The param_type constructors of each random number distribution should
mirror the constructors of the distribution itself, so make the same
changes w.r.t explicit on default constructors.
Daniel Trebbien [Thu, 14 Jun 2018 09:26:51 +0000 (09:26 +0000)]
PR libstdc++/83982 fix exception-safety guarantee of std::vector::resize
Construct new elements before moving existing ones, so that if a default
constructor throws, the existing elements are not left in a moved-from
state.
2018-06-14 Daniel Trebbien <dtrebbien@gmail.com>
Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/83982
* include/bits/vector.tcc (vector::_M_default_append(size_type)):
Default-construct new elements before moving existing ones.
* testsuite/23_containers/vector/capacity/resize/strong_guarantee.cc:
New.
Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>
From-SVN: r261585
Sebastian Huber [Thu, 14 Jun 2018 05:10:51 +0000 (05:10 +0000)]
RTEMS: Prefer int for int32_t
Common systems like glibc and FreeBSD define int32_t to int. This means
a lot of third party code works well in these cases:
#include <stdint.h>
void f(int32_t);
void f(int);
void g(int32_t *);
void h(void)
{
int i;
g(&i);
}
On RTEMS you got however in C
test.c:5:6: error: conflicting types for 'f'
void f(int);
^
test.c:3:6: note: previous declaration of 'f' was here
void f(int32_t);
^
test.c: In function 'h':
test.c:12:4: warning: passing argument 1 of 'g' from incompatible
pointer type [-Wincompatible-pointer-types]
g(&i);
^
test.c:7:6: note: expected 'int32_t * {aka long int *}' but argument
is of type 'int *' void g(int32_t *);
and C++
test.c: In function 'void h()':
test.c:12:4: error: invalid conversion from 'int*' to 'int32_t* {aka
long int*}' [-fpermissive]
g(&i);
^~
test.c:7:6: note: initializing argument 1 of 'void g(int32_t*)'
void g(int32_t *);
^
This was due to a Newlib speciality which uses long for int32_t if long
is a 32-bit type. To ease the use of third party software in RTEMS we
override this Newlib option now and use int for int32_t if int is a
32-bit type.
The traversal used by the write barrier insertion phase can sometimes
wind up visiting new statements inserted during the traversal, which
then results in duplicate / redundant write barrier guards. Example
program to reproduce:
package small
type S struct {
N *S
K int
}
var G *S = &S{N: nil, K: 101}
This patch changes the traversal code to keep track of statements
already added and avoid processing them again later in the traversal.
Jason Merrill [Wed, 13 Jun 2018 19:39:36 +0000 (15:39 -0400)]
PR c++/86094 - wrong code with defaulted move ctor.
gcc/c-family/
* c-opts.c (c_common_post_options): Bump the current ABI version to
13. Set warn_abi_version and flag_abi_compat_version to the current
version rather than 0. Fix defaulting flag_abi_compat_version from
warn_abi_version.
gcc/cp/
* class.c (classtype_has_non_deleted_move_ctor): New.
* tree.c (maybe_warn_parm_abi, type_has_nontrivial_copy_init):
Handle v12 breakage.
Ian Lance Taylor [Wed, 13 Jun 2018 17:24:45 +0000 (17:24 +0000)]
compiler: include global variable preinit blocks in ast dumps
Dump out the blocks corresponding to variable pre-inits when
-fgo-dump-ast is in effect. Each preinit block is prefixed with a
comment indicating the variable it is initializing.
There is no need to use an allocator of the correct value_type when
calling allocator_traits::construct and allocator_traits::destroy. The
existing node allocator can be used, instead of constructing a new
allocator object every time.
There's also no benefit to using __gnu_cxx::__alloc_traits instead of
std::allocator_traits to get the pointer and const_pointer types.
std::forward_list is only available for C++11 and later, when
std::allocator_traits is available too.
PR libstdc++/86127
* include/bits/forward_list.h (_Fwd_list_base::_Tp_alloc_type): Remove
unused typedef.
(_Fwd_list_base::_Node_alloc_traits): Use allocator_traits instead of
__gnu_cxx::__alloc_traits.
(_Fwd_list_base::_M_create_node, _Fwd_list_base::_M_erase_after):
Use node allocator to create and destroy elements.
(forward_list::_Tp_alloc_type): Remove unused typedef.
(forward_list::_Alloc_traits): Use allocator_traits instead of
__gnu_cxx::__alloc_traits.
Richard Biener [Wed, 13 Jun 2018 15:03:50 +0000 (15:03 +0000)]
tree-vect-patterns.c (vect_recog_vector_vector_shift_pattern): Properly set vector type of the intermediate stmt.
2018-06-13 Richard Biener <rguenther@suse.de>
* tree-vect-patterns.c (vect_recog_vector_vector_shift_pattern):
Properly set vector type of the intermediate stmt.
* tree-vect-stmts.c (vectorizable_operation): The destination
var always has vectype_out type.
David Malcolm [Wed, 13 Jun 2018 13:43:32 +0000 (13:43 +0000)]
emit-rtl.c: more typesafety
This patch converts various rtx to rtx_insn * (or rtx_code_label *).
It also convert the various "_loc" params from int to location_t
gcc/ChangeLog:
* config/arc/arc.c (hwloop_optimize): Strengthen local "end_label"
from rtx to rtx_insn *.
* config/bfin/bfin.c (hwloop_optimize): Likewise for local
"label".
(add_sched_insns_for_speculation): Likewise for local "target",
converting usage of JUMP_LABEL to JUMP_LABEL_AS_INSN.
* config/c6x/c6x.c (reorg_split_calls): Strengthen param "call_labels"
from rtx_insn ** to rtx_code_label **.
(reorg_emit_nops): Likewise.
(c6x_reorg): Likewise for local "call_labels".
* config/sh/sh-protos.h (get_dest_uid): Strengthen 1st param from
rtx to rtx_insn *.
* config/sh/sh.c (dump_table): Strengthen local "lab" from rtx to
rtx_code_label *, adding safe_as_a <rtx_code_label *> casts to
the loops over LABEL_REFS.
(fixup_addr_diff_vecs): Add as_a <rtx_insn *> to usage of
braf_label.
(barrier_align): Convert usage of JUMP_LABEL to JUMP_LABEL_AS_INSN.
(get_dest_uid): Strengthen param "label" from rtx to rtx_insn *.
(split_branches): Strengthen local "olabel" from rtx to
rtx_insn *, adding a safe_as_a cast.
* emit-rtl.c (next_real_insn): Strengthen param from "rtx"
to "rtx_insn *".
(add_insn_after): Likewise for first two params.
(add_insn_before): Likewise.
(remove_insn): Likewise for param.
(emit_pattern_before_noloc): Likewise for second and third params.
(emit_jump_insn_before_noloc): Convert NULL_RTX to NULL.
(emit_call_insn_before_noloc): Likewise.
(emit_debug_insn_before_noloc): Strengthen "before" param from "rtx"
to "rtx_insn *".
(emit_barrier_before): Likewise.
(emit_label_before): Strengthen "label" param from "rtx" to
"rtx_code_label *". Strengthen "before" param from "rtx" to
"rtx_insn *".
(emit_insn_after_1): Strengthen "after" param from "rtx" to
"rtx_insn *".
(emit_pattern_after_noloc): Likewise.
(emit_insn_after_noloc): Likewise.
(emit_jump_insn_after_noloc): Likewise.
(emit_call_insn_after_noloc): Likewise.
(emit_debug_insn_after_noloc): Likewise.
(emit_barrier_after): Likewise.
(emit_label_after): Likewise for both params.
(emit_pattern_after_setloc): Likewise for "after" param. Convert
"loc" param from "int" to "location_t".
(emit_insn_after_setloc): Likewise.
(emit_jump_insn_after_setloc): Likewise.
(emit_call_insn_after_setloc): Likewise.
(emit_debug_insn_after_setloc): Likewise.
(emit_pattern_before_setloc): Likewise for "before" param. Convert
"loc" param from "int" to "location_t".
(emit_pattern_before): Convert NULL_RTX to NULL.
(emit_insn_before_setloc): Convert "loc" param from "int" to
"location_t".
(emit_jump_insn_before_setloc): Likewise.
(emit_call_insn_before_setloc): Likewise.
(emit_debug_insn_before_setloc): Strengthen "before" param from rtx to
rtx_insn *. Convert "loc" param from "int" to "location_t".
* rtl.h (emit_insn_before_setloc, emit_jump_insn_before_setloc,
emit_call_insn_before_setloc, emit_debug_insn_before_setloc):
Convert 3rd param from "int" to "location_t".
(emit_barrier_before, emit_barrier_after, next_real_insn):
Strengthen param from rtx to rtx_insn *.
(emit_label_before): Strengthen 1st param from "rtx" to
"rtx_code_label *". Strengthen 2nd param from "rtx" to
"rtx_insn *".
(emit_insn_after_noloc, emit_jump_insn_after_noloc,
emit_call_insn_after_noloc, emit_debug_insn_after_noloc):
Strengthen 2nd param from "rtx" to "rtx_insn *".
(emit_insn_after_setloc, emit_jump_insn_after_setloc)
emit_call_insn_after_setloc, emit_debug_insn_after_setloc):
Likewise. Convert 3rd param from "int" to "location_t".
(emit_label_after): Strengthen 1st param from "rtx" to
"rtx_code_label *".
(next_real_insn, remove_insn): Strengthen param from "rtx" to
"rtx_insn *".
(add_insn_before, add_insn_after): Strengthen 1st and 2nd params
from "rtx" to "rtx_insn *".
Eric Botcazou [Wed, 13 Jun 2018 11:20:23 +0000 (11:20 +0000)]
re PR target/86048 (.seh_savexmm offset is negative error when compiling libpng)
PR target/86048
* config/i386/winnt.c (i386_pe_seh_cold_init): Do not emit negative
offsets for register save directives. Emit a second batch of save
directives, if need be, when the function accesses prior frames.
[ARC] Reimplement return padding operation for ARC700.
For ARC700, adding padding if necessary to avoid a mispredict. A
return could happen immediately after the function start. A
call/return and return/return must be 6 bytes apart to avoid
mispredict.
The old implementation was doing this operation very late in the
compilation process, and the additional nop instructions and/or
forcing some other instruction to take their long form was not taken
into account when generating brcc instructions. Thus, wrong code could
be generated.
* config/arc/arc-protos.h (arc_pad_return): Remove.
* config/arc/arc.c (machine_function): Remove force_short_suffix
and size_reason.
(arc_print_operand): Adjust printing of '&'.
(arc_verify_short): Remove conditional printing of short suffix.
(arc_final_prescan_insn): Remove reference to size_reason.
(pad_return): New function.
(arc_reorg): Call pad_return.
(arc_pad_return): Remove.
(arc_init_machine_status): Remove reference to force_short_suffix.
* config/arc/arc.md (vunspec): Add VUNSPEC_ARC_BLOCKAGE.
(attr length): When attribute iscompact is true force to 2
regardless; in the case of maybe check if we want to force the
instruction to have 4 bytes length.
(nopv): Change it to generate 4 byte long nop as well.
(blockage): New pattern.
(simple_return): Remove call to arc_pad_return.
(p_return_i): Likewise.
after creating loop allocnos. It happens that the ALLOCNO_WMODEs for
both 112 and 517 were not set to V2DI due to another bug that I'll post
a separate patch for, but we nevertheless got a valid allocation of
register 1.
LRA's first try at constraining the instruction gave:
Choosing alt 5 in insn 74: (0) ?w (1) r {*aarch64_simd_movv2di}
at which point all was good. But LRA later decided it needed
to spill r517:
Spill r517 after risky transformations
so the next constraint attempt gave:
Choosing alt 0 in insn 74: (0) =w (1) m {*aarch64_simd_movv2di}
which was still good. Then during inheritance we had:
Creating newreg=672 from oldreg=517, assigning class GENERAL_REGS to inheritance r672
Original reg change 517->672 (bb8):
74: r287:V2DI=r672:DI#0
Add inheritance<-original before:
939: r672:DI=r517:DI
Use smallest class of POINTER_REGS and GENERAL_REGS
Creating newreg=673 from oldreg=517, assigning class POINTER_REGS to inheritance r673
Original reg change 517->673 (bb8):
936: r669:DI=r673:DI
Add inheritance<-original before:
940: r673:DI=r517:DI
("Use smallest class of POINTER_REGS and GENERAL_REGS" ought to
give GENERAL_REGS. That might be a missed optimisation, and probably
due to both classes having the same number of allocatable registers.
I'll look at that as a follow-on.)
Thus LRA created two inheritance registers for r517, one (r673)
that included the unallocatable x31 and another (r672) that didn't.
The r672 references included the paradoxical subreg in insn 74 but the
r673 ones didn't. LRA then allocated x30 to r673, which was a valid
choice.
Later LRA decided to "undo" the inheritance for insn 620, but because
of the double inheritance, it got confused as to what the original
situation was, and made insn 74 use the other inheritance register
instead of r517:
********** Undoing inheritance #2: **********
Inherit 11 out of 12 (91.67%)
Insn after restoring regs:
620: r572:DI=r517:DI
REG_DEAD r517:DI
Change reload insn:
74: r287:V2DI=r673:DI#0 <-------------------
Insn after restoring regs:
939: r517:DI=r673:DI
REG_DEAD r673:DI
This might be a bug in itself: we should probably look through sets
of other inheritance pseudos to find the "real" origin.
Either way, at this point we had a situation in which r673 was used in an
insn whose subreg was larger than the biggest_mode that r673 had when it
was allocated. While x30 was valid for the original biggest_mode, it
wasn't valid for this subreg use.
The next attempt to constrain insn 74 was:
Choosing alt 5 in insn 74: (0) ?w (1) r {*aarch64_simd_movv2di}
Creating newreg=684, assigning class GENERAL_REGS to r684
74: r287:V2DI=r684:V2DI
Inserting insn reload before:
951: r684:V2DI=r673:DI#0
where LRA reloaded the SUBREG rather than the SUBREG_REG. And it
then cycled trying the same thing when reloading the reload (and the
reload of the reload, etc.).
What it should be doing here is reloading the SUBREG_REG instead.
There's already code to cope with this case when the paradoxical
subreg falls outside the class (which isn't true here, since r673
is POINTER_REGS and POINTER_REGS includes x31). But I think we
should also test whether LRA is entitled to allocate the spanned
registers. Not doing that seems like a bug regardless of the above
missed optimisation and the mix-up undoing inheritance.
2018-05-30 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* lra-constraints.c (simplify_operand_subreg): In the paradoxical
case, check whether the outer register overlaps an unallocatable
register, not just whether it fits the required class.
gcc/testsuite/
* g++.dg/torture/aarch64-vect-init-1.C: New test.
Use poly_int rtx accessors instead of hwi accessors
This patch generalises various places that used hwi rtx accessors so
that they can handle poly_ints instead. In many cases these changes
are by inspection rather than because something had shown them to be
necessary.
2018-06-12 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* poly-int.h (can_div_trunc_p): Add new overload in which all values
are poly_ints.
* alias.c (get_addr): Extend CONST_INT handling to poly_int_rtx_p.
(memrefs_conflict_p): Likewise.
(init_alias_analysis): Likewise.
* cfgexpand.c (expand_debug_expr): Likewise.
* combine.c (combine_simplify_rtx, force_int_to_mode): Likewise.
* cse.c (fold_rtx): Likewise.
* explow.c (adjust_stack, anti_adjust_stack): Likewise.
* expr.c (emit_block_move_hints): Likewise.
(clear_storage_hints, push_block, emit_push_insn): Likewise.
(store_expr_with_bounds, reduce_to_bit_field_precision): Likewise.
(emit_group_load_1): Use rtx_to_poly_int64 for group offsets.
(emit_group_store): Likewise.
(find_args_size_adjust): Use strip_offset. Use rtx_to_poly_int64
to read the PRE/POST_MODIFY increment.
* calls.c (store_one_arg): Use strip_offset.
* rtlanal.c (rtx_addr_can_trap_p_1): Extend CONST_INT handling to
poly_int_rtx_p.
(set_noop_p): Use rtx_to_poly_int64 for the elements selected
by a VEC_SELECT.
* simplify-rtx.c (avoid_constant_pool_reference): Use strip_offset.
(simplify_binary_operation_1): Extend CONST_INT handling to
poly_int_rtx_p.
* var-tracking.c (compute_cfa_pointer): Take a poly_int64 rather
than a HOST_WIDE_INT.
(hard_frame_pointer_adjustment): Change from HOST_WIDE_INT to
poly_int64.
(adjust_mems, add_stores): Update accodingly.
(vt_canonicalize_addr): Track polynomial offsets.
(emit_note_insn_var_location): Likewise.
(vt_add_function_parameter): Likewise.
(vt_initialize): Likewise.
Marek Polacek [Tue, 12 Jun 2018 20:20:11 +0000 (20:20 +0000)]
Core issue 1331 - const mismatch with defaulted copy constructor
Core issue 1331 - const mismatch with defaulted copy constructor
* class.c (check_bases_and_members): When checking a defaulted
function, mark it as deleted rather than giving an error.
* g++.dg/cpp0x/defaulted15.C (struct F): Remove dg-error.
* g++.dg/cpp0x/defaulted52.C: New test.
* g++.dg/cpp0x/defaulted53.C: New test.
* g++.dg/cpp0x/defaulted54.C: New test.
* g++.dg/cpp0x/defaulted55.C: New test.
* g++.dg/cpp0x/defaulted56.C: New test.
* g++.dg/cpp0x/defaulted57.C: New test.
* g++.dg/cpp0x/defaulted58.C: New test.
* g++.dg/cpp0x/defaulted59.C: New test.
* g++.dg/cpp0x/defaulted60.C: New test.
Will Schmidt [Tue, 12 Jun 2018 15:54:17 +0000 (15:54 +0000)]
fold-vec-load-vec_xl-char.c: New testcase.
[testsuite]
2018-06-12 Will Schmidt <will_schmidt@vnet.ibm.com>
* gcc.target/powerpc/fold-vec-load-vec_xl-char.c: New testcase.
* gcc.target/powerpc/fold-vec-load-vec_xl-double.c: New testcase.
* gcc.target/powerpc/fold-vec-load-vec_xl-float.c: New testcase.
* gcc.target/powerpc/fold-vec-load-vec_xl-int.c: New testcase.
* gcc.target/powerpc/fold-vec-load-vec_xl-longlong.c: New testcase.
* gcc.target/powerpc/fold-vec-load-vec_xl-short.c: New testcase.
to reduce the size of __private_tm to make room for __private_ss, which
was supposed to be used for TARGET_THREAD_SPLIT_STACK_OFFSET:
typedef struct
{
void *tcb; /* Pointer to the TCB. Not necessarily the
thread descriptor used by libpthread. */
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
int multiple_threads;
uintptr_t sysinfo;
uintptr_t stack_guard;
uintptr_t pointer_guard;
int gscope_flag;
int __glibc_reserved1;
/* Reservation of some values for the TM ABI. */
void *__private_tm[4];
/* GCC split stack support. */
void *__private_ss;
} tcbhead_t;
But the offset of __private_ss for i386 was mistakenly set to 0x30,
instead of 0x34 and libgcc/config/i386/morestack.S has:
cmpl %gs:0x30,%eax # See if we have enough space.
movl %eax,%gs:0x30 # Save the new stack boundary.
movl %eax,%gs:0x30 # Save the new stack boundary.
movl %ecx,%gs:0x30 # Save new stack boundary.
movl %eax,%gs:0x30
movl %gs:0x30,%eax
movl %eax,%gs:0x30
Since update TARGET_THREAD_SPLIT_STACK_OFFSET changes split stack ABI,
glibc 2.28 has been changed by
i386: Change offset of __private_ss to 0x30 [BZ #23250]
to match GCC:
typedef struct
{
void *tcb; /* Pointer to the TCB. Not necessarily the
thread descriptor used by libpthread. */
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
int multiple_threads;
uintptr_t sysinfo;
uintptr_t stack_guard;
uintptr_t pointer_guard;
int gscope_flag;
int __glibc_reserved1;
/* Reservation of some values for the TM ABI. */
void *__private_tm[3];
/* GCC split stack support. */
void *__private_ss;
void *__glibc_reserved2;
} tcbhead_t;
When we pass an mcpu to the compiler we have two types of (hardware
configuration) flags that are set:
1. Architecture specific, for example code-density is always enabled
for ARCHS architectures. These options are overwriting whatever the
corresponding user options with the preset ones.
2. CPU specific, for example archs is using LL64 option by
default. These options can be freely enabled or disabled.
Because of the above complexity, we need to throw some errors for the
user to know when he/she does something which goes against the above
rules. Thus, I came up with the following set of rules:
1. Overwriting default architecture specific hardware option: it is
ignored, a warning is thrown;
2. Overwriting default CPU specific hardware option: it is taken into
account, a warning is thrown.
H.J. Lu [Tue, 12 Jun 2018 11:08:52 +0000 (11:08 +0000)]
libitm/x86: Correct offsets of __private_tm and pointer_guard
In glibc, sysdeps/i386/nptl/tls.h has
typedef struct
{
void *tcb; /* Pointer to the TCB. Not necessarily the
thread descriptor used by libpthread. */
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
int multiple_threads;
uintptr_t sysinfo;
uintptr_t stack_guard;
uintptr_t pointer_guard;
int gscope_flag;
int __glibc_reserved1;
/* Reservation of some values for the TM ABI. */
void *__private_tm[4];
/* GCC split stack support. */
void *__private_ss;
} tcbhead_t;
and sysdeps/x86_64/nptl/tls.h has
typedef struct
{
void *tcb; /* Pointer to the TCB. Not necessarily the
thread descriptor used by libpthread. */
dtv_t *dtv;
void *self; /* Pointer to the thread descriptor. */
int multiple_threads;
int gscope_flag;
uintptr_t sysinfo;
uintptr_t stack_guard;
uintptr_t pointer_guard;
unsigned long int vgetcpu_cache[2];
int __glibc_reserved1;
int __glibc_unused1;
/* Reservation of some values for the TM ABI. */
void *__private_tm[4];
/* GCC split stack support. */
void *__private_ss;
long int __glibc_reserved2;
/* Must be kept even if it is no longer used by glibc since programs,
like AddressSanitizer, depend on the size of tcbhead_t. */
__128bits __glibc_unused2[8][4] __attribute__ ((aligned (32)));
SEG_READ, SEG_WRITE, SEG_DECODE_READ and SEG_ENCODE_WRITE were correct
only for x86-64.
Update SEG_READ and SEG_WRITE to use the offset of __private_tm as base
and correct the offset of pointer_guard for x32. This patch doesn't
change ABI of libitm.
PR libitm/85988
* config/linux/x86/tls.h (SEG_READ): Use the offset of
__private_tm as base.
(SEG_WRITE): Likewise.
(SEG_ENCODE_WRITE): Correct the offset of pointer_guard for x32.
(gtm_thr): Replace SEG_READ(10) with SEG_READ(0).
(set_gtm_thr): Replace SEG_WRITE(10) with SEG_WRITE(0).
(abi_disp): Replace SEG_DECODE_READ(11) with SEG_DECODE_READ(1).
(set_abi_disp): Replace SEG_ENCODE_WRITE(11) with
SEG_ENCODE_WRITE(1).
Matthew Fortune [Tue, 12 Jun 2018 10:36:12 +0000 (10:36 +0000)]
MIPS: Add i6500 processor as an alias for i6400.
gcc/ChangeLog:
2018-06-12 Matthew Fortune <mfortune@gmail.com>
* config/mips/mips-cpus.def: New MIPS_CPU for i6500.
* config/mips/mips-tables.opt: Regenerate.
* config/mips/mips.h (MIPS_ISA_LEVEL_SPEC): Mark i6500 as
mips64r6.
* doc/invoke.texi: Document -march=i6500.
Eric Botcazou [Tue, 12 Jun 2018 10:34:26 +0000 (10:34 +0000)]
ada-tree.h (TYPE_RETURN_BY_DIRECT_REF_P): Change from using TYPE_LANG_FLAG_4 to using TYPE_LANG_FLAG_0.
* gcc-interface/ada-tree.h (TYPE_RETURN_BY_DIRECT_REF_P): Change from
using TYPE_LANG_FLAG_4 to using TYPE_LANG_FLAG_0.
(TYPE_ALIGN_OK): Move around.
(TYPE_PADDING_FOR_COMPONENT): Remove superfluous parentheses.
* gcc-interface/decl.c (change_qualified_type): Move to...
(gnat_to_gnu_entity): Adjust comment.
* gcc-interface/gigi.h (change_qualified_type): ...here; make inline.
(ceil_pow2): Use ceil_log2.
* gcc-interface/utils.c (finish_subprog_decl): Add couple of comments
and do not set TREE_SIDE_EFFECTS.
(handle_noreturn_attribute): Use change_qualified_type.
Eric Botcazou [Tue, 12 Jun 2018 10:19:40 +0000 (10:19 +0000)]
decl.c (gnat_to_gnu_entity): Do not get the expression of a dispatch table that is not being defined.
* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Constant>: Do not get
the expression of a dispatch table that is not being defined.
<E_Record_Subtype>: Remove obsolete kludge.
Eric Botcazou [Tue, 12 Jun 2018 10:01:36 +0000 (10:01 +0000)]
decl.c (warn_on_field_placement): Use specific wording for discriminants.
* gcc-interface/decl.c (warn_on_field_placement): Use specific wording
for discriminants.
(warn_on_list_placement): New static function.
(components_to_record): Use it to warn on multiple fields in list.
Eric Botcazou [Tue, 12 Jun 2018 09:51:26 +0000 (09:51 +0000)]
decl.c (variant_desc): Add AUX field.
* gcc-interface/decl.c (variant_desc): Add AUX field.
(gnat_to_gnu_entity) <discrete_type>: Do not call compute_record_mode
directly.
(reverse_sort_field_list): New static function.
(components_to_record): Place the variant part at the beginning of the
field list when there is an obvious order of increasing position.
(build_variant_list): Initialize it.
(create_variant_part_from): Do not call compute_record_mode directly.
(copy_and_substitute_in_layout): Likewise. Always sort the fields with
fixed position in order of increasing position, in the record and all
the variants, in any. Call reverse_sort_field_list.
* gcc-interface/utils.c (make_packable_type): Compute the sizes before
calling finish_record_type. Do not call compute_record_mode directly.
(finish_record_type): Overhaul final processing depending on REP_LEVEL
and call finish_bitfield_layout if it is equal to one or two.
Eric Botcazou [Tue, 12 Jun 2018 06:52:55 +0000 (06:52 +0000)]
gcc.c: Document new %@{...} sequence.
* gcc.c: Document new %@{...} sequence.
(LINK_COMMAND_SPEC): Use it for the -L switches.
(cpp_unique_options): Use it for the -I switches.
(at_file_argbuf): New global variable.
(in_at_file): Likewise.
(alloc_args): Create at_file_argbuf.
(clear_args): Truncate at_file_argbuf.
(store_arg): If in_at_file, push the argument onto at_file_argbuf.
(open_at_file): New function.
(close_at_file): Likewise.
(create_at_file): Delete.
(do_spec_1) <'i'>: Use open_at_file/close_at_file.
<'o'>: Likewise.
<'@'>: New case.
(validate_switches_from_spec): Deal with %@{...} sequence.
(validate_switches): Likewise.
(driver::finalize): Call clear_args.
Paolo Carlini [Mon, 11 Jun 2018 21:13:41 +0000 (21:13 +0000)]
decl.c (grok_op_properties): Consistently use the location of the decl...
/cp
2018-06-11 Paolo Carlini <paolo.carlini@oracle.com>
* decl.c (grok_op_properties): Consistently use the location
of the decl; remove special casing of POSTINCREMENT_EXPR and
POSTDECREMENT_EXPR wrt default arguments.
/testsuite
2018-06-11 Paolo Carlini <paolo.carlini@oracle.com>
Paolo Carlini [Mon, 11 Jun 2018 21:13:19 +0000 (21:13 +0000)]
decl.c (grok_op_properties): Consistently use the location of the decl...
/cp
2018-06-11 Paolo Carlini <paolo.carlini@oracle.com>
* decl.c (grok_op_properties): Consistently use the location
of the decl; remove special casing of POSTINCREMENT_EXPR and
POSTDECREMENT_EXPR wrt default arguments.
/testsuite
2018-06-11 Paolo Carlini <paolo.carlini@oracle.com>
Carl Love [Mon, 11 Jun 2018 16:38:42 +0000 (16:38 +0000)]
altivec-7.c (main): Remove tests vec_unpackh(vecubi[0]) and vec_unpackl(vecubi[0]) returning long...
gcc/testsuite/ChangeLog:
2018-06-11 Carl Love <cel@us.ibm.com>
* gcc.target/powerpc/altivec-7.c (main): Remove tests
vec_unpackh(vecubi[0]) and vec_unpackl(vecubi[0]) returning
long long bool. Remove duplicate dg-final for xxlxor. Update
dg-final instruction counts.
* gcc.target/powerpc/altivec-37.c (main): New file for
tests vec_unpackh and vec_unpackl returning long long bool and
long long int.
rs6000: Put constraints on the correct operand in movdi (PR85755)
Some of the mov* patterns use ^ and $ constraint modifiers, which mean
give a penalty to this alternative if this operand needs a reload. They
are meant here to give a penalty if a register operand needs reloading
(because it needs to be in a different kind of register), not when a
memory operand needs reloading (which is easy and cheap to do).
This patch fixes the movdi patterns. This fixes PR85755.
The following are changed (name, old constraints, new constraints):
FPR store ^m := d m := ^d
FPR move ^d := d ^d := ^d
AVX store ^wY := wb wY := ^wb
AVX store $Z := wv Z := $wv
VSX move ^wi := wi ^wi := ^wi
PR target/85755
* config/rs6000/rs6000.md (*movdi_internal32): Put constraint modifiers
on the correct operand.
(*movdi_internal64): Ditto.
Eric Botcazou [Mon, 11 Jun 2018 09:19:51 +0000 (09:19 +0000)]
[Ada] Fix wrong code for initialization of fat pointer with -Og
2018-06-11 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Array_Type>: Reuse the
existing fields of a dummy fat pointer type, if any. Clear the
TYPE_DECL_SUPPRESS_DEBUG on the fat pointer type after completing it.
* contracts.adb (Process_Body_Postconditions): Expand only checked
postconditions.
(Process_Contract_Cases_For): Expand only checked contract cases.
(Process_Inherited_Preconditions): Ignored class-wide preconditions are
partially expanded because some of their semantic checks are tied to
the expansion.
(Process_Preconditions_For): Expand only checked preconditions.
(Process_Spec_Postconditions): Expand only checked preconditions.
Ignored class-wide preconditions are partially expanded because some of
their semantic checks are tied to the expansion.
* exp_prag.adb (Expand_N_Pragma): Suppress the expansion of ignored
assertion pragmas.
* exp_util.adb (Add_Inherited_Invariants): Code clean up.
* sem_util.adb (Propagate_Invariant_Attributes): Code clean up.
gcc/testsuite/
* gnat.dg/assertion_policy1.adb, gnat.dg/assertion_policy1_pkg.adb,
gnat.dg/assertion_policy1_pkg.ads: New testcase.
[Ada] Double finalization of limited controlled result
This patch disables a build-in-place optimization when a function returns a
limited controlled result because the optimization may violate the semantics of
finalizable types by performing illegal calls to Finalize.
In general, the optimization causes the result object of a build-in-place
function to be allocated at the caller site, with a pointer to the object
passed to the function. The function then simply initializes the caller-
allocated object.
This mode of operation however violates semantics of finalizable types when
the context of the call is allocation. The act of allocating the controlled
object at the caller site will place it on the associated access type's
finalization master. If the function fails the initialization of the object,
the malformed object will still be finalized when the finalization master
goes out of scope. This is dangerous, and must not happen.
------------
-- Source --
------------
-- pack.ads
with Ada.Finalization; use Ada.Finalization;
package Pack is
type Lim_Ctrl is new Limited_Controlled with null record;
procedure Finalize (Obj : in out Lim_Ctrl);
type Lim_Ctrl_Ptr is access all Lim_Ctrl;
function Make_Lim_Ctrl_Bad_Init return Lim_Ctrl;
function Make_Lim_Ctrl_OK_Init return Lim_Ctrl;
end Pack;
-- pack.adb
with Ada.Text_IO; use Ada.Text_IO;
package body Pack is
procedure Finalize (Obj : in out Lim_Ctrl) is
begin
Put_Line (" Finalize");
end Finalize;
function Make_Lim_Ctrl_Bad_Init return Lim_Ctrl is
begin
return Result : Lim_Ctrl := raise Program_Error do
null;
end return;
end Make_Lim_Ctrl_Bad_Init;
function Make_Lim_Ctrl_OK_Init return Lim_Ctrl is
begin
return Result : Lim_Ctrl do
raise Program_Error;
end return;
end Make_Lim_Ctrl_OK_Init;
end Pack;
-- main.adb
with Ada.Text_IO; use Ada.Text_IO;
with Pack; use Pack;
procedure Main is
begin
begin
Put_Line ("1) Heap-allocated bad init");
declare
Obj : Lim_Ctrl_Ptr := new Lim_Ctrl'(Make_Lim_Ctrl_Bad_Init);
begin
Put_Line ("1) ERROR: Heap-allocated bad init: exception not raised");
end;
exception
when Program_Error =>
Put_Line ("1) Heap-allocated bad init: Program_Error raised");
when others =>
Put_Line ("1) ERROR: Heap-allocatd bad init: unexpected exception");
end;
begin
Put_Line ("2) Stack-allocated bad init");
declare
Obj : Lim_Ctrl := Make_Lim_Ctrl_Bad_Init;
begin
Put_Line ("2) ERROR: Stack-allocated bad init: exception not raised");
end;
exception
when Program_Error =>
Put_Line ("2) Stack-allocated bad init: Program_Error raised");
when others =>
Put_Line ("2) ERROR: Stack-allocated bad init: unexpected exception");
end;
begin
Put_Line ("3) Heap-allocated OK init");
declare
Obj : Lim_Ctrl_Ptr := new Lim_Ctrl'(Make_Lim_Ctrl_OK_Init);
begin
Put_Line ("3) ERROR: Heap-allocated OK init: exception not raised");
end;
exception
when Program_Error =>
Put_Line ("3) Heap-allocated OK init: Program_Error raised");
when others =>
Put_Line ("3) ERROR: Heap-allocatd OK init: unexpected exception");
end;
begin
Put_Line ("4) Stack-allocated OK init");
declare
Obj : Lim_Ctrl := Make_Lim_Ctrl_OK_Init;
begin
Put_Line ("4) ERROR: Stack-allocated OK init: exception not raised");
end;
exception
when Program_Error =>
Put_Line ("4) Stack-allocated OK init: Program_Error raised");
when others =>
Put_Line ("4) ERROR: Stack-allocated OK init: unexpected exception");
end;
end Main;
----------------------------
-- Compilation and output --
----------------------------
$ gnatmake -q main.adb
$ ./main
1) Heap-allocated bad init
1) Heap-allocated bad init: Program_Error raised
2) Stack-allocated bad init
2) Stack-allocated bad init: Program_Error raised
3) Heap-allocated OK init
Finalize
3) Heap-allocated OK init: Program_Error raised
4) Stack-allocated OK init
Finalize
4) Stack-allocated OK init: Program_Error raised
* exp_ch6.adb (Add_Unconstrained_Actuals_To_Build_In_Place_Call): Do
not add any actuals when the size of the object is known, and the
caller will allocate it.
(Build_Heap_Allocator): Rename to Build_Heap_Or_Pool_Allocator to
better illustrate its functionality. Update the comment on the
generated code. Generate a branch for the heap and pool cases where
the object is not necessarity controlled.
(Expand_N_Extended_Return_Statement): Expand the extended return
statement into four branches depending the requested mode if the caller
will not allocate the object on its side.
(Make_Build_In_Place_Call_In_Allocator): Do not allocate a controlled
object on the caller side because this will violate the semantics of
finalizable types. Instead notify the function to allocate the object
on the heap or a user-defined storage pool.
(Needs_BIP_Alloc_Form): A build-in-place function needs to be notified
which of the four modes to employ when returning a limited controlled
result.
* exp_util.adb (Build_Allocate_Deallocate_Proc): Remove a redundant
guard which is already covered in Needs_Finalization.
projects / thirdparty / gcc.git / log
