From-SVN: r259683

	* config/i386/i386.md ("isa" attribute): Add x64_sse2.
	("enabled" attribute): Handle "isa" attribute.
	(*movdi_internal): Substitute Yi and Yj constraint with x
	and Ym and Yn constraint with y constraint.  Update "isa"
	attribute and set "preferred_for_speed" attribute from
	TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC for updated alternatives.
	(*movsi_internal): Ditto.
	(*movdf_internal): Ditto.
	(*movsf_internal): Ditto.
	(*zero_extendsidi2): Ditto.
	* config/i386/sse.md (vec_set<mode>_0): Ditto.
	(sse2_loadld): Ditto.
	(*vec_extract<ssevecmodelower>_0): Ditto.
	(*vec_extractv4si_0_zext_sse4): Ditto.
	(vec_concatv2di): Ditto.
	(*vec_dup<mode>): Ditto.
	* config/i386/mmx.md (*mov<mode>_internal): Ditto.
	* config/i386/constraints.md (Yi): Remove.
	(Yj): Remove.
	(Ym): Remove.
	(Yn): Remove.

From-SVN: r259682

https://gcc.gnu.org/ml/gcc-patches/2018-04/msg01173.html
	* dumpfile.c (dump_open): New.
	(dump_open_alternate_stream, dump_start, dump_begin): Call it.
	(dump_finish): Detect stdio/stderr by value not name.

From-SVN: r259681

	* doc/invoke.texi (-Wreturn-type): Document default status for C++.

From-SVN: r259679

2018-04-26  Tom de Vries  <tom@codesourcery.com>

	PR libgomp/84020
	* plugin/cuda/cuda.h (CUjit_option): Add CU_JIT_OPTIMIZATION_LEVEL.
	* plugin/plugin-nvptx.c (_GNU_SOURCE): Define.
	(process_GOMP_NVPTX_JIT): New function.
	(link_ptx): Use process_GOMP_NVPTX_JIT.

From-SVN: r259678

2018-04-26  Tom de Vries  <tom@codesourcery.com>

	PR target/84952
	* config/nvptx/nvptx.c (verify_neutering_jumps)
	(verify_neutering_labels): New function
	(nvptx_single): Use verify_neutering_jumps and verify_neutering_labels.

From-SVN: r259677

2018-04-26  Tom de Vries  <tom@codesourcery.com>

	PR target/84025
	* config/nvptx/nvptx.c (needs_neutering_p): New function.
	(nvptx_single): Use needs_neutering_p to skip over insns that do not
	need neutering.

From-SVN: r259676

2018-04-26  Richard Biener <rguenther@suse.de>
	    Tom de Vries  <tom@codesourcery.com>

	PR lto/85422
	* lto-streamer-out.c (output_function): Fixup loops if required to match
	discovery done in the reader.

	* testsuite/libgomp.oacc-c-c++-common/pr85422.c: New test.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r259675

2018-04-26  Tom de Vries  <tom@codesourcery.com>

	PR target/85519
	* testsuite/libgomp.fortran/examples-4/declare_target-1.f90: Reduce
	recursion depth from 25 to 23.
	* testsuite/libgomp.fortran/examples-4/declare_target-2.f90: Same.

From-SVN: r259674

2018-04-26  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/85116
	* tree-ssa-loop-ch.c (do_while_loop_p): A do-while loop should
	have a loop exit from the single latch predecessor.  Remove
	case of header with just condition.
	(ch_base::copy_headers): Exclude infinite loops from any
	processing.
	(pass_ch::execute): Record exits.

	* gcc.dg/tree-ssa/copy-headers-2.c: New testcase.
	* gcc.dg/tree-ssa/copy-headers-3.c: Likewise.
	* gcc.dg/tree-ssa/copy-headers-4.c: Likewise.
	* gcc.dg/tree-ssa/loadpre6.c: Adjust.

From-SVN: r259672

2018-04-26  Richard Biener  <rguenther@suse.de>

	* Makefile.tpl (STAGE1_TFLAGS): Add -fno-checking.
	(STAGE2_CFLAGS): Likewise.
	(STAGE2_TFLAGS): Likewise.
	(STAGE3_CFLAGS): Add -fchecking.
	(STAGE3_TFLAGS): Likewise.
	(STAGEtrain_CFLAGS): Filter out -fchecking.
	(STAGEtrain_TFLAGS): Likewise.
	* Makefile.in: Re-generate.

From-SVN: r259669

tree-vect-data-refs.c (vect_get_data_access_cost): Get prologue cost vector and pass it to vect_get_load_cost.

2018-04-26  Richard Biener  <rguenther@suse.de>

	* tree-vect-data-refs.c (vect_get_data_access_cost): Get
	prologue cost vector and pass it to vect_get_load_cost.
	(vect_get_peeling_costs_all_drs): Likewise.
	(vect_peeling_hash_get_lowest_cost): Likewise.
	(vect_enhance_data_refs_alignment): Likewise.

From-SVN: r259668

2018-04-26  Richard Biener  <rguenther@suse.de>

	PR middle-end/85450
	* tree-cfg.c (verify_gimple_assign_unary): Restore proper
	checking of integer<->pointer conversions.
	* omp-expand.c (expand_omp_for_static_nochunk): Avoid
	sign-/zero-extending pointer types.
	(expand_omp_for_static_chunk): Likewise.

From-SVN: r259667

	* config/mips/mips.c (mips_asan_shadow_offset): New function.
	(TARGET_ASAN_SHADOW_OFFSET): Define.
	* config/mips/mips.h (FRAME_GROWS_DOWNWARD): Augment to also be
	true for -fsanitize=address.

Co-Authored-By: Jean Lee <xiaoyur347@gmail.com>

From-SVN: r259666

If someone has access to a 64-bit mips-linux system to test this (with the obvious edit), that'd be really nice.

If someone has access to a 64-bit mips-linux system to test
this (with the obvious edit), that'd be really nice.  Until
then, best to not introduce possible build failures.

	* configure.tgt <mips*-*-linux*>: Enable build, excluding
	mips*64*-*-linux*.

From-SVN: r259665

As mentioned in <http://gcc.gnu.org/ml/gcc/2018-03/msg00133.html> the bogus adjustment to 160 from 144 (which is reverted here)...

As mentioned in <http://gcc.gnu.org/ml/gcc/2018-03/msg00133.html>
the bogus adjustment to 160 from 144 (which is reverted here),
is a single-token commit in upstream r301307, an attempt to
correct a failed build due to an upstream change to compile the
runtime with D_FILE_OFFSET_BITS=64.  The correct fix is here:
just use the right include.  Yes, user-struct-stat64-as-stat is
actually 160 for MIPS o32 and I hear user-struct-stat is also
160 for n32.  There are additional fields appended for
user-struct-stat!  I guess for MIPS it's as bad as it gets for
mixing up kernel and user struct stat.  The context of the patch
doesn't show that in the #else there's the correct include, the
one for <asm/stat.h> to get the kernel-struct-stat.  If you
can't compile it, IMHO the kernel headers are just too old; 3.2
is fine for example.

	* sanitizer_common/sanitizer_platform_limits_linux.cc: Do not
	take the shortcut to #include <sys/stat.h> for MIPS instead of
	the kernel <asm/stat.h>.  Explain why sys/stat.h is misleading
	or wrong to get the kernel struct stat.
	* sanitizer_common/sanitizer_platform_limits_posix.h [__mips__]:
	Correct the value for 32-bit non-android struct_kernel_stat_sz.

From-SVN: r259664

This appears to be present in compiler-rt upstream, but as part
of more intrusive changes.  For gcc, the lack of this results in
a fatal warning (-Werror) at build-time.

	* sanitizer_common/sanitizer_atomic_clang_other.h [_MIPS_SIM
	&& _MIPS_SIM == _ABIO32] (lock): Add initializer for .pad member.

From-SVN: r259663

From-SVN: r259662

2018-04-25  Catherine Moore <clm@codesourcery.com>

        * MAINTAINERS (mips): Remove myself as MIPS maintainer.

From-SVN: r259658

When gcc dwarf2out generates the .debug_line table itself (for example
when generating one for a split DWARF .dwo) it uses natural sorting for
the directory table. Shorter directory paths come before longer directory
paths with the same prefix. This causes the files in the line table to
pick the shorter dir. Creating slightly ineffecient line tables because
the longer directory paths will never be used.

Fix this by changing file_info_cmp () to pick longer directory prefixes
before shorter ones. We still sort files (the compilation unit) without
any directory path before all entries with a directory path, so they
will still use dir entry 0 (the working directory).

A hello.c program would get the following dir and line table before:

Directory table:
 /opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/8.0.1/include
 /usr/include
 /usr/include/bits

File name table:
 Entry Dir   Time      Size      Name
 1     0     0         0         hello.c
 2     1     0         0         stddef.h
 3     2     0         0         bits/types.h
 4     2     0         0         libio.h
 5     2     0         0         stdio.h
 6     2     0         0         bits/sys_errlist.h

Note that the last directory table entry is never used.
After this patch it looks as follows:

Directory table:
 /opt/local/install/gcc/lib/gcc/x86_64-pc-linux-gnu/8.0.1/include
 /usr/include/bits
 /usr/include

File name table:
 Entry Dir   Time      Size      Name
 1     0     0         0         hello.c
 2     1     0         0         stddef.h
 3     2     0         0         types.h
 4     3     0         0         libio.h
 5     3     0         0         stdio.h
 6     2     0         0         sys_errlist.h

Which is similar to what gas would output.

gcc/ChangeLog:

	* dwarf2out.c (file_info_cmp): Sort longer dir prefixes before
	shorter ones.

From-SVN: r259655

	* config/i386/i386.md (*x86_mov<mode>cc_0_m1): Use type "alu1" rather
	than "alu", remove explicit "memory" and "imm_disp" attributes.
	(*x86_mov<mode>cc_0_m1_se, *x86_mov<mode>cc_0_m1_neg): Likewise.

From-SVN: r259650

	PR middle-end/85414
	* simplify-rtx.c (simplify_unary_operation_1) <case SIGN_EXTEND,
	case ZERO_EXTEND>: Pass SUBREG_REG (op) rather than op to
	gen_lowpart_no_emit.

From-SVN: r259649

2018-04-25  Sebastian Peryt  <sebastian.peryt@intel.com>

	gcc/ChangeLog:

	PR target/85473
	* config/i386/i386.c (ix86_expand_builtin): Change memory
	operand to XI, extend p0 to Pmode.
	* config/i386/i386.md: Change unspec volatile and operand
	1 mode to XI, change operand 0 mode to P.

	gcc/testsuite/ChangeLog:

	PR target/85473
	* gcc.target/i386/pr85473-1.c: New test.
	* gcc.target/i386/pr85473-2.c: New test.

From-SVN: r259648

gcc/
	* config/nds32/nds32-predicates.c (nds32_can_use_bclr_p): Mask with
	GET_MODE_MASK before any checking.
	(nds32_can_use_bset_p): Likewise.
	(nds32_can_use_btgl_p): Likewise.

From-SVN: r259647

gcc/
	* config/nds32/nds32-doubleword.md: New define_split pattern for
	illegal register number.

From-SVN: r259646

libgcc/
	* config/nds32/sfp-machine.h: Fix settings for NDS32_ABI_2FP_PLUS.
	* config/nds32/t-nds32-newlib (HOST_LIBGCC2_CFLAGS): Use -fwrapv.

From-SVN: r259645

gcc/
	* config/nds32/nds32.c (nds32_print_operand): Set op_value ealier.

From-SVN: r259643

gcc/
	* config/nds32/nds32.h (ASM_APP_ON): Add missing newline character.

From-SVN: r259642

	PR sanitizer/84307
	* c-decl.c (build_compound_literal): Call pushdecl (decl) even when
	it is not TREE_STATIC.
	* c-typeck.c (c_mark_addressable) <case COMPOUND_LITERAL_EXPR>: Mark
	not just the COMPOUND_LITERAL_EXPR node itself addressable, but also
	its COMPOUND_LITERAL_EXPR_DECL.

From-SVN: r259641

	PR ada/85007
	* gnat_ugn.texi: Regenerate.

From-SVN: r259639

2018-04-25  Richard Biener  <rguenther@suse.de>

	* lto-streamer.h (LTO_major_version): Bump to 8.

From-SVN: r259638

From-SVN: r259637

From-SVN: r259635

	PR c++/85437
	PR c++/49171
	* cp-tree.h (REINTERPRET_CAST_P): New.
	* constexpr.c (cxx_eval_constant_expression) <case NOP_EXPR>:
	Reject REINTERPET_CAST_P conversions.  Use cplus_expand_constant
	for non-trivial PTRMEM_CST cases.
	* typeck.c (build_nop_reinterpret): New.
	(build_reinterpret_cast_1): Use it.  Set REINTERPRET_CAST_P on
	NOP_EXPRs returned by cp_convert.

	* g++.dg/cpp0x/addressof1.C: Make reinterpret cases runtime checks.
	* g++.dg/cpp0x/constexpr-cast.C: Remove xfails
	* g++.dg/cpp0x/constexpr-nullptr-2.C: Likewise.
	* g++.dg/cpp0x/constexpr-pmf1.C: Check when optimized.
	* g++.dg/cpp0x/pr85437-1.C: New.
	* g++.dg/cpp0x/pr85437-2.C: New.
	* g++.dg/cpp0x/pr85437-3.C: New.
	* g++.dg/cpp0x/pr85437-4.C: New.

From-SVN: r259629

From-SVN: r259628

2018-04-24  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/85520
	* decl.c (gfc_match_char_spec): Check for negative length and set to 0.

2018-04-24  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/85520
	* gfortran.dg/pr85520.f90: New test.

From-SVN: r259623

Both of these libfuncs had a "tkf" misspelling, which caused
gcc.target/powerpc/pr85456.c to fail (there is no test for __abskf2).


	* config/rs6000/rs6000.c (init_float128_ieee): Fix spelling mistakes
	in __abskf2 and __powikf2.

From-SVN: r259622

__CET__ has been changed by revision 259522:

commit d59cfa9a4064339cf2bd2da828c4c133f13e57f0
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Fri Apr 20 13:30:13 2018 +0000

    Define __CET__ for -fcf-protection and remove -mibt

to

    (__CET__ & 1) != 0: -fcf-protection=branch or -fcf-protection=full
    (__CET__ & 2) != 0: -fcf-protection=return or -fcf-protection=full

We should check (__CET__ & 2) != 0 for shadow stack.

libgcc/

	* config/i386/linux-unwind.h: Add (__CET__ & 2) != 0 check
	when including "config/i386/shadow-stack-unwind.h".

libitm/

	* config/x86/sjlj.S (_ITM_beginTransaction): Add
	(__CET__ & 2) != 0 check for shadow stack.
	(GTM_longjmp): Likewise.

From-SVN: r259621

Since profiledbootstrap uses

STAGEfeedback_CFLAGS = $(STAGE4_CFLAGS) -fprofile-use

add

STAGE4_CFLAGS += -fcf-protection -mcet

to bootstrap-cet.mk to support profiledbootstrap with CET.

	PR bootstrap/85490
	* bootstrap-cet.mk (STAGE4_CFLAGS): New.

From-SVN: r259620

In this testcase it is possible to generate an invalid SISD shift of zero:
Error: immediate value out of range 1 to 64 at operand 3 -- `sshr v9.2s,v0.2s,0'

The SSHR and USHR instructions require a shift from 1 up to the element size.
However our constraints on the scalar shifts that generate these patterns
allow a shift amount of zero as well. The pure GP-reg ASR and LSR instructions allow a shift amount of zero.

It is unlikely that a shift of zero will survive till the end of compilation, but it's not impossible, as this PR shows.

The patch tightens up the constraints in the offending patterns by adding two new constraints
that allow shift amounts [1,32] and [1,64] and using them in *aarch64_ashr_sisd_or_int_<mode>3
and *aarch64_lshr_sisd_or_int_<mode>3.
The left-shift SISD instructions SHL and USHL allow a shift amount of zero so don't need adjustment
The vector shift patterns that map down to SSHR and USHR already enforce the correct immediate range. 

        PR target/85512
        * config/aarch64/constraints.md (Usg, Usj): New constraints.
        * config/aarch64/iterators.md (cmode_simd): New mode attribute.
        * config/aarch64/aarch64.md (*aarch64_ashr_sisd_or_int_<mode>3):
        Use the above on operand 2.  Reindent.
        (*aarch64_lshr_sisd_or_int_<mode>3): Likewise.

        * gcc.dg/pr85512.c: New test.

From-SVN: r259614