Raphael Amiard [Thu, 19 Sep 2019 08:13:10 +0000 (08:13 +0000)]
[Ada] Propagate documentation to formal bounded sets
2019-09-19 Raphael Amiard <amiard@adacore.com>
gcc/ada/
* libgnat/a-cfhase.ads (Set): Add comments to public primitives.
From-SVN: r275937
Raphael Amiard [Thu, 19 Sep 2019 08:13:06 +0000 (08:13 +0000)]
[Ada] Add comments wrt. deallocation of bounded sets/maps
2019-09-19 Raphael Amiard <amiard@adacore.com>
gcc/ada/
* libgnat/a-cbhama.ads, libgnat/a-cbhase.ads,
libgnat/a-chtgop.ads (Clear): Refine comments
From-SVN: r275936
Eric Botcazou [Thu, 19 Sep 2019 08:13:01 +0000 (08:13 +0000)]
[Ada] Fix spurious type mismatch failure on nested instantiations
This fixes a spurious type mismatch failure reported between formal and
actual of a call to a subprogram that comes from the instantiation of a
child generic unit that itself contains an instantiation of a slibling
child generic unit, when the parent is itself a generic unit with
private part. The regression was introduced by a recent change made to
clear the Is_Generic_Actual_Type on the implicit full view built when a
generic package is instantiated on a private type.
2019-09-19 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_ch12.adb (Restore_Private_Views): Comment out new code
that clear the Is_Generic_Actual_Type also on the full view.
gcc/testsuite/
* gnat.dg/generic_inst13.adb,
gnat.dg/generic_inst13_pkg-nested_g.ads,
gnat.dg/generic_inst13_pkg-ops_g.ads,
gnat.dg/generic_inst13_pkg.ads: New testcase.
From-SVN: r275935
Bob Duff [Thu, 19 Sep 2019 08:12:56 +0000 (08:12 +0000)]
[Ada] Infinite loop with concatenation and aspect
This patch fixes a bug where an array object initialized with a
concatenation, and that has an aspect_specification for Alignment,
causes the compiler goes into an infinite loop.
2019-09-19 Bob Duff <duff@adacore.com>
gcc/ada/
* exp_ch3.adb (Rewrite_As_Renaming): Return False if there are
any aspect specifications, because otherwise Insert_Actions
blows up.
gcc/testsuite/
* gnat.dg/concat3.adb: New testcase.
From-SVN: r275934
Eric Botcazou [Thu, 19 Sep 2019 08:12:52 +0000 (08:12 +0000)]
[Ada] Fix fallout of previous change for bit-packed arrays
This fixes a regression introduced by the previous change that improved
the handling of explicit by-reference mechanism. For the very specific
case of a component of a bit-packed array, the front-end still needs to
insert a copy around the call because this is where the rewriting into
the sequence of mask-and-shifts is done for the code generator.
2019-09-19 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_ch6.adb (Add_Simple_Call_By_Copy_Code): Add
Bit_Packed_Array parameter and documet it. Always insert a copy
if it is set True.
(Expand_Actuals): Adjust the calls to
Add_Simple_Call_By_Copy_Code.
gcc/testsuite/
* gnat.dg/pack26.adb: New testcase.
From-SVN: r275933
Bob Duff [Thu, 19 Sep 2019 08:12:47 +0000 (08:12 +0000)]
[Ada] gnatxref: infinite loop on symbols not found
This patch fixes a bug in which if a symbol is not found, gnatxref can
sometimes enter an infinite loop. No impact on compilation.
2019-09-19 Bob Duff <duff@adacore.com>
gcc/ada/
* xref_lib.adb (Get_Symbol_Name): If we reach EOF in the first
loop without finding the symbol, return "???". Otherwise, it's
an infinite loop.
(Parse_EOL): Assert that we're not already at EOF. Remove
processing of LF/CR -- there are no operating systems that use
that.
From-SVN: r275932
Eric Botcazou [Thu, 19 Sep 2019 08:12:39 +0000 (08:12 +0000)]
[Ada] Improve handling of explicit by-reference mechanism
This improves the handling of an explicit by-reference passing mechanism
specified by means of the GNAT pragma Export_Function. This device sort
of circumvents the rules of the language for the by-reference passing
mechanism and it's then up to the programmer to ensure that the actual
parameter is addressable; if it is not, the compiler will generate a
temporary around the call, thus effectively passing the actual by copy.
It turns out that the compiler was too conservative when determining
whether the actual parameter is addressable, in particular if it's a
component of a record type subject to a representation clause.
The change effectively moves this computation from the front-end to the
back-end, which has much more information on the layout and alignment
of types and thus can be less conservative.
2019-09-19 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_ch6.adb (Is_Legal_Copy): Also return false for an aliased
formal and a formal passed by reference in convention Ada. Add
missing guard to the existing test on Is_Valued_Procedure.
From-SVN: r275931
Bob Duff [Thu, 19 Sep 2019 08:12:34 +0000 (08:12 +0000)]
[Ada] Rtsfind: improve comment on RTE_Available
2019-09-19 Bob Duff <duff@adacore.com>
gcc/ada/
* rtsfind.ads (RTE_Available): Improve comment.
From-SVN: r275930
Richard Biener [Thu, 19 Sep 2019 06:08:33 +0000 (06:08 +0000)]
tree-parloops.c (parloops_is_slp_reduction): Do not set LOOP_VINFO_OPERANDS_SWAPPED.
2019-09-19 Richard Biener <rguenther@suse.de>
* tree-parloops.c (parloops_is_slp_reduction): Do not set
LOOP_VINFO_OPERANDS_SWAPPED.
(parloops_is_simple_reduction): Likewise.
* tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Do not
initialize operands_swapped.
(_loop_vec_info::~_loop_vec_info): Do not re-canonicalize stmts.
(vect_is_slp_reduction): Do not swap operands.
* tree-vectorizer.h (_loop_vec_info::operands_swapped): Remove.
(LOOP_VINFO_OPERANDS_SWAPPED): Likewise.
From-SVN: r275928
Hongtao Liu [Thu, 19 Sep 2019 01:21:39 +0000 (01:21 +0000)]
Extend pass rpad to handle avx512f vcvtusi2ss vcvtusi2ss 538.imagick_r improved...
Extend pass rpad to handle avx512f vcvtusi2ss vcvtusi2ss
538.imagick_r improved by 4% with single copy run on SKYLAKE workstation.
gcc/
* config/i386/i386.md
(*floatuns<SWI48:mode><MODEF:mode>2_avx512):
Add avx_partial_xmm_update.
gcc/testsuie
* gcc.target/i386/pr87007-3.c: New test.
From-SVN: r275926
Jim Wilson [Thu, 19 Sep 2019 01:19:25 +0000 (01:19 +0000)]
RISC-V: Fix more splitters accidentally calling gen_reg_rtx.
PR target/91683
* config/riscv/riscv-protos.h (riscv_split_symbol): New bool parameter.
(riscv_move_integer): Likewise.
* config/riscv/riscv.c (riscv_split_integer): Pass FALSE for new
riscv_move_integer arg.
(riscv_legitimize_move): Likewise.
(riscv_force_temporary): New parameter in_splitter. Don't call
force_reg if true.
(riscv_unspec_offset_high): Pass FALSE for new riscv_force_temporary
arg.
(riscv_add_offset): Likewise.
(riscv_split_symbol): New parameter in_splitter. Pass to
riscv_force_temporary.
(riscv_legitimize_address): Pass FALSE for new riscv_split_symbol
arg.
(riscv_move_integer): New parameter in_splitter. New local
can_create_psuedo. Don't call riscv_split_integer or force_reg when
in_splitter TRUE.
(riscv_legitimize_const_move): Pass FALSE for new riscv_move_integer,
riscv_split_symbol, and riscv_force_temporary args.
* config/riscv/riscv.md (low<mode>+1): Pass TRUE for new
riscv_move_integer arg.
(low<mode>+2): Pass TRUE for new riscv_split_symbol arg.
From-SVN: r275925
GCC Administrator [Thu, 19 Sep 2019 00:16:15 +0000 (00:16 +0000)]
Daily bump.
From-SVN: r275924
Ian Lance Taylor [Thu, 19 Sep 2019 00:03:25 +0000 (00:03 +0000)]
libgo: support gollvm build on arm64 linux
This CL serves as part of an initial change for enabling gollvm
building on arm64 linux, the rest of the change will be covered by
another one to the gollvm repo.
Incorporate type definition of 'uint128' to 'runtime' and 'syscall'
packges, the change is not specific to arm64 linux but made available
for all platforms.
Verified by building and unit-testing gollvm on linux x86-64 and arm64.
Verified by building and checking gccgo on linux x86-64 and arm64.
Fixes golang/go#33711
Change-Id: I4720c7d810cfd4ef720962fb4104c5641b2459c0
From-SVN: r275919
Wilco Dijkstra [Wed, 18 Sep 2019 19:52:09 +0000 (19:52 +0000)]
[ARM] Add logical DImode expanders
We currently use default mid-end expanders for logical DImode operations.
These split operations without first splitting off complex immediates or
memory operands. The resulting expansions are non-optimal and allow for
fewer LDRD/STRD opportunities. So add back explicit expanders which ensure
memory operands and immediates are handled more efficiently.
gcc/
PR target/91738
* config/arm/arm.md (<logical_op>di3): Expand explicitly.
(one_cmpldi2): Likewise.
* config/arm/arm.c (const_ok_for_dimode_op): Return true if one
of the constant parts is simple.
* config/arm/iterators.md (LOGICAL): Add new code iterator.
(logical_op): Add new code attribute.
(logical_OP): Likewise.
* config/arm/predicates.md (arm_anddi_operand): Add predicate.
(arm_iordi_operand): Add predicate.
(arm_xordi_operand): Add predicate.
From-SVN: r275907
H.J. Lu [Wed, 18 Sep 2019 19:50:45 +0000 (19:50 +0000)]
i386: Restore Skylake SImode hard register store cost
On Skylake, we should move integer register to SSE register without
going through memory. This patch restores Skylake SImode hard register
store cost to 6.
gcc/
PR target/90878
* config/i386/x86-tune-costs.h (skylake_cost): Restore SImode
hard register store cost to 6.
gcc/testsuite/
PR target/90878
* gcc.target/i386/pr90878.c: New test.
From-SVN: r275906
H.J. Lu [Wed, 18 Sep 2019 19:49:19 +0000 (19:49 +0000)]
i386: Increase Skylake SImode pseudo register store cost
On Skylake, SImode store cost isn't less than half cost of 128-bit vector
store. This patch increases Skylake SImode pseudo register store cost to
make it the same as QImode and HImode.
gcc/
PR target/91446
* config/i386/x86-tune-costs.h (skylake_cost): Increase SImode
pseudo register store cost from 3 to 6 to make it the same as
QImode and HImode.
gcc/testsuite/
PR target/91446
* gcc.target/i386/pr91446.c: New test.
From-SVN: r275905
Wilco Dijkstra [Wed, 18 Sep 2019 18:33:30 +0000 (18:33 +0000)]
[ARM] Cleanup 64-bit multiplies
Cleanup 64-bit multiplies. Combine the expanders using iterators.
Merge the signed/unsigned multiplies as well as the pre-Armv6 and Armv6
variants. Split DImode operands early into parallel sets inside the
MULL/MLAL instructions - this improves register allocation and avoids
subreg issues due to other DImode operations splitting early.
gcc/
* config/arm/arm.md (maddsidi4): Remove expander.
(mulsidi3adddi): Remove pattern.
(mulsidi3adddi_v6): Likewise.
(mulsidi3_nov6): Likewise.
(mulsidi3_v6): Likewise.
(umulsidi3): Remove expander.
(umulsidi3_nov6): Remove pattern.
(umulsidi3_v6): Likewise.
(umulsidi3adddi): Likewise.
(umulsidi3adddi_v6): Likewise.
(<Us>mulsidi3): Add combined expander.
(<Us>maddsidi4): Likewise.
(<US>mull): Add combined umull and smull pattern.
(<US>mlal): Likewise.
* config/arm/iterators.md (Us): Add new iterator.
From-SVN: r275901
Wilco Dijkstra [Wed, 18 Sep 2019 18:22:55 +0000 (18:22 +0000)]
[ARM] Cleanup highpart multiply patterns
Cleanup the various highpart multiply patterns using iterators.
As a result the signed and unsigned variants and the pre-Armv6
multiply operand constraints are all handled in a single pattern
and simple expander.
gcc/
* config/arm/arm.md (smulsi3_highpart): Use <US> and <SE> iterators.
(smulsi3_highpart_nov6): Remove pattern.
(smulsi3_highpart_v6): Likewise.
(umulsi3_highpart): Likewise.
(umulsi3_highpart_nov6): Likewise.
(umulsi3_highpart_v6): Likewise.
(<US>mull_high): Add new combined multiply pattern.
From-SVN: r275899
Richard Biener [Wed, 18 Sep 2019 18:12:38 +0000 (18:12 +0000)]
tree-vect-loop.c (vect_is_simple_reduction): Remove operand swapping.
2019-09-18 Richard Biener <rguenther@suse.de>
* tree-vect-loop.c (vect_is_simple_reduction): Remove operand
swapping.
(vectorize_fold_left_reduction): Remove assert.
(vectorizable_reduction): Also expect COND_EXPR non-reduction
operand in position 2. Remove assert.
From-SVN: r275898
Wilco Dijkstra [Wed, 18 Sep 2019 18:11:24 +0000 (18:11 +0000)]
[ARM] Cleanup multiply patterns
Cleanup the 32-bit multiply patterns. Merge the pre-Armv6 with the Armv6
patterns, remove useless alternatives and order the accumulator operands
to prefer MLA Ra, Rb, Rc, Ra whenever feasible.
gcc/
* config/arm/arm.md (arm_mulsi3): Remove pattern.
(arm_mulsi3_v6): Likewise.
(mulsi3addsi_v6): Likewise.
(mulsi3subsi): Likewise.
(mul): Add new multiply pattern.
(mla): Likewise.
(mls): Likewise.
From-SVN: r275897
Richard Biener [Wed, 18 Sep 2019 18:07:06 +0000 (18:07 +0000)]
tree-parloops.c (report_ploop_op): Copy from report_vect_op.
2019-09-18 Richard Biener <rguenther@suse.de>
* tree-parloops.c (report_ploop_op): Copy from report_vect_op.
(parloops_valid_reduction_input_p): Copy from
valid_reduction_input_p.
(parloops_is_slp_reduction): Copy from vect_is_slp_reduction.
(parloops_needs_fold_left_reduction_p): Copy from
needs_fold_left_reduction_p.
(parloops_is_simple_reduction): Copy from
vect_is_simple_reduction.
(parloops_force_simple_reduction): Copy from
vect_force_simple_reduction.
(gather_scalar_reductions): Adjust.
* tree-vect-loop.c (vect_force_simple_reduction): Make static.
* tree-vectorizer.h (vect_force_simple_reduction): Remove.
From-SVN: r275896
Martin Liska [Wed, 18 Sep 2019 13:32:25 +0000 (15:32 +0200)]
Tweak clang-format configuration.
2019-09-18 Martin Liska <mliska@suse.cz>
* clang-format: Tweak configuration based on new
options offered.
From-SVN: r275875
Richard Biener [Wed, 18 Sep 2019 12:43:08 +0000 (12:43 +0000)]
tree-vectorizer.h (get_initial_def_for_reduction): Remove.
2019-09-18 Richard Biener <rguenther@suse.de>
* tree-vectorizer.h (get_initial_def_for_reduction): Remove.
* tree-vect-loop.c (get_initial_def_for_reduction): Make
static.
(vect_create_epilog_for_reduction): Remove dead code.
From-SVN: r275874
Richard Sandiford [Wed, 18 Sep 2019 11:37:02 +0000 (11:37 +0000)]
Make assemble_real generate canonical CONST_INTs
assemble_real used GEN_INT to create integers directly from the
longs returned by real_to_target. assemble_integer then went on
to interpret the const_ints as though they had the mode corresponding
to the accompanying size parameter:
imode = mode_for_size (size * BITS_PER_UNIT, mclass, 0).require ();
for (i = 0; i < size; i += subsize)
{
rtx partial = simplify_subreg (omode, x, imode, i);
But in the assemble_real case, X might not be canonical for IMODE.
If the interface to assemble_integer is supposed to allow outputting
(say) the low 4 bytes of a DImode integer, then the simplify_subreg
above is wrong. But if the number of bytes passed to assemble_integer
is supposed to be the number of bytes that the integer actually contains,
assemble_real is wrong.
This patch takes the latter interpretation and makes assemble_real
generate const_ints that are canonical for the number of bytes passed.
The flip_storage_order handling assumes that each long is a full
SImode, which e.g. excludes BITS_PER_UNIT != 8 and float formats
whose memory size is not a multiple of 32 bits (which includes
HFmode at least). The patch therefore leaves that code alone.
If interpreting each integer as SImode is correct, the const_ints
that it generates are also correct.
2019-09-18 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* varasm.c (assemble_real): Generate canonical const_ints.
From-SVN: r275873
Richard Biener [Wed, 18 Sep 2019 11:28:20 +0000 (11:28 +0000)]
re PR lto/91763 (go.go-torture/execute/printnil.go FAILs)
2019-09-18 Richard Biener <rguenther@suse.de>
PR lto/91763
* lto-streamer-in.c (input_eh_regions): Move EH init to
lto_materialize_function.
* tree-streamer-in.c (lto_input_ts_function_decl_tree_pointers):
Likewise.
lto/
* lto.c (lto_materialize_function): Initialize EH by looking
at the function personality and flag_exceptions setting.
From-SVN: r275872
Richard Sandiford [Wed, 18 Sep 2019 09:44:06 +0000 (09:44 +0000)]
Make get_value_for_expr check for INTEGER_CSTs
CONSTANT lattice values are symbolic constants rather than
compile-time constants, so among other things can be POLY_INT_CSTs.
This patch fixes a case in which we assumed all CONSTANTs were either
ADDR_EXPRs or INTEGER_CSTs.
This is tested by later SVE patches.
2019-09-18 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* tree-ssa-ccp.c (get_value_for_expr): Check whether CONSTANTs
are INTEGER_CSTs.
From-SVN: r275871
Richard Sandiford [Wed, 18 Sep 2019 09:43:42 +0000 (09:43 +0000)]
Don't treat variable-length vectors as VLAs during gimplification
Source-level SVE vectors should be gimplified in the same way
as normal fixed-length vectors rather than as VLAs.
This is tested by later SVE patches.
2019-09-18 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* gimplify.c (gimplify_decl_expr): Use poly_int_tree_p instead
of checking specifically for INTEGER_CST.
From-SVN: r275870
Richard Sandiford [Wed, 18 Sep 2019 09:43:29 +0000 (09:43 +0000)]
Handle variable-length vectors in compute_record_mode
This patch makes compute_record_mode handle SVE vectors in the
same way as it would handle fixed-length vectors. There should
be no change in behaviour for other targets.
This is needed for the SVE equivalent of arm_neon.h types like
int8x8x2_t (i.e. a pair of int8x8_ts).
2019-09-18 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* stor-layout.c (compute_record_mode): Operate on poly_uint64
sizes instead of uhwi sizes.
From-SVN: r275869
Richard Sandiford [Wed, 18 Sep 2019 09:43:10 +0000 (09:43 +0000)]
Two more POLY_INT cases for dwarf2out.c
loc_list_for_tree_1 and add_const_value_attribute currently ICE
on POLY_INTs. loc_list_for_tree_1 can do something sensible but
add_const_value_attribute has to punt, since the constant there
needs to be a link-time rather than load-time or run-time constant.
This is tested by later SVE patches.
2019-09-18 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* dwarf2out.c (loc_list_from_tree_1): Handle POLY_INT_CST.
(add_const_value_attribute): Handle CONST_POLY_INT.
From-SVN: r275868
Martin Liska [Wed, 18 Sep 2019 09:03:14 +0000 (11:03 +0200)]
Come up with debug counter for store-merging.
2019-09-18 Martin Liska <mliska@suse.cz>
* dbgcnt.def (store_merging): New counter.
* gimple-ssa-store-merging.c (imm_store_chain_info::output_merged_stores):
Use it in store merging.
From-SVN: r275867
Bob Duff [Wed, 18 Sep 2019 08:33:49 +0000 (08:33 +0000)]
[Ada] Avoid gnatbind regression caused by Copy_Bitfield
The recent Copy_Bitfield change caused gnatbind to change elaboration
order, causing different error messages.
2019-09-18 Bob Duff <duff@adacore.com>
gcc/ada/
* exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield): Move call
to RTE_Available later, so it doesn't disturb the elab order.
The RE_Copy_Bitfield entity is defined in package
System.Bitfields which has a dependency on package
System.Bitfield_Utils, which has it its spec:
pragma Elaborate_Body;
The query on RTE_Available forces loading and analyzing
System.Bitfields and all its withed units.
From-SVN: r275866
Eric Botcazou [Wed, 18 Sep 2019 08:33:44 +0000 (08:33 +0000)]
[Ada] Fix spurious alignment warning on simple address clause
This eliminates a spurious alignment warning given by the compiler on an
address clause when the No_Exception_Propagation restriction is in
effect and the -gnatw.x switch is used. In this configuration the
address clauses whose expression is itself of the form X'Address would
not be sufficiently analyzed and, therefore, the compiler might give
false positive warnings.
2019-09-18 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* checks.ads (Alignment_Warnings_Record): Add P component.
* checks.adb (Apply_Address_Clause_Check): Be prepared to kill
the warning also if the clause is of the form X'Address.
(Validate_Alignment_Check_Warning): Kill the warning if the
clause is of the form X'Address and the alignment of X is
compatible.
gcc/testsuite/
* gnat.dg/warn31.adb, gnat.dg/warn31.ads: New testcase.
From-SVN: r275865
Ed Schonberg [Wed, 18 Sep 2019 08:33:40 +0000 (08:33 +0000)]
[Ada] Crash on universal case expression in fixed-point division
This patch fixes a compiler abort on a case expression whose
alternatives are universal_real constants, when the case expression is
an operand in a multiplication or division whose other operand is of a
fixed-point type.
2019-09-18 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sem_res.adb (Set_Mixed_Node_Expression): If a conditional
expression has universal_real alternaitves and the context is
Universal_Fixed, as when it is an operand in a fixed-point
multiplication or division, resolve the expression with a
visible fixed-point type, which must be unique.
gcc/testsuite/
* gnat.dg/fixedpnt8.adb: New testcase.
From-SVN: r275864
Ed Schonberg [Wed, 18 Sep 2019 08:33:32 +0000 (08:33 +0000)]
[Ada] Use static discriminant value for discriminated task record
This patch allows the construction of a static subtype for the generated
constrained Secondary_Stack component of a task for which a stack size
is specified, when compiling for a restricted run-time that forbids
dynamic allocation. Needed for LLVM.
2019-09-18 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sem_ch3.adb (Constrain_Component_Type): For a discriminated
type, handle the case of a constraint given by a conversion of a
discriminant of the enclosing type. Necessary when compiling a
discriminated task for a restricted run-time, when the generated
Secondary_Stack component may be set by means of an aspect on
the task type.
From-SVN: r275863
Ed Schonberg [Wed, 18 Sep 2019 08:33:27 +0000 (08:33 +0000)]
[Ada] Crash on aggregate with dscriminant in if-expression as default
This patch fixes a crash on a an aggregate for a discriminated type,
when a component of the aggregate is also a discriminated type
constrained by a discriminant of the enclosing object, and the default
value for the component is a conditional expression that includes
references to that outer discriminant.
2019-09-18 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* exp_aggr.adb (Expand_Record_Aggregate, Rewrite_Discriminant):
After rewriting a reference to an outer discriminant as a
selected component of the enclosing object, analyze the selected
component to ensure that the entity of the selector name is
properly set. This is necessary when the aggregate appears
within an expression that may have been analyzed already.
gcc/testsuite/
* gnat.dg/discr58.adb: New testcase.
From-SVN: r275862
Justin Squirek [Wed, 18 Sep 2019 08:33:23 +0000 (08:33 +0000)]
[Ada] Spurious ineffective use_clause warning
This patch fixes an issue whereby expansion of post conditions may lead
to spurious ineffective use_clause warnings when a use type clause is
present in a package specification and a use package clause exists in
the package body on the package containing said type.
2019-09-18 Justin Squirek <squirek@adacore.com>
gcc/ada/
* sem_ch8.adb (Use_One_Type): Add guard to prevent warning on a
reundant use package clause where there is no previous
use_clause in the chain.
gcc/testsuite/
* gnat.dg/warn30.adb, gnat.dg/warn30.ads: New testcase.
From-SVN: r275861
Justin Squirek [Wed, 18 Sep 2019 08:33:17 +0000 (08:33 +0000)]
[Ada] Missing accessibility check on discrim assignment
This patch fixes an issue whereby assignments from anonymous access
descriminants which are part of stand alone objects of anonymous access
did not have runtime checks generated based on the accessibility level
of the object according to ARM 3.10.2 (12.5/3).
2019-09-18 Justin Squirek <squirek@adacore.com>
gcc/ada/
* exp_ch4.adb (Expand_N_Type_Conversion): Add calculation of an
alternative operand for the purposes of generating accessibility
checks.
gcc/testsuite/
* gnat.dg/access8.adb, gnat.dg/access8_pkg.adb,
gnat.dg/access8_pkg.ads: New testcase.
From-SVN: r275860
Eric Botcazou [Wed, 18 Sep 2019 08:33:12 +0000 (08:33 +0000)]
[Ada] Fix sharing of expression in array aggregate with others choice
This change fixes a long-standing issue in the compiler that is
generally silent but may lead to wrong code generation in specific
circumstances. When an others choice in an array aggregate spans
multiple ranges, the compiler may generate multiple (groups of)
assignments for the ranges.
The problem is that it internally reuses the original expression for all
the ranges, which is problematic if this expression gets rewritten
during the processing of one of the ranges and typically causes a new
temporary to be shared between different ranges.
The solution is to duplicate the original expression for each range.
2019-09-18 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_aggr.adb (Build_Array_Aggr_Code): In STEP 1 (c), duplicate
the expression and reset the Loop_Actions for each loop
generated for an others choice.
gcc/testsuite/
* gnat.dg/aggr28.adb: New testcase.
From-SVN: r275859
Justin Squirek [Wed, 18 Sep 2019 08:33:07 +0000 (08:33 +0000)]
[Ada] Spurious run time error on anonymous access formals
This patch fixes an issue whereby subprograms with anonymous access
formals may trigger spurious runtime accessibility errors when such
formals are used as actuals in calls to nested subprograms.
Running these commands:
gnatmake -q pass.adb
gnatmake -q fail.adb
gnatmake -q test_main.adb
gnatmake -q indirect_call_test.adb
pass
fail
test_main
indirect_call_test
On the following sources:
-- pass.adb
procedure Pass is
function A (Param : access Integer) return Boolean is
type Typ is access all Integer;
function A_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end;
begin
return A_Inner (Param) = Typ (Param);
end;
function B (Param : access Integer) return Boolean;
function B (Param : access Integer) return Boolean is
type Typ is access all Integer;
function B_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end;
begin
return B_Inner (Param) = Typ (Param);
end;
procedure C (Param : access Integer) is
type Typ is access all Integer;
Var : Typ;
procedure C_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- OK
end;
begin
C_Inner (Param);
end;
procedure D (Param : access Integer);
procedure D (Param : access Integer) is
type Typ is access all Integer;
Var : Typ;
procedure D_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- OK
end;
begin
D_Inner (Param);
end;
protected type E is
function G (Param : access Integer) return Boolean;
procedure I (Param : access Integer);
end;
protected body E is
function F (Param : access Integer) return Boolean is
type Typ is access all Integer;
function F_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end;
begin
return F_Inner (Param) = Typ (Param);
end;
function G (Param : access Integer) return Boolean is
type Typ is access all Integer;
function G_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end;
B : Boolean := F (Param); -- OK
begin
return G_Inner (Param) = Typ (Param);
end;
procedure H (Param : access Integer) is
type Typ is access all Integer;
Var : Typ;
procedure H_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- OK
end;
begin
H_Inner (Param);
end;
procedure I (Param : access Integer) is
type Typ is access all Integer;
Var : Typ;
procedure I_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- OK
end;
begin
H (Param); -- OK
I_Inner (Param);
end;
end;
task type J is end;
task body J is
function K (Param : access Integer) return Boolean is
type Typ is access all Integer;
function K_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end;
begin
return K_Inner (Param) = Typ (Param);
end;
function L (Param : access Integer) return Boolean;
function L (Param : access Integer) return Boolean is
type Typ is access all Integer;
function L_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end;
begin
return L_Inner (Param) = Typ (Param);
end;
procedure M (Param : access Integer) is
type Typ is access all Integer;
Var : Typ;
procedure M_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- OK
end;
begin
M_Inner (Param);
end;
procedure N (Param : access Integer);
procedure N (Param : access Integer) is
type Typ is access all Integer;
Var : Typ;
procedure N_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- OK
end;
begin
N_Inner (Param);
end;
Var : aliased Integer := 666;
begin
if K (Var'Access) then null; end if; -- OK
if L (Var'Access) then null; end if; -- OK
M (Var'Access); -- OK
N (Var'Access); -- OK
end;
begin
begin
begin
declare
Var : aliased Integer := 666;
T : J;
Prot : E;
begin
if A (Var'Access) then null; end if; -- OK
if B (Var'Access) then null; end if; -- OK
C (Var'Access); -- OK
D (Var'Access); -- OK
if Prot.G (Var'Access) then null; end if; -- OK
Prot.I (Var'Access); -- OK
end;
end;
end;
end;
-- fail.adb
procedure Fail is
Failures : Integer := 0;
type Base_Typ is access all Integer;
function A (Param : access Integer) return Boolean is
subtype Typ is Base_Typ;
function A_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- ERROR
end;
begin
return A_Inner (Param) = Typ (Param);
exception
when others => Failures := Failures + 1;
return False;
end;
function B (Param : access Integer) return Boolean;
function B (Param : access Integer) return Boolean is
subtype Typ is Base_Typ;
function B_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- ERROR
end;
begin
return B_Inner (Param) = Typ (Param);
exception
when others => Failures := Failures + 1;
return False;
end;
procedure C (Param : access Integer) is
subtype Typ is Base_Typ;
Var : Typ;
procedure C_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- ERROR
end;
begin
C_Inner (Param);
exception
when others => Failures := Failures + 1;
end;
procedure D (Param : access Integer);
procedure D (Param : access Integer) is
subtype Typ is Base_Typ;
Var : Typ;
procedure D_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- ERROR
end;
begin
D_Inner (Param);
exception
when others => Failures := Failures + 1;
end;
protected type E is
function G (Param : access Integer) return Boolean;
procedure I (Param : access Integer);
end;
protected body E is
function F (Param : access Integer) return Boolean is
subtype Typ is Base_Typ;
function F_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- ERROR
end;
begin
return F_Inner (Param) = Typ (Param);
exception
when others => Failures := Failures + 1;
return False;
end;
function G (Param : access Integer) return Boolean is
subtype Typ is Base_Typ;
function G_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- ERROR
end;
B : Boolean := F (Param); -- ERROR
begin
return G_Inner (Param) = Typ (Param);
exception
when others => Failures := Failures + 1;
return False;
end;
procedure H (Param : access Integer) is
subtype Typ is Base_Typ;
Var : Typ;
procedure H_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- ERROR
end;
begin
H_Inner (Param);
exception
when others => Failures := Failures + 1;
end;
procedure I (Param : access Integer) is
subtype Typ is Base_Typ;
Var : Typ;
procedure I_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- ERROR
end;
begin
H (Param); -- ERROR
I_Inner (Param);
exception
when others => Failures := Failures + 1;
end;
end;
task type J is end;
task body J is
function K (Param : access Integer) return Boolean is
subtype Typ is Base_Typ;
function K_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- ERROR
end;
begin
return K_Inner (Param) = Typ (Param);
exception
when others => Failures := Failures + 1;
return False;
end;
function L (Param : access Integer) return Boolean;
function L (Param : access Integer) return Boolean is
subtype Typ is Base_Typ;
function L_Inner (Param : access Integer) return Typ is
begin
return Typ (Param); -- ERROR
end;
begin
return L_Inner (Param) = Typ (Param);
exception
when others => Failures := Failures + 1;
return False;
end;
procedure M (Param : access Integer) is
subtype Typ is Base_Typ;
Var : Typ;
procedure M_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- ERROR
end;
begin
M_Inner (Param);
exception
when others => Failures := Failures + 1;
end;
procedure N (Param : access Integer);
procedure N (Param : access Integer) is
subtype Typ is Base_Typ;
Var : Typ;
procedure N_Inner (Param : access Integer) is
begin
Var := Typ (Param); -- ERROR
end;
begin
N_Inner (Param);
exception
when others => Failures := Failures + 1;
end;
Var : aliased Integer := 666;
begin
if K (Var'Access) then null; end if; -- ERROR
if L (Var'Access) then null; end if; -- ERROR
M (Var'Access); -- ERROR
N (Var'Access); -- ERROR
end;
begin
begin
begin
declare
Var : aliased Integer := 666;
T : J;
Prot : E;
begin
if A (Var'Access) then null; end if; -- ERROR
if B (Var'Access) then null; end if; -- ERROR
C (Var'Access); -- ERROR
D (Var'Access); -- ERROR
if Prot.G (Var'Access) then null; end if; -- ERROR
Prot.I (Var'Access); -- ERROR
if Failures /= 12 then
raise Program_Error;
end if;
end;
end;
end;
end;
-- indirect_call_test.adb
with Text_IO;
procedure Indirect_Call_Test is
Tracing_Enabled : constant Boolean := False;
procedure Trace (S : String) is
begin
if Tracing_Enabled then
Text_IO.Put_Line (S);
end if;
end;
package Pkg is
type Root is abstract tagged null record;
function F (X : Root; Param : access Integer)
return Boolean is abstract;
end Pkg;
function F_Wrapper
(X : Pkg.Root; Param : access Integer)
return Boolean
is (Pkg.F (Pkg.Root'Class (X), Param));
-- dispatching call
function A (Param : access Integer) return Boolean is
type Typ is access all Integer;
package Nested is
type Ext is new Pkg.Root with null record;
overriding function F
(X : Ext; Param : access Integer)
return Boolean;
end Nested;
function A_Inner
(Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end A_Inner;
package body Nested is
function F (X : Ext; Param : access Integer)
return Boolean is
begin
return A_Inner (Param) = null;
end;
end;
Ext_Obj : Nested.Ext;
begin
Trace ("In subtest A");
return F_Wrapper (Pkg.Root (Ext_Obj), Param);
exception
when Program_Error =>
Trace ("Failed");
return True;
end A;
function B (Param : access Integer) return Boolean is
type Typ is access all Integer;
function B_Inner
(Param : access Integer) return Typ is
begin
return Typ (Param); -- OK
end B_Inner;
type Ref is access function
(Param : access Integer) return Typ;
Ptr : Ref := B_Inner'Access;
function Ptr_Caller return Typ is
(Ptr.all (Param)); -- access-to-subp value
begin
Trace ("In subtest B");
return Ptr_Caller = null;
exception
when Program_Error =>
Trace ("*** failed");
return True;
end B;
begin
begin
begin
declare
Var : aliased Integer := 666;
begin
if A (Var'Access) then
null;
end if;
Trace ("Subtest A done");
if B (Var'Access) then
null;
end if;
Trace ("Subtest B done");
end;
end;
end;
end Indirect_Call_Test;
Should produce the following output:
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
Failure
2019-09-18 Justin Squirek <squirek@adacore.com>
gcc/ada/
* einfo.adb, einfo.ads (Minimum_Accessibility): Added new field.
(Set_Minimum_Accessibility): Added to set new field.
(Minimum_Accessibility): Added to fetch new field.
* exp_ch6.adb (Expand_Subprogram_Call): Modify calls to fetch
accessibility levels to the new subprogram Get_Accessibility
which handles cases where minimum accessibility might be needed.
* sem_ch6.adb (Analyze_Subprogram_Body_Helper): Add section to
generate a Minimum_Accessibility object within relevant
subprograms.
* sem_util.adb, sem_util.ads (Dynamic_Accessibility_Level):
Additional documentation added and modify section to use new
function Get_Accessibility.
(Get_Accessibility): Added to centralize processing of
accessibility levels.
From-SVN: r275858
Steve Baird [Wed, 18 Sep 2019 08:33:02 +0000 (08:33 +0000)]
[Ada] Implement AI12-0086's rules for discriminants in aggregates
In
Ada2012, a discriminant value that governs an active variant part in
an aggregate had to be static. AI12-0086 relaxes this restriction - if
the subtype of the discriminant value is a static subtype all of whose
values select the same variant, then that is good enough.
2019-09-18 Steve Baird <baird@adacore.com>
gcc/ada/
* sem_util.ads (Interval_Lists): A new visible package. This
package is visible because it is also intended for eventual use
in Sem_Eval.Subtypes_Statically_Compatible when that function is
someday upgraded to handle static predicates correctly. This
new package doesn't really need to be visible for now, but it
still seems like a good idea.
* sem_util.adb (Gather_Components): Implement AI12-0086 via the
following strategy. The existing code knows how to take a static
discriminant value and identify the corresponding variant; in
the newly-permitted case of a non-static value of a static
subtype, we arbitrarily select a value of the subtype and find
the corresponding variant using the existing code. Subsequently,
we check that every other value of the discriminant's subtype
corresponds to the same variant; this is done using the newly
introduced Interval_Lists package.
(Interval_Lists): Provide a body for the new package.
gcc/testsuite/
* gnat.dg/ai12_0086_example.adb: New testcase.
From-SVN: r275857
Javier Miranda [Wed, 18 Sep 2019 08:32:55 +0000 (08:32 +0000)]
[Ada] Fix portability issues in access to subprograms
This patch improves the portability of the code generated by the
compiler for access to subprograms. Written by Richard Kenner.
2019-09-18 Javier Miranda <miranda@adacore.com>
gcc/ada/
* exp_ch4.adb (Expand_N_Op_Eq): The frontend assumes that we can
do a bit-for-bit comparison of two access to protected
subprogram pointers. However, there are two reasons why we may
not be able to do that: (1) there may be padding bits for
alignment before the access to subprogram, and (2) the access to
subprogram itself may not be compared bit-for- bit because the
activation record part is undefined: two pointers are equal iff
the subprogram addresses are equal. This patch fixes it by
forcing a field-by-field comparison.
* bindgen.adb (Gen_Adainit): The type No_Param_Proc is defined
in the library as having Favor_Top_Level, but when we create an
object of that type in the binder file we don't have that
pragma, so the types are different. This patch fixes this issue.
* libgnarl/s-interr.adb, libgnarl/s-interr__hwint.adb,
libgnarl/s-interr__sigaction.adb, libgnarl/s-interr__vxworks.adb
(Is_Registered): This routine erroneously assumes that the
access to protected subprogram is two addresses. We need to
create the same record that the compiler makes to ensure that
any padding is the same. Then we have to look at just the first
word of the access to subprogram. This patch fixes this issue.
From-SVN: r275856
Bob Duff [Wed, 18 Sep 2019 08:32:51 +0000 (08:32 +0000)]
[Ada] Improve efficiency of copying bit-packed slices
This patch substantially improves the efficiency of copying large slices
of bit-packed arrays, by copying 32 bits at a time instead of 1 at a
time.
2019-09-18 Bob Duff <duff@adacore.com>
gcc/ada/
* exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield): The call
to Copy_Bitfield is now enabled.
(Expand_Assign_Array_Bitfield): Multiply 'Length times
'Component_Size "by hand" instead of using 'Size.
From-SVN: r275855
Vasiliy Fofanov [Wed, 18 Sep 2019 08:32:46 +0000 (08:32 +0000)]
[Ada] Fix minor formatting issue
2019-09-18 Vasiliy Fofanov <fofanov@adacore.com>
gcc/ada/
* doc/gnat_rm/implementation_defined_pragmas.rst: Fix minor
formatting issue.
From-SVN: r275854
Javier Miranda [Wed, 18 Sep 2019 08:32:42 +0000 (08:32 +0000)]
[Ada] Code cleanup of alignment representation clauses in dispatch tables
This patch does not modify the functionality of the compiler; it avoids
generating non-required alignment representation clauses for dispatch
tables.
2019-09-18 Javier Miranda <miranda@adacore.com>
gcc/ada/
* exp_disp.adb (Make_DT, Make_Secondary_DT): Remove generation
of alignment representation clause for the following tables:
Predef_Prims, Iface_DT, TSD, ITable, DT.
From-SVN: r275853
Steve Baird [Wed, 18 Sep 2019 08:32:37 +0000 (08:32 +0000)]
[Ada] Don't fail a front-end assertion if errors have already been detected
In sem_eval.adb, we have an assertion that the type of a "null" literal
is an access type. It turns out that this assertion can fail when
processing an illegal program, e.g. one that contains something like
"Integer'(null)". This leads to differences in the compiler's generated
output for such tests depending on whether assertions are/aren't
enabled; in particular, the "compilation abandoned due to previous
error" message generated in Comperr.Compiler_Abort. In order to avoid
these differences, we change the assertion so that it does not fail if
errors have already been posted on the given node.
2019-09-18 Steve Baird <baird@adacore.com>
gcc/ada/
* sem_eval.adb (Expr_Value): Do not fail "the type of a null
literal must be an access type" assertion if errors have already
been posted on the given node.
From-SVN: r275852
Piotr Trojanek [Wed, 18 Sep 2019 08:32:33 +0000 (08:32 +0000)]
[Ada] Refine type of Get_Homonym_Number result
Routine Get_Homonym_Number always returns a positive number. This is
explained in its comment and is evident from its body. No test attached,
because semantics is unaffected.
2019-09-18 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* exp_dbug.ads, exp_dbug.adb (Get_Homonym_Number): Refine type
from Nat to Pos.
* sem_util.adb (Add_Homonym_Suffix): Refine type of a local
variable.
From-SVN: r275851
Yannick Moy [Wed, 18 Sep 2019 08:32:28 +0000 (08:32 +0000)]
[Ada] Skip entity name qualification in GNATprove mode
GNATprove was using the qualification of names for entities with local
homonyms in the same scope, requiring the use of a suffix to
differentiate them. This caused problems for correctly identifying
primitive equality operators. This case is now handled like the rest of
entities in GNATprove, by instead updating Unique_Name to append the
suffix on-the-fly where needed.
There is no impact on compilation and hence no test.
2019-09-18 Yannick Moy <moy@adacore.com>
gcc/ada/
* exp_dbug.adb (Append_Homonym_Number): Use new function
Get_Homonym_Number.
(Get_Homonym_Number): New function to return the homonym number.
(Qualify_Entity_Name): Remove special case for GNATprove.
* exp_dbug.ads (Get_Homonym_Number): Make the new function
public for use in GNATprove.
* frontend.adb (Frontend): Do not qualify names in GNATprove
mode.
* sem_util.adb (Unique_Name): Append homonym suffix where needed
for entities which have local homonyms in the same scope.
From-SVN: r275850
Nicolas Roche [Wed, 18 Sep 2019 08:32:23 +0000 (08:32 +0000)]
[Ada] Ensure that Scan_Real result does not depend on trailing zeros
Previous change in that procedure to handle overflow issues during
scanning removed the special handling for trailing zeros in the decimal
part. Beside the absence of overflow during scanning the special
handling of these zeros is still necessary.
2019-09-18 Nicolas Roche <roche@adacore.com>
gcc/ada/
* libgnat/s-valrea.adb (Scan_Integral_Digits): New procedure.
(Scan_Decimal_Digits): New procedure.
(As_Digit): New function.
(Scan_Real): Use Scan_Integral_Digits and Scan_Decimal_Digits.
gcc/testsuite/
* gnat.dg/float_value2.adb: New testcase.
From-SVN: r275849
Claire Dross [Wed, 18 Sep 2019 08:32:19 +0000 (08:32 +0000)]
[Ada] Factor out code for deciding statically known Constrained attributes
Create a separate routine in Exp_Util for deciding the value of the
Constrained attribute when it is statically known. This routine is used
in Exp_Attr and will be reused in the backend of GNATprove.
There is no impact on compilation and hence no test.
2019-09-18 Claire Dross <dross@adacore.com>
gcc/ada/
* exp_attr.adb (Expand_N_Attribute_Reference): Call routine from
Exp_Util to know the value of the Constrained attribute in the
static case.
* exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Make
implicit dereferences inside the Constrained attribute explicit.
* exp_util.ads, exp_util.adb
(Attribute_Constrained_Static_Value): New routine to compute the
value of a statically known reference to the Constrained
attribute.
From-SVN: r275848
Vadim Godunko [Wed, 18 Sep 2019 08:32:14 +0000 (08:32 +0000)]
[Ada] Raise exception on call to Expect for a dead process
Call to Expect for a dead process results in SIGBUS signal on Linux
systems. Process_Died exception is raised in this case now.
2019-09-18 Vadim Godunko <godunko@adacore.com>
gcc/ada/
* libgnat/g-expect.adb (Expect_Internal): Don't include invalid
file descriptors into the set of file descriptors for Poll.
Raise Process_Died exception when computed set of file
descriptors to monitor is empty.
gcc/testsuite/
* gnat.dg/expect4.adb: New testcase.
From-SVN: r275847
Frederic Konrad [Wed, 18 Sep 2019 08:32:09 +0000 (08:32 +0000)]
[Ada] Fix errno for rename for the VxWorks 6 target
This fixes the wrong errno for rename when the file is not existing on a
dosFs. In the end it makes Ada.Directories.Rename raising the right
exception in the case we are trying to move a file in a non existing
directory.
2019-09-18 Frederic Konrad <konrad@adacore.com>
gcc/ada/
* adaint.c: Include dosFsLib.h and vwModNum.h for VxWorks 6.
(__gnat_rename): Map S_dosFsLib_FILE_NOT_FOUND to ENOENT.
From-SVN: r275846
Steve Baird [Wed, 18 Sep 2019 08:32:05 +0000 (08:32 +0000)]
[Ada] No Storage_Error for an oversized disabled ghost array object
In some cases where the size computation for an object declaration will
unconditionally overflow, the FE generates code to raise Storage_Error
at the point of the object declaration (and may generate an associated
warning). Don't do this if the object declaration is an ignored (i.e.,
disabled) ghost declaration.
2019-09-18 Steve Baird <baird@adacore.com>
gcc/ada/
* freeze.adb (Freeze_Object_Declaration): Do not call
Check_Large_Modular_Array when the object declaration being
frozen is an ignored ghost entity.
gcc/testsuite/
* gnat.dg/ghost7.adb, gnat.dg/ghost7.ads: New testcase.
From-SVN: r275845
Tom Tromey [Wed, 18 Sep 2019 08:32:00 +0000 (08:32 +0000)]
[Ada] Fix typo in error message
An error message mentions "gnamake", where it meant to mention
"gnatmake".
2019-09-18 Tom Tromey <tromey@adacore.com>
gcc/ada/
* make.adb (Initialize): Fix typo.
From-SVN: r275844
Olivier Hainque [Wed, 18 Sep 2019 08:31:56 +0000 (08:31 +0000)]
[Ada] Fix 32/64bit mistake on SYSTEM_INFO component in s-win32
The dwActiveProcessorMask field in a SYSTEM_INFO structure on Windows
should be DWORD_PTR, an integer the size of a pointer.
In s-win32, it is currently declared as DWORD. This happens to work on
32bit hosts and is wrong on 64bit hosts, causing mishaps in accesses to
this component and all the following ones.
The proposed correction adds a definition for DWORD_PTR and uses it for
dwActiveProcessorMask in System.Win32.SYSTEM_INFO.
2019-09-18 Olivier Hainque <hainque@adacore.com>
gcc/ada/
* libgnat/s-win32.ads (DWORD_PTR): New type, pointer size
unsigned int.
(SYSTEM_INFO): Use it for dwActiveProcessorMask.
gcc/testsuite/
* gnat.dg/system_info1.adb: New testcase.
From-SVN: r275843
Arnaud Charlet [Wed, 18 Sep 2019 08:31:51 +0000 (08:31 +0000)]
[Ada] Improve doc on Warning_As_Error
2019-09-18 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* doc/gnat_rm/implementation_defined_pragmas.rst: Improve doc on
Warning_As_Error.
* gnat_rm.texi: Regenerate.
From-SVN: r275842
Arnaud Charlet [Wed, 18 Sep 2019 08:31:46 +0000 (08:31 +0000)]
[Ada] Remove remaining references to VMS support
2019-09-18 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* doc/gnat_rm/implementation_defined_characteristics.rst,
doc/gnat_rm/implementation_defined_pragmas.rst,
doc/gnat_rm/implementation_of_specific_ada_features.rst: Remove
remaining references to VMS support
* gnat_rm.texi: Regenerate.
From-SVN: r275841
Arnaud Charlet [Wed, 18 Sep 2019 08:31:42 +0000 (08:31 +0000)]
[Ada] System.Stack_Usage: fix a typo
2019-09-18 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* libgnat/s-stausa.adb: Fix a typo
From-SVN: r275840
Bob Duff [Wed, 18 Sep 2019 08:31:37 +0000 (08:31 +0000)]
[Ada] Avoid uninitialized variable in bounded containers
In function Copy in Ada.Containers.Bounded_Ordered_Sets and other
bounded containers packages, remove a possible use of an uninitialized
variable. This was not a bug, because the uninitialized variable could
be used only if checks are suppressed, and the checks would have failed,
leading to erroneous execution.
However, it seems more robust this way, and is probably equally
efficient, and avoids a warning that is given if checks are suppressed,
and the -Wall switch is given, and optimization is turned on.
2019-09-18 Bob Duff <duff@adacore.com>
gcc/ada/
* libgnat/a-cbhama.adb, libgnat/a-cbhase.adb,
libgnat/a-cbmutr.adb, libgnat/a-cborma.adb,
libgnat/a-cborse.adb, libgnat/a-cobove.adb (Copy): Avoid reading
the uninitialized variable C in the Checks = False case. Change
variable to be a constant.
gcc/testsuite/
* gnat.dg/containers1.adb, gnat.dg/containers1.ads: New
testcase.
From-SVN: r275839
Claire Dross [Wed, 18 Sep 2019 08:31:32 +0000 (08:31 +0000)]
[Ada] Fix style issues in functional maps
Rename global constants from I to J. No functional changes.
2019-09-18 Claire Dross <dross@adacore.com>
gcc/ada/
* libgnat/a-cofuma.adb (Remove, Elements_Equal_Except,
Keys_Included, Keys_Included_Except): Rename loop indexes and
global constants from I to J.
From-SVN: r275838
Arnaud Charlet [Wed, 18 Sep 2019 08:31:27 +0000 (08:31 +0000)]
[Ada] Refine previous change for -gnatn and LLVM
2019-09-18 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* exp_unst.adb (Unnest_Subprograms): Refine previous change.
From-SVN: r275837
Richard Sandiford [Wed, 18 Sep 2019 07:38:32 +0000 (07:38 +0000)]
[x86] Tweak testcases for PR82361
gcc/testsuite/gcc.target/i386/pr82361-[12].c check whether we
can optimise away a 32-to-64-bit zero extension of a 32-bit
division or modulus result. Currently this fails for the modulus
part of f1 and f2 in pr82361-1.c:
/* FIXME: We are still not able to optimize the modulo in f1/f2, only manage
one. */
/* { dg-final { scan-assembler-times "movl\t%edx" 2 } } */
pr82361-2.c instead expects no failures:
/* Ditto %edx to %rdx zero extensions. */
/* { dg-final { scan-assembler-not "movl\t%edx, %edx" } } */
But we actually get the same zero-extensions for f1 and f2 in pr82361-2.c.
The reason they don't trigger a failure is that the RA allocates the
asm input for "d" to %rdi rather than %rdx, so we have:
movl %rdx, %rdi
instead of:
movl %rdx, %rdx
For the tests to work as expected, I think they have to force "c" and
"d" to be %rax and %rdx respectively. We then see the same failure in
pr82361-2.c as for pr82361-1.c (but doubled, due to the 8-bit division
path).
2019-09-18 Richard Sandiford <richard.sandiford@arm.com>
gcc/testsuite/
* gcc.target/i386/pr82361-1.c (f1, f2, f3, f4, f5, f6): Force
"c" to be in %rax and "d" to be in %rdx.
* gcc.target/i386/pr82361-2.c: Expect 4 instances of "movl\t%edx".
From-SVN: r275836
GCC Administrator [Wed, 18 Sep 2019 00:16:15 +0000 (00:16 +0000)]
Daily bump.
From-SVN: r275833
Ian Lance Taylor [Tue, 17 Sep 2019 20:26:21 +0000 (20:26 +0000)]
runtime: for FFI, treat directIface types as pointers
This only matters on systems that pass a struct with a single pointer
field differently than passing a single pointer. I noticed it on
32-bit PPC, where the reflect package TestDirectIfaceMethod failed.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/195878
From-SVN: r275814
Ian Lance Taylor [Tue, 17 Sep 2019 20:24:00 +0000 (20:24 +0000)]
re PR go/91781 (r275691 breaks go test "reflect")
PR go/91781
reflect: promote integer closure return to full word
The libffi library expects an integer return type to be promoted to a
full word. Implement that when returning from a closure written in Go.
This only matters on big-endian systems when returning an integer smaller
than the pointer size, which is why we didn't notice it until now.
Fixes https://gcc.gnu.org/PR91781.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/195858
From-SVN: r275813
Ian Lance Taylor [Tue, 17 Sep 2019 17:22:18 +0000 (17:22 +0000)]
reflect: unexport FFICallbackGo; use go:linkname instead
The function was always intended to be internal-only, but was exported
so that C code could call it. Now that have go:linkname for that, use it.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/195857
From-SVN: r275809
Richard Sandiford [Tue, 17 Sep 2019 17:01:10 +0000 (17:01 +0000)]
[arm][aarch64] Handle no_insn in TARGET_SCHED_VARIABLE_ISSUE
Since no_insn patterns expand to no instructions, they shouldn't
count against the issue rate, just like USEs and CLOBBERs don't.
2019-09-17 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64.c (aarch64_sched_variable_issue): New
function.
(TARGET_SCHED_VARIABLE_ISSUE): New macro.
* config/arm/arm.c (arm_sched_variable_issue): New function.
(TARGET_SCHED_VARIABLE_ISSUE): New macro.
From-SVN: r275808
Richard Sandiford [Tue, 17 Sep 2019 17:00:58 +0000 (17:00 +0000)]
[arm][aarch64] Make no_insn issue to nothing
no_insn is documented as:
an insn which does not represent an instruction in the final output,
thus having no impact on scheduling.
and is used in that way by the arm port (e.g. for define_insns that
expand to comments). However, most scheduling descriptions instead
assigned units to no_insn patterns, in some cases treating them as more
expensive than a plain move.
This patch removes the no_insn handling from individual scheduling
descriptions and uses a common define_insn_reservation for all CPUs.
2019-09-17 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/arm/types.md (no_reservation): New reservation.
* config/aarch64/falkor.md (falkor_other_0_nothing): Don't handle
no_insn here.
* config/aarch64/saphira.md (saphira_other_0_nothing): Likewise.
* config/aarch64/thunderx2t99.md (thunderx2t99_nothing): Likewise.
* config/aarch64/tsv110.md (tsv110_alu): Likewise.
* config/arm/arm1020e.md (1020alu_op): Likewise.
* config/arm/arm1026ejs.md (alu_op): Likewise.
* config/arm/arm1136jfs.md (11_alu_op): Likewise.
* config/arm/arm926ejs.md (9_alu_op): Likewise.
* config/arm/cortex-a15.md (cortex_a15_alu): Likewise.
* config/arm/cortex-a17.md (cortex_a17_alu): Likewise.
* config/arm/cortex-a5.md (cortex_a5_alu): Likewise.
* config/arm/cortex-a53.md (cortex_a53_alu): Likewise.
* config/arm/cortex-a57.md (cortex_a57_alu): Likewise.
* config/arm/cortex-a7.md (cortex_a7_alu_shift): Likewise.
* config/arm/cortex-a8.md (cortex_a8_alu): Likewise.
* config/arm/cortex-a9.md (cortex_a9_dp): Likewise.
* config/arm/cortex-m4.md (cortex_m4_alu): Likewise.
* config/arm/cortex-m7.md (cortex_m7_alu_simple): Likewise.
* config/arm/cortex-r4.md (cortex_r4_alu_shift_reg): Likewise.
* config/arm/fa526.md (526_alu_op): Likewise.
* config/arm/fa606te.md (606te_alu_op): Likewise.
* config/arm/fa626te.md (626te_alu_op): Likewise.
* config/arm/fa726te.md (726te_alu_op): Likewise.
* config/arm/xgene1.md (xgene1_nop): Likewise.
From-SVN: r275807
Richard Sandiford [Tue, 17 Sep 2019 15:02:15 +0000 (15:02 +0000)]
[arm] Fix insn type of *thumb1_tablejump
*thumb1_tablejump had type "no_insn", which doesn't seems to correspond
to its documented use:
an insn which does not represent an instruction in the final output,
thus having no impact on scheduling.
Indirect jumps use the same instruction and have type "branch",
so the patch uses "branch" here too.
2019-09-17 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/arm/thumb1.md (*thumb1_tablejump): Change type from
"no_insn" to "branch".
From-SVN: r275806
Richard Sandiford [Tue, 17 Sep 2019 14:27:54 +0000 (14:27 +0000)]
Remove name of unused parameter in array-traits.h
2019-09-17 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* array-traits.h (array_traits<T[N]>::size): Remove parameter name.
From-SVN: r275805
Richard Biener [Tue, 17 Sep 2019 13:52:20 +0000 (13:52 +0000)]
re PR debug/91772 (ICE in add_dwarf_attr, at dwarf2out.c:4412 since r259749)
2019-09-17 Richard Biener <rguenther@suse.de>
PR debug/91772
* dwarf2out.c (dwarf2out_late_global_decl): If early dwarf
was missing generate locations only once.
From-SVN: r275804
Christophe Lyon [Tue, 17 Sep 2019 12:35:21 +0000 (14:35 +0200)]
[ARM/FDPIC v6 20/24] [ARM][testsuite] FDPIC: Skip tests using architectures unsupported by FDPIC
Since FDPIC currently supports arm and thumb-2 modes only, these tests
fail because they enforce an architecture version that doesn't match
these restrictions.
This patch introduces new values for the arm_arch effective-target
(v4t_thumb, v5t_thumb, v5te_thumb, v6_thumb, v6k_thumb, v6z_thumb) as
needed, and adds them to the relevant tests. In addition, it adds
v4t_arm, v5t_arm, v5te_arm, v6_arm, v6k_arm and v6z_arm to avoid
skipping some tests when GCC is configured to generate Thumb code by
default.
It also adds the corresponding non-thumb effective-target to the tests
that were missing it.
The existing v4t, v5t, v5te, v6 v6k and v6z effective-targets now force
-mfloat-abi=softfp since these thumb-1 targets do not support
hard-float anyway.
Finally, the patch removes the special case to detect the presence of
-marm in the flags, since it makes atomic_loaddi tests unsupported:
since the flags in question also include -march, the combination is
supported, while -marm alone is not if GCC is configured to target an
M-profile CPU.
2019-19-17 Christophe Lyon <christophe.lyon@st.com>
* lib/target-supports.exp
(check_effective_target_arm_arch_FUNC_ok): Add v4t_arm, v4t_thumb,
v5t_arm, v5t_thumb, v5te_arm, v5te_thumb, v6_arm, v6_thumb,
v6k_arm, v6k_thumb, v6z_arm, v6z_thumb.
Add -mfloat-abi=softfp to v4t, v5t, v5te, v6, v6k, v6z.
Remove early exit for -marm.
* gcc.target/arm/armv6-unaligned-load-ice.c: Add arm_arch
effective-target.
* gcc.target/arm/attr-unaligned-load-ice.c: Likewise.
* gcc.target/arm/ftest-armv4-arm.c: Likewise.
* gcc.target/arm/ftest-armv4t-arm.c: Likewise.
* gcc.target/arm/ftest-armv4t-thumb.c: Likewise.
* gcc.target/arm/ftest-armv5t-arm.c: Likewise.
* gcc.target/arm/ftest-armv5t-thumb.c: Likewise.
* gcc.target/arm/ftest-armv5te-arm.c: Likewise.
* gcc.target/arm/ftest-armv5te-thumb.c: Likewise.
* gcc.target/arm/ftest-armv6-arm.c: Likewise.
* gcc.target/arm/ftest-armv6-thumb.c: Likewise.
* gcc.target/arm/ftest-armv6k-arm.c: Likewise.
* gcc.target/arm/ftest-armv6k-thumb.c: Likewise.
* gcc.target/arm/ftest-armv6m-thumb.c: Likewise.
* gcc.target/arm/ftest-armv6t2-arm.c: Likewise.
* gcc.target/arm/ftest-armv6t2-thumb.c: Likewise.
* gcc.target/arm/ftest-armv6z-arm.c: Likewise.
* gcc.target/arm/ftest-armv6z-thumb.c: Likewise.
* gcc.target/arm/g2.c: Likewise.
* gcc.target/arm/macro_defs1.c: Likewise.
* gcc.target/arm/pr59858.c: Likewise.
* gcc.target/arm/pr65647-2.c: Likewise.
* gcc.target/arm/pr79058.c: Likewise.
* gcc.target/arm/pr83712.c: Likewise.
* gcc.target/arm/pragma_arch_switch_2.c: Likewise.
* gcc.target/arm/scd42-1.c: Likewise.
* gcc.target/arm/scd42-2.c: Likewise.
* gcc.target/arm/scd42-3.c: Likewise.
* gcc.c-torture/compile/pr82096.c: Fix arm_arch effective-target.
* gcc.target/arm/attr_arm-err.c: Likewise.
* gcc.target/arm/di-longlong64-sync-withldrexd.c: Likewise.
From-SVN: r275803
Feng Xue [Tue, 17 Sep 2019 12:30:08 +0000 (12:30 +0000)]
PR ipa/91089 - Setup predicate for switch default case in IPA
2019-09-17 Feng Xue <fxue@os.amperecomputing.com>
PR ipa/91089
* doc/invoke.texi (ipa-max-switch-predicate-bounds): Document new
option.
* params.def (PARAM_IPA_MAX_SWITCH_PREDICATE_BOUNDS): New.
* ipa-fnsummary.c (set_switch_stmt_execution_predicate): Add predicate
for switch default case using range analysis information.
2019-09-17 Feng Xue <fxue@os.amperecomputing.com>
PR ipa/91089
* gcc.dg/ipa/pr91089.c: New test.
From-SVN: r275802
Paul Thomas [Tue, 17 Sep 2019 08:30:50 +0000 (08:30 +0000)]
re PR fortran/91588 (ICE in check_inquiry, at fortran/expr.c:2673)
2019-09-17 Paul Thomas <pault@gcc.gnu.org>
PR fortran/91588
* expr.c (check_inquiry): Remove extended component refs by
using symbol pointers. If a function argument is an associate
variable with a constant target, copy the target expression in
place of the argument expression. Check that the charlen is not
NULL before using the string length.
(gfc_check_assign): Remove extraneous space.
2019-09-17 Paul Thomas <pault@gcc.gnu.org>
PR fortran/91588
* gfortran.dg/associate_49.f90 : New test.
From-SVN: r275800
Christophe Lyon [Tue, 17 Sep 2019 08:13:11 +0000 (08:13 +0000)]
[PR91749][arm] FDPIC: Handle -mflip-thumb
2019-09-16 Christophe Lyon <christophe.lyon@linaro.org>
PR target/91749
* config/arm/arm.c (arm_valid_target_attribute_rec): Make sure the
mode attributed is supported by FDPIC.
From-SVN: r275799
Richard Biener [Tue, 17 Sep 2019 08:08:40 +0000 (08:08 +0000)]
re PR tree-optimization/91790 (ICE: verify_ssa failed (error: definition in block 2 follows the use))
2019-09-17 Richard Biener <rguenther@suse.de>
PR tree-optimization/91790
* tree-vect-stmts.c (vectorizable_load): For BB vectorization
use the correct DR for setting up realignment.
From-SVN: r275798
Claire Dross [Tue, 17 Sep 2019 08:03:02 +0000 (08:03 +0000)]
[Ada] Add Remove primitive on functional maps
A primitive for removing a mapping from a functional map has been added.
2019-09-17 Claire Dross <dross@adacore.com>
gcc/ada/
* libgnat/a-cofuma.ads, libgnat/a-cofuma.adb (Remove): New
function which returns a copy of the input container without a
given mapping.
From-SVN: r275797
Yannick Moy [Tue, 17 Sep 2019 08:02:56 +0000 (08:02 +0000)]
[Ada] Fix rounding of fixed-point arithmetic operation
Fixed-point multiplication, division and conversion may lead to calling
the function Double_Divide in s-arit64 runtime unit. In the special case
where arguments have the special values X = -2**63 and the absolute
value of the product of its other arguments Y*Z = 2**64, the rounded
value should be either -1 or 1, but currently Double_Divide returns a
quotient of 0.
Rounding only applies when Round attribute is called on the arithmetic
operation for a decimal fixed-point result, or the result type is
integer.
This fixes correctly applies rounding away from 0 in that special case.
2019-09-17 Yannick Moy <moy@adacore.com>
gcc/ada/
* libgnat/s-arit64.adb (Double_Divide): Correctly handle the
special case when rounding.
gcc/testsuite/
* gnat.dg/fixedpnt7.adb: New testcase.
From-SVN: r275796
Javier Miranda [Tue, 17 Sep 2019 08:02:51 +0000 (08:02 +0000)]
[Ada] Missing propagation of Has_Predicates in cloned subtypes
The frontend silently skips propagating attributes Has_Predicates and
Predicate function to the internally built cloned subtype. This change
does not affect the functionality of the compiler; it leaves more clean
the decoration of internal entities.
2019-09-17 Javier Miranda <miranda@adacore.com>
gcc/ada/
* sem_ch3.adb (Complete_Private_Subtype): Propagate attributes
Has_Attributes and Predicate_Function to the cloned subtype.
From-SVN: r275795
Eric Botcazou [Tue, 17 Sep 2019 08:02:46 +0000 (08:02 +0000)]
[Ada] Fix ineffective -gnatyN for separate compilation units
This fixes a recent regression introduced in the machinery giving style
warnings: the -gnatyN switch no longer cancels an earlier -gnaty switch
for separate compilation units.
Running this command:
gcc -c slib.adb -gnatyaAbcefhiIklmM25OnprStux -gnatyN
On the following sources:
package Slib is
procedure I_Am_Short;
end Slib;
with Ada.Text_IO; use Ada.Text_IO;
package body Slib is
-- have a long line here as well.
procedure I_Am_Short is separate;
end Slib;
separate (Slib)
procedure I_Am_Short is
begin
Put_Line (".......................................................");
end I_Am_Short;
Should execute silently.
2019-09-17 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem.adb (Do_Analyze): Save Style_Check_Max_Line_Length on
entry and restore it on exit instead of recomputing it.
From-SVN: r275794
Tom Tromey [Tue, 17 Sep 2019 08:02:41 +0000 (08:02 +0000)]
[Ada] Update the character type comment in exp_dbug.ads
The character type comment in exp_dbug.ads documented the QU and QW
encodings, but did not document the plain "Qc" encoding, where 'c' is
the character itself. This patch updates the comment to follow the
implementation.
2019-09-17 Tom Tromey <tromey@adacore.com>
gcc/ada/
* exp_dbug.ads: Update character type comment.
From-SVN: r275793
Yannick Moy [Tue, 17 Sep 2019 08:02:35 +0000 (08:02 +0000)]
[Ada] Minor fixes mostly in comments of runtime arithmetic unit
Multiple comments in functions Double_Divide and Scaled_Divide were
incorrect. Now fixed.
Also change the expression (if Zhi /= 0 then Ylo * Zhi else 0) to the
simpler equivalent (Ylo * Zhi) in Double_Divide.
Also add a comment explaining why the implementation of Algorithm D for
multiple-precision division from the 2nd Edition of The Art of Computer
Programming does not suffer from two bugs discovered on that version.
There is no impact on execution, hence no test.
2019-09-17 Yannick Moy <moy@adacore.com>
gcc/ada/
* libgnat/s-arit64.adb (Double_Divide): Simplify needlessly
complex computation. Fix comments.
(Scaled_Divide): Fix comments. Explain why implementation does
not suffer from bugs in Algorithm D from 2nd Edition of TAOCP.
From-SVN: r275792
Yannick Moy [Tue, 17 Sep 2019 08:02:30 +0000 (08:02 +0000)]
[Ada] Raise Constraint_Error in overflow case involving rounding
Function Scaled_Divide in s-arith runtime unit computes the combined
multiplication and division of its arguments ((X*Y) / Z). In a very
special case where the quotient computed before rounding is 2**64-1,
then rounding may lead to undesirable wrap-around, leading to a computed
quotient of 0 instead of raising Constraint_Error as expected.
This function is only called in the runtime for arithmetic operations
involving fixed-point types. Rounding is performed only when the target
type is of a decimal fixed-point type, and the attribute 'Round of the
type is used to round the result of the arithmetic operation.
This fix correctly raises Constraint_Error in this special case.
2019-09-17 Yannick Moy <moy@adacore.com>
gcc/ada/
* libgnat/s-arit64.adb (Scaled_Divide): Add protection against
undesirable wrap-around.
gcc/testsuite/
* gnat.dg/multfixed.adb: New testcase.
From-SVN: r275791
Yannick Moy [Tue, 17 Sep 2019 08:02:25 +0000 (08:02 +0000)]
[Ada] Fix possible suppressed overflows in arithmetic run-time
Function Double_Divide computes the division of its parameters
(X / (Y*Z)) in a way that avoids overflows on signed integers, except in
two specific cases, when X = -2**63, abs(Y) = abs(Z) = 1 (leading to an
overflow in -To_Int(Qu)) and when X = -2**63 and Y*Z is large enough
that Qu=0 and so the remainder Ru=2**63 (leading to an overflow in
-To_Int(Ru)), for example with Y = Z = 2**32-1.
This fix avoids the overflow by applying "-" on the unsigned value
before the conversion to signed integer.
The issue cannot manifest as an overflow check failure in our runtime,
as overflow checks are suppressed by using pragma Suppress at the start
of the file. Assuming a machine implements wraparound semantics here,
the result was correct even with the suppressed overflow.
As a result, there can be no test showing the difference.
2019-09-17 Yannick Moy <moy@adacore.com>
gcc/ada/
* libgnat/s-arit64.adb (Double_Divide): Fix two possible
overflows.
From-SVN: r275790
Dmitriy Anisimkov [Tue, 17 Sep 2019 08:02:20 +0000 (08:02 +0000)]
[Ada] Force even timestamp in Windows ALI files
Old versions forced even file timestamp in Windows in
GNAT.OS_Lib.GM_Split implementation. We removed this time distortion in
GNAT.OS_Lib.GM_Split a few commits. But gprbuild became unnecessary
recompiling the sources in 50% cases, when the source has odd file
timestamp. This commit is restoring the compatibility between new
gprbuild and old GNAT compilers.
2019-09-17 Dmitriy Anisimkov <anisimko@adacore.com>
gcc/ada/
* make_util.ads (On_Windows): Move...
* osint.ads (On_Windows): There.
* osint.adb (OS_Time_To_GNAT_Time): If odd incremented on
Windows before conversion to Time_Stamp_Type.
From-SVN: r275789
Yannick Moy [Tue, 17 Sep 2019 08:02:15 +0000 (08:02 +0000)]
[Ada] GNATprove: avoid crash on illegal borrow during package elaboration
In GNATprove, a borrow during package elaboration is illegal, but a
crash could be issued when analyzing the corresponding declaration. Now
avoid analyzing the declaration in that case.
There is no test as this does not impact compilation.
2019-09-17 Yannick Moy <moy@adacore.com>
gcc/ada/
* sem_spark.adb (Check_Declaration): Do not check the assignment
from an illegal declaration.
From-SVN: r275788
Bob Duff [Tue, 17 Sep 2019 08:02:09 +0000 (08:02 +0000)]
[Ada] Clarify documentation for Stack_Usage
Clarify the documentation for Stack_Usage (both comments in the code,
and user documentation) to note that tools like Valgrind won't work.
2019-09-17 Bob Duff <duff@adacore.com>
gcc/ada/
* doc/gnat_ugn/gnat_and_program_execution.rst: Clarify
documentation.
* gnat_ugn.texi: Regenerate.
* libgnat/s-stausa.ads: Clarify comments.
From-SVN: r275787
Steve Baird [Tue, 17 Sep 2019 08:02:04 +0000 (08:02 +0000)]
[Ada] Don't accept illegal (e.g., Integer'(null)) generic actuals
Sem_Util.Wrong_Type usually emits an error message, but in some cases it
does not. The code which prevents emitting an error message was going
too far in some cases, causing illegal constructs to be accepted. For
example, a qualified expression such as Integer'(null) might be passed
in as an actual parameter in an instantiation of a generic and generate
no error message.
Running this command:
gcc -c inst.ads
On the following sources:
package Inst is
type Ptr is new Integer;
generic
type TElement is private;
NonDefini : TElement;
package ArbMgr is
end ArbMgr;
package Pack is new ArbMgr (Ptr, Ptr'(null));
procedure Dummy;
end Inst;
Should produce the following output:
inst.ads:10:42: expected type "Ptr" defined at line 2
inst.ads:10:42: found an access type
compilation abandoned due to previous error
2019-09-17 Steve Baird <baird@adacore.com>
gcc/ada/
* sem_util.adb (Wrong_Type): In deciding to suppress a message,
it is not enough for In_Instance to be True; in addition,
In_Generic_Actual (Expr) must be False.
* sem_type.adb (In_Generic_Actual): Fix bug where traversal of
parents skips every other node.
From-SVN: r275786
Claire Dross [Tue, 17 Sep 2019 08:01:58 +0000 (08:01 +0000)]
[Ada] Support chained calls to traversal functions in SPARK
This change only affects the SPARK toolset. In the part of semantic
analysis enforcing ownership rules for SPARK, it corrects a crash in
analysis of a declaration of a local borrower whose definition is a
chain of several calls to traversal functions.
2019-09-17 Claire Dross <dross@adacore.com>
gcc/ada/
* sem_spark.adb (Get_Observed_Or_Borrowed_Expr): If the
definition of a local borrower contains calls to traversal
functions, the borrowed expression is the first parameter of the
first traversal function call in the definition.
From-SVN: r275785
Ed Falis [Tue, 17 Sep 2019 08:01:53 +0000 (08:01 +0000)]
[Ada] Remove section on pragma No_Run_Time
This pragma has been long obsolescent and confuses users.
2019-09-17 Ed Falis <falis@adacore.com>
gcc/ada/
* doc/gnat_rm/implementation_defined_pragmas.rst: Remove
section.
* gnat_rm.texi, gnat_ugn.texi: Regenerate.
From-SVN: r275784
Vadim Godunko [Tue, 17 Sep 2019 08:01:48 +0000 (08:01 +0000)]
[Ada] Close file descriptors allocated for tty only once
2019-09-17 Vadim Godunko <godunko@adacore.com>
gcc/ada/
* libgnat/g-exptty.ads (Close_Input): New subprogram.
* libgnat/g-exptty.adb (Close_Input): New subprogram.
(Close): Move close of TTY to Close_Input.
* terminals.c (__gnat_close_tty): Set file descriptors to
invalid value after close.
From-SVN: r275783
Vadim Godunko [Tue, 17 Sep 2019 08:01:42 +0000 (08:01 +0000)]
[Ada] GNAT.Expect (Expect_Internal): Try to call 'poll' few times
'poll' returns -1 in case of any error (including interruption by a
signal), so call need to be repeated few times to avoid false failures.
2019-09-17 Vadim Godunko <godunko@adacore.com>
gcc/ada/
* libgnat/g-expect.adb (Expect_Internal): Try to call 'poll' few
times.
From-SVN: r275782
Vadim Godunko [Tue, 17 Sep 2019 08:01:37 +0000 (08:01 +0000)]
[Ada] Avoid to close irrelevant file descriptors
'Close' subprogram of GNAT.Expect can close irrelevant file descriptors
when 'Expect' was terminated by Process_Died exception and any file open
operations was done before call to 'Close'.
2019-09-17 Vadim Godunko <godunko@adacore.com>
gcc/ada/
* libgnat/g-expect.ads, libgnat/g-expect.adb (Close_Input): New
subprogram.
(Get_Command_Output): Call Close_Input to close input stream.
(Expect_Internal): Likewise.
(Close): Likewise.
* libgnat/g-exptty.adb (Close): Likewise.
gcc/testsuite/
* gnat.dg/expect3.adb: New testcase.
From-SVN: r275781
Piotr Trojanek [Tue, 17 Sep 2019 08:01:23 +0000 (08:01 +0000)]
[Ada] A new utility routine for detecting attribute 'Old
Add a utility routine for detecting attribute 'Old. It will be
immediately reused in the GNATprove backend.
2019-09-17 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* sem_util.ads, sem_util.adb (Is_Attribute_Old): New utility
routine.
From-SVN: r275780
Yannick Moy [Tue, 17 Sep 2019 08:01:10 +0000 (08:01 +0000)]
[Ada] Do not inline dispatching operations in GNATprove mode
In GNATprove, local subprograms without contracts are candidates for
inlining, so that they are only analyzed in the context of their calls.
This does not apply to dispatching operations, which may be called
through dispatching, in an unknown calling context. Hence such
operations should not be considered as candidates for inlining.
There is no test as this has no effect on compilation.
2019-09-17 Yannick Moy <moy@adacore.com>
gcc/ada/
* inline.adb (Can_Be_Inlined_In_GNATprove_Mode): Add handling
for dispatching operations.
From-SVN: r275779
Ed Schonberg [Tue, 17 Sep 2019 08:00:07 +0000 (08:00 +0000)]
[Ada] In a generic use Presanalyze_Spec_Expression on Predicates
When verifying that the meaning of an aspect has not changed between the
freeze point of the entity and the end of the declarations, we analkyze
a copy of the expression to verify its conformance to previous analysis.
If the expression contains overloaded references, these have to be
resolved, which is not done if the expression is only preanalyzed. This
applies in particular to expressions in predicates.
2019-09-17 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sem_ch13.adb (Check_Aspect_At_End_Of_Declarations): In a
generic context, for a Predicate aspect, use
Preanalyze_Spec_Expression to verify conformance.
gcc/testsuite/
* gnat.dg/predicate13.adb, gnat.dg/predicate13.ads: New
testcase.
From-SVN: r275778
Javier Miranda [Tue, 17 Sep 2019 07:59:58 +0000 (07:59 +0000)]
[Ada] Missing tagged type decoration in corresponding record subtypes
The frontend silently skips propagating attribute Is_Tagged_Type to the
constrained corresponding record subtype associated with a protected
type or task type with discriminants. This change does not affect the
functionality of the compiler; it leaves more clean the decoration of
internal entities.
2019-09-17 Javier Miranda <miranda@adacore.com>
gcc/ada/
* sem_ch3.adb (Constrain_Corresponding_Record): Propagate
attribute Is_Tagged_Type.
From-SVN: r275777
Javier Miranda [Tue, 17 Sep 2019 07:59:53 +0000 (07:59 +0000)]
[Ada] Ada 2020: Raise expressions in limited contexts (AI12-0172)
This patch adds support for the use of raise expressions in more
limited contexts (as described in the Ada Isssue AI12-0172).
2019-09-17 Javier Miranda <miranda@adacore.com>
gcc/ada/
* exp_ch3.adb (Build_Record_Init_Proc): Do not generate code to
adjust the tag component when the record is initialized with a
raise expression.
* sem_aggr.adb (Valid_Limited_Ancestor): Return True for
N_Raise_Expression nodes.
(Valid_Ancestor_Type): Return True for raise expressions.
* sem_ch3.adb (Analyze_Component_Declaration): Do not report an
error when a component is initialized with a raise expression.
* sem_ch4.adb (Analyze_Qualified_Expression): Do not report an
error when the aggregate has a raise expression.
gcc/testsuite/
* gnat.dg/limited4.adb: New testcase.
From-SVN: r275776
Piotr Trojanek [Tue, 17 Sep 2019 07:59:48 +0000 (07:59 +0000)]
[Ada] Ignore missing ALI files in GNATprove mode
This change only affects GNATprove backend, where it avoids spurious
errors on missing ALI files for units indirectly withed from the current
unit and processed as part of a different .gpr project.
No test provided, because only GNATprove is affected.
2019-09-17 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* ali.ads: Fix casing in comment.
* ali-util.ads, ali-util.adb (Read_Withed_ALIs): Remove
Ignore_Errors parameter; it was only set to non-default value of
True when running in GNATprove_Mode and wrongly reset to False
when calling this routine recursively. Now in GNATprove mode we
want it to be always True, so in fact it is equivalent to
GNATProve_Mode flag itself (which was already used in this
routine).
From-SVN: r275775
Arnaud Charlet [Tue, 17 Sep 2019 07:59:43 +0000 (07:59 +0000)]
[Ada] PR ada/91268 Do not redefine macros
This should fix PR ada/91268 by only defining macros if not already
done.
2019-09-17 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* adaint.c (_REENTRANT, _THREAD_SAFE): Only define if needed.
From-SVN: r275774
Arnaud Charlet [Tue, 17 Sep 2019 07:59:38 +0000 (07:59 +0000)]
[Ada] Refine change for bit-packed slices
We use Long_Long_Integer'Size / 2 instead of 4 * 8 to support
specifying a target configuration file where the largest integer is
32 bits instead of 64.
2019-09-17 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* libgnat/s-bitfie.ads (Val_Bits, Val_Bytes): Define from
Long_Long_Integer'Size.
From-SVN: r275773