It currently wants to see lvx insns on AIX, and no lvx insns on Linux.
What is really wanted is lvx insns when no VSX, and lxv* insns if VSX.
This fixes it.


	* gcc.target/powerpc/altivec-7.c: Look for lxv* if generating VSX
	instructions, and lvx if not.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269772 138bc75d-0d04-0410-961f-82ee72b054a4

Currently these bswap testcases use global variables, which causes
problems with -m32: the memory access is a D-form access, and when
combine tries to combine that with the bswap it tries a D-form store
with byte reverse.  That instruction does not exist, and since combine
started with only two insns here it will not try splitting this.

This should be improved, but it is not what this test is testing, and
the "load" case already uses a pointer, so let's do that for the store
case as well.


	* gcc.target/powerpc/bswap16.c: Use a pointer instead of a global for
	the "store" test as well.
	* gcc.target/powerpc/bswap32.c: Ditto.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269771 138bc75d-0d04-0410-961f-82ee72b054a4

For the big stack frame in the test GCC used to say

pr18096-1.c:7:6: error: total size of local objects too large

but now it says

pr18096-1.c:7:6: error: total size of local objects 2147483647 exceeds maximum 2147483392

Let's just allow both in the test.


gcc/testsuite/
	* gcc.target/powerpc/pr18096-1.c: Allow an error message that says
	"exceeds" instead of just one that talks about "too large".


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269770 138bc75d-0d04-0410-961f-82ee72b054a4

	PR fortran/68009
	* iresolve.c: Include trans.h.
	(gfc_resolve_fe_runtine_error): Set backend_decl on
	resolved_sym.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269769 138bc75d-0d04-0410-961f-82ee72b054a4

Here we were pushing into the right access context, but we were called from
a deferred checking context, so didn't end up doing the checks until after
we left the access context.

	* pt.c (tsubst_default_argument): Don't defer access checks.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269766 138bc75d-0d04-0410-961f-82ee72b054a4

	PR middle-end/88945
	* tree-ssanames.c (release_ssa_name_fn): For released SSA names
	use a TREE_TYPE of error_mark_node to avoid ICEs when dumping
	basic-blocks that are removed.  Remove restoring SSA_NAME_VAR.
	* tree-outof-ssa.c (eliminate_useless_phis): Remove redundant checking.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269765 138bc75d-0d04-0410-961f-82ee72b054a4

2019-03-18  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/gcn/gcn-run.c (struct output): Make next_output unsigned.
	Extend queue to 1024 entries.
	Add "consumed" field.
	(gomp_print_output): Remove print_index parameter.
	Add final parameter.
	Change limit to unsigned.
	Use consumed field to implement circular buffer.
	Detect interrupted print in final pass.
	Flush output at the end.
	(run): Update gomp_print_output usage.
	(main): Initialize kernargs->output_data.consumed.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269764 138bc75d-0d04-0410-961f-82ee72b054a4

This patch fixes a case in which we vectorised something with a
fully-predicated loop even after the cost model had rejected it.
E.g. the loop in the testcase has the costs:

  Vector inside of loop cost: 27
  Vector prologue cost: 0
  Vector epilogue cost: 0
  Scalar iteration cost: 7
  Scalar outside cost: 6
  Vector outside cost: 0
  prologue iterations: 0
  epilogue iterations: 0

and we can see that the loop executes at most three times, but we
decided to vectorise it anyway.

(The costs here are equal for three iterations, but the same thing
happens even when the vector code is strictly more expensive.)

The problem is the handling of "/VF" in:

  /* Calculate number of iterations required to make the vector version
     profitable, relative to the loop bodies only.  The following condition
     must hold true:
     SIC * niters + SOC > VIC * ((niters-PL_ITERS-EP_ITERS)/VF) + VOC
     where
     SIC = scalar iteration cost, VIC = vector iteration cost,
     VOC = vector outside cost, VF = vectorization factor,
     PL_ITERS = prologue iterations, EP_ITERS= epilogue iterations
     SOC = scalar outside cost for run time cost model check.  */

We treat the "/VF" as truncating, but for fully-predicated loops, it's
closer to a ceil division, since fractional iterations are handled by a
full iteration with some predicate bits set to false.

The easiest fix seemed to be to calculate the minimum number of vector
iterations first, then use that to calculate the minimum number of scalar
iterations.

Calculating the minimum number of vector iterations might make sense for
unpredicated loops too, since calculating the scalar niters directly
doesn't take into account the fact that the VIC multiple has to be an
integer.  But the handling of PL_ITERS and EP_ITERS for unpredicated
loops is a bit hand-wavy anyway, so maybe vagueness here cancels out
vagueness there?

Either way, changing this for unpredicated loops would be much too
invasive for stage 4, so the patch keeps it specific to fully-predicated
loops (i.e. SVE) for now.  There's no functional change for other targets.

2019-03-18  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* tree-vect-loop.c (vect_estimate_min_profitable_iters): Fix the
	calculation of the minimum number of scalar iterations for
	fully-predicated loops.

gcc/testsuite/
	* gcc.target/aarch64/sve/cost_model_1.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269763 138bc75d-0d04-0410-961f-82ee72b054a4

2019-03-18  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/89546
	* tree-sra.c (propagate_subaccesses_across_link): Requeue new_acc if
	any propagation to its children took place.

	testsuite/
	* gcc.dg/tree-ssa/pr89546.c: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269761 138bc75d-0d04-0410-961f-82ee72b054a4

This fixes PR target/89627.

The RISC-V ABI document[1] says:

   For the purposes of this section, "struct" refers to a C struct
   with its hierarchy flattened, including any array fields. That is,
   struct { struct { float f[1]; } g[2]; } and struct { float f; float
   g; } are treated the same. Fields containing empty structs or
   unions are ignored while flattening, even in C++, unless they have
   nontrivial copy constructors or destructors.

However, this flattening only applies when one of the fields of the
flattened structure can be placed into a floating point register,
otherwise no flattening occurs.

Currently GCC fails to correctly consider that empty C++ structures
have a non-zero size when constructing the arguments from a flattened
structure, and as a result, trying to pass a C++ structure like this:

  struct sf { struct {} e; float f; };

Doesn't work correctly, GCC fails to take the offset of 'f' within
'sf' into account and will actually pass the space backing 'e' as the
contents of 'f'.

This patch fixes this so that 'f' will be passed correctly.  A couple
of new tests are added to cover this functionality.

[1] https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md

gcc/ChangeLog:

	PR target/89627
	* config/riscv/riscv.c (riscv_pass_fpr_single): Add offset
	parameter, and make use of it.
	(riscv_get_arg_info): Pass offset to riscv_pass_fpr_single.

gcc/testsuite/ChangeLog:

	PR target/89627
	* g++.target/riscv/call-with-empty-struct-float.C: New file.
	* g++.target/riscv/call-with-empty-struct-int.C: New file.
	* g++.target/riscv/call-with-empty-struct.H: New file.
	* g++.target/riscv/riscv.exp: New file.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269760 138bc75d-0d04-0410-961f-82ee72b054a4

2019-03-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85014
	* semantics.c (finish_non_static_data_member): Check return value
	of context_for_name_lookup and immediately return error_mark_node
	if isn't a type.

/testsuite
2019-03-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85014
	* g++.dg/cpp0x/pr85014.C: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269759 138bc75d-0d04-0410-961f-82ee72b054a4

xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.opt (mcode-density-frame): Get the inital value
	from TARGET_CODE_DENSITY_FRAME_DEFAULT.
	* config/arc/elf.h (TARGET_CODE_DENSITY_FRAME_DEFAULT): Define.
	* config/arc/linux.h (TARGET_CODE_DENSITY_FRAME_DEFAULT): Define.
	* config/arc/arc.md (pop_multi_fp_blink): Adjust constraints to
	match what the ops is doing.
	(push_multi_fp_blink): Likewise.
	* config/arc/arc.c (arc_override_options): Enable enter/leave when
	compiling for size and elf target.
	(arc_save_callee_enter): Adjust note to match what enter/leave
	operation does.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269758 138bc75d-0d04-0410-961f-82ee72b054a4

xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (tst_movb): Fix constraint.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269757 138bc75d-0d04-0410-961f-82ee72b054a4

xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269756 138bc75d-0d04-0410-961f-82ee72b054a4

The ARC port is changing the allocation order in the
arc_conditional_register_usage function, but this is not the proper
way. Thus, we employ ADJUST_REG_ALLOC_ORDER hook for this task.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-protos.h (arc_adjust_reg_alloc_order): Declare.
	* config/arc/arc.c (arc_conditional_register_usage): Remove all
	reg_alloc_order references.
	(size_alloc_order): Define.
	(arc_adjust_reg_alloc_order): New function.
	* config/arc/arc.h (REG_ALLOC_ORDER): Proper define the register
	order.
	(ADJUST_REG_ALLOC_ORDER): Define.
	(HONOR_REG_ALLOC_ORDER): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269755 138bc75d-0d04-0410-961f-82ee72b054a4

	PR target/87561
	* config/i386/i386.c (ix86_add_stmt_cost): Pessimize strided
	loads and stores a bit more.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269754 138bc75d-0d04-0410-961f-82ee72b054a4

	PR target/87561
	* config/i386/i386.c (ix86_add_stmt_cost): Apply strided
	load pessimization to stores as well.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269753 138bc75d-0d04-0410-961f-82ee72b054a4

	* gcc.dg/pr86979.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269752 138bc75d-0d04-0410-961f-82ee72b054a4

        * sel-sched.c (compute_av_set_at_bb_end): When we have an ineligible
        successor, use NULL as its av set.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269751 138bc75d-0d04-0410-961f-82ee72b054a4

	PR fortran/88008
	* gfortran.h (expr_t): Add EXPR_UNKNOWN.
	* expr.c (gfc_copy_expr): Add EXPR_UNKNOWN to switch statement.
	(gfc_simplify_expr): Likewise.
	* module.c (mio_expr): Likewise.
	* resovle.c (extract_compcall_passed_object): Issue error on
	unknown type.
	(check_typebound_baseobject): Issue error on wrong type.
	* trans-expr.c (gfc_apply_interface_mapping_to_expr): Add
	EXPR_UNKNOWN to switch statement.

2019-03-17  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/88008
	 * gfortran.dg/typebound_call_31.f90: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269750 138bc75d-0d04-0410-961f-82ee72b054a4

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269749 138bc75d-0d04-0410-961f-82ee72b054a4

Earlier changes to defer instantiating a defaulted noexcept-specifier that
depends on yet-unparsed default member initializers broke this testcase,
where instantiation fails for another reason.  In this case there's no
reason to defer and try again later, so let's not.

	* pt.c (maybe_instantiate_noexcept): Only return false if defaulted.
	(regenerate_decl_from_template): Use it for noexcept-specs.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269746 138bc75d-0d04-0410-961f-82ee72b054a4

	* gcc.dg/compat/pr83487-1_y.c: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269745 138bc75d-0d04-0410-961f-82ee72b054a4

	* gfortran.dg/temporary_3.f90: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269744 138bc75d-0d04-0410-961f-82ee72b054a4

	* gcc.dg/warn-abs-1.c: Likewise.
	* gfortran.dg/ISO_Fortran_binding_1.f90: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269743 138bc75d-0d04-0410-961f-82ee72b054a4

	* c-c++-common/builtin-has-attribute-3.c: Define SKIP_ALIAS on
	hppa*-*-hpux*.
	* gcc.dg/attr-copy.c: Require alias support.
	* gcc.dg/ipa/ipa-icf-39.c: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269742 138bc75d-0d04-0410-961f-82ee72b054a4

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269737 138bc75d-0d04-0410-961f-82ee72b054a4

	* scanner.c (load_line): Remove linenum and current_line static
	variables, add warned_tabs automatic variable.  Use current_file->line
	instead of current_line and warned_tabs boolean to avoid diagnosing
	tabs multiple times on the same line.

	* gfortran.dg/continuation_15.f90: New test.
	* gfortran.dg/continuation_16.f90: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269734 138bc75d-0d04-0410-961f-82ee72b054a4

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269733 138bc75d-0d04-0410-961f-82ee72b054a4

	* g++.dg/abi/ref-temp1.C: Skip on 32-bit hppa*-*-hpux*.
	* g++.dg/cpp0x/pr84497.C: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269732 138bc75d-0d04-0410-961f-82ee72b054a4

	* gcc.dg/attr-copy-6.c: Likewise.
	* gcc.dg/pr87793.c: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269731 138bc75d-0d04-0410-961f-82ee72b054a4

	* gcc.dg/pr84941.c: Skip on hppa*-*-*.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269730 138bc75d-0d04-0410-961f-82ee72b054a4

	* gcc.dg/gimplefe-34.c: Likewise.
	* gcc.dg/compat/pr83487-2_x.c: Use -fno-common option on hppa*-*-hpux*.
	* gcc.dg/compat/pr83487-2_y.c: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269729 138bc75d-0d04-0410-961f-82ee72b054a4

	* gcc.dg/Wattributes-6.c: Skip warning check at line 404 on
	hppa*64*-*-*.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269728 138bc75d-0d04-0410-961f-82ee72b054a4

	* c-c++-common/Wattributes.c: Skip a warning check on hppa*64*-*-*.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269727 138bc75d-0d04-0410-961f-82ee72b054a4

	hppa*-*-hpux*.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269726 138bc75d-0d04-0410-961f-82ee72b054a4

	PR fortran/84394
	* symbol.c (gfc_add_subroutine): If we are encountering a
	subrtoutine within a BLOCK DATA and the name starts with an
	underscore, do not check.

2019-03-16  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84394
	* gfortran.dg/blockdata_11.f90: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269721 138bc75d-0d04-0410-961f-82ee72b054a4

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269720 138bc75d-0d04-0410-961f-82ee72b054a4

	PR fortran/60091
	* expr.c (gfc_check_pointer_assign): Correct and improve error
	messages for invalid pointer assignments.

	PR fortran/60091
	* gfortran.dg/pointer_remapping_3.f08: Adjust error messages.
	* gfortran.dg/pointer_remapping_7.f90: Adjust error message.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269717 138bc75d-0d04-0410-961f-82ee72b054a4

PR89721 shows LRA treating an unspec_volatile's result as invariant,
which of course isn't correct.  This patch fixes it.


	PR rtl-optimization/89721
	* lra-constraints (invariant_p): Return false if side_effects_p holds.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@269716 138bc75d-0d04-0410-961f-82ee72b054a4