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changes in -std=c11 etc. modes [PR114007]
We aren't able to parse __has_attribute (vendor::attr) (and __has_c_attribute
and __has_cpp_attribute) in strict C < C23 modes. While in -std=gnu* modes
or in -std=c23 there is CPP_SCOPE token, in -std=c* (except for -std=c23)
there are is just a pair of CPP_COLON tokens.
The c-lex.cc hunk adds support for that, but always returns 0 in that case
unlike the GCC 14+ version.
2024-02-22 Jakub Jelinek <jakub@redhat.com>
PR c/114007
gcc/c-family/
* c-lex.c (c_common_has_attribute): Parse 2 CPP_COLONs with
the first one with COLON_SCOPE flag the same as CPP_SCOPE but
ensure 0 is returned then.
gcc/testsuite/
* gcc.dg/c23-attr-syntax-8.c: New test.
libcpp/
* include/cpplib.h (COLON_SCOPE): Define to PURE_ZERO.
* lex.c (_cpp_lex_direct): When lexing CPP_COLON with another
colon after it, if !CPP_OPTION (pfile, scope) set COLON_SCOPE
flag on the first CPP_COLON token.
(cherry picked from commit 37127ed975e09813eaa2d1cf1062055fce45dd16)
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The https://gcc.gnu.org/pipermail/gcc-patches/2020-November/557903.html
change broke the following testcases. The problem is when a pragma
namespace allows expansion (i.e. p->is_nspace && p->allow_expansion),
e.g. the omp or acc namespaces do, then when parsing the second pragma
token we do it with pfile->state.in_directive set,
pfile->state.prevent_expansion clear and pfile->state.in_deferred_pragma
clear (the last one because we don't know yet if it will be a deferred
pragma or not). If the pragma line only contains a single name
and newline after it, and there exists a function-like macro with the
same name, the preprocessor needs to peek in funlike_invocation_p
the next token whether it isn't ( but in this case it will see a newline.
As pfile->state.in_directive is set, we don't read anything after the
newline, pfile->buffer->need_line is set and CPP_EOF is lexed, which
funlike_invocation_p doesn't push back. Because name is a function-like
macro and on the pragma line there is no ( after the name, it isn't
expanded, and control flow returns to do_pragma. If name is valid
deferred pragma, we set pfile->state.in_deferred_pragma (and really
need it set so that e.g. end_directive later on doesn't eat all the
tokens from the pragma line).
Before Nathan's change (which unfortunately didn't contain rationale
on why it is better to do it like that), this wasn't a problem,
next _cpp_lex_direct called when we want next token would return
CPP_PRAGMA_EOF when it saw buffer->need_line, which would turn off
pfile->state.in_deferred_pragma and following get token would already
read the next line. But Nathan's patch replaced it with an assertion
failure that now triggers and CPP_PRAGMA_EOL is done only when lexing
the '\n'. Except for this special case that works fine, but in
this case it doesn't because when peeking the token we still didn't know
that it will be a deferred pragma.
I've tried to fix that up in do_pragma by detecting this and pushing
CPP_PRAGMA_EOL as lookahead, but that doesn't work because end_directive
still needs to see pfile->state.in_deferred_pragma set.
So, this patch affectively reverts part of Nathan's change, CPP_PRAGMA_EOL
addition isn't done only when parsing the '\n', but is now done in both
places, in the first one instead of the assertion failure.
2021-12-04 Jakub Jelinek <jakub@redhat.com>
PR preprocessor/102432
* lex.c (_cpp_lex_direct): If buffer->need_line while
pfile->state.in_deferred_pragma, return CPP_PRAGMA_EOL token instead
of assertion failure.
* c-c++-common/gomp/pr102432.c: New test.
* c-c++-common/goacc/pr102432.c: New test.
(cherry picked from commit 55dfce4d5cb4a366ced7e1194a1c7f04389e3087)
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Normal preprocessing, -fdirectives-only preprocessing before the Nathan's
rewrite, and all other compilers I've tried on godbolt treat even \*/
as end of a block comment, but the new -fdirectives-only handling doesn't.
2021-11-17 Jakub Jelinek <jakub@redhat.com>
PR preprocessor/103130
* lex.c (cpp_directive_only_process): Treat even \*/ as end of block
comment.
* c-c++-common/cpp/dir-only-9.c: New test.
(cherry picked from commit 049f0efeaa77b43a508172161ca040feb6bb5622)
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terminated with newline [PR100646]
As can be seen on the testcases, before the -fdirectives-only preprocessing
rewrite the preprocessor would assume // comments are terminated by the
end of file even when newline wasn't there, but now we error out.
The following patch restores the previous behavior.
2021-05-20 Jakub Jelinek <jakub@redhat.com>
PR preprocessor/100646
* lex.c (cpp_directive_only_process): Treat end of file as termination
for !is_block comments.
* gcc.dg/cpp/pr100646-1.c: New test.
* gcc.dg/cpp/pr100646-2.c: New test.
(cherry picked from commit d15a2d261b24adcbfe5e663b15dde3df5d2b3486)
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newline [PR100392]
If a header doesn't end with a new-line, with -fdirectives-only we right now
preprocess it as
int i = 1;# 2 "pr100392.c" 2
i.e. the line directive isn't on the next line, which means we fail to parse
it when compiling.
GCC 10 and earlier libcpp/directives-only.c had for this:
if (!pfile->state.skipping && cur != base)
{
/* If the file was not newline terminated, add rlimit, which is
guaranteed to point to a newline, to the end of our range. */
if (cur[-1] != '\n')
{
cur++;
CPP_INCREMENT_LINE (pfile, 0);
lines++;
}
cb->print_lines (lines, base, cur - base);
}
and we have the assertion
/* Files always end in a newline or carriage return. We rely on this for
character peeking safety. */
gcc_assert (buffer->rlimit[0] == '\n' || buffer->rlimit[0] == '\r');
So, this patch just does readd the more less same thing, so that we emit
a newline after the inline even when it wasn't there before.
2021-05-12 Jakub Jelinek <jakub@redhat.com>
PR preprocessor/100392
* lex.c (cpp_directive_only_process): If buffer doesn't end with '\n',
add buffer->rlimit[0] character to the printed range and
CPP_INCREMENT_LINE and increment line_count.
* gcc.dg/cpp/pr100392.c: New test.
* gcc.dg/cpp/pr100392.h: New file.
(cherry picked from commit c6b664e2c4c127025e076d8b584abe0976694629)
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Since the r0-85991-ga25a8f3be322fe0f838947b679f73d6efc2a412c
https://gcc.gnu.org/legacy-ml/gcc-patches/2008-02/msg01329.html
changes, so that we handle macros inside of pragmas that should expand
macros, during preprocessing we print those pragmas token by token,
with CPP_PRAGMA printed as
fputs ("#pragma ", print.outf);
if (space)
fprintf (print.outf, "%s %s", space, name);
else
fprintf (print.outf, "%s", name);
where name is some identifier (so e.g. print
#pragma omp parallel
or
#pragma omp for
etc.). Because it ends in an identifier, we need to handle it like
an identifier (i.e. CPP_NAME) for the decision whether a space needs
to be emitted in between that #pragma whatever or #pragma whatever whatever
and following token, otherwise the attached testcase is preprocessed as
#pragma omp forreduction(+:red)
rather than
#pragma omp for reduction(+:red)
The cpp_avoid_paste function is only called for this purpose.
2021-05-07 Jakub Jelinek <jakub@redhat.com>
PR c/100450
* lex.c (cpp_avoid_paste): Handle token1 CPP_PRAGMA like CPP_NAME.
* c-c++-common/gomp/pr100450.c: New test.
(cherry picked from commit 170c850e4bd46745e2a5130b5eb09f9fceb98416)
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GCC 11 ICEs on all -fdirectives-only preprocessing when the files don't end
with a newline.
The problem is in the assertion, for empty TUs buffer->cur == buffer->rlimit
and so buffer->rlimit[-1] access triggers UB in the preprocessor, for
non-empty TUs it refers to the last character in the file, which can be
anything.
The preprocessor adds a '\n' character (or '\r', in particular if the
user file ends with '\r' then it adds another '\r' rather than '\n'), but
that is added after the limit, i.e. at buffer->rlimit[0].
Now, if the routine handles occassional bumping of pos to buffer->rlimit + 1,
I think it is just the assert that needs changing, usually we read from *pos
if pos < limit and then e.g. if it is '\r', look at the following character
(which could be one of those '\n' or '\r' at buffer->rlimit[0]). There is
also the case where for '\\' before the limit we read following character
and if it is '\n', do one thing, if it is '\r' read another character.
But in that case if '\\' was the last char in the TU, the limit char will be
'\n', so we are ok.
2021-02-03 Jakub Jelinek <jakub@redhat.com>
PR preprocessor/98882
* lex.c (cpp_directive_only_process): Don't assert that rlimit[-1]
is a newline, instead assert that rlimit[0] is either newline or
carriage return. When seeing '\\' followed by '\r', check limit
before accessing pos[1].
* gcc.dg/cpp/pr98882.c: New test.
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And replace __builtin_ia32_pcmpeqb128 with operator == in libcpp.
gcc/ChangeLog:
PR target/98833
* config/i386/sse.md (sse2_gt<mode>3): Drop !TARGET_XOP in condition.
(*sse2_eq<mode>3): Ditto.
gcc/testsuite/ChangeLog:
PR target/98833
* gcc.target/i386/pr98833.c: New test.
libcpp/
PR target/98833
* lex.c (search_line_sse2): Replace builtins with == operator.
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Deferred macros are needed for C++ modules. Header units may export
macro definitions and undefinitions. These are resolved lazily at the
point of (potential) use. (The language specifies that, it's not just
a useful optimization.) Thus, identifier nodes grow a 'deferred'
field, which fortunately doesn't expand the structure on 64-bit
systems as there was padding there. This is non-zero on NT_MACRO
nodes, if the macro is deferred. When such an identifier is lexed, it
is resolved via a callback that I added recently. That will either
provide the macro definition, or discover it there was an overriding
undef. Either way the identifier is no longer a deferred macro.
Notice it is now possible for NT_MACRO nodes to have a NULL macro
expansion.
libcpp/
* include/cpplib.h (struct cpp_hashnode): Add deferred field.
(cpp_set_deferred_macro): Define.
(cpp_get_deferred_macro): Declare.
(cpp_macro_definition): Reformat, add overload.
(cpp_macro_definition_location): Deal with deferred macro.
(cpp_alloc_token_string, cpp_compare_macro): Declare.
* internal.h (_cpp_notify_macro_use): Return bool
(_cpp_maybe_notify_macro_use): Likewise.
* directives.c (do_undef): Check macro is not undef before
warning.
(do_ifdef, do_ifndef): Deal with deferred macro.
* expr.c (parse_defined): Likewise.
* lex.c (cpp_allocate_token_string): Break out of ...
(create_literal): ... here. Call it.
(cpp_maybe_module_directive): Deal with deferred macro.
* macro.c (cpp_get_token_1): Deal with deferred macro.
(warn_of_redefinition): Deal with deferred macro.
(compare_macros): Rename to ...
(cpp_compare_macro): ... here. Make extern.
(cpp_get_deferred_macro): New.
(_cpp_notify_macro_use): Deal with deferred macro, return bool
indicating definedness.
(cpp_macro_definition): Deal with deferred macro.
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In preparing module patch 7 I realized there was a cleanup I could
make to simplify it. This is that cleanup. Also, when doing the
cleanup I noticed some macros had been turned into inline functions,
but not renamed to the preprocessors internal namespace
(_cpp_$INTERNAL rather than cpp_$USER). Thus, this renames those
functions, deletes an internal field of the file structure, and
determines whether we're in the main file by comparing to
pfile->main_file, the _cpp_file of the main file.
libcpp/
* internal.h (cpp_in_system_header): Rename to ...
(_cpp_in_system_header): ... here.
(cpp_in_primary_file): Rename to ...
(_cpp_in_main_source_file): ... here. Compare main_file equality
and check main_search value.
* lex.c (maybe_va_opt_error, _cpp_lex_direct): Adjust for rename.
* macro.c (_cpp_builtin_macro_text): Likewise.
(replace_args): Likewise.
* directives.c (do_include_next): Likewise.
(do_pragma_once, do_pragma_system_header): Likewise.
* files.c (struct _cpp_file): Delete main_file field.
(pch_open): Check pfile->main_file equality.
(make_cpp_file): Drop cpp_reader parm, don't set main_file.
(_cpp_find_file): Adjust.
(_cpp_stack_file): Check pfile->main_file equality.
(struct report_missing_guard_data): Add cpp_reader field.
(report_missing_guard): Check pfile->main_file equality.
(_cpp_report_missing_guards): Adjust.
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C++20 modules introduces a new kind of preprocessor directive -- a
module directive. These are directives but without the leading '#'.
We have to detect them by sniffing the start of a logical line. When
detected we replace the initial identifiers with unspellable tokens
and pass them through to the language parser the same way deferred
pragmas are. There's a PRAGMA_EOL at the logical end of line too.
One additional complication is that we have to do header-name lexing
after the initial tokens, and that requires changes in the macro-aware
piece of the preprocessor. The above sniffer sets a counter in the
lexer state, and that triggers at the appropriate point. We then do
the same header-name lexing that occurs on a #include directive or
has_include pseudo-macro. Except that the header name ends up in the
token stream.
A couple of token emitters need to deal with the new token possibility.
gcc/c-family/
* c-lex.c (c_lex_with_flags): CPP_HEADER_NAMEs can now be seen.
libcpp/
* include/cpplib.h (struct cpp_options): Add module_directives
option.
(NODE_MODULE): New node flag.
(struct cpp_hashnode): Make rid-code a bitfield, increase bits in
flags and swap with type field.
* init.c (post_options): Create module-directive identifier nodes.
* internal.h (struct lexer_state): Add directive_file_token &
n_modules fields. Add module node enumerator.
* lex.c (cpp_maybe_module_directive): New.
(_cpp_lex_token): Call it.
(cpp_output_token): Add '"' around CPP_HEADER_NAME token.
(do_peek_ident, do_peek_module): New.
(cpp_directives_only): Detect module-directive lines.
* macro.c (cpp_get_token_1): Deal with directive_file_token
triggering.
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This patch moves the generation of PRAGMA_EOF earlier, to when we set
need_line, rather than when we try and get the next line. It also
prevents peeking past a PRAGMA token.
libcpp/
* lex.c (cpp_peek_token): Do not peek past CPP_PRAGMA.
(_cpp_lex_direct): Handle EOF in pragma when setting need_line,
not when needing a line.
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I noticed a fencepost error in the preprocessor. We should be
checking if the next char is at the limit, not the current char (which
can't be, because we're looking at it).
libcpp/
* lex.c (_cpp_clean_line): Fix DOS off-by-one error.
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My previous attempt at fixing this was incorrect. The problem occurs
earlier in that _cpp_lex_direct processes the unwinding EOF needs in
collect_args mode. This patch changes it not to do that, in the same
way as directive parsing works. Also collect_args shouldn't push_back
such fake EOFs, and neither should funlike_invocation_p.
libcpp/
* lex.c (_cpp_lex_direct): Do not complete EOF processing when
parsing_args.
* macro.c (collect_args): Do not unwind fake EOF.
(funlike_invocation_p): Do not unwind fake EOF.
(cpp_context): Replace abort with gcc_assert.
gcc/testsuite/
* gcc.dg/cpp/endif.c: Move to ...
* c-c++-common/cpp/endif.c: ... here.
* gcc.dg/cpp/endif.h: Move to ...
* c-c++-common/cpp/endif.h: ... here.
* c-c++-common/cpp/eof-2.c: Adjust diagnostic.
* c-c++-common/cpp/eof-3.c: Adjust diagnostic.
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libcpp has two specialized altivec implementations of search_line_fast,
one for power8+ and the other one otherwise.
Both use __attribute__((altivec(vector))) and the GCC builtins rather than
altivec.h and the APIs from there, which is fine, but should be restricted
to when libcpp is built with GCC, so that it can be relied on.
The second elif is
and thus e.g. when built with clang it isn't picked, but the first one was
just guarded with
and so according to the bugreporter clang fails miserably on that.
The following patch fixes that by adding the same GCC_VERSION requirement
as the second version. I don't know where the 4.5 in there comes from and
the exact version doesn't matter that much, as long as it is above 4.2 that
clang pretends to be and smaller or equal to 4.8 as the oldest gcc we
support as bootstrap compiler ATM.
Furthermore, the patch fixes the comment, the version it is talking about is
not pre-GCC 5, but actually the GCC 5+ one.
2020-09-26 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/97163
* lex.c (search_line_fast): Only use _ARCH_PWR8 Altivec version
for GCC >= 4.5.
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For (invalid) newline inside of the raw string literal delimiter, doing
continue means we skip the needed processing of newlines. Instead of
duplicating that, this patch just doesn't continue for those.
2020-07-28 Jakub Jelinek <jakub@redhat.com>
PR preprocessor/96323
* lex.c (lex_raw_string): For c == '\n' don't continue after reporting
an prefix delimiter error.
* c-c++-common/cpp/pr96323.c: New test.
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pr95149 is a false positive static analysis checker. But it
encouranged me to fix raw string lexing, which does contain a
complicated macro and pointers to local variables. The
reimplementation does away with that macro. Part of the complication
is we need to undo some of the fresh line processing -- trigraph notes
and escaped line continuations. But the undone characters need to go
through the raw string processing, as they can legitimately be part of
the prefix marker. however, in this reformulation we only process one
line marker at a time[*], so there's a limited number of undone
characters. We can arrange the buffering to make sure we don't split
such an append sequence, and then simply take the characters from the
append buffer.
The prefix scanner had a switch statement, which I discovered was not
optimized as well as an if of a bunch of explicit comparisons (pr
95208 filed).
Finally I adjusted the failure mode. When we get a bad prefix, we lex
up until the next '"', thus often swallowing the whole raw string.
Previously we'd bail and then the lexer would usually generate stupid
tokens, particularly when meeting the ending '"'.
libcpp/
* lex.c (struct lit_accum): New.
(bufring_append): Replace by lit_accum::append.
(lex_raw_string): Reimplement, using fragments of the old version.
(lex_string): Adjust lex_raw_string call.
gcc/testsuite/
* c-c++-common/raw-string-14.c: Adjust errors.
* c-c++-common/raw-string-16.c: Likewise.
* c-c++-common/raw-string-5.c: Likewise.
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C++20 isn't final quite yet, but all that remains is formalities, so let's
go ahead and change all the references.
I think for the next C++ standard we can just call it C++23 rather than
C++2b, since the committee has been consistent about time-based releases
rather than feature-based.
gcc/c-family/ChangeLog
2020-05-13 Jason Merrill <jason@redhat.com>
* c.opt (std=c++20): Make c++2a the alias.
(std=gnu++20): Likewise.
* c-common.h (cxx_dialect): Change cxx2a to cxx20.
* c-opts.c: Adjust.
* c-cppbuiltin.c: Adjust.
* c-ubsan.c: Adjust.
* c-warn.c: Adjust.
gcc/cp/ChangeLog
2020-05-13 Jason Merrill <jason@redhat.com>
* call.c, class.c, constexpr.c, constraint.cc, decl.c, init.c,
lambda.c, lex.c, method.c, name-lookup.c, parser.c, pt.c, tree.c,
typeck2.c: Change cxx2a to cxx20.
libcpp/ChangeLog
2020-05-13 Jason Merrill <jason@redhat.com>
* include/cpplib.h (enum c_lang): Change CXX2A to CXX20.
* init.c, lex.c: Adjust.
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My recent C++ parser change to pay attention to EOF location uncovered
a separate bug. The preprocesor's EOF logic would set the EOF
location to be the beginning of the last line of text in the file --
not the 'line' after that, which contains no characters. Mostly.
This fixes things so that when we attempt to read the last line of the
main file, we don't pop the buffer until the tokenizer has a chance to
create an EOF token with the correct location information. It is then
responsible for popping the buffer. As it happens, raw string literal
tokenizing contained a bug -- it would increment the line number
prematurely, because it cached buffer->cur in a local variable, but
checked buffer->cur before updating it to figure out if it was at end
of file. We fix up that too.
The EOF token intentionally doesn't have a column number -- it's not a
position on a line, it's a non-existant line.
The testsuite churn is just correcting the EOF location diagnostics.
libcpp/
PR preprocessor/95013
* lex.c (lex_raw_string): Process line notes before incrementing.
Correct incrementing condition. Adjust for new
_cpp_get_fresh_line EOF behaviour.
(_cpp_get_fresh_line): Do not pop buffer at EOF, increment line
instead.
(_cpp_lex_direct): Adjust for new _cpp_get_fresh_line behaviour.
(cpp_directive_only_process): Assert we got a fresh line.
* traditional.c (_cpp_read_logical_line_trad): Adjust for new
_cpp_get_fresh_line behaviour.
gcc/testsuite/
* c-c++-common/goacc/pr79428-1.c: Adjust EOF diagnostic location.
* c-c++-common/gomp/pr79428-2.c: Likewise.
* g++.dg/cpp0x/decltype63.C: Likewise.
* g++.dg/cpp0x/gen-attrs-64.C: Likewise.
* g++.dg/cpp0x/pr68726.C: Likewise.
* g++.dg/cpp0x/pr78341.C: Likewise.
* g++.dg/cpp1y/pr65202.C: Likewise.
* g++.dg/cpp1y/pr65340.C: Likewise.
* g++.dg/cpp1y/pr68578.C: Likewise.
* g++.dg/cpp1z/class-deduction44.C: Likewise.
* g++.dg/diagnostic/unclosed-extern-c.C: Likewise.
* g++.dg/diagnostic/unclosed-function.C: Likewise.
* g++.dg/diagnostic/unclosed-namespace.C: Likewise.
* g++.dg/diagnostic/unclosed-struct.C: Likewise.
* g++.dg/ext/pr84598.C: Likewise.
* g++.dg/other/switch4.C: Likewise.
* g++.dg/parse/attr4.C: Likewise.
* g++.dg/parse/cond4.C: Likewise.
* g++.dg/parse/crash10.C: Likewise.
* g++.dg/parse/crash18.C: Likewise.
* g++.dg/parse/crash27.C: Likewise.
* g++.dg/parse/crash34.C: Likewise.
* g++.dg/parse/crash35.C: Likewise.
* g++.dg/parse/crash52.C: Likewise.
* g++.dg/parse/crash59.C: Likewise.
* g++.dg/parse/crash61.C: Likewise.
* g++.dg/parse/crash67.C: Likewise.
* g++.dg/parse/error14.C: Likewise.
* g++.dg/parse/error56.C: Likewise.
* g++.dg/parse/invalid1.C: Likewise.
* g++.dg/parse/parameter-declaration-1.C: Likewise.
* g++.dg/parse/parser-pr28152-2.C: Likewise.
* g++.dg/parse/parser-pr28152.C: Likewise.
* g++.dg/parse/pr68722.C: Likewise.
* g++.dg/pr46852.C: Likewise.
* g++.dg/pr46868.C: Likewise.
* g++.dg/template/crash115.C: Likewise.
* g++.dg/template/crash43.C: Likewise.
* g++.dg/template/crash90.C: Likewise.
* g++.dg/template/error-recovery1.C: Likewise.
* g++.dg/template/error57.C: Likewise.
* g++.old-deja/g++.other/crash31.C: Likewise.
* gcc.dg/empty-source-2.c: Likewise.
* gcc.dg/empty-source-3.c: Likewise.
* gcc.dg/noncompile/pr30552-3.c: Likewise.
* gcc.dg/noncompile/pr35447-1.c: Likewise.
* gcc.dg/pr20245-1.c: Likewise.
* gcc.dg/pr28419.c: Likewise.
* gcc.dg/rtl/truncated-rtl-file.c: Likewise.
* gcc.dg/unclosed-init.c: Likewise.
* obj-c++.dg/property/property-neg-6.mm: Likewise.
* obj-c++.dg/syntax-error-10.mm: Likewise.
* obj-c++.dg/syntax-error-8.mm: Likewise.
* obj-c++.dg/syntax-error-9.mm: Likewise.
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The existing directives-only code (a) punched a hole through the
libcpp interface and (b) didn't support raw string literals. This
reimplements this preprocessing mode. I added a proper callback
interface, and adjusted c-ppoutput to use it. Sadly I cannot get rid
of the libcpp/internal.h include for unrelated reasons.
The new scanner is in lex.x, and works doing some backwards scanning
when it finds a charater of interest. This reduces the number of
cases one has to deal with in forward scanning. It may have different
failure mode than forward scanning on bad tokenization.
Finally, Moved some cpp tests from the c-specific dg.gcc/cpp directory
to the c-c++-common/cpp shared directory,
libcpp/
* directives-only.c: Delete.
* Makefile.in (libcpp_a_OBJS, libcpp_a_SOURCES): Remove it.
* include/cpplib.h (enum CPP_DO_task): New enum.
(cpp_directive_only_preprocess): Declare.
* internal.h (_cpp_dir_only_callbacks): Delete.
(_cpp_preprocess_dir_only): Delete.
* lex.c (do_peek_backslask, do_peek_next, do_peek_prev): New.
(cpp_directives_only_process): New implementation.
gcc/c-family/
Reimplement directives only processing.
* c-ppoutput.c (token_streamer): Ne.
(directives_only_cb): New. Swallow ...
(print_lines_directives_only): ... this.
(scan_translation_unit_directives_only): Reimplment using the
published interface.
gcc/testsuite/
* gcc.dg/cpp/counter-[23].c: Move to c-c+_-common/cpp.
* gcc.dg/cpp/dir-only-*: Likewise.
* c-c++-common/cpp/dir-only-[78].c: New.
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From-SVN: r279813
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There are three major pieces to this support: scalar operator<=>,
synthesis of comparison operators, and rewritten/reversed overload
resolution (e.g. a < b becomes 0 > b <=> a).
Unlike other defaulted functions, where we use synthesized_method_walk to
semi-simulate what the definition of the function will be like, this patch
determines the characteristics of a comparison operator by trying to define
it.
My handling of non-dependent rewritten operators in templates can still use
some work: build_min_non_dep_op_overload can't understand the rewrites and
crashes, so I'm avoiding it for now by clearing *overload. This means we'll
do name lookup again at instantiation time, which can incorrectly mean a
different result. I'll poke at this more in stage 3.
I'm leaving out a fourth section ("strong structural equality") even though
I've implemented it, because it seems likely to change radically tomorrow.
Thanks to Tim van Deurzen and Jakub for implementing lexing of the <=>
operator, and Jonathan for the initial <compare> header.
gcc/cp/
* cp-tree.h (struct lang_decl_fn): Add maybe_deleted bitfield.
(DECL_MAYBE_DELETED): New.
(enum special_function_kind): Add sfk_comparison.
(LOOKUP_REWRITTEN, LOOKUP_REVERSED): New.
* call.c (struct z_candidate): Add rewritten and reversed methods.
(add_builtin_candidate): Handle SPACESHIP_EXPR.
(add_builtin_candidates): Likewise.
(add_candidates): Don't add a reversed candidate if the parms are
the same.
(add_operator_candidates): Split out from build_new_op_1. Handle
rewritten and reversed candidates.
(add_candidate): Swap conversions of reversed candidate.
(build_new_op_1): Swap them back. Build a second operation for
rewritten candidates.
(extract_call_expr): Handle rewritten calls.
(same_fn_or_template): New.
(joust): Handle rewritten and reversed candidates.
* class.c (add_implicitly_declared_members): Add implicit op==.
(classtype_has_op, classtype_has_defaulted_op): New.
* constexpr.c (cxx_eval_binary_expression): Handle SPACESHIP_EXPR.
(cxx_eval_constant_expression, potential_constant_expression_1):
Likewise.
* cp-gimplify.c (genericize_spaceship): New.
(cp_genericize_r): Use it.
* cp-objcp-common.c (cp_common_init_ts): Handle SPACESHIP_EXPR.
* decl.c (finish_function): Handle deleted function.
* decl2.c (grokfield): SET_DECL_FRIEND_CONTEXT on defaulted friend.
(mark_used): Check DECL_MAYBE_DELETED. Remove assumption that
defaulted functions are non-static members.
* error.c (dump_expr): Handle SPACESHIP_EXPR.
* method.c (type_has_trivial_fn): False for sfk_comparison.
(enum comp_cat_tag, struct comp_cat_info_t): New types.
(comp_cat_cache): New array variable.
(lookup_comparison_result, lookup_comparison_category)
(is_cat, cat_tag_for, spaceship_comp_cat)
(spaceship_type, genericize_spaceship)
(common_comparison_type, early_check_defaulted_comparison)
(comp_info, build_comparison_op): New.
(synthesize_method): Handle sfk_comparison. Handle deleted.
(get_defaulted_eh_spec, maybe_explain_implicit_delete)
(explain_implicit_non_constexpr, implicitly_declare_fn)
(defaulted_late_check, defaultable_fn_check): Handle sfk_comparison.
* name-lookup.c (get_std_name_hint): Add comparison categories.
* tree.c (special_function_p): Add sfk_comparison.
* typeck.c (cp_build_binary_op): Handle SPACESHIP_EXPR.
2019-11-05 Tim van Deurzen <tim@kompiler.org>
Add new tree code for the spaceship operator.
gcc/cp/
* cp-tree.def: Add new tree code.
* operators.def: New binary operator.
* parser.c: Add new token and tree code.
libcpp/
* cpplib.h: Add spaceship operator for C++.
* lex.c: Implement conditional lexing of spaceship operator for C++20.
2019-11-05 Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/
* libsupc++/compare: New header.
* libsupc++/Makefile.am (std_HEADERS): Add compare.
* include/std/version: Define __cpp_lib_three_way_comparison.
* include/std/functional: #include <compare>.
From-SVN: r277865
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As part of adding [[]]-style attributes, C2x adds the token :: for use
in scoped attribute names.
This patch adds corresponding support for that token in C to GCC. The
token is supported both for C2x and for older gnu* standards (on the
basis that extensions are normally supported in older gnu* versions;
people will expect to be able to use [[]] attributes, before C2x is
the default, without needing to use -std=gnu2x).
There are no cases in older C standards where the token : can be
followed by a token starting with : in syntactically valid sources;
the only cases the :: token could break in older standard C thus are
ones involving concatenation of pp-tokens where the result does not
end up as tokens (e.g., gets stringized). In GNU C extensions, the
main case where :: might appear in existing sources is in asm
statements, and the C parser is thus made to handle it like two
consecutive : tokens, which the C++ parser already does. A limited
test of various positionings of :: in asm statements is added to the
testsuite (in particular, to cover the syntax error when :: means too
many colons but a single : would be OK), but existing tests cover a
variety of styles there anyway.
Technically there are cases in Objective-C and OpenMP for which this
also changes how previously valid code is lexed: the objc-selector-arg
syntax allows multiple consecutive : tokens (although I don't think
they are particularly useful there), while OpenMP syntax includes
array section syntax such as [:] which, before :: was a token, could
also be written as [::> (there might be other OpenMP cases potentially
affected, I didn't check all the OpenMP syntax in detail). I don't
think either of those cases affects the basis for supporting the ::
token in all -std=gnu* modes, or that there is any obvious need to
special-case handling of CPP_SCOPE tokens for those constructs the way
there is for asm statements.
cpp_avoid_paste, which determines when spaces need adding between
tokens in preprocessed output where there wouldn't otherwise be
whitespace between them (e.g. if stringized), already inserts space
between : and : unconditionally, rather than only for C++, so no
change is needed there (but a C2x test is added that such space is
indeed inserted).
Bootstrapped with no regressions on x86-64-pc-linux-gnu.
gcc/c:
* c-parser.c (c_parser_asm_statement): Handle CPP_SCOPE like two
CPP_COLON tokens.
gcc/testsuite:
* gcc.dg/asm-scope-1.c, gcc.dg/cpp/c11-scope-1.c,
gcc.dg/cpp/c17-scope-1.c, gcc.dg/cpp/c2x-scope-1.c,
gcc.dg/cpp/c2x-scope-2.c, gcc.dg/cpp/c90-scope-1.c,
gcc.dg/cpp/c94-scope-1.c, gcc.dg/cpp/c99-scope-1.c,
gcc.dg/cpp/gnu11-scope-1.c, gcc.dg/cpp/gnu17-scope-1.c,
gcc.dg/cpp/gnu89-scope-1.c, gcc.dg/cpp/gnu99-scope-1.c: New tests.
libcpp:
* include/cpplib.h (struct cpp_options): Add member scope.
* init.c (struct lang_flags, lang_defaults): Likewise.
(cpp_set_lang): Set scope member of pfile.
* lex.c (_cpp_lex_direct): Test CPP_OPTION (pfile, scope) not
CPP_OPTION (pfile, cplusplus) for creating CPP_SCOPE tokens.
From-SVN: r276434
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libcpp/ChangeLog
2019-09-19 Lewis Hyatt <lhyatt@gmail.com>
PR c/67224
* charset.c (_cpp_valid_utf8): New function to help lex UTF-8 tokens.
* internal.h (_cpp_valid_utf8): Declare.
* lex.c (forms_identifier_p): Use it to recognize UTF-8 identifiers.
(_cpp_lex_direct): Handle UTF-8 in identifiers and CPP_OTHER tokens.
Do all work in "default" case to avoid slowing down typical code paths.
Also handle $ and UCN in the default case for consistency.
gcc/Changelog
2019-09-19 Lewis Hyatt <lhyatt@gmail.com>
PR c/67224
* doc/cpp.texi: Document support for extended characters in
identifiers.
* doc/cppopts.texi: Likewise.
gcc/testsuite/ChangeLog
2019-09-19 Lewis Hyatt <lhyatt@gmail.com>
PR c/67224
* c-c++-common/cpp/ucnid-2011-1-utf8.c: New test.
* g++.dg/cpp/ucnid-1-utf8.C: New test.
* g++.dg/cpp/ucnid-2-utf8.C: New test.
* g++.dg/cpp/ucnid-3-utf8.C: New test.
* g++.dg/cpp/ucnid-4-utf8.C: New test.
* g++.dg/other/ucnid-1-utf8.C: New test.
* gcc.dg/cpp/ucnid-1-utf8.c: New test.
* gcc.dg/cpp/ucnid-10-utf8.c: New test.
* gcc.dg/cpp/ucnid-11-utf8.c: New test.
* gcc.dg/cpp/ucnid-12-utf8.c: New test.
* gcc.dg/cpp/ucnid-13-utf8.c: New test.
* gcc.dg/cpp/ucnid-14-utf8.c: New test.
* gcc.dg/cpp/ucnid-15-utf8.c: New test.
* gcc.dg/cpp/ucnid-2-utf8.c: New test.
* gcc.dg/cpp/ucnid-3-utf8.c: New test.
* gcc.dg/cpp/ucnid-4-utf8.c: New test.
* gcc.dg/cpp/ucnid-6-utf8.c: New test.
* gcc.dg/cpp/ucnid-7-utf8.c: New test.
* gcc.dg/cpp/ucnid-9-utf8.c: New test.
* gcc.dg/ucnid-1-utf8.c: New test.
* gcc.dg/ucnid-10-utf8.c: New test.
* gcc.dg/ucnid-11-utf8.c: New test.
* gcc.dg/ucnid-12-utf8.c: New test.
* gcc.dg/ucnid-13-utf8.c: New test.
* gcc.dg/ucnid-14-utf8.c: New test.
* gcc.dg/ucnid-15-utf8.c: New test.
* gcc.dg/ucnid-16-utf8.c: New test.
* gcc.dg/ucnid-2-utf8.c: New test.
* gcc.dg/ucnid-3-utf8.c: New test.
* gcc.dg/ucnid-4-utf8.c: New test.
* gcc.dg/ucnid-5-utf8.c: New test.
* gcc.dg/ucnid-6-utf8.c: New test.
* gcc.dg/ucnid-7-utf8.c: New test.
* gcc.dg/ucnid-8-utf8.c: New test.
* gcc.dg/ucnid-9-utf8.c: New test.
From-SVN: r275979
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https://gcc.gnu.org/ml/gcc-patches/2019-09/msg00280.html
libcpp/
PR preprocessor/91639
* directives.c (do_include_common): Tell lexer we're a #include.
* files.c (_cpp_stack_file): Lexer will have always incremented.
* internal.h (struct cpp_context): Extend in_directive's
semantics.
* lex.c (_cpp_lex_direct): Increment line for final \n when lexing
for an ISO #include.
* line-map.c (linemap_line_start): Remember if we overflowed.
gcc/testsuite/
PR preprocessor/91639
* c-c++-common/cpp/pr91639.c: New.
* c-c++-common/cpp/pr91639-one.h: New.
* c-c++-common/cpp/pr91639-two.h: New.
From-SVN: r275402
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libcpp/ChangeLog:
2019-05-19 Andrew Pinski <apinski@marvell.com>
PR pch/81721
* lex.c (cpp_token_val_index <case SPELL_OPERATOR>): If tok->flags
has NAMED_OP set, then return CPP_TOKEN_FLD_NODE.
gcc/testsuite/ChangeLog:
2019-05-19 Andrew Pinski <apinski@marvell.com>
PR pch/81721
* g++.dg/pch/operator-1.C: New testcase.
* g++.dg/pch/operator-1.Hs: New file.
From-SVN: r271395
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From-SVN: r267494
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Historically GCC used location_t, while libcpp used source_location.
This inconsistency has been annoying me for a while, so this patch
removes source_location in favor of location_t throughout
(as the latter is shorter).
gcc/ChangeLog:
* builtins.c: Replace "source_location" with "location_t".
* diagnostic-show-locus.c: Likewise.
* diagnostic.c: Likewise.
* dumpfile.c: Likewise.
* gcc-rich-location.h: Likewise.
* genmatch.c: Likewise.
* gimple.h: Likewise.
* gimplify.c: Likewise.
* input.c: Likewise.
* input.h: Likewise. Eliminate the typedef.
* omp-expand.c: Likewise.
* selftest.h: Likewise.
* substring-locations.h (get_source_location_for_substring):
Rename to..
(get_location_within_string): ...this.
* tree-cfg.c: Replace "source_location" with "location_t".
* tree-cfgcleanup.c: Likewise.
* tree-diagnostic.c: Likewise.
* tree-into-ssa.c: Likewise.
* tree-outof-ssa.c: Likewise.
* tree-parloops.c: Likewise.
* tree-phinodes.c: Likewise.
* tree-phinodes.h: Likewise.
* tree-ssa-loop-ivopts.c: Likewise.
* tree-ssa-loop-manip.c: Likewise.
* tree-ssa-phiopt.c: Likewise.
* tree-ssa-phiprop.c: Likewise.
* tree-ssa-threadupdate.c: Likewise.
* tree-ssa.c: Likewise.
* tree-ssa.h: Likewise.
* tree-vect-loop-manip.c: Likewise.
gcc/c-family/ChangeLog:
* c-common.c (c_get_substring_location): Update for renaming of
get_source_location_for_substring to get_location_within_string.
* c-lex.c: Replace "source_location" with "location_t".
* c-opts.c: Likewise.
* c-ppoutput.c: Likewise.
gcc/c/ChangeLog:
* c-decl.c: Replace "source_location" with "location_t".
* c-tree.h: Likewise.
* c-typeck.c: Likewise.
* gimple-parser.c: Likewise.
gcc/cp/ChangeLog:
* call.c: Replace "source_location" with "location_t".
* cp-tree.h: Likewise.
* cvt.c: Likewise.
* name-lookup.c: Likewise.
* parser.c: Likewise.
* typeck.c: Likewise.
gcc/fortran/ChangeLog:
* cpp.c: Replace "source_location" with "location_t".
* gfortran.h: Likewise.
gcc/go/ChangeLog:
* go-gcc-diagnostics.cc: Replace "source_location" with "location_t".
* go-gcc.cc: Likewise.
* go-linemap.cc: Likewise.
* go-location.h: Likewise.
* gofrontend/README: Likewise.
gcc/jit/ChangeLog:
* jit-playback.c: Replace "source_location" with "location_t".
gcc/testsuite/ChangeLog:
* g++.dg/plugin/comment_plugin.c: Replace "source_location" with
"location_t".
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c: Likewise.
libcc1/ChangeLog:
* libcc1plugin.cc: Replace "source_location" with "location_t".
(plugin_context::get_source_location): Rename to...
(plugin_context::get_location_t): ...this.
* libcp1plugin.cc: Likewise.
libcpp/ChangeLog:
* charset.c: Replace "source_location" with "location_t".
* directives-only.c: Likewise.
* directives.c: Likewise.
* errors.c: Likewise.
* expr.c: Likewise.
* files.c: Likewise.
* include/cpplib.h: Likewise. Rename MAX_SOURCE_LOCATION to
MAX_LOCATION_T.
* include/line-map.h: Likewise.
* init.c: Likewise.
* internal.h: Likewise.
* lex.c: Likewise.
* line-map.c: Likewise.
* location-example.txt: Likewise.
* macro.c: Likewise.
* pch.c: Likewise.
* traditional.c: Likewise.
From-SVN: r266085
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https://gcc.gnu.org/ml/gcc-patches/2018-10/msg02044.html
libcpp/
* internal.h (struct cpp_reader): Rename forced_token_location_p
to forced_token_location and drop its pointerness.
* include/cpplib.h (cpp_force_token_locations): Take location, not
pointer to one.
* init.c (cpp_create_reader): Adjust.
* lex.c (cpp_read_main_file):
gcc/c-family/
* c-opts.c (c_finish_options): Adjust cpp_force_token_locations call.
gcc/fortran/
* cpp.c (gfc_cpp_init): Adjust cpp_force_token_locations call.
From-SVN: r265692
|
|
https://gcc.gnu.org/ml/gcc-patches/2018-08/msg01037.html
* include/cpplib.h (enum cpp_macro_kind): New.
(struct cpp_macro): Make body trailing array. Add kind field,
delete traditional flag.
* internal.h (_cpp_new_macro): Declare.
(_cpp_reserve_room): New inline.
(_cpp_commit_buf): Declare.
(_cpp_create_trad_definition): Return new macro.
* lex.c (_cpp_commit_buff): New.
* macro.c (macro_real_token_count): Count backwards.
(replace_args): Pointer equality not orderedness.
(_cpp_save_parameter): Use _cpp_reserve_room.
(alloc_expansion_token): Delete.
(lex_expansion_token): Return macro pointer. Use _cpp_reserve_room.
(create_iso_definition): Allocate macro itself. Adjust for
different allocation ordering.
(_cpp_new_macro): New.
(_cpp_create_definition): Adjust for API changes.
* traditional.c (push_replacement_text): Don't set traditional
flag.
(save_replacement_text): Likewise.
(_cpp_create_trad_definition): Allocate macro itself, Adjust for
different allocation ordering.
From-SVN: r263622
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https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00897.html
libcpp/
* include/cpplib.h (cpp_user_macro_p, cpp_builtin_macro_p)
(cpp_macro_p): New inlines.
* directives.c (do_pragma_poison): Use cpp_macro_p.
(do_ifdef, do_ifndef): Likewise. Use _cpp_maybe_notify_macro_use.
(cpp_pop_definition): Use cpp_macro_p. Move _cpp_free_definition
earlier. Don't zap node directly.
* expr.c (parse_defined): Use _cpp_maybe_notify_macro_use &
cpp_macro_p.
* files.c (should_stack_file): Use cpp_macro_p.
* identifiers.c (cpp_defined): Likewise.
* internal.h (_cpp_mark_macro): Use cpp_user_macro_p.
(_cpp_notify_macro_use): Declare.
(_cpp_maybe_notify_macro_use): New inline.
* lex.c (is_macro): Use cpp_macro_p.
* macro.c (_cpp_warn_if_unused_macro): Use cpp_user_macro_p.
(enter_macro_context): Likewise.
(_cpp_create_definition): Use cpp_builtin_macro_p,
cpp_user_macro_p. Move _cpp_free_definition earlier.
(_cpp_notify_macro_use): New, broken out of multiple call sites.
* traditional.c (fun_like_macro_p): Use cpp_builtin_macro_p.
(maybe_start_funlike, _cpp_scan_out_logical_line)
(push_replacement_text): Likewise.
gcc/c-family/
* c-ada-spec.c (count_ada_macro): Use cpp_user_macro_p.
(store_ada_macro): Likewise.
* c-ppoutput.c (cb_used_define, dump_macro): Likewise.
* c-spellcheck.cc (should-suggest_as_macro_p): Likewise,
gcc/
* config/rs6000/rs6000-c.c (rs6000_macro_to_expend): Use cpp_macro_p.
* config/powerpcspc/powerpcspe-c.c (rs6000_macro_to_expend): Likewise.
gcc/cp/
* name-lookup.c (lookup_name_fuzzy): Likewise.
gcc/fortran/
* cpp.c (dump_macro): Use cpp_user_macro_p.
From-SVN: r263587
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* lex.c (_cpp_lex_direct): Use CPP_DL_NOTE instead of CPP_DL_PEDWARN,
CPP_DL_WARNING or CPP_DL_ERROR for note that diagnostics for C++ style
comments is reported only once per file and guard those calls on the
preceding cpp_error returning true.
* gcc.dg/cpp/pr61854-c90.c (foo): Expect a note, rather than error.
* gcc.dg/cpp/pr61854-c94.c (foo): Likewise.
* gcc.dg/cpp/pr61854-4.c (foo): Likewise.
* gcc.dg/cpp/pr61854-8.c: New test.
From-SVN: r262832
|
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gcc/testsuite:
PR preprocessor/84517
* g++.dg/cpp0x/udlit-macros.C: Expect a warning for ""__FILE__.
libcpp:
PR preprocessor/84517
* lex.c (is_macro_not_literal_suffix): New function.
(lex_raw_string, lex_string): Use is_macro_not_literal_suffix to
decide when to issue -Wliteral-suffix warnings.
From-SVN: r258069
|
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gcc/ChangeLog:
2018-01-10 Kelvin Nilsen <kelvin@gcc.gnu.org>
* config/rs6000/rs6000-p8swap.c (rs6000_sum_of_two_registers_p):
New function.
(rs6000_quadword_masked_address_p): Likewise.
(quad_aligned_load_p): Likewise.
(quad_aligned_store_p): Likewise.
(const_load_sequence_p): Add comment to describe the outer-most loop.
(mimic_memory_attributes_and_flags): New function.
(rs6000_gen_stvx): Likewise.
(replace_swapped_aligned_store): Likewise.
(rs6000_gen_lvx): Likewise.
(replace_swapped_aligned_load): Likewise.
(replace_swapped_load_constant): Capitalize argument name in
comment describing this function.
(rs6000_analyze_swaps): Add a third pass to search for vector loads
and stores that access quad-word aligned addresses and replace
with stvx or lvx instructions when appropriate.
* config/rs6000/rs6000-protos.h (rs6000_sum_of_two_registers_p):
New function prototype.
(rs6000_quadword_masked_address_p): Likewise.
(rs6000_gen_lvx): Likewise.
(rs6000_gen_stvx): Likewise.
* config/rs6000/vsx.md (*vsx_le_perm_load_<mode>): For modes
VSX_D (V2DF, V2DI), modify this split to select lvx instruction
when memory address is aligned.
(*vsx_le_perm_load_<mode>): For modes VSX_W (V4SF, V4SI), modify
this split to select lvx instruction when memory address is aligned.
(*vsx_le_perm_load_v8hi): Modify this split to select lvx
instruction when memory address is aligned.
(*vsx_le_perm_load_v16qi): Likewise.
(four unnamed splitters): Modify to select the stvx instruction
when memory is aligned.
gcc/testsuite/ChangeLog:
2018-01-10 Kelvin Nilsen <kelvin@gcc.gnu.org>
* gcc.target/powerpc/pr48857.c: Modify dejagnu directives to look
for lvx and stvx instead of lxvd2x and stxvd2x and require
little-endian target. Add comments.
* gcc.target/powerpc/swaps-p8-28.c: Add functions for more
comprehensive testing.
* gcc.target/powerpc/swaps-p8-29.c: Likewise.
* gcc.target/powerpc/swaps-p8-30.c: Likewise.
* gcc.target/powerpc/swaps-p8-31.c: Likewise.
* gcc.target/powerpc/swaps-p8-32.c: Likewise.
* gcc.target/powerpc/swaps-p8-33.c: Likewise.
* gcc.target/powerpc/swaps-p8-34.c: Likewise.
* gcc.target/powerpc/swaps-p8-35.c: Likewise.
* gcc.target/powerpc/swaps-p8-36.c: Likewise.
* gcc.target/powerpc/swaps-p8-37.c: Likewise.
* gcc.target/powerpc/swaps-p8-38.c: Likewise.
* gcc.target/powerpc/swaps-p8-39.c: Likewise.
* gcc.target/powerpc/swaps-p8-40.c: Likewise.
* gcc.target/powerpc/swaps-p8-41.c: Likewise.
* gcc.target/powerpc/swaps-p8-42.c: Likewise.
* gcc.target/powerpc/swaps-p8-43.c: Likewise.
* gcc.target/powerpc/swaps-p8-44.c: Likewise.
* gcc.target/powerpc/swaps-p8-45.c: Likewise.
* gcc.target/powerpc/vec-extract-2.c: Add comment and remove
scan-assembler-not directives that forbid lvx and xxpermdi.
* gcc.target/powerpc/vec-extract-3.c: Likewise.
* gcc.target/powerpc/vec-extract-5.c: Likewise.
* gcc.target/powerpc/vec-extract-6.c: Likewise.
* gcc.target/powerpc/vec-extract-7.c: Likewise.
* gcc.target/powerpc/vec-extract-8.c: Likewise.
* gcc.target/powerpc/vec-extract-9.c: Likewise.
* gcc.target/powerpc/vsx-vector-6-le.c: Change
scan-assembler-times directives to reflect different numbers of
expected xxlnor, xxlor, xvcmpgtdp, and xxland instructions.
libcpp/ChangeLog:
2018-01-10 Kelvin Nilsen <kelvin@gcc.gnu.org>
* lex.c (search_line_fast): Remove illegal coercion of an
unaligned pointer value to vector pointer type and replace with
use of __builtin_vec_vsx_ld () built-in function, which operates
on unaligned pointer values.
From-SVN: r256656
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From-SVN: r256169
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on __AARCH64EB__
2017-12-20 Michael Weiser <michael.weiser@gmx.de>
PR preprocessor/83492
* lex.c (search_line_fast) [__ARM_NEON && __ARM_64BIT_STATE]:
Fix selection of big-endian shift parameters by using
__ARM_BIG_ENDIAN.
From-SVN: r255896
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This implements __VA_OPT__, a new preprocessor feature added in C++2A.
The paper can be found here:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0306r4.html
gcc/ChangeLog
* doc/cpp.texi (Variadic Macros): Document __VA_OPT__.
gcc/testsuite/ChangeLog
* c-c++-common/cpp/va-opt-pedantic.c: New file.
* c-c++-common/cpp/va-opt.c: New file.
* c-c++-common/cpp/va-opt-error.c: New file.
libcpp/ChangeLog
* pch.c (cpp_read_state): Set n__VA_OPT__.
* macro.c (vaopt_state): New class.
(_cpp_arguments_ok): Check va_opt flag.
(replace_args, create_iso_definition): Use vaopt_state.
* lex.c (lex_identifier_intern): Possibly issue errors for
__VA_OPT__.
(lex_identifier): Likewise.
(maybe_va_opt_error): New function.
* internal.h (struct lexer_state) <va_args_ok>: Update comment.
(struct spec_nodes) <n__VA_OPT__>: New field.
* init.c (struct lang_flags) <va_opt>: New field.
(lang_defaults): Add entries for C++2A. Update all entries for
va_opt.
(cpp_set_lang): Initialize va_opt.
* include/cpplib.h (struct cpp_options) <va_opt>: New field.
* identifiers.c (_cpp_init_hashtable): Initialize n__VA_OPT__.
From-SVN: r254707
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/libcpp
2017-11-06 Mukesh Kapoor <mukesh.kapoor@oracle.com>
PR c++/80955
* lex.c (lex_string): When checking for a valid macro for the
warning related to -Wliteral-suffix (CPP_W_LITERAL_SUFFIX),
check that the macro name does not start with an underscore
before calling is_macro().
/gcc/testsuite
2017-11-06 Mukesh Kapoor <mukesh.kapoor@oracle.com>
PR c++/80955
* g++.dg/cpp0x/udlit-macros.C: New.
From-SVN: r254443
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2017-11-05 Tom de Vries <tom@codesourcery.com>
PR other/82784
* lex.c (BUF_APPEND): Remove semicolon after
"do {} while (0)".
From-SVN: r254424
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gcc/testsuite/ChangeLog:
* g++.dg/plugin/comment_plugin.c: New test plugin.
* g++.dg/plugin/comments-1.C: New test file.
* g++.dg/plugin/plugin.exp (plugin_test_list): Add the above.
libcpp/ChangeLog:
* include/cpplib.h (struct cpp_callbacks): Add "comment"
callback.
* lex.c (_cpp_lex_direct): Call the comment callback if non-NULL.
From-SVN: r248901
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gcc:
* alias.c (base_alias_check): Fix typo in comment.
* cgraph.h (class ipa_polymorphic_call_context): Likewise.
* cgraphunit.c (symbol_table::compile): Likewise.
* collect2.c (maybe_run_lto_and_relink): Likewise.
* config/arm/arm.c (arm_thumb1_mi_thunk): Likewise.
* config/avr/avr-arch.h (avr_arch_info_t): Likewise.
* config/avr/avr.c (avr_map_op_t): Likewise.
* config/cr16/cr16.h (DATA_ALIGNMENT): Likewise.
* config/epiphany/epiphany.c (TARGET_ARG_PARTIAL_BYTES): Likewise.
* config/epiphany/epiphany.md (movcc): Likewise.
* config/i386/i386.c (legitimize_pe_coff_extern_decl): Likewise.
* config/m68k/m68k.c (struct _sched_ib, m68k_sched_variable_issue):
Likewise.
* config/mips/mips.c (mips_save_restore_reg): Likewise.
* config/rx/rx.c (rx_is_restricted_memory_address): Likewise.
* config/s390/s390.c (Z10_EARLYLOAD_DISTANCE): Likewise.
* config/sh/sh.c (sh_rtx_costs): Likewise.
* fold-const.c (fold_truth_andor): Likewise.
* genautomata.c (collapse_flag): Likewise.
* gengtype.h (struct type::u::s): Likewise.
* gensupport.c (has_subst_attribute, add_mnemonic_string): Likewise.
* input.c (FORMAT_AMOUNT): Likewise.
* ipa-cp.c (class ipcp_lattice, agg_replacements_to_vector)
(known_aggs_to_agg_replacement_list): Likewise.
* ipa-inline-analysis.c: Likewise.
* ipa-inline.h (estimate_edge_time, estimate_edge_hints): Likewise.
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_class): Likewise.
* loop-unroll.c (analyze_insn_to_expand_var): Likewise.
* lra.c (lra_optional_reload_pseudos, lra_subreg_reload_pseudos):
Likewise.
* modulo-sched.c (apply_reg_moves): Likewise.
* omp-expand.c (build_omp_regions_1): Likewise.
* trans-mem.c (struct tm_wrapper_hasher): Likewise.
* tree-ssa-loop-ivopts.c (may_eliminate_iv): Likewise.
* tree-ssa-loop-niter.c (maybe_lower_iteration_bound): Likewise.
* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Likewise.
* value-prof.c: Likewise.
* var-tracking.c (val_reset): Likewise.
gcc/ada:
* doc/gnat_ugn/gnat_and_program_execution.rst: Fix typo.
* g-socket.adb (To_Host_Entry): Fix typo in comment.
* gnat_ugn.texi: Fix typo.
* raise.c (_gnat_builtin_longjmp): Fix capitalization in comment.
* s-stposu.adb (Allocate_Any_Controlled): Fix typo in comment.
* sem_ch3.adb (Build_Derived_Record_Type): Likewise.
* sem_util.adb (Mark_Coextensions): Likewise.
* sem_util.ads (Available_Full_View_Of_Component): Likewise.
gcc/c:
* c-array-notation.c: Fix typo in comment.
gcc/c-family:
* c-warn.c (do_warn_double_promotion): Fix typo in comment.
gcc/cp:
* class.c (update_vtable_entry_for_fn): Fix typo in comment.
* decl2.c (one_static_initialization_or_destruction): Likewise.
* name-lookup.c (store_bindings): Likewise.
* parser.c (make_call_declarator): Likewise.
* pt.c (check_explicit_specialization): Likewise.
gcc/testsuite:
* g++.old-deja/g++.benjamin/scope02.C: Fix typo in comment.
* gcc.dg/20031012-1.c: Likewise.
* gcc.dg/ipa/ipcp-1.c: Likewise.
* gcc.dg/torture/matrix-3.c: Likewise.
* gcc.target/powerpc/ppc-spe.c: Likewise.
* gcc.target/rx/zero-width-bitfield.c: Likewise.
libcpp:
* include/line-map.h (LINEMAPS_MACRO_MAPS): Fix typo in comment.
* lex.c (search_line_fast): Likewise.
* pch.h (cpp_valid_state): Likewise.
libdecnumber:
* decCommon.c (decFloatFromPackedChecked): Fix typo in comment.
* decNumber.c (decNumberPower, decMultiplyOp): Likewise.
libgcc:
* config/c6x/pr-support.c (__gnu_unwind_execute): Fix typo in comment.
libitm:
* libitm_i.h (sutrct gtm_thread): Fix typo in comment.
From-SVN: r246664
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* lex.c (search_line_fast) [__ARM_NEON && __ARM_64BIT_STATE]:
Convert 64-bit value to boolean before passing to
__builtin_expect.
From-SVN: r246312
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From-SVN: r243994
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gcc/ChangeLog:
PR preprocessor/78680
PR preprocessor/78811
* input.c (struct selftest::lexer_test): Add field
m_implicitly_expect_EOF.
(selftest::lexer_error_sink): New class.
(selftest::lexer_error_sink::s_singleton): New global.
(selftest::lexer_test::lexer_test): Initialize new field
"m_implicitly_expect_EOF".
(selftest::lexer_test::~lexer_test): Conditionalize the
check for the EOF token on the new field.
(selftest::test_lexer_string_locations_raw_string_unterminated):
New function.
(selftest::input_c_tests): Call the new test.
libcpp/ChangeLog:
PR preprocessor/78680
PR preprocessor/78811
* lex.c (_cpp_lex_direct): Only determine the end-location of
the token and build a range for non-reserved start locations.
Do not do it for EOF tokens.
From-SVN: r243721
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Fix for PR preprocessor/78680
PR preprocessor/78680 identifies a crash when attempting to issue
a -Wformat warning, where the format string includes a string token
split across multiple physical source lines via backslash-continued
lines.
The issue is that libcpp is generating bogus range information for
such tokens.
For example, in:
void fn1() {
__builtin_printf("\
%ld.\n\
2\n"); };
the range of the string token is printed as:
__builtin_printf("\
^~
whereas the range ought to be:
__builtin_printf("\
^~
%ld.\n\
~~~~~~~
2\n"); };
~~~~
The root cause is that the line notes expressing the update
of the buffer in lex.c aren't yet updated when the end-point of
the token is computed
3095 tok_range.m_finish
3096 = linemap_position_for_column (pfile->line_table,
3097 CPP_BUF_COLUMN (buffer, buffer->cur));
so that the physical line is still regarded as that of the start
of the token, and, where CPP_BUF_COLUMN uses (BUF)->line_base,
line_base is still the location of the first physical line in the
and hence the column information is too large (as if it were the
offset in the *logical* line).
(the printed range is somewhat misleading; the actual buggy range
extends beyond the "\ in the line, but within diagnostic-show-locus.c
layout::print_annotation_line only prints up to the xbound set by
layout::print_source_line and so truncates most of the buggy range).
The fix is to ensure that line notes are handled before calculating
the end-point of the token range.
This leads to the range for the string token being correctly
computed, as:
__builtin_printf("\
^~
%ld.\n\
~~~~~~~
2\n"); };
~~~~
and this leads to get_substring_ranges_for_loc failing gracefully,
rather than crashing.
gcc/testsuite/ChangeLog:
PR preprocessor/78680
* gcc.dg/format/pr78680.c: New test case.
* gcc.dg/plugin/diagnostic-test-expressions-1.c
(test_multiline_token): New function.
* gcc.dg/plugin/diagnostic-test-string-literals-1.c
(test_backslash_continued_logical_lines): New function.
libcpp/ChangeLog:
PR preprocessor/78680
* lex.c (_cpp_lex_direct): Ensure line notes are processed before
computing the end-point of the token.
From-SVN: r243567
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* lex.c (search_line_fast): New implementation for AArch64.
From-SVN: r241964
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* common.opt (Wimplicit-fallthrough) Turn into alias to
-Wimplicit-fallthrough=3. Remove EnabledBy.
(Wimplicit-fallthrough=): New option.
* gimplify.c (warn_implicit_fallthrough_r): Use
OPT_Wimplicit_fallthrough_ instead of OPT_Wimplicit_fallthrough.
* doc/invoke.texi (-Wimplicit-fallthrough): Document as alias
to -Wimplicit-fallthrough=3.
(-Wimplicit-fallthrough=): Document.
gcc/c-family/
* c.opt (Wextra): Add as C/C++/ObjC/ObjC++ option.
(Wimplicit-fallthrough=): Enable for these languages by -Wextra.
* c-opts.c (sanitize_cpp_opts): Initialize
cpp_opts->cpp_warn_implicit_fallthrough.
gcc/testsuite/
* c-c++-common/Wimplicit-fallthrough-25.c: New test.
* c-c++-common/Wimplicit-fallthrough-26.c: New test.
* c-c++-common/Wimplicit-fallthrough-27.c: New test.
* c-c++-common/Wimplicit-fallthrough-28.c: New test.
* c-c++-common/Wimplicit-fallthrough-29.c: New test.
* c-c++-common/Wimplicit-fallthrough-30.c: New test.
* c-c++-common/Wimplicit-fallthrough-31.c: New test.
* c-c++-common/Wimplicit-fallthrough-32.c: New test.
* c-c++-common/Wimplicit-fallthrough-33.c: New test.
libcpp/
* include/cpplib.h (struct cpp_options): Add
cpp_warn_implicit_fallthrough.
* init.c (cpp_create_reader): Initialize it to 0.
* lex.c (fallthrough_comment_p): Handle different
cpp_warn_implicit_fallthrough levels. Whitespace fixes.
From-SVN: r241013
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* doc/invoke.texi: Document accepting Else, fallthrough.
* lex.c (fallthrough_comment_p): Accept Else, fallthrough.
* c-c++-common/Wimplicit-fallthrough-23.c (foo): Add further tests.
From-SVN: r240886
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* doc/invoke.texi (-Wimplicit-fallthrough): Document FALLTHRU comment
style changes.
* lex.c (fallthrough_comment_p): Extend to handle more common FALLTHRU
comment styles.
* c-c++-common/Wimplicit-fallthrough-23.c (foo): Add further tests.
From-SVN: r240885
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