (op0), unless it
is VOIDmode, in which case use int_mode. Similarly for op1_mode.
matmal01 [Fri, 16 Nov 2018 16:26:44 +0000 (16:26 +0000)]
When running the testsuite on boards that can't report an error status
DejaGNU uses a special wrapper to print the exit code on stdout and
parses stdout to find whether an execution failed or passed.
In testcases that use "freopen (..., ..., stdout)" this special line is
printed to the alternate location described in the freopen call and
DejaGNU can't find the error code.
This results in DejaGNU using a default return status of 2 and the test
failing.
This patch skips the two testcases that use freopen on stdout when
testing a board that requires this wrapper.
Testing done by running these two tests on arm-none-eabi cross build and
observing that they are unsupported.
gcc/testsuite/ChangeLog:
2018-11-16 Matthew Malcomson <matthew.malcomson@arm.com>
* gcc.c-torture/execute/printf-2.c: Skip on wrapped boards.
* gcc.c-torture/execute/user-printf.c: Likewise.
ebotcazou [Fri, 16 Nov 2018 16:25:12 +0000 (16:25 +0000)]
* tree-switch-conversion.h (switch_decision_tree::emit_case_nodes): Add
location_t parameter.
(switch_decision_tree::emit_cmp_and_jump_insns): Likewise.
(switch_decision_tree::do_jump_if_equal): Likewise.
* tree-switch-conversion.c (switch_decision_tree::emit): Pass location
of switch statement to emit_case_nodes.
(switch_decision_tree::emit_cmp_and_jump_insns): Add LOC parameter and
set it on the newly built GIMPLE comparison statement.
(switch_decision_tree::do_jump_if_equal): Likewise.
(switch_decision_tree::emit_case_nodes): Add LOC parameter and pass it
in calls to do_jump_if_equal as well as recursive calls.
ak [Fri, 16 Nov 2018 15:46:31 +0000 (15:46 +0000)]
Allow memory operands for PTWRITE
The earlier PTWRITE builtin definition was unnecessarily restrictive,
only allowing register input to PTWRITE. The instruction actually
supports memory operands too, so allow that too.
gcc/:
2018-11-16 Andi Kleen <ak@linux.intel.com>
* config/i386/i386.md: Allow memory operands to ptwrite.
nathan [Fri, 16 Nov 2018 15:01:55 +0000 (15:01 +0000)]
[PR c++/87269] Mark string operator overload in template defn.
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01458.html
PR c++/87269
* parser.c (lookup_literal_operator): Mark overload for keeping
when inside template. Refactor.
marxin [Fri, 16 Nov 2018 12:49:32 +0000 (12:49 +0000)]
Fix ICE in lto_symtab_merge_symbols_1 (PR lto/88004).
2018-11-16 Martin Liska <mliska@suse.cz>
PR lto/88004
* lto-symtab.c (lto_symtab_merge_symbols_1): Do not call
lto_symtab_symbol_p as it does checking of transparent alias.
These needs to be also merged in the function.
rguenth [Fri, 16 Nov 2018 12:20:05 +0000 (12:20 +0000)]
2018-11-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/88011
* tree-vrp.c (extract_range_from_binary_expr): Fix error in
replacing set_value_range_to_undefined and
set_value_range_to_varying with method calls.
with an extra subreg, which appears because pseudos, unlike hard
registers, can be accessed only using their natural mode.
This patch adds a special case for that. Also, it performs r*sbg
bit index computations during gcc run, so that expectations do not
depend on which concrete pattern was matched.
gcc/ChangeLog:
2018-11-16 Ilya Leoshkevich <iii@linux.ibm.com>
* config/s390/s390.md
(*r<noxa>sbg_<mode>_srl_bitmask): Do not delegate arithmetic to
assembler.
(*r<noxa>sbg_<mode>_sll): Likewise.
(*r<noxa>sbg_<mode>_srl): Likewise.
(*r<noxa>sbg_sidi_srl): New pattern.
gcc/testsuite/ChangeLog:
2018-11-16 Ilya Leoshkevich <iii@linux.ibm.com>
* gcc.target/s390/md/rXsbg_mode_sXl.c: Do not use arithmetic in
r{o,x}sbg expectations.
* gcc.target/s390/risbg-ll-2.c: Likewise.
hainque [Fri, 16 Nov 2018 09:23:22 +0000 (09:23 +0000)]
Allow target overrides of ctors/dtors support advertisement on VxWorks
2018-11-16 Jerome Lambourg <lambourg@adacore.com>
* config/vxworks.h (TARGET_VXWORKS_HAVE_CTORS_DTORS): New macro.
Default to TARGET_VXWORKS_RTP.
(SUPPORTS_INIT_PRIORITY): Use TARGET_VXWORKS_HAVE_CTORS_DTORS instead
of TARGET_VXWORKS_RTP.
* config/vxworksae.h: Also define TARGET_VXWORKS_HAVE_CTORS_DTORS.
* config/vxworks.c: Use TARGET_VXWORKS_HAVE_CTORS_DTORS instead
of TARGET_VXWORKS_RTP to set targetm.have_ctors_dtors.
msebor [Thu, 15 Nov 2018 22:53:57 +0000 (22:53 +0000)]
PR c++/87541 - ICE using a constant decl as an attribute alloc_size argument
PR c++/87542 - bogus error on attribute format with a named constant argument
gcc/ChangeLog:
PR c++/87541
PR c++/87542
* tree.c (type_argument_type): New function.
* tree.h (type_argument_type): Declare it.
* gcc/doc/extend.texi (alloc_align): Update and clarify.
(alloc_size, nonnull, sentinel): Same.
gcc/c-family/ChangeLog:
PR c++/87541
PR c++/87542
* c-attribs.c (positional_argument): New function.
(handle_alloc_size_attribute): Use it and simplify.
(handle_alloc_align_attribute): Same.
(handle_assume_aligned_attribute): Same.
(handle_nonnull_attribute): Same.
* c-common.c (check_function_arguments): Pass fntype to
check_function_format.
* c-common.h (check_function_format): Add an argument.
(PosArgFlags, positional_argument): Declare new type and function.
* c-format.c (decode_format_attr): Add arguments.
(check_format_string, get_constant): Same.
(convert_format_name_to_system_name): Adjust.
msebor [Thu, 15 Nov 2018 22:18:54 +0000 (22:18 +0000)]
PR c/83656 - missing -Wbuiltin-declaration-mismatch on declaration without prototype
gcc/c/ChangeLog:
PR c/83656
* c-decl.c (header_for_builtin_fn): Declare.
(diagnose_mismatched_decls): Diagnose declarations of built-in
functions without a prototype.
* c-typeck.c (maybe_warn_builtin_no_proto_arg): New function.
(convert_argument): Same.
(convert_arguments): Factor code out into convert_argument.
Detect mismatches between built-in formal arguments in calls
to built-in without prototype.
(build_conditional_expr): Same.
(type_or_builtin_type): New function.
(convert_for_assignment): Add argument. Conditionally issue
warnings instead of errors for mismatches.
nathan [Thu, 15 Nov 2018 19:54:25 +0000 (19:54 +0000)]
[PR c++/86246] ICE tsubst explicit operator call
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01405.html
PR c++/86246
PR c++/87989
* typeck.c (finish_class_member_access_expr): Conversion operator
to dependent type is dependent.
ams [Thu, 15 Nov 2018 17:14:15 +0000 (17:14 +0000)]
Handle vectors that don't fit in an integer.
GCN vector sizes range between 64 and 512 bytes, none of which have
correspondingly sized integer modes. This breaks a number of assumptions
throughout the compiler, but I don't really want to create modes just for this
purpose.
Instead, this patch fixes up the cases that I've found, so far, such that the
compiler tries something else, or fails to optimize, rather than just ICE.
2018-11-15 Andrew Stubbs <ams@codesourcery.com>
Kwok Cheung Yeung <kcy@codesourcery.com>
nathan [Thu, 15 Nov 2018 15:51:39 +0000 (15:51 +0000)]
[C++ DR 2336] virtual dtors, exception specs & abstract classes
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01389.html
DR 2336
* cp-tree.h (enum special_function_kind): Add sfk_virtual_destructor.
* method.c (type_has_trivial_fn): Add it.
(SFK_DTOR_P): Likewise.
(synthesized_method_base_walk): Don't check access of vbases of
abstract classes when sfk_virtual_destructor.
(synthesized_method_walk): Skip vbases of abstract classes except
when sfk_virtual_destructor.
(get_defaulted_eh_spec): Set sfk_virtual_destructor as needed.
dmalcolm [Thu, 15 Nov 2018 15:18:43 +0000 (15:18 +0000)]
doc/ux.texi: auto_diagnostic_group now does something
As of r266186, auto_diagnostic_group is now user-visible
(via -fdiagnostics-format=json), so update the diagnostic
guidelines accordingly.
gcc/ChangeLog:
* doc/ux.texi (Group logically-related diagnostics): Move
discussion of auto_diagnostic_group into this new subsection.
Give an example of where this grouping is used.
This patch implements a -fdiagnostics-format=json option which
converts the diagnostics to be output to stderr in a JSON format;
see the documentation in invoke.texi.
Logically-related diagnostics are nested at the JSON level, using
the auto_diagnostic_group mechanism.
gcc/ChangeLog:
PR other/19165
* Makefile.in (OBJS): Move json.o to...
(OBJS-libcommon): ...here and add diagnostic-format-json.o.
* common.opt (fdiagnostics-format=): New option.
(diagnostics_output_format): New enum.
* diagnostic-format-json.cc: New file.
* diagnostic.c (default_diagnostic_final_cb): New function, taken
from start of diagnostic_finish.
(diagnostic_initialize): Initialize final_cb to
default_diagnostic_final_cb.
(diagnostic_finish): Move "being treated as errors" messages to
default_diagnostic_final_cb. Call any final_cb.
(default_diagnostic_finalizer): Add diagnostic_t param.
(diagnostic_report_diagnostic): Pass "orig_diag_kind" to
diagnostic_finalizer callback.
* diagnostic.h (enum diagnostics_output_format): New enum.
(diagnostic_finalizer_fn): Reimplement, adding diagnostic_t param.
(struct diagnostic_context): Add "final_cb".
(default_diagnostic_finalizer): Add diagnostic_t param.
(diagnostic_output_format_init): New decl.
* doc/invoke.texi (-fdiagnostics-format): New option.
* dwarf2out.c (gen_producer_string): Ignore
OPT_fdiagnostics_format_.
* gcc.c (driver_handle_option): Handle OPT_fdiagnostics_format_.
* lto-wrapper.c (append_diag_options): Ignore it.
* opts.c (common_handle_option): Handle it.
rguenth [Thu, 15 Nov 2018 13:42:13 +0000 (13:42 +0000)]
2018-11-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/88031
* tree-vect-loop.c (vectorizable_reduction): Move check
for multiple types earlier so we get the expected dump.
Simplify calls to vectorizable_condition.
* tree-vect-stmts.h (vectorizable_condition): Update prototype.
* tree-vect-stmts.c (vectorizable_condition): Instead of
reduc_def and reduc_index take just a flag. Simplify
code-generation now that we can rely on the defs being set up.
(vectorizable_comparison): Remove unused argument.
nathan [Thu, 15 Nov 2018 13:22:15 +0000 (13:22 +0000)]
[C++ DR 2336] Clean up synth walkers first
https://gcc.gnu.org/ml/gcc-patches/2018-11/msg01376.html
* cp-tree.h (enum special_function_kind): Reorder and comment.
* method.c (SFK_CTOR_P, SFK_DTOR_P, SFK_ASSIGN_P, SFK_COPY_P)
(SFK_MOVE_P): New predicates.
(walk_field_subobs, synthesized_method_base_walk): Drop
copy_arg_p, move_p, assign_p args. Use new SFK predicates. Order
parameters consistently.
(synthesized_method_walk): Drop ctor_p, copy_arg_p, move_p,
assign_p calculations. Use new SFK predicates. Adjust calls to
worker functions.
rguenth [Thu, 15 Nov 2018 10:42:15 +0000 (10:42 +0000)]
2018-11-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/88030
* tree-complex.c (need_eh_cleanup): New global.
(update_complex_assignment): Mark blocks that need EH update.
(expand_complex_comparison): Likewise.
(tree_lower_complex): Allocate and deallocate need_eh_cleanup,
perform EH cleanup and schedule CFG cleanup if that did anything.
jakub [Thu, 15 Nov 2018 08:47:21 +0000 (08:47 +0000)]
PR rtl-optimization/88018
* cfgrtl.c (fixup_abnormal_edges): Guard moving insns to fallthru edge
on the presence of fallthru edge, rather than if it is a USE or not.
gcc/
* doc/invoke.texi (Optimize Options): Remove bad example about
interaction between -flto and -O. Replace it with a note that
you need to compile with -O and not just link. Copy-edit -flto
discussion to reduce verbiage and improve flow.
redi [Thu, 15 Nov 2018 00:04:19 +0000 (00:04 +0000)]
Optimize pool resource allocation
A recent change caused a performance regression. This restores the
previous performance and adds a performance test.
* scripts/check_performance: Allow tests to choose a -std flag.
* src/c++17/memory_resource.cc (bitset::get_first_unset()): Use local
variables of the right types. Call update_next_word() unconditionally.
* testsuite/20_util/unsynchronized_pool_resource/cons.cc: New test.
* testsuite/performance/20_util/memory_resource/pools.cc: New test.
* testsuite/util/testsuite_performance.h (time_counter): Allow
timer to be restarted.
gcc/
* doc/invoke.texi (Optimize Options): Clarify that -O0 and -Og
also suppress many optimizations. Alphabetize option lists for
-O1, -O2, and -Os. Add list of options disabled with -Og, and
correct documentation for those options to say that.
* opts.c (default_options_table): Sort table by level and option
name, to make it easier to correlate to the manual.
jakub [Wed, 14 Nov 2018 16:46:06 +0000 (16:46 +0000)]
P1236R1 - Signed integers are two's complement
gcc/cp/
* constexpr.c (cxx_eval_check_shift_p): Disable the signed LSHIFT_EXPR
checks for c++2a.
gcc/c-family/
* c-warn.c (maybe_warn_shift_overflow): Don't warn for c++2a.
* c-ubsan.c (ubsan_instrument_shift): Make signed shifts
with in-range second operand well defined for -std=c++2a.
gcc/
* doc/invoke.texi (Wshift-overflow): Adjust documentation for
c++2a.
gcc/testsuite/
* g++.dg/cpp2a/constexpr-shift1.C: New test.
* g++.dg/warn/permissive-1.C (enum A, enum D): Don't expect
diagnostics here for c++2a.
* g++.dg/cpp0x/constexpr-shift1.C (fn3, i3, fn4, i4): Don't expect
diagnostics here for c++2a.
* g++.dg/cpp0x/constexpr-60049.C (f3, x3, y3): Likewise.
* g++.dg/ubsan/cxx11-shift-1.C (main): Add some further tests.
* g++.dg/ubsan/cxx11-shift-2.C (main): Likewise.
* g++.dg/ubsan/cxx2a-shift-1.C: New test.
* g++.dg/ubsan/cxx2a-shift-2.C: New test.
redi [Wed, 14 Nov 2018 14:25:00 +0000 (14:25 +0000)]
Add missing dir to create_testsuite_files script
* scripts/create_testsuite_files: Add special_functions to the list
of directories to search. Add comment referring to conformance.exp.
* testsuite/libstdc++-dg/conformance.exp: Add comment referring
to create_testsuite_files.
iii [Wed, 14 Nov 2018 13:07:13 +0000 (13:07 +0000)]
[PATCH 1/2] S/390: Disable 3 global-array-* tests for 31-bit mode
These tests rely on larl->movdi merge, which is not implemented for
31-bit mode.
gcc/testsuite/ChangeLog:
2018-11-14 Ilya Leoshkevich <iii@linux.ibm.com>
* gcc.target/s390/global-array-almost-huge-element.c: Run only
in 64-bit mode.
* gcc.target/s390/global-array-almost-negative-huge-element.c:
Likewise.
* gcc.target/s390/global-array-even-element.c: Likewise.
wilco [Wed, 14 Nov 2018 12:45:29 +0000 (12:45 +0000)]
Simplify floating point comparisons
This patch implements some of the optimizations discussed in PR71026.
Simplify (C / x >= 0.0) into x >= 0.0 with -funsafe-math-optimizations
(since C / x can underflow to zero if x is huge, it's not safe otherwise).
If C is negative the comparison is reversed.
Simplify (x * C1) > C2 into x > (C2 / C1) with -funsafe-math-optimizations.
If C1 is negative the comparison is reversed.
gcc/
PR 71026/tree-optimization
* match.pd: Simplify floating point comparisons.
gcc/testsuite/
PR 71026/tree-optimization
* gcc.dg/div-cmp-1.c: New test.
* gcc.dg/div-cmp-2.c: New test.
jakub [Wed, 14 Nov 2018 12:38:20 +0000 (12:38 +0000)]
PR other/88007
* c-common.c (parse_optimize_options): Allocate option string from
opts_obstack rather than as GC memory. Move the allocation after
warning for invalid option.
This is due to Combine merging a DUP instruction with either a load
or MLA - we can't force it to prefer one over the other. However the
generated vector loop is fast either way since it generates MLA and
merges the DUP either with a load or MLA. So relax the conditions
slightly and check we still generate MLA and there is no DUP or FMOV.
projects / thirdparty / gcc.git / log
