2018-12-21  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/87881
	* expr.c (find_inquiry_ref): Loop through the inquiry refs in
	case there are two of them.
	(simplify_ref_chain): Return true after a successful call to
	find_inquiry_ref.

2018-12-21  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/87881
	* gfortran.dg/inquiry_part_ref_4.f90: New test.

From-SVN: r267337

gcc/ChangeLog:

2018-12-21  Andreas Krebbel  <krebbel@linux.ibm.com>

	* config/s390/vector.md ("floatv2div2df2", "floatunsv2div2df2")
	("fix_truncv2dfv2di2", "fixuns_truncv2dfv2di2"): New pattern
	definitions.

gcc/testsuite/ChangeLog:

2018-12-21  Andreas Krebbel  <krebbel@linux.ibm.com>

	* gcc.target/s390/vector/fp-signedint-convert-1.c: New test.
	* gcc.target/s390/vector/fp-unsignedint-convert-1.c: New test.

From-SVN: r267336

        * gcc.target/i386/pr88418.c (dg-options): Add -mno-avx.

From-SVN: r267334

2018-12-21  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    * MAINTAINERS (Write After Approval): Update my maintainer address.

From-SVN: r267330

From-SVN: r267329

	PR rtl-optimization/87727
	* combine.c (cant_combine_insn_p): On a LEAF_REGISTERS target, combine
	again moves from leaf hard registers.

	* final.c (final_scan_insn_1) <NOTE_INSN_INLINE_ENTRY>: Minor tweak.

From-SVN: r267328

	PR target/88522
	* config/i386/sse.md (*avx512pf_gatherpf<mode>sf_mask,
	*avx512pf_gatherpf<mode>df_mask, *avx512pf_scatterpf<mode>sf_mask,
	*avx512pf_scatterpf<mode>df_mask): Use %X5 instead of %5 for
	-masm=intel.
	(gatherq_mode): Remove mode iterator.
	(*avx512f_gathersi<mode>, *avx512f_gathersi<mode>_2): Use X instead
	of <xtg_mode>.
	(*avx512f_gatherdi<mode>): Use X instead of <gatherq_mode>.
	(*avx512f_gatherdi<mode>_2, *avx512f_scattersi<mode>,
	*avx512f_scatterdi<mode>): Use %X5 for -masm=intel.

From-SVN: r267327

re PR rtl-optimization/88563 (wrong code with -O2 -fno-code-hoisting -fno-tree-ccp -fno-tree-dominator-opts -fno-tree-forwprop -fno-tree-fre -fno-tree-pre -fno-tree-vrp)

	PR rtl-optimization/88563
	* expr.c (expand_expr_real_2) <case WIDEN_MULT_EXPR>: Swap innermode
	and mode arguments to convert_modes.  Likewise swap mode and word_mode
	arguments.  Handle both arguments with VOIDmode before convert_modes
	of one of them.  Formatting fixes.

	* gcc.dg/pr88563.c: New test.

From-SVN: r267326

	PR target/88556
	* internal-fn.def (COSH): New.
	(SINH): Ditto.
	(TANH): Ditto.
	* optabs.def (cosh_optab): New.
	(sinh_optab): Ditto.
	(tanh_optab): Ditto.
	* config/i386/i386-protos.h (ix86_emit_i387_sinh): New prototype.
	(ix86_emit_i387_cosh): Ditto.
	(ix86_emit_i387_tanh): Ditto.
	* config/i386/i386.c (ix86_emit_i387_sinh): New function.
	(ix86_emit_i387_cosh): Ditto.
	(ix86_emit_i387_tanh): Ditto.
	* config/i386/i386.md (sinhxf2): New expander.
	(sinh<mode>2):	Ditto.
	(coshxf2): Ditto.
	(cosh<mode>2): Ditto.
	(tanhxf2): Ditto.
	(tanh<mode>2): Ditto.

From-SVN: r267325

	PR c++/87125
	* g++.dg/cpp0x/pr87125.C: New test.

From-SVN: r267324

On some version of dejagnu, options in RUNTESTFLAGS are appended to the
command-line and thus any -mfloat-abi=softfp or -mfloat-abi=hard in
there overwrite the -mfloat-abi=soft in the dg-options for
size-optimization-ieee-* tests. Test is still run though because
arm_soft_ok returns true if -mfloat-abi=soft is accepted, even if the
file is not compiled for softfloat due to a later -mfloat-abi on the
command line.

This patch adds a dg-skip-if to those tests to ensure they are not run
in softfp or hard mode.

2018-12-21  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    gcc/testsuite/
    * gcc.target/arm/size-optimization-ieee-1.c: Skip if passing
    -mfloat-abi=softfp or -mfloat-abi=hard.
    * gcc.target/arm/size-optimization-ieee-2.c: Likewise.
    * gcc.target/arm/size-optimization-ieee-3.c: Likewise.

From-SVN: r267323

	PR target/88547
	* config/i386/i386.c (ix86_expand_int_sse_cmp): Optimize
	x > y ? 0 : -1 into min (x, y) == x ? -1 : 0.

	* gcc.target/i386/pr88547-1.c: Expect only 2 knotb and 2 knotw
	insns instead of 4, check for vpminud, vpminuq and no vpsubd or
	vpsubq.
	* gcc.target/i386/sse2-pr88547-1.c: New test.
	* gcc.target/i386/sse2-pr88547-2.c: New test.
	* gcc.target/i386/sse4_1-pr88547-1.c: New test.
	* gcc.target/i386/sse4_1-pr88547-2.c: New test.
	* gcc.target/i386/avx2-pr88547-1.c: New test.
	* gcc.target/i386/avx2-pr88547-2.c: New test.
	* gcc.target/i386/avx512f-pr88547-2.c: New test.
	* gcc.target/i386/avx512vl-pr88547-1.c: New test.
	* gcc.target/i386/avx512vl-pr88547-2.c: New test.
	* gcc.target/i386/avx512vl-pr88547-3.c: New test.
	* gcc.target/i386/avx512f_cond_move.c (y): Change from unsigned int
	array to int array.

From-SVN: r267322

They are no different from their VAESENC{,LAST} counterparts in this
regard.

From-SVN: r267321

Introduce @name as a means to specify alternate multilib profiles as
arguments to --with-multilib-list.

So far this is only implemented for ARM.


for  gcc/ChangeLog

	* config.gcc (tmake_file): Add name to tmake_file for
        each @name in --with-multilib-list on arm-*-* targets.
	* doc/install.texi (with-multilib-list): Document it.

From-SVN: r267320

	* pt.c (convert_nontype_argument): If the expr is a PTRMEM_CST, also
	check if the type we're converting it to is TYPE_PTRMEM_P.

	* g++.dg/cpp0x/ptrmem-cst-arg1.C: Tweak dg-error.
	* g++.dg/cpp2a/nontype-class10.C: New test.
	* g++.dg/template/pr54858.C: Tweak dg-error.

From-SVN: r267319

tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Use DR_TARGET_ALIGNMENT on dr_info rather than dr.

	* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Use
	DR_TARGET_ALIGNMENT on dr_info rather than dr.  Spelling fixes.

From-SVN: r267318

From-SVN: r267317

tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Don't do versioning for data accesses with misaligned step.

2018-12-20  Joern Rennecke  <joern.rennecke@riscy-ip.com>

        * tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Don't do
        versioning for data accesses with misaligned step.

From-SVN: r267314

When address of packed member of struct or union is taken, it may result
in an unaligned pointer value.  This patch adds -Waddress-of-packed-member
to check alignment at pointer assignment and warn unaligned address as
well as unaligned pointer:

$ cat x.i
struct pair_t
{
  char c;
  int i;
} __attribute__ ((packed));

extern struct pair_t p;
int *addr = &p.i;
$ gcc -O2 -S x.i
x.i:8:13: warning: taking address of packed member of ‘struct pair_t’ may result in an unaligned pointer value [-Waddress-of-packed-member]
8 | int *addr = &p.i;
  |             ^

$ cat c.i
struct B { int i; };
struct C { struct B b; } __attribute__ ((packed));

long* g8 (struct C *p) { return p; }
$ gcc -O2 -S c.i -Wno-incompatible-pointer-types
c.i: In function ‘g8’:
c.i:4:18: warning: converting a packed ‘struct C *’ pointer (alignment 1) to ‘long int *’ (alignment 8) may may result in an unaligned pointer value [-Waddress-of-packed-member]
4 | long* g8 (struct C *p) { return p; }
  |                  ^
c.i:2:8: note: defined here
2 | struct C { struct B b; } __attribute__ ((packed));
  |        ^
$

This warning is enabled by default.  Since read_encoded_value_with_base
in unwind-pe.h has

  union unaligned
    {
      void *ptr;
      unsigned u2 __attribute__ ((mode (HI)));
      unsigned u4 __attribute__ ((mode (SI)));
      unsigned u8 __attribute__ ((mode (DI)));
      signed s2 __attribute__ ((mode (HI)));
      signed s4 __attribute__ ((mode (SI)));
      signed s8 __attribute__ ((mode (DI)));
    } __attribute__((__packed__));
  _Unwind_Internal_Ptr result;

and GCC warns:

gcc/libgcc/unwind-pe.h:210:37: warning: taking address of packed member of 'union unaligned' may result in an unaligned pointer value [-Waddress-of-packed-member]
    result = (_Unwind_Internal_Ptr) u->ptr;
                                    ^
we need to add GCC pragma to ignore -Waddress-of-packed-member.

gcc/

	PR c/51628
	* doc/invoke.texi: Document -Wno-address-of-packed-member.

gcc/c-family/

	PR c/51628
	* c-common.h (warn_for_address_or_pointer_of_packed_member): New.
	* c-warn.c (check_alignment_of_packed_member): New function.
	(check_address_of_packed_member): Likewise.
	(check_and_warn_address_of_packed_member): Likewise.
	(warn_for_address_or_pointer_of_packed_member): Likewise.
	* c.opt: Add -Wno-address-of-packed-member.

gcc/c/

	PR c/51628
	* c-typeck.c (convert_for_assignment): Call
	warn_for_address_or_pointer_of_packed_member.

gcc/cp/

	PR c/51628
	* call.c (convert_for_arg_passing): Call
	warn_for_address_or_pointer_of_packed_member.
	* typeck.c (convert_for_assignment): Likewise.

gcc/testsuite/

	PR c/51628
	* c-c++-common/pr51628-1.c: New test.
	* c-c++-common/pr51628-2.c: Likewise.
	* c-c++-common/pr51628-3.c: Likewise.
	* c-c++-common/pr51628-4.c: Likewise.
	* c-c++-common/pr51628-5.c: Likewise.
	* c-c++-common/pr51628-6.c: Likewise.
	* c-c++-common/pr51628-7.c: Likewise.
	* c-c++-common/pr51628-8.c: Likewise.
	* c-c++-common/pr51628-9.c: Likewise.
	* c-c++-common/pr51628-10.c: Likewise.
	* c-c++-common/pr51628-11.c: Likewise.
	* c-c++-common/pr51628-12.c: Likewise.
	* c-c++-common/pr51628-13.c: Likewise.
	* c-c++-common/pr51628-14.c: Likewise.
	* c-c++-common/pr51628-15.c: Likewise.
	* c-c++-common/pr51628-26.c: Likewise.
	* c-c++-common/pr51628-27.c: Likewise.
	* c-c++-common/pr51628-28.c: Likewise.
	* c-c++-common/pr51628-29.c: Likewise.
	* c-c++-common/pr51628-30.c: Likewise.
	* c-c++-common/pr51628-31.c: Likewise.
	* c-c++-common/pr51628-32.c: Likewise.
	* gcc.dg/pr51628-17.c: Likewise.
	* gcc.dg/pr51628-18.c: Likewise.
	* gcc.dg/pr51628-19.c: Likewise.
	* gcc.dg/pr51628-20.c: Likewise.
	* gcc.dg/pr51628-21.c: Likewise.
	* gcc.dg/pr51628-22.c: Likewise.
	* gcc.dg/pr51628-23.c: Likewise.
	* gcc.dg/pr51628-24.c: Likewise.
	* gcc.dg/pr51628-25.c: Likewise.
	* c-c++-common/asan/misalign-1.c: Add
	-Wno-address-of-packed-member.
	* c-c++-common/asan/misalign-2.c: Likewise.
	* c-c++-common/ubsan/align-2.c: Likewise.
	* c-c++-common/ubsan/align-4.c: Likewise.
	* c-c++-common/ubsan/align-6.c: Likewise.
	* c-c++-common/ubsan/align-7.c: Likewise.
	* c-c++-common/ubsan/align-8.c: Likewise.
	* c-c++-common/ubsan/align-10.c: Likewise.
	* g++.dg/ubsan/align-2.C: Likewise.
	* gcc.target/i386/avx512bw-vmovdqu16-2.c: Likewise.
	* gcc.target/i386/avx512f-vmovdqu32-2.c: Likewise.
	* gcc.target/i386/avx512f-vmovdqu64-2.c: Likewise.
	* gcc.target/i386/avx512vl-vmovdqu16-2.c: Likewise.
	* gcc.target/i386/avx512vl-vmovdqu32-2.c: Likewise.
	* gcc.target/i386/avx512vl-vmovdqu64-2.c: Likewise.

libgcc/

	* unwind-pe.h (read_encoded_value_with_base): Add GCC pragma
	to ignore -Waddress-of-packed-member.

From-SVN: r267313

2018-12-20  Steven G. Kargl  <kargl@gcc.gnu.org>

	* libgfortran/ieee/ieee_arithmetic.F90: Re-organize file to 
	eliminate #ifdef ... #endif.  No functional change.

From-SVN: r267312

	* testsuite/27_io/filesystem/operations/proximate.cc: Fix test for
	MinGW.
	* testsuite/27_io/filesystem/path/append/source.cc: Likewise.
	* testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.

From-SVN: r267308

2018-12-20  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/88457
	* ira-color.c (fast_allocation): Choose the best cost hard reg.

2018-12-20  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/88457
	* ira-color.c (fast_allocation): Choose the best cost hard reg.

From-SVN: r267307

	PR c++/88180
	* parser.c (cp_parser_class_specifier_1): If
	cp_parser_check_type_definition fails, skip default arguments, NSDMIs,
	etc. like for erroneous template args.

	* g++.dg/parse/pr88180.C: New test.
	* g++.dg/pr85039-1.C: Don't expect diagnostics inside of the type
	definition's NSDMIs.

From-SVN: r267306

	* cp-tree.h (cp_fully_fold_init): Declare.
	* cp-gimplify.c (cp_fully_fold_init): New function.
	* typeck2.c (split_nonconstant_init, store_init_value): Use it
	instead of cp_fully_fold.

From-SVN: r267305

For some reason we missed ABS out of the list of supported integer
operations when adding the SVE port initially.

2018-12-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/iterators.md (SVE_INT_UNARY, fp_int_op): Add abs.
	(SVE_FP_UNARY): Sort.

gcc/testsuite/
	* gcc.target/aarch64/pr64946.c: Force nosve.
	* gcc.target/aarch64/ssadv16qi.c: Likewise.
	* gcc.target/aarch64/usadv16qi.c: Likewise.
	* gcc.target/aarch64/vect-abs-compile.c: Likewise.
	* gcc.target/aarch64/sve/abs_1.c: New test.

From-SVN: r267304

This patch fixes a cut-&-pasto in the (match_dup 4) version of
"cond_<SVE_COND_FP_TERNARY:optab><SVE_F:mode>".  (It's a shame
that there's so much cut-&-paste in these patterns, but it's hard
to avoid without more infrastructure.)

2018-12-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/aarch64-sve.md (*cond_<optab><mode>_4): Use
	sve_fmla_op rather than sve_fmad_op for the movprfx alternative.

gcc/testsuite/
	* gcc.target/aarch64/sve/fmla_2.c: New test.
	* gcc.target/aarch64/sve/fmla_2_run.c: Likewise

From-SVN: r267303

PR tree-optimization/84053 - missing -Warray-bounds accessing a local array across inlined function boundaries

gcc/testsuite/ChangeLog:
	* gcc.dg/Warray-bounds-36.c: New test.

From-SVN: r267302

gcc/c-family/ChangeLog:
	PR c++/87504
	* c-warn.c (get_outermost_macro_expansion): New function.
	(spelled_the_same_p): Use it to unwind the macro expansions, and
	compare the outermost macro in each nested expansion, rather than
	the innermost.

gcc/testsuite/ChangeLog:
	PR c++/87504
	* c-c++-common/Wtautological-compare-8.c: New test.

From-SVN: r267299

2018-12-20  Martin Jambor  <mjambor@suse.cz>

	PR ipa/88214
	* tree-ssa-alias.c (ao_ref_init_from_ptr_and_size): Assert that
	ptr is a pointer.

From-SVN: r267298

	* testsuite/27_io/filesystem/directory_entry/lwg3171.cc: New test
	(missed from previous commit).

From-SVN: r267297

re PR tree-optimization/84362 (Auto-vectorization regression when accessing member variable through getter/accessor)

2018-12-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84362
	* tree-ssa-loop-im.c: Include alias.h, builtins.h and tree-dfa.h.
	(struct im_mem_ref): add ref_canonical flag.
	(struct mem_ref_hasher): Use ao_ref as compare_type.
	(mem_ref_hasher::equal): Adjust and add variant comparing ao_ref
	parts.
	(mem_ref_alloc): Take ao_ref parameter, initialize ref_canonical
	member.
	(gather_mem_refs_stmt): Set up ao_ref early and do the lookup
	using it.  If we have non-equal refs canonicalize the one
	in the hashtable used for insertion.
	(tree_ssa_lim_initialize): Adjust.

	* g++.dg/vect/pr84362.cc: New testcase.

From-SVN: r267296

From-SVN: r267294

	PR target/88547
	* config/i386/i386.c (ix86_expand_sse_movcc): For maskcmp, try to
	emit vpmovm2? instruction perhaps after knot?.  Reorganize code
	so that it doesn't have to test !maskcmp in almost every conditional.

	* gcc.target/i386/pr88547-1.c: New test.

From-SVN: r267293

svn r266496, git commit ab6b1bb456f broke non-linux powerpc builds
due to GNU_USER_DYNAMIC_LINKER being undefined.

	* config/rs6000/sysv4.h (GNU_USER_DYNAMIC_LINKER): Define.

From-SVN: r267292

From-SVN: r267291

2018-12-19  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/87992
	* resolve.c (resolve_fl_variable): Avoid a NULL pointer.

2018-12-19  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/87992
	* gfortran.dg/pr87992.f90: New test.

From-SVN: r267288

2018-12-19  Andreas Tobler  <andreast@gcc.gnu.org>

	* config.gcc: Enable TARGET_DEFAULT_ASYNC_UNWIND_TABLES on
	aarch64*-*-freebsd*

From-SVN: r267287

	* config/i386/i386.md (SWI1248_AVX512BWDQ_64): Rename from
	SWI1248_AVX512BWDQ2_64.  Unconditionally enable HImode.
	(*cmp<mode>_ccz_1): Emit kortest instead of ktest insn.
	Use SWI1248_AVX512BWDQ_64 mode iterator and enable only for
	TARGET_AVX512F.

testsuite/ChangeLog:

	* gcc.target/i386/avx512dq-pr82855.c: Update scan-assembler pattern.

From-SVN: r267286

	* doc/xml/manual/abi.xml: Add missing word.

From-SVN: r267285

Softfloat single precision and double precision floating-point
multiplication routines in libgcc share some code with the
floating-point division of their corresponding precision. As the code
is structured now, this leads to *all* division code being pulled in an
executable in softfloat mode even if only multiplication is
performed.

This patch create some new LIB1ASMFUNCS macros to also build files with
just the multiplication and shared code as weak symbols. By putting
these earlier in the static library, they can then be picked up when
only multiplication is used and they are overriden by the global
definition in the existing file containing both multiplication and
division code when division is needed.

The patch also removes changes made to the FUNC_START and ARM_FUNC_START
macros in r218124 since the intent was to put multiplication and
division code into their own section in a later patch to achieve the
same size optimization. That approach relied on specific section layout
to ensure multiplication and division were not too far from the shared
bit of code in order to the branches to be within range. Due to lack of
guarantee regarding section layout, in particular with all the
possibility of linker scripts, this approach was chosen instead. This
patch keeps the two testcases that were posted by Tony Wang on the mailing
list to implement this approach and adds a new one.

2018-12-19  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    libgcc/
    * /config/arm/lib1funcs.S (FUNC_START): Remove unused sp_section
    parameter and corresponding code.
    (ARM_FUNC_START): Likewise in both definitions.
    Also update footer comment about condition that need to match with
    gcc/config/arm/elf.h to also include libgcc/config/arm/t-arm.
    * config/arm/ieee754-df.S (muldf3): Also build it if L_arm_muldf3 is
    defined.  Weakly define it in this case.
    * config/arm/ieee754-sf.S (mulsf3): Likewise with L_arm_mulsf3.
    * config/arm/t-elf (LIB1ASMFUNCS): Build _arm_muldf3.o and
    _arm_mulsf3.o before muldiv versions if targeting Thumb-1 only. Add
    comment to keep condition in sync with the one in
    libgcc/config/arm/lib1funcs.S and gcc/config/arm/elf.h.

    gcc/
    * config/arm/elf.h: Update comment about condition that need to
    match with libgcc/config/arm/lib1funcs.S to also include
    libgcc/config/arm/t-arm.
    * doc/sourcebuild.texi (output-exists, output-exists-not): Rename
    subsubsection these directives are in to "Check for output files".
    Move scan-symbol to that section and add to it new scan-symbol-not
    directive.

2018-12-19  Tony Wang  <tony.wang@arm.com>
	    Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    gcc/testsuite/
    * lib/lto.exp (lto-execute): Define output_file and testname_with_flags
    to same value as execname.
    (scan-symbol): Move and rename to ...
    * lib/gcc-dg.exp (scan-symbol-common): This.  Adapt into a
    helper function returning true or false if a symbol is present.
    (scan-symbol): New procedure.
    (scan-symbol-not): Likewise.
    * gcc.target/arm/size-optimization-ieee-1.c: New testcase.
    * gcc.target/arm/size-optimization-ieee-2.c: Likewise.
    * gcc.target/arm/size-optimization-ieee-3.c: Likewise.

From-SVN: r267282