This adds a flag to c_parser so we know when we were trying to
construct a string literal. If there is a parse error and we were
constructing a string literal, and the next token is an unknown
identifier name, and we know there is a standard header that defines
that name as a string literal, then add a missing header hint to
the error messsage.
The list of macro names are also used when providing a hint for
missing identifiers.
gcc/c-family/ChangeLog:
* known-headers.cc (get_string_macro_hint): New function.
(get_stdlib_header_for_name): Use get_string_macro_hint.
(get_c_stdlib_header_for_string_macro_name): New function.
* known-headers.h (get_c_stdlib_header_for_string_macro_name):
New function declaration.
gcc/c/ChangeLog:
* c-parser.c (struct c_parser): Add seen_string_literal
bitfield.
(c_parser_consume_token): Reset seen_string_literal.
(c_parser_error_richloc): Add name_hint if seen_string_literal
and next token is a CPP_NAME and we have a missing header
suggestion for the name.
(c_parser_string_literal): Set seen_string_literal.
gcc/testsuite/ChangeLog:
* gcc.dg/spellcheck-inttypes.c: New test.
* g++.dg/spellcheck-inttypes.C: Likewise.
The C++ parser already tracks function call parens matching, but the C
parser doesn't. This adds the same functionality to the C parser and adds
a testcase showing the C++ and C parser matching function call parens
in an error message.
gcc/c/ChangeLog:
* c-parser.c (c_parser_postfix_expression_after_primary): Add
scope with matching_parens after CPP_OPEN_PAREN.
gcc/testsuite/ChangeLog:
* c-c++-common/missing-close-func-paren.c: New test.
The same problem also arises for plfs where prefixed_load_p()
doesn't recognize it so we get just lfs in the asm output
with an @pcrel address.
PR target/95347
* config/rs6000/rs6000.c (is_stfs_insn): Rename to
is_lfs_stfs_insn and make it recognize lfs as well.
(prefixed_store_p): Use is_lfs_stfs_insn().
(prefixed_load_p): Use is_lfs_stfs_insn() to recognize lfs.
When checking that a constrained partial specialization is more
constrained than the primary template, we pass only the innermost level
of generic template arguments to strictly_subsumes. This leads to us
doing a nonsensical substitution from normalize_concept_check if the
full set of template arguments has multiple levels, and it ultimately
causes strictly_subsumes to sometimes erroneously return false as in the
testcase below.
gcc/cp/ChangeLog:
* pt.c (process_partial_specialization): Pass the full set of
generic template arguments to strictly_subsumes.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-partial-spec8.C: New test.
When determining the most specialized partial specialization of a
primary template that is nested inside a class template, we first
tsubst the outer template arguments into the TEMPLATE_DECL of each
partial specialization, and then check for satisfaction of each of the
new TEMPLATE_DECL's constraints.
But tsubst_template_decl does not currently guarantee that constraints
from the original DECL_TEMPLATE_RESULT get reattached to the new
DECL_TEMPLATE_RESULT. In the testcase below, this leads to the
constraints_satisfied_p check in most_specialized_partial_spec to
trivially return true for each of the partial specializations.
I'm not sure if such a guarantee would be desirable, but in this case we
can just check constraints_satisfied_p on the original TEMPLATE_DECL
instead of on the tsubsted TEMPLATE_DECL here, which is what this patch
does (alongside some reorganizing).
gcc/cp/ChangeLog:
PR c++/92103
* pt.c (most_specialized_partial_spec): Reorganize the loop over
DECL_TEMPLATE_SPECIALIZATIONS. Check constraints_satisfied_p on
the original template declaration, not on the tsubsted one.
gcc/testsuite/ChangeLog:
PR c++/92103
* g++.dg/cpp2a/concepts-partial-spec7.C: New test.
it turns out that half of the global decl stream of cc1 LTO build consits
TREE_LISTS, identifiers and integer cosntats representing TYPE_VALUES of enums.
Those are streamed only to produce ODR warning and used otherwise, so this
patch moves the info to a separate section that is represented and streamed
more effectively.
This also adds place for more info that may be used for ODR diagnostics
(i.e. at the moment we do not warn when the declarations differs i.e. by the
associated member functions and their types) and the type inheritance graph
rather then poluting the global stream.
I was bit unsure what enums we want to store into the section. All parsed
enums is probably too expensive, only those enums streamed to represent IL is
bit hard to get, so I went for those seen by free lang data.
As a plus we now get bit more precise warning because also the location of
mismatched enum CONST_DECL is streamed.
It changes:
[WPA] read 4608466 unshared trees
[WPA] read 2942094 mergeable SCCs of average size 1.365328
[WPA] 8625389 tree bodies read in total
[WPA] tree SCC table: size 524287, 247652 elements, collision ratio: 0.383702
[WPA] tree SCC max chain length 2 (size 1)
[WPA] Compared 2694442 SCCs, 228 collisions (0.000085)
[WPA] Merged 2694419 SCCs
[WPA] Merged 3731982 tree bodies
[WPA] Merged 633335 types
[WPA] 122077 types prevailed (155548 associated trees)
...
[WPA] Compression: 110593119 input bytes, 287696614 uncompressed bytes (ratio: 2.601397)
[WPA] Size of mmap'd section decls: 85628556 bytes
[WPA] Size of mmap'd section function_body: 13842928 bytes
[WPA] read 1720989 unshared trees
[WPA] read 1252217 mergeable SCCs of average size 1.858507
[WPA] 4048243 tree bodies read in total
[WPA] tree SCC table: size 524287, 226524 elements, collision ratio: 0.491759
[WPA] tree SCC max chain length 2 (size 1)
[WPA] Compared 1025693 SCCs, 196 collisions (0.000191)
[WPA] Merged 1025670 SCCs
[WPA] Merged 2063373 tree bodies
[WPA] Merged 633497 types
[WPA] 122299 types prevailed (155827 associated trees)
...
[WPA] Compression: 103428770 input bytes, 281151423 uncompressed bytes (ratio: 2.718310)
[WPA] Size of mmap'd section decls: 49390917 bytes
[WPA] Size of mmap'd section function_body: 13858258 bytes
...
[WPA] Size of mmap'd section odr_types: 29054816 bytes
So number of SCCs streamed drops to 38% and the number of unshared trees (that
are bit misnamed since it is mostly integer_cst) to 37%.
Things speeds up correspondingly, but I did not save time report from previous
build.
The enum values are still quite surprisingly large. I may take a look into
ways getting it smaller incrementally, but it streams reasonably fast:
Time variable usr sys wall GGC
phase opt and generate : 25.20 ( 68%) 10.88 ( 72%) 36.13 ( 69%) 868060 kB ( 52%)
phase stream in : 4.46 ( 12%) 0.90 ( 6%) 5.38 ( 10%) 790724 kB ( 48%)
phase stream out : 6.69 ( 18%) 3.32 ( 22%) 10.03 ( 19%) 8 kB ( 0%)
ipa lto gimple in : 0.79 ( 2%) 1.86 ( 12%) 2.39 ( 5%) 252612 kB ( 15%)
ipa lto gimple out : 2.48 ( 7%) 0.78 ( 5%) 3.26 ( 6%) 0 kB ( 0%)
ipa lto decl in : 1.71 ( 5%) 0.46 ( 3%) 2.34 ( 4%) 417883 kB ( 25%)
ipa lto decl out : 3.28 ( 9%) 0.07 ( 0%) 3.27 ( 6%) 0 kB ( 0%)
whopr wpa I/O : 0.40 ( 1%) 2.24 ( 15%) 2.77 ( 5%) 8 kB ( 0%)
lto stream decompression : 1.38 ( 4%) 0.31 ( 2%) 1.36 ( 3%) 0 kB ( 0%)
ipa ODR types : 0.18 ( 0%) 0.02 ( 0%) 0.25 ( 0%) 0 kB ( 0%)
ipa inlining heuristics : 11.64 ( 31%) 1.45 ( 10%) 13.12 ( 25%) 453160 kB ( 27%)
ipa pure const : 1.74 ( 5%) 0.00 ( 0%) 1.76 ( 3%) 0 kB ( 0%)
ipa icf : 1.72 ( 5%) 5.33 ( 35%) 7.06 ( 13%) 16593 kB ( 1%)
whopr partitioning : 2.22 ( 6%) 0.01 ( 0%) 2.23 ( 4%) 5689 kB ( 0%)
TOTAL : 37.17 15.20 52.46 1660886 kB
LTO-bootstrapped/regtested x86_64-linux, will comit it shortly.
gcc/ChangeLog:
2020-06-03 Jan Hubicka <hubicka@ucw.cz>
* ipa-devirt.c: Include data-streamer.h, lto-streamer.h and
streamer-hooks.h.
(odr_enums): New static var.
(struct odr_enum_val): New struct.
(class odr_enum): New struct.
(odr_enum_map): New hashtable.
(odr_types_equivalent_p): Drop code testing TYPE_VALUES.
(add_type_duplicate): Likewise.
(free_odr_warning_data): Do not free TYPE_VALUES.
(register_odr_enum): New function.
(ipa_odr_summary_write): New function.
(ipa_odr_read_section): New function.
(ipa_odr_summary_read): New function.
(class pass_ipa_odr): New pass.
(make_pass_ipa_odr): New function.
* ipa-utils.h (register_odr_enum): Declare.
* lto-section-in.c: (lto_section_name): Add odr_types section.
* lto-streamer.h (enum lto_section_type): Add odr_types section.
* passes.def: Add odr_types pass.
* lto-streamer-out.c (DFS::DFS_write_tree_body): Do not stream
TYPE_VALUES.
(hash_tree): Likewise.
* tree-streamer-in.c (lto_input_ts_type_non_common_tree_pointers):
Likewise.
* tree-streamer-out.c (write_ts_type_non_common_tree_pointers):
Likewise.
* timevar.def (TV_IPA_ODR): New timervar.
* tree-pass.h (make_pass_ipa_odr): Declare.
* tree.c (free_lang_data_in_type): Regiser ODR types.
gcc/lto/ChangeLog:
2020-06-03 Jan Hubicka <hubicka@ucw.cz>
* lto-common.c (compare_tree_sccs_1): Do not compare TYPE_VALUES.
gcc/testsuite/ChangeLog:
2020-06-03 Jan Hubicka <hubicka@ucw.cz>
* g++.dg/lto/pr84805_0.C: Update.
This corrects a pasto, where I copied the constraint on bare
parameter packs from the co_return to co_yield/await without
properly reviewing it.
gcc/cp/ChangeLog:
PR c++/95345
* coroutines.cc (finish_co_await_expr): Revise to allow for
parameter packs.
(finish_co_yield_expr): Likewise.
gcc/testsuite/ChangeLog:
PR c++/95345
* g++.dg/coroutines/pr95345.C: New test.
In a non-template, grokdeclarator notices when we build a pointer to a
variably-modified type, and inserts a TYPE_DECL to make sure that type gets
gimplified. But in a template we can't always recognize a variably-modified
type, so we need to deal with it at instantiation time.
gcc/cp/ChangeLog:
PR c++/95232
* cp-tree.h (predeclare_vla): Declare.
* cp-gimplify.c (predeclare_vla): Handle getting a decl.
* pt.c (tsubst_expr) [DECL_EXPR]: Use it.
gcc/testsuite/ChangeLog:
PR c++/95232
* g++.dg/ubsan/vla-2.C: New test.
gcc/fortran/ChangeLog:
2020-06-03 José Rui Faustino de Sousa <jrfsousa@gmail.com>
PR fortran/95214
PR fortran/66833
PR fortran/67938
* trans-expr.c (gfc_maybe_dereference_var): Add assumed-rank to
character dummy arguments list of possible attributes.
gcc/testsuite/ChangeLog:
2020-06-03 José Rui Faustino de Sousa <jrfsousa@gmail.com>
PR fortran/95214
PR fortran/66833
PR fortran/67938
* gfortran.dg/PR95214.f90: New test.
This makes sure to get a truth type for scatter masks even when they
are invariant.
2020-06-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/95487
* tree-vect-stmts.c (vectorizable_store): Use a truth type
for the scatter mask.
* g++.dg/vect/pr95487.cc: New testcase.
This fixes a place where I missed to use SLP_TREE_REPRESENTATIVE
after its introduction.
2020-06-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/95495
* tree-vect-slp.c (vect_slp_analyze_node_operations): Use
SLP_TREE_REPRESENTATIVE in the shift assertion.
* gcc.dg/vect/pr95495.c: New testcase.
I got this error message when editing gcc and recompiling:
../../gcc/gcc/ada/gcc-interface/decl.c:7714:39: error: ‘DWARF_GNAT_ENCODINGS_all’ was not declared in this scope; did you mean ‘DWARF_GNAT_ENCODINGS_GDB’?
7714 | = debug_info && gnat_encodings == DWARF_GNAT_ENCODINGS_all;
| ^~~~~~~~~~~~~~~~~~~~~~~~
| DWARF_GNAT_ENCODINGS_GDB
This suggestion could be improved -- what happened here is that I
failed to upper-case the word, and DWARF_GNAT_ENCODINGS_ALL was the
correct spelling.
This patch changes gcc's spell checker to prefer simple case changes
when possible.
I tested this using the self-tests. A new self-test is also included.
gcc/ChangeLog:
* spellcheck.c (CASE_COST): New define.
(BASE_COST): New define.
(get_edit_distance): Recognize case changes.
(get_edit_distance_cutoff): Update.
(test_edit_distances): Update.
(get_old_cutoff): Update.
(test_find_closest_string): Add case sensitivity test.
This changes the loop over all stmts to a loop over all costed stmts.
2020-06-03 Richard Biener <rguenther@suse.de>
* tree-vect-slp.c (vect_bb_vectorization_profitable_p): Loop over
the cost vector to unset the visited flag on stmts.
this patch cleanups a bit the way LTO tags are assigned (so we do not use magic
numbers of 2) and reorders them approximately by their frequency so the stream
gets little bit smaller because of uleb coding.
From:
[WPA] Compression: 111213968 input bytes, 293801489 uncompressed bytes (ratio: 2.641768)
[WPA] Size of mmap'd section decls: 85983129 bytes
[WPA] Size of mmap'd section function_body: 14058627 bytes
to:
[WPA] Compression: 110593119 input bytes, 287696614 uncompressed bytes (ratio: 2.601397)
[WPA] Size of mmap'd section decls: 85628556 bytes
[WPA] Size of mmap'd section function_body: 13842928 bytes
lto-bootstrapped/regtested x86_64-linux, will commit it shortly.
* lto-streamer.h (LTO_tags): Reorder so frequent tags has small indexes;
add LTO_first_tree_tag and LTO_first_gimple_tag.
(lto_tag_is_tree_code_p): Update.
(lto_tag_is_gimple_code_p): Update.
(lto_gimple_code_to_tag): Update.
(lto_tag_to_gimple_code): Update.
(lto_tree_code_to_tag): Update.
(lto_tag_to_tree_code): Update.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_ch12.adb (Denotes_Previous_Actual): Delete.
(Check_Generic_Actuals): Do not special case array types whose
component type denotes a previous actual. Do not special case
access types whose base type is private.
(Check_Private_View): Remove code dealing with secondary types.
Do not switch the views of an array because of its component.
(Copy_Generic_Node): Add special handling for a comparison
operator on array types.
(Instantiate_Type): Do not special case access types whose
designated type is private.
(Set_Global_Type): Do not special case array types whose
component type is private.
2020-06-03 Justin Squirek <squirek@adacore.com>
gcc/ada/
* sem_ch10.adb (Process_Body_Clauses): Add loop to interate
through all prefixes in a use_type clause so that all packages
in the expanded name get examined for effectiveness.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_ch12.adb (Check_Private_View): Clean up implementation of
second main case, when the generic sees the private declaration.
2020-06-03 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* sem_util.ads, sem_util.adb (Side_Effect_Free_Statements,
Side_Effect_Free_Loop): New functions.
(Has_Non_Null_Statements): Consider N_Call_Marker as a null
statement.
* sem_ch5.adb (Analyze_Loop_Parameter_Specification): Call
Set_Is_Null_Loop even inside a generic instantiation.
(Analyze_Loop_Statement): Mark for removal loops with no side
effects.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* opt.ads (Allow_Integer_Address): Fix typo in comment.
* stand.ads (Standard_Address): New entity.
* cstand.adb (Create_Standard): Create it.
* sem_ch4.adb (Operator_Check): Convert the operands of an
operation with addresses and integers to Standard_Address
if pragma Allow_Integer_Address is in effect.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_util.adb (Remove_Side_Effects): For a type conversion, do
not remove the side effects of the expression only if it is of
universal integer type.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_ch4.adb (Expand_N_Unchecked_Type_Conversion): Also fold the
conversion for literals of enumeration types.
2020-06-03 Yannick Moy <moy@adacore.com>
gcc/ada/
* rtsfind.adb (Load_RTU): Correctly set/reset global variable to
ignore SPARK_Mode in instances around loading.
* sem_ch6.adb (Analyze_Subprogram_Body_Helper): Accept Off
without prior On.
* sem_ch7.adb (Analyze_Package_Body_Helper): Likewise.
* sem_prag.adb (Analyze_Pragma): Always take into account
SPARK_Mode Off.
2020-06-03 Justin Squirek <squirek@adacore.com>
gcc/ada/
* libgnat/a-cborse.adb, libgnat/a-cihase.adb,
libgnat/a-ciorse.adb, libgnat/a-coorse.adb: Modified to use
'Unrestricted_Access in certain cases where static accessibility
errors were triggered.
* exp_ch6.adb (Expand_Simple_Return_Statement): Add generation
of dynamic accessibility checks as determined by
Is_Special_Aliased_Formal_Access.
* sem_attr.adb (Resolve_Attribute): Add call to
Is_Special_Aliased_Formal_Access to avoid performing static
checks where dynamic ones are required.
* sem_ch6.adb (Check_Return_Obj_Accessibility): Handle renamed
objects within component associations requiring special
accessibility checks.
* sem_util.adb, sem_util.ads (Is_Special_Aliased_Formal_Access):
Created to detect the special case where an aliased formal is
being compared against the level of an anonymous access return
object.
(Object_Access_Level): Remove incorrect condition leading to
overly permissive accessibility levels being returned on
explicitly aliased parameters.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* einfo.ads (Enum_Pos_To_Rep): Adjust description.
* exp_attr.adb (Expand_N_Attribute_Reference) <Pred>:
Reimplement in the case of an enumeration type with non-standard
but contiguous representation.
<Succ>: Likewise.
<Val>: Likewise.
* exp_ch3.adb (Expand_Freeze_Enumeration_Type): Count the
literals in the first loop. If the representation is
contiguous, just build the index type of the array type and set
Enum_Pos_To_Rep to it.
2020-06-03 Gary Dismukes <dismukes@adacore.com>
gcc/ada/
* exp_attr.adb (Expand_Loop_Entry_Attribute): Revise loop that
resets the scopes of entities associated with Loop_Id to the
scope of the new function, so the resetting is not restricted to
itypes, but excludes loop parameters and the function entity
itself. However, this fix is believed to be incomplete and a ???
comment is added to indicate that.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_attr.adb (Expand_N_Attribute_Reference) <Enum_Rep>:
In the case of an enumeration type, do an intermediate
conversion to a small integer type. Remove useless stuff.
<Finalization_Size>: Do not hardcode Universal_Integer and
fix a type mismatch in the assignment to the variable.
<Max_Size_In_Storage_Elements>: Likewise.
<From_Any>: Do not redefine the Ptyp local variable.
<To_Any>: Likewise.
<TypeCode>: Likewise.
<Pos>: Small tweaks.
<Val>: For an enumeration type with standard representation,
apply the range check to the expression of a convertion to
Universal_Integer, if any. For an integer type, expand to
a mere conversion.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* libgnat/s-rannum.adb (Random_Discrete): In the 32-bit case,
use the same linear implementation as in the 64-bit case when
the type has a contiguous representation.
2020-06-03 Gary Dismukes <dismukes@adacore.com>
gcc/ada/
* sem_util.adb (Build_Class_Wide_Clone_Decl): Call
Set_Debug_Info_Needed to set the Needs_Debug_Info flag on
Clone_Id if the flag is set on Spec_Id.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_attr.adb (Attribute_Valid): Use Standard_Long_Long_Integer
in lieu of Universal_Integer as large integer type.
* exp_ch3.adb (Expand_Freeze_Enumeration_Type): Likewise.
2020-06-03 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* checks.adb (Is_Single_Attribute_Reference): New predicate.
(Generate_Range_Check): Do not force the evaluation if the
node is a single attribute reference.
* exp_util.adb (Side_Effect_Free_Attribute): New predicate.
(Side_Effect_Free) <N_Attribute_Reference>: Call it.
(Remove_Side_Effects): Remove the side effects of the prefix
for an attribute reference whose prefix is not a name.
We must guard used atomic builtins with GCOV_SUPPORTS_ATOMIC.
The patch is tested on AIX and I'm going to push it.
libgcc/ChangeLog:
PR gcov-profile/95480
* libgcov-profiler.c (GCOV_SUPPORTS_ATOMIC): Move to...
* libgcov.h (GCOV_SUPPORTS_ATOMIC): ...here.
(gcov_counter_add): Use GCOV_SUPPORTS_ATOMIC guard.
(gcov_counter_set_if_null): Likewise.
