qing zhao [Wed, 2 Dec 2020 22:48:02 +0000 (23:48 +0100)]
rtl-optimization: Fix data flow maintenance bug in reg-stack.c [pr97777]
reg-stack pass does not maintain the data flow information correctly.
call df_insn_rescan_all after the transformation is done.
gcc/
PR rtl-optimization/97777
* reg-stack.c (rest_of_handle_stack_regs): call
df_insn_rescan_all if reg_to_stack return true.
gcc/testsuite/
PR rtl-optimization/97777
* gcc.target/i386/pr97777.c: New test.
Jonathan Wakely [Wed, 2 Dec 2020 21:39:08 +0000 (21:39 +0000)]
libstdc++: Fix std::any pretty printer [PR 68735]
This fixes errors seen on powerpc64 (big endian only) due to the
printers for std::any and std::experimental::any being unable to find
the manager function.
libstdc++-v3/ChangeLog:
PR libstdc++/65480
PR libstdc++/68735
* python/libstdcxx/v6/printers.py (function_pointer_to_name):
New helper function to get the name of a function from its
address.
(StdExpAnyPrinter.__init__): Use it.
Jason Merrill [Thu, 26 Nov 2020 10:45:02 +0000 (05:45 -0500)]
c++: Give better placeholder diagnostic
We were saying 'auto parameter not permitted' in a place where 'auto' is in
fact permitted in C++20, but a class template placeholder is not.
gcc/cp/ChangeLog:
* decl.c (grokdeclarator): Improve diagnostic for
disallowed CTAD placeholder.
gcc/testsuite/ChangeLog:
* g++.dg/other/pr88187.C: Adjust expected error.
* g++.dg/cpp2a/class-deduction-abbrev1.C: New test.
Jason Merrill [Tue, 24 Nov 2020 23:21:38 +0000 (18:21 -0500)]
c++: Improve init handling
While looking at another issue I noticed that in a template we were failing
to find the INIT_EXPR we were looking for, and so ended up doing redundant
processing. No testcase, as the redundant processing ended up getting the
right result.
gcc/cp/ChangeLog:
* decl.c (check_initializer): Also look through STMT_EXPR
and BIND_EXPR.
Nathan Sidwell [Wed, 2 Dec 2020 20:53:23 +0000 (12:53 -0800)]
c++: typename_type structural comparison
For modules we need to compare structurally all the way down. This
means inhibiting typename_type resolution, independent of comparing
specializations.
gcc/cp/
* cp-tree.h (comparing_typenames): Declare.
* pt.c (comparing_typenames): Define.
(spec_hasher::equal): Increment it around comparisons.
* typeck.c (structural_comptypes): Adjust TYPENAME resolution
check.
Jason Merrill [Tue, 1 Dec 2020 15:46:13 +0000 (10:46 -0500)]
git: Tell git send-email where to send patches.
I've been using
git send-email --annotate --suppress-from --to=gcc-patches@gcc.gnu.org \
${@:-HEAD^} ':!*/ChangeLog' ':!*configure'
for sending most patches, but it occurs to me that it would be useful to put
the To: address in the configury.
If someone were feeling ambitious, they could write a script to analyze a
patch and add the relevant maintainers to To: or CC:.
contrib/ChangeLog:
* gcc-git-customization.sh: Configure sendemail.to.
Marek Polacek [Tue, 1 Dec 2020 15:39:08 +0000 (10:39 -0500)]
c++: Fix ICE with inline variable in template [PR97975]
In this test, we have
static inline const int c = b;
in a class template, and we call store_init_value as usual. There, the
value is
IMPLICIT_CONV_EXPR<const float>(b)
which is is_nondependent_static_init_expression but isn't
is_nondependent_constant_expression (they only differ in STRICT).
We call fold_non_dependent_expr, but that just returns the expression
because it only instantiates is_nondependent_constant_expression
expressions. Since we're not checking the initializer of a constexpr
variable, we go on to call maybe_constant_init, whereupon we crash
because it tries to evaluate all is_nondependent_static_init_expression
expressions, which our value is, but it still contains a template code.
I think the fix is to call fold_non_dependent_init instead of
maybe_constant_init, and only call fold_non_dependent_expr on the
"this is a constexpr variable" path so as to avoid instantiating twice
in a row. Outside a template this should also avoid evaluating the
value twice.
gcc/cp/ChangeLog:
PR c++/97975
* constexpr.c (fold_non_dependent_init): Add a tree parameter.
Use it.
* cp-tree.h (fold_non_dependent_init): Add a tree parameter with
a default value.
* typeck2.c (store_init_value): Call fold_non_dependent_expr
only when checking the initializer for constexpr variables.
Call fold_non_dependent_init instead of maybe_constant_init.
gcc/testsuite/ChangeLog:
PR c++/97975
* g++.dg/cpp1z/inline-var8.C: New test.
Marek Polacek [Mon, 30 Nov 2020 19:53:24 +0000 (14:53 -0500)]
c++: Fix tsubst ICE with invalid code [PR97993, PR97187]
I had a strong sense of deja vu when looking into this, and no wonder,
since this is almost identical to c++/95728.
Since r11-423 tsubst_copy_and_build/TREE_LIST uses tsubst_tree_list
instead of open coding it. While the latter could return an error
node wrapped in a TREE_LIST, the former can return a naked error node.
That broke in tsubst_copy_and_build/NEW_EXPR, because we were accessing
TREE_VALUE of an error node.
gcc/cp/ChangeLog:
PR c++/97187
PR c++/97993
* pt.c (tsubst_copy_and_build) <case NEW_EXPR>: Return error_mark_node
if init is erroneous.
gcc/testsuite/ChangeLog:
PR c++/97187
PR c++/97993
* g++.dg/eh/crash2.C: New test.
* g++.dg/template/crash132.C: New test.
Nathan Sidwell [Wed, 2 Dec 2020 19:22:35 +0000 (11:22 -0800)]
C++: Module-specific tree flags
gcc/cp/
* cp-tree.h (DECL_MODULE_PURVIEW_P, DECL_MODULE_IMPORT_P)
(DECL_MODULE_ENTITY_P): New.
(DECL_MODULE_PENDING_SPECIALIZATIONS_P): New.
(DECL_MODULE_PENDING_MEMBERS_P): New.
(DECL_MODULE_ATTACHMENTS_P): New.
(DECL_MODULE_EXPORT_P): New.
(struct lang_decl_base): Shrink sel field. Add new
module-specific fields.
Ian Lance Taylor [Wed, 2 Dec 2020 19:06:40 +0000 (11:06 -0800)]
libbacktrace: correct buffer overflow tests
* dwarf.c (resolve_string): Use > rather than >= to check whether
string index extends past buffer.
(resolve_addr_index): Similarly for address index.
Martin Sebor [Wed, 2 Dec 2020 18:29:11 +0000 (11:29 -0700)]
Adjust test to avoid ILP32 failures after r11-5622 (PR middle-end/97373)
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/builtin-sprintf-warn-1.c: Adjust expected warnings
to correctly reflect the maximum object size.
* gcc.dg/tree-ssa/builtin-sprintf-warn-11.c: Same.
* gcc.dg/tree-ssa/builtin-sprintf-warn-18.c: Same.
Ilya Leoshkevich [Thu, 26 Nov 2020 01:16:17 +0000 (02:16 +0100)]
IBM Z: Use llihf and oilf to load large immediates into GPRs
Currently GCC loads large immediates into GPRs from the literal pool,
which is not as efficient as loading two halves with llihf and oilf.
gcc/ChangeLog:
2020-11-30 Ilya Leoshkevich <iii@linux.ibm.com>
* config/s390/s390-protos.h (s390_const_int_pool_entry_p): New
function.
* config/s390/s390.c (s390_const_int_pool_entry_p): New
function.
* config/s390/s390.md: Add define_peephole2 that produces llihf
and oilf.
gcc/testsuite/ChangeLog:
2020-11-30 Ilya Leoshkevich <iii@linux.ibm.com>
* gcc.target/s390/load-imm64-1.c: New test.
* gcc.target/s390/load-imm64-2.c: New test.
Simon Marchi [Wed, 2 Dec 2020 18:04:01 +0000 (11:04 -0700)]
Sync .gitignore with binutils-gdb
* .gitignore: Sync with binutils-gdb
Ian Lance Taylor [Wed, 2 Dec 2020 17:42:49 +0000 (09:42 -0800)]
Go testsuite: update semi6.go from source repo
This should have been part of
c7932d5626a81a35686a3992b5a02570aba5cd0b,
but I forgot.
Jonathan Wakely [Wed, 2 Dec 2020 16:37:56 +0000 (16:37 +0000)]
libstdc++: Use libatomic for tests on all 32-bit powerpc targets
In addition to the existing powerpc targets, powerpc64 needs libatomic
for 64-bit atomics when testing the 32-bit multilib with -m32. Adjust
the existing target checks to match all 32-bit powerpc targets, but not
64-bit ones.
libstdc++-v3/ChangeLog:
* testsuite/lib/dg-options.exp (add_options_for_libatomic):
Replace powerpc-ibm-aix* and powerpc*-*-darwin* with check for
powerpc && ilp32.
Nathan Sidwell [Wed, 2 Dec 2020 16:27:53 +0000 (08:27 -0800)]
c++: RTTI accessors for modules
The module machinery needs to serialize tinfo types and vars by
meaning, not literally. This adds the necessary pieces to rtti.
gcc/cp/
* cp-tree.h (DECL_TINFO_P): Also for TYPE_DECLs.
(get_tinfo_decl_direct): Declare.
(get_pseudo_tinfo_index, get_pseudo_tinfo_type): Declare.
* rtti.c (get_tinfo_decl_direct): Externalize.
(get_tinfo_desc): Set DECL_TINFO_P on the typedef.
(get_pseudo_tinfo_index, get_pseudo_tinfo_type): New.
Ian Lance Taylor [Fri, 27 Nov 2020 04:13:16 +0000 (20:13 -0800)]
compiler: reword "declared and not used" error message
This is a gofrontend copy of https://golang.org/cl/203282.
From the CL 203282 description:
"declared and not used" is technically correct, but might confuse
the user. Switching "and" to "but" will hopefully create the
contrast for the users: they did one thing (declaration), but
not the other --- actually using the variable.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273629
Ian Lance Taylor [Fri, 27 Nov 2020 04:03:57 +0000 (20:03 -0800)]
compiler: improve mixed named/unnamed parameter error message
Use the same error as the current gc compiler.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273628
Ian Lance Taylor [Wed, 2 Dec 2020 03:15:57 +0000 (19:15 -0800)]
compiler: don't advance past unexpected semicolon
We've already read the unexpected semicolon, so advancing again causes
us to skip the next token, causing future errors to be out of sync.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/274439
Eric Botcazou [Wed, 2 Dec 2020 15:40:32 +0000 (16:40 +0100)]
Upgrade ACATS testsuite to latest ACATS 2.6
This upgrades the ACATS tesuite present in ada/acats from 2.5 to latest 2.6,
removing 3 tests and adding 11 tests, some of them written very recently.
gcc/testsuite/ChangeLog:
* ada/acats/support/acats25.lst: Delete.
* ada/acats/support/acats26.lst: New file.
* ada/acats/support/fcndecl.ada: Minor tweak.
* ada/acats/support/impdef.a: Add commentary.
* ada/acats/support/impdefg.a (Negative_Zero return): Simplify.
* ada/acats/support/macro.dfs (TASK_STORAGE_SIZE): Bump.
* ada/acats/support/repbody.ada: Upgrade to ACATS 2.6.
* ada/acats/support/tctouch.ada: Likewise.
* ada/acats/tests/c3/c352001.a: New file.
* ada/acats/tests/c4/c433001.a: Correct error messages.
* ada/acats/tests/c4/c453001.a: New file.
* ada/acats/tests/c4/c45622a.ada: Delete.
* ada/acats/tests/c4/c45624a.ada: Likewise.
* ada/acats/tests/c4/c45624b.ada: Likewise.
* ada/acats/tests/c4/c460013.a: New file.
* ada/acats/tests/c4/c460014.a: Likewise.
* ada/acats/tests/c6/c620001.a: Likewise.
* ada/acats/tests/c6/c620002.a: Likewise.
* ada/acats/tests/c7/c761006.a: Redo Unchecked_Deallocation case.
* ada/acats/tests/c9/c96004a.ada: Adjust for Ada 2005.
* ada/acats/tests/c9/c96007a.ada: Likewise.
* ada/acats/tests/cb/cb41004.a: Adjust for AI95-0044.
* ada/acats/tests/cc/cc3016f.ada: Minor tweak.
* ada/acats/tests/cd/cd30011.a: New file.
* ada/acats/tests/cd/cd30012.a: Likewise.
* ada/acats/tests/cd/cd90001.a: Fix comparison.
* ada/acats/tests/cxa/cxa3004.a: New file.
* ada/acats/tests/cxa/cxa5013.a: Likewise.
* ada/acats/tests/cxa/cxac005.a: Adjust for return-by-reference.
* ada/acats/tests/cxb/cxb30061.am: New file.
* ada/acats/tests/cxf/cxf2001.a: Fix failure message.
Nathan Sidwell [Wed, 2 Dec 2020 15:40:49 +0000 (07:40 -0800)]
c++: Add lang_decl, type_decl API
We need to call the lang_decl and type_decl creators from the module
loading machinery. This makes them reachable.
gcc/cp/
* cp-tree.h (maybe_add_lang_decl_raw, maybe_add_lang_type_raw):
Declare.
* lex.c (maybe_add_lang_decl_raw, maybe_add_lang_type_raw):
Externalize, reformat.
Nathan Sidwell [Wed, 2 Dec 2020 15:35:23 +0000 (07:35 -0800)]
c++: Extend build_array_type API
The modules machinery needs to construct array types, and that wanted
to determine type dependency. That doesn't work during loading, but
the module loader can stream that fact too and tell the array builder.
Thus this extends the API to allow a caller to specify the dependency
explicitly. The call in cp_build_qualified_type_real is unreachable
during the loading, so that one's ok as is.
gcc/cp/
* cp-tree.h (build_cplus_array_type): Add defaulted DEP parm.
* tree.c (set_array_type_common): Add DEP parm.
(build_cplus_array_type): Add DEP parm, determine dependency if
needed.
(cp_build_qualified_type_real): Adjust array-building call.
(strip_typedefs): Likewise.
Nathan Sidwell [Wed, 2 Dec 2020 15:28:30 +0000 (07:28 -0800)]
c++: Fix bootstrap
I made the prefix for dumping a binding-vector slightly too small.
Fixed thusly.
gcc/cp/
* ptree.c (cxx_print_xnode): Increase binding-vector prefix size.
Richard Biener [Wed, 2 Dec 2020 13:43:59 +0000 (14:43 +0100)]
tree-optimization/97630 - fix SLP cycle memory leak
This fixes SLP cycles leaking memory by maintaining a double-linked
list of allocatd SLP nodes we can zap when we free the alloc pool.
2020-12-02 Richard Biener <rguenther@suse.de>
PR tree-optimization/97630
* tree-vectorizer.h (_slp_tree::next_node,
_slp_tree::prev_node): New.
(vect_slp_init): Declare.
(vect_slp_fini): Likewise.
* tree-vectorizer.c (vectorize_loops): Call vect_slp_init/fini.
(pass_slp_vectorize::execute): Likewise.
* tree-vect-slp.c (vect_slp_init): New.
(vect_slp_fini): Likewise.
(slp_first_node): New global.
(_slp_tree::_slp_tree): Link node into the SLP tree list.
(_slp_tree::~_slp_tree): Delink node from the SLP tree list.
Scott Snyder [Wed, 2 Dec 2020 14:42:56 +0000 (15:42 +0100)]
vec.h: Fix GCC build with -std=gnu++20 [PR98059]
Apparently vec.h doesn't build with -std=c++20/gnu++20, since the
DR2237 r11-532 change.
template <typename T>
class auto_delete_vec
{
private:
auto_vec_delete<T> (const auto_delete_vec<T> &) = delete;
};
which vec.h uses is invalid C++20, one needs to use
auto_vec_delete (const auto_delete_vec &) = delete;
instead which is valid all the way back to C++11 (and without = delete
to C++98).
2020-12-02 Scott Snyder <sss@li-snyder.org>
PR plugins/98059
* vec.h (auto_delete_vec): Use
DISABLE_COPY_AND_ASSIGN(auto_delete_vec) instead of
DISABLE_COPY_AND_ASSIGN(auto_delete_vec<T>) to make it valid C++20
after DR2237.
Nathan Sidwell [Wed, 2 Dec 2020 13:52:14 +0000 (05:52 -0800)]
C++ Module Binding Vector
This adds the vector necessary to hold different module's namespace
bindings. We add a new tree-node 'tree_binding_vec', which contains a
sparse array, indexed by module number. To avoid space wasting, this
is allocated in clusters using 'unsigned short' as the index value (so
that's one of the upper bounds on module importing). If there are
only bindings from the current TU, there is no vector, so we have the
same representation as a non-module compilation.
To support lazy loading, a binding slot can contain either a tree (the
binding), or a cookie that the module machinery uses to load the
required binding on demand.
The first 2 or 3 slots end up being reserved for fixed meanings.
There are a couple of flags we have to record on a binding, to know
whether the same declaration could appear in two different slots.
gcc/cp/
* cp-tree.def (BINDING_VECTOR): New.
* name-lookup.h (struct binding_slot): New.
(BINDING_VECTOR_SLOTS_PER_CLUSTER): New.
(struct binding_index, struct binding_cluster): New.
(BINDING_VECTOR_ALLOC_CLUSTERS, BINDING_VECTOR_CLUSTER_BASE)
(BINDING_VECTOR_CLUSTER): New.
(struct tree_binding_vec): New.
(BINDING_VECTOR_NAME, BINDING_VECTOR_GLOBAL_DUPS_P)
(BINDING_VECTOR_PARTITION_DUPS_P): New.
(BINDING_BINDING_GLOBAL_P, BINDING_BINDING_PARTITION_P): New.
(BINDING_VECTOR_PENDING_SPECIALIZATIONS)
(BINDING_VECTOR_PENDING_IS_HEADER_P)
(BINDING_VECTOR_PENDING_IS_PARTITION_P): New.
* cp-tree.h (enum cp_tree_node_structure_enum): Add
TS_CP_BINDING_VECTOR.
(union lang_tree_node): Add binding_vec field.
(make_binding_vec): Declare.
(named_decl_hash::hash, named_decl_hash::equal): Check for binding
vector.
* decl.c (cp_tree_node_structure): Add BINDING_VECTOR case.
* ptree.c (cxx_print_xnode): Add BINDING_VECTOR case.
* tree.c (make_binding_vec): New.
Claudiu Zissulescu [Wed, 2 Dec 2020 14:09:21 +0000 (16:09 +0200)]
MAINTAINERS: Add myself as arc port maintainer
2020-12-02 Claudiu Zissulescu <claziss@gmail.com>
* MAINTAINERS: Add myself as arc port maintainer.
Martin Liska [Wed, 2 Dec 2020 12:01:47 +0000 (13:01 +0100)]
ipa: do not DECL_IS_MALLOC for void fns
gcc/ChangeLog:
PR ipa/98075
* cgraph.c (cgraph_node::dump): Dump decl_is_malloc flag.
* ipa-pure-const.c (propagate_malloc): Do not set malloc
attribute for void functions.
gcc/testsuite/ChangeLog:
PR ipa/98075
* g++.dg/ipa/pr98075.C: New test.
H.J. Lu [Wed, 2 Dec 2020 13:32:37 +0000 (05:32 -0800)]
Use the section flag 'o' for __patchable_function_entries
This commit in GNU binutils 2.35:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=
b7d072167715829eed0622616f6ae0182900de3e
added the section flag 'o' to .section directive:
.section __patchable_function_entries,"awo",@progbits,foo
which specifies the symbol name which the section references. Assembler
creates a unique __patchable_function_entries section with the section,
where foo is defined, as its linked-to section. Linker keeps a section
if its linked-to section is kept during garbage collection.
This patch checks assembler support for the section flag 'o' and uses
it to implement __patchable_function_entries section. Since Solaris may
use GNU assembler with Solairs ld. Even if GNU assembler supports the
section flag 'o', it doesn't mean that Solairs ld supports it. This
feature is disabled for Solairs targets.
gcc/
PR middle-end/93195
PR middle-end/93197
* configure.ac (HAVE_GAS_SECTION_LINK_ORDER): New. Define 1 if
the assembler supports the section flag 'o' for specifying
section with link-order.
* output.h (SECTION_LINK_ORDER): New. Defined to 0x8000000.
(SECTION_MACH_DEP): Changed from 0x8000000 to 0x10000000.
* targhooks.c (default_print_patchable_function_entry): Pass
SECTION_LINK_ORDER to switch_to_section if the section flag 'o'
works. Pass current_function_decl to switch_to_section.
* varasm.c (default_elf_asm_named_section): Use 'o' flag for
SECTION_LINK_ORDER if assembler supports it.
* config.in: Regenerated.
* configure: Likewise.
* doc/sourcebuild.texi: Document o_flag_in_section.
gcc/testsuite/
PR middle-end/93195
* g++.dg/pr93195a.C: New test.
* g++.dg/pr93195b.C: Likewise.
* lib/target-supports.exp
(check_effective_target_o_flag_in_section): New proc.
H.J. Lu [Wed, 2 Dec 2020 13:16:12 +0000 (05:16 -0800)]
x86: Add the missing '.' for -mneeded
* config/i386/i386.opt: Add the missing '.' for -mneeded.
Jonathan Wakely [Wed, 2 Dec 2020 12:34:20 +0000 (12:34 +0000)]
libstdc++: Use longer timeout for istream::gcount() overflow tests
On targets with 32-bit poitners these tests do extra work, so give them
longer to run.
libstdc++-v3/ChangeLog:
* testsuite/27_io/basic_istream/ignore/char/94749.cc: Add
dg-timeout-factor for ilp32 targets.
* testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc:
Likewise.
Jonathan Wakely [Wed, 2 Dec 2020 12:29:00 +0000 (12:29 +0000)]
libstdc++: Fix null pointer dereferences in __gnu_cxx::rope
This fixes UBsan errors like:
/usr/include/c++/10/ext/ropeimpl.h:593:9: runtime error: member access within null pointer of type 'struct _RopeRep'
/usr/include/c++/10/ext/ropeimpl.h:593:9: runtime error: member call on null pointer of type 'struct _Rope_rep_base'
/usr/include/c++/10/ext/rope:556:17: runtime error: reference binding to null pointer of type 'struct allocator_type'
/usr/include/c++/10/ext/ropeimpl.h:593:9: runtime error: reference binding to null pointer of type 'struct allocator_type'
/usr/include/c++/10/ext/rope:1700:30: runtime error: member call on null pointer of type 'struct new_allocator'
/usr/include/c++/10/ext/new_allocator.h:105:29: runtime error: member call on null pointer of type 'struct new_allocator'
/usr/include/c++/10/ext/rope:1702:26: runtime error: reference binding to null pointer of type 'const struct allocator'
/usr/include/c++/10/bits/allocator.h:148:34: runtime error: reference binding to null pointer of type 'const struct new_allocator'
/usr/include/c++/10/ext/rope:1664:39: runtime error: reference binding to null pointer of type 'const struct allocator'
/usr/include/c++/10/ext/rope:1665:9: runtime error: reference binding to null pointer of type 'const struct allocator_type'
/usr/include/c++/10/ext/rope:725:36: runtime error: reference binding to null pointer of type 'const struct allocator_type'
/usr/include/c++/10/ext/rope:614:64: runtime error: reference binding to null pointer of type 'const struct allocator_type'
The problem is calling r->_M_get_allocator() when r is null.
libstdc++-v3/ChangeLog:
* include/ext/rope (rope::_S_concat_char_iter)
(rope::_S_destr_concat_char_iter): Add allocator parameter.
(rope::push_back, rope::append, rope::insert, operator+):
Pass allocator.
* include/ext/ropeimpl.h (rope::_S_concat_char_iter)
(rope::_S_destr_concat_char_iter): Add allocator parameter
and use it.
(_Rope_char_ref_proxy::operator=(_CharT)): Pass allocator.
Jonathan Wakely [Wed, 2 Dec 2020 11:25:42 +0000 (11:25 +0000)]
libstdc++: Fix indentation in rope
libstdc++-v3/ChangeLog:
* include/ext/rope: Fix indentation of access specifiers.
Martin Liska [Wed, 2 Dec 2020 12:08:56 +0000 (13:08 +0100)]
Add new test-case.
gcc/testsuite/ChangeLog:
PR tree-optimization/98084
* gcc.dg/tree-ssa/pr98094.c: New test.
Richard Biener [Wed, 2 Dec 2020 10:07:43 +0000 (11:07 +0100)]
guard maybe_set_vectorized_backedge_value calls
This makes sure to not call maybe_set_vectorized_backedge_value when
we did not vectorize the latch def candidate.
2020-12-02 Richard Biener <rguenther@suse.de>
* tree-vect-loop.c (vect_transform_loop_stmt): Return whether
we vectorized a stmt.
(vect_transform_loop): Only call maybe_set_vectorized_backedge_value
when we vectorized the stmt.
Jakub Jelinek [Wed, 2 Dec 2020 10:33:33 +0000 (11:33 +0100)]
expansion: Fix up infinite recursion due to double-word modulo optimization
Jeff has reported that my earlier patch broke rl78-elf, e.g. with
unsigned short foo (unsigned short x) { return x % 7; }
when compiled with -O2 -mg14. The problem is that rl78 is a BITS_PER_WORD
== 8 target which doesn't have 8-bit modulo or divmod optab, but has instead
16-bit divmod, so my patch attempted to optimize it, then called
expand_divmod to do 8-bit modulo and that in turn tried to do 16-bit modulo
again.
The following patch fixes it in two ways.
One is to not perform the optimization when we have {u,s}divmod_optab
handler for the double-word mode, in that case it is IMHO better to just
do whatever we used to do before. This alone should fix the infinite
recursion. But I'd be afraid some other target might have similar problem
and might not have a divmod pattern, but only say a library call.
So the patch also introduces a methods argument to expand_divmod such that
normally we allow everything that was allowed before (using libcalls and
widening), but when called from these expand_doubleword*mod routines we
restrict it to no widening and no libcalls.
2020-12-02 Jakub Jelinek <jakub@redhat.com>
* expmed.h (expand_divmod): Only declare if GCC_OPTABS_H is defined.
Add enum optabs_method argument defaulted to OPTAB_LIB_WIDEN.
* expmed.c: Include expmed.h after optabs.h.
(expand_divmod): Add methods argument, if it is not OPTAB_{,LIB_}WIDEN,
don't choose a wider mode, and pass it to other calls instead of
hardcoded OPTAB_LIB_WIDEN. Avoid emitting libcalls if not
OPTAB_LIB or OPTAB_LIB_WIDEN.
* optabs.c: Include expmed.h after optabs.h.
(expand_doubleword_mod, expand_doubleword_divmod): Pass OPTAB_DIRECT
as last argument to expand_divmod.
(expand_binop): Punt if {s,u}divmod_optab has handler for double-word
int_mode.
* expr.c: Include expmed.h after optabs.h.
* explow.c: Include expmed.h after optabs.h.
Jakub Jelinek [Wed, 2 Dec 2020 10:32:19 +0000 (11:32 +0100)]
expansion: Further improve double-word modulo, division and divmod [PR97459]
The following patch implements what Thomas wrote about, in particular
that we can handle also double-word divison by the constants for which
the earlier patch optimized modulo (if it would be otherwise a library
call) and that we can also easily handle such constants shifted to the left.
Unfortunately, seems CSE isn't able to optimize away the two almost
identical sequences (one to compute remainder, one to compute quotient),
probably because of the ADD_OVERFLOW introduced jumps, so the patch also
adjusts expand_DIVMOD.
2020-12-02 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/97459
* optabs.h (expand_doubleword_divmod): Declare.
* optabs.c (expand_doubleword_divmod): New function.
(expand_binop): Use it.
* internal-fn.c (expand_DIVMOD): Likewise.
* gcc.target/i386/pr97282.c (foo): Use 123456 divisor instead of
10.
* gcc.dg/pr97459-1.c (TESTS): Add tests for 10, 12 and
6144.
* gcc.dg/pr97459-2.c (TESTS): Likewise.
* gcc.dg/pr97459-3.c: New test.
* gcc.dg/pr97459-4.c: New test.
* gcc.dg/pr97459-5.c: New test.
* gcc.dg/pr97459-6.c: New test.
Martin Liska [Wed, 2 Dec 2020 08:44:40 +0000 (09:44 +0100)]
Fix __builtin_clear_padding for empty struct.
gcc/ChangeLog:
PR c/98087
* gimple-fold.c (clear_padding_type): Do not divide by zero.
gcc/testsuite/ChangeLog:
PR c/98087
* gcc.c-torture/compile/pr98087.c: New test.
Martin Liska [Wed, 2 Dec 2020 09:19:19 +0000 (10:19 +0100)]
GDB hooks: improve documentation
gcc/ChangeLog:
* gdbinit.in: Write what each command calls
for a debugging function.
Kewen Lin [Wed, 2 Dec 2020 07:55:34 +0000 (01:55 -0600)]
rs6000: Disable HTM for Power10 and later by default
Power ISA 3.1 has dropped transactional memory support, this patch
is to disable HTM feature for power10 and later by default.
Bootstrapped/regtested on powerpc64le-linux-gnu P8 and P10.
gcc/ChangeLog:
* config/rs6000/rs6000.c (rs6000_option_override_internal):
Use OPTION_MASK_DIRECT_MOVE for Power8 target_enable instead
of OPTION_MASK_HTM.
* config/rs6000/rs6000-cpus.def (ISA_2_7_MASKS_SERVER):
Remove OPTION_MASK_HTM.
(RS6000_CPU): Add OPTION_MASK_HTM to power8, power9 and
powerpc64le entries.
Uros Bizjak [Wed, 2 Dec 2020 07:15:03 +0000 (08:15 +0100)]
i386: Fix abs an maxmin expanders for TARGET_PARTIAL_REG_STALL [PR98079].
QImode shold be enabled only for !TARGET_PARTIAL_REG_STALL
2020-12-02 Uroš Bizjak <ubizjak@gmail.com>
PR target/98079
gcc/
* config/i386/i386.md (abs<mode>2): Enable QImode
only for !TARGET_PARTIAL_REG_STALL.
(*abs<mode>2_1): Ditto.
(<maxmin:code><mode>3): Ditto.
(*<maxmin:code><mode>3_1): Ditto.
gcc/testsuite/
* gcc.target/i386/pr98079.c: New test.
Martin Liska [Tue, 1 Dec 2020 16:33:35 +0000 (17:33 +0100)]
diagnostics: ignore -fmax-errors for ICE
Right now I see:
./xgcc -B. ~/Programming/testcases/json.i -c -O2 -fmax-errors=1
/home/marxin/Programming/testcases/json.i: In function ‘json_variant_type’:
/home/marxin/Programming/testcases/json.i:22:1: error: non-integral type switch statement
22 | }
| ^
int *
switch (v_2(D)) <default: <L16> [INV], case 0B: <L11> [INV], case 5B: <L12> [INV], case 6B: <L13> [INV], case 7B: <L14> [INV], case 8B: <L15> [INV]>
compilation terminated due to -fmax-errors=1.
with the patch I get:
./xgcc -B. ~/Programming/testcases/json.i -c -O2 -fmax-errors=1 -c
/home/marxin/Programming/testcases/json.i: In function ‘json_variant_type’:
/home/marxin/Programming/testcases/json.i:22:1: error: non-integral type switch statement
22 | }
| ^
int *
switch (v_2(D)) <default: <L16> [INV], case 0B: <L11> [INV], case 5B: <L12> [INV], case 6B: <L13> [INV], case 7B: <L14> [INV], case 8B: <L15> [INV]>
during GIMPLE pass: iftoswitch
/home/marxin/Programming/testcases/json.i:22:1: internal compiler error: verify_gimple failed
0xe4478c verify_gimple_in_cfg(function*, bool)
/home/marxin/Programming/gcc/gcc/tree-cfg.c:5467
0xd201cf execute_function_todo
/home/marxin/Programming/gcc/gcc/passes.c:2042
0xd2101c do_per_function
/home/marxin/Programming/gcc/gcc/passes.c:1687
0xd2101c execute_todo
/home/marxin/Programming/gcc/gcc/passes.c:2096
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
gcc/ChangeLog:
* diagnostic.c (diagnostic_report_diagnostic): ICE causes to
terminate compiler immediately, so I guess it should be printed
always.
Martin Liska [Tue, 1 Dec 2020 11:18:46 +0000 (12:18 +0100)]
if-to-switch: Support chain with 2 BBs.
As seen in the test-case, even 2 BBs can handle interesting
cases covered by a jump table or a bit-test.
gcc/ChangeLog:
PR tree-optimization/88702
* gimple-if-to-switch.cc (pass_if_to_switch::execute):
Require at least 2 BBs.
* gimple-if-to-switch.cc (find_conditions): Require
equal precision for low and high of a range.
gcc/testsuite/ChangeLog:
PR tree-optimization/88702
* gcc.dg/tree-ssa/if-to-switch-9.c: New test.
Martin Liska [Tue, 1 Dec 2020 16:25:36 +0000 (17:25 +0100)]
if-to-switch: consider only integral types
gcc/ChangeLog:
PR tree-optimization/98084
* gimple-if-to-switch.cc (find_conditions): Consider only
integral types.
gcc/testsuite/ChangeLog:
PR tree-optimization/98084
* gcc.dg/tree-ssa/pr98084.c: New test.
Jeff Law [Wed, 2 Dec 2020 04:48:10 +0000 (21:48 -0700)]
Use add/sub/neg insns to eliminate compare/test insns on H8
gcc/
* config/h8300/addsub.md (addqi3_clobber_flags): Rename to
addqi3_flags and annotate with a <cczn> for define_subst.
(addhi3_h8sx_clobber_flags): Likewise.
(subqi3_clobber_flags, sub<mode>3_clobber_flags): Likewise.
(neg<mode2>_clobber_flags): Similarly.
(addsi3_clobber_flags): Similarly. Update last argument to
output_plussi to distinguish when we need flags or do not need
flags.
(addhi3_clobber_flags): Similarly. Twiddle code for cases
+-1, +-2 and +-4.
* config/h8300/h8300.md: Define iterators, mode attributes and
substitutions for use in compare/test elimination.
* config/h8300/jumpcall.md (branch, branch_1): Use H8cc mode
iterator to cover the different modes for the CC register.
(branch_1_false): Likewise.
gcc/testsuite
* gcc.target/h8300/add.c: New test.
* gcc.target/h8300/add-2.c: New test.
* gcc.target/h8300/add-3.c: New test.
* gcc.target/h8300/sub.c: New test.
* gcc.target/h8300/sub-2.c: New test.
* gcc.target/h8300/sub-3.c: New test.
Maciej W. Rozycki [Wed, 2 Dec 2020 04:28:26 +0000 (04:28 +0000)]
loop-iv: Fix typo in `iv_analyze_expr' description
gcc/
* loop-iv.c: Fix a typo, s/bu/by/, in the `iv_analyze_expr'
description in the introduction.
Ian Lance Taylor [Wed, 2 Dec 2020 02:18:34 +0000 (18:18 -0800)]
go-test.exp: permit trailing */ on ERROR line
* go.test/go-test.exp (errchk): Permit trailing */ on ERROR line.
H.J. Lu [Mon, 3 Feb 2020 19:55:43 +0000 (11:55 -0800)]
Use SHF_GNU_RETAIN to preserve symbol definitions
In assemly code, the section flag 'R' sets the SHF_GNU_RETAIN flag to
indicate that the section must be preserved by the linker.
Add SECTION_RETAIN to indicate a section should be retained by the linker
and set SECTION_RETAIN on section for the preserved symbol if assembler
supports SHF_GNU_RETAIN. All retained symbols are placed in separate
sections with
.section .data.rel.local.preserved_symbol,"awR"
preserved_symbol:
...
.section .data.rel.local,"aw"
not_preserved_symbol:
...
to avoid
.section .data.rel.local,"awR"
preserved_symbol:
...
not_preserved_symbol:
...
which places not_preserved_symbol definition in the SHF_GNU_RETAIN
section.
gcc/
2020-12-01 H.J. Lu <hjl.tools@gmail.com>
* configure.ac (HAVE_GAS_SHF_GNU_RETAIN): New. Define 1 if
the assembler supports marking sections with SHF_GNU_RETAIN flag.
* output.h (SECTION_RETAIN): New. Defined as 0x4000000.
(SECTION_MACH_DEP): Changed from 0x4000000 to 0x8000000.
(default_unique_section): Add a bool argument.
* varasm.c (get_section): Set SECTION_RETAIN for the preserved
symbol with HAVE_GAS_SHF_GNU_RETAIN.
(resolve_unique_section): Used named section for the preserved
symbol if assembler supports SHF_GNU_RETAIN.
(get_variable_section): Handle the preserved common symbol with
HAVE_GAS_SHF_GNU_RETAIN.
(default_elf_asm_named_section): Require the full declaration and
use the 'R' flag for SECTION_RETAIN.
* config.in: Regenerated.
* configure: Likewise.
* doc/sourcebuild.texi: Document R_flag_in_section.
gcc/testsuite/
2020-12-01 H.J. Lu <hjl.tools@gmail.com>
Jozef Lawrynowicz <jozef.l@mittosystems.com>
* c-c++-common/attr-used.c: Check the 'R' flag.
* c-c++-common/attr-used-2.c: Likewise.
* c-c++-common/attr-used-3.c: New test.
* c-c++-common/attr-used-4.c: Likewise.
* gcc.c-torture/compile/attr-used-retain-1.c: Likewise.
* gcc.c-torture/compile/attr-used-retain-2.c: Likewise.
* lib/target-supports.exp
(check_effective_target_R_flag_in_section): New proc.
Jonathan Wakely [Wed, 2 Dec 2020 00:39:22 +0000 (00:39 +0000)]
libstdc++: Make preprocessor checks for __cpp_lib_atomic_wait consistent
This changes some #ifdef checks to use #if instead.
libstdc++-v3/ChangeLog:
* include/bits/atomic_timed_wait.h: Use #if instead of #ifdef.
* include/bits/semaphore_base.h: Likewise.
* include/std/version: Remove trailing whitespace.
Jonathan Wakely [Wed, 2 Dec 2020 00:39:21 +0000 (00:39 +0000)]
libstdc++: Fix filesystem::path pretty printer test failure
On some systems libstdc++-prettyprinters/cxx17.cc FAILs with this error:
skipping: Python Exception <type 'exceptions.AttributeError'> 'gdb.Type' object has no attribute 'name': ^M
got: $27 = filesystem::path "/dir/."^M
FAIL: libstdc++-prettyprinters/cxx17.cc print path2
The gdb.Type.name attribute isn't present in GDB 7.6, so we get an
exception from StdPathPrinter._iterator.__next__ trying to use it.
The StdPathPrinter._iterator is already passed the type's name in its
constructor, so we can just store that and use it instead of
gdb.Type.name.
libstdc++-v3/ChangeLog:
* python/libstdcxx/v6/printers.py (StdExpPathPrinter): Store the
name of the type and pass it to the iterator.
(StdPathPrinter): Likewise.
* testsuite/libstdc++-prettyprinters/filesystem-ts.cc: New test.
H.J. Lu [Mon, 9 Nov 2020 17:29:23 +0000 (09:29 -0800)]
x86: Add -mneeded for GNU_PROPERTY_X86_ISA_1_V[234] marker
GCC 11 supports -march=x86-64-v[234] to enable x86 micro-architecture ISA
levels:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97250
Binutils has been updated to support GNU_PROPERTY_X86_ISA_1_V[234] marker:
https://gitlab.com/x86-psABIs/x86-64-ABI/-/merge_requests/13
with
commit
b0ab06937385e0ae25cebf1991787d64f439bf12
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Oct 30 06:49:57 2020 -0700
x86: Support GNU_PROPERTY_X86_ISA_1_BASELINE marker
and
commit
32930e4edbc06bc6f10c435dbcc63131715df678
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Oct 9 05:05:57 2020 -0700
x86: Support GNU_PROPERTY_X86_ISA_1_V[234] marker
in x86 ELF binaries.
Add -mneeded to emit GNU_PROPERTY_X86_ISA_1_NEEDED property to indicate
the micro-architecture ISA level required to execute the binary.
gcc/
* config.gcc: Replace cet.o with gnu-property.o. Replace
i386/t-cet with i386/t-gnu-property.
* config/i386/cet.c: Renamed to ...
* config/i386/gnu-property.c: This.
(emit_gnu_property): New function.
(file_end_indicate_exec_stack_and_cet): Renamed to ...
(file_end_indicate_exec_stack_and_gnu_property): This. Call
emit_gnu_property to generate GNU_PROPERTY_X86_FEATURE_1_AND and
GNU_PROPERTY_X86_ISA_1_NEEDED properties.
* config/i386/i386.opt (mneeded): New.
* config/i386/linux-common.h (file_end_indicate_exec_stack_and_cet):
Renamed to ...
(file_end_indicate_exec_stack_and_gnu_property): This.
(TARGET_ASM_FILE_END): Updated.
* config/i386/t-cet: Renamed to ...
* config/i386/t-gnu-property: This.
(cet.o): Renamed to ...
(gnu-property.o): This.
* doc/invoke.texi: Document -mneeded.
gcc/testsuite/
* gcc.target/i386/x86-needed-1.c: New test.
* gcc.target/i386/x86-needed-2.c: Likewise.
* gcc.target/i386/x86-needed-3.c: Likewise.
GCC Administrator [Wed, 2 Dec 2020 00:16:41 +0000 (00:16 +0000)]
Daily bump.
Thomas Rodgers [Tue, 1 Dec 2020 23:41:08 +0000 (15:41 -0800)]
Add feature test macro for atomic<T>::wait
Adds __cpp_lib_atomic_wait feature test macro which was overlooked in
the initial commit of this feature. Replaces uses of
_GLIBCXX_HAVE_ATOMIC_WAIT.
libstdc++-v3/ChangeLog:
* include/bits/atomic_base.h: Replace usage of
_GLIBCXX_HAVE_ATOMIC_WAIT with __cpp_lib_atomic_wait.
* include/bits/atomic_timed_wait.h: Likewise.
* include/bits/atomic_wait.h: Define __cpp_lib_atomic_wait
feature test macro.
* include/bits/semaphore_base.h: Replace usage of
_GLIBCXX_HAVE_ATOMIC_WAIT with __cpp_lib_atomic_wait.
* include/std/atomic: Likewise.
* include/std/latch: Likewise.
* include/std/semaphore: Likewise.
* include/std/version: Define __cpp_lib_atomic wait
feature test macro and replace usage of
_GLIBCXX_HAVE_ATOMIC_WAIT.
* testsuite/29_atomics/atomic/wait_notify/1.cc: New test.
* testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
Eugene Rozenfeld [Tue, 1 Dec 2020 23:26:59 +0000 (16:26 -0700)]
Optimize max/min pattern with comparison
gcc/
PR tree-optimization/96708
* match.pd: New pattern for comparing X with MAX (X, Y)
or MIN (X, y).
gcc/testsuite
* gcc.dg/pr96708-negative.c: New test.
* gcc.dg/pr96708-positive.c: New test.
Jeff Law [Tue, 1 Dec 2020 23:23:05 +0000 (16:23 -0700)]
Fix mcore multilib specification
gcc
* config/mcore/t-mcore (MULTILIB_EXCEPTIONS): Define.
Ville Voutilainen [Tue, 1 Dec 2020 22:20:46 +0000 (00:20 +0200)]
Add pretty-printing support for __is_nothrow_{assignable,constructible}.
gcc/cp/ChangeLog:
PR c++/98054
* cxx-pretty-print.c (pp_cxx_trait_expression):
Add support for __is_nothrow_{assignable,constructible}.
Martin Sebor [Tue, 1 Dec 2020 22:10:30 +0000 (15:10 -0700)]
PR middle-end/97595 - bogus -Wstringop-overflow due to DECL_SIZE_UNIT underreporting field size
gcc/ChangeLog:
PR middle-end/97595
* tree.c (component_ref_size): Fail when DECL_SIZE != TYPE_SIZE.
* tree.h (DECL_SIZE, TYPE_SIZE): Update comment.
gcc/testsuite/ChangeLog:
PR middle-end/97595
* g++.dg/warn/Warray-bounds-14.C: New test.
* g++.dg/warn/Wstringop-overflow-6.C: New test.
Jeff Law [Tue, 1 Dec 2020 22:06:48 +0000 (15:06 -0700)]
Fix more minor testsuite fallout from improved switch optimization
gcc/testsuite
* gcc.dg/tree-ssa/pr96480.c: Disable jump table optimization
JeanHeyd Meneide [Tue, 1 Dec 2020 21:39:47 +0000 (14:39 -0700)]
Feature: Macros for identifying the wide and narrow execution string literal encoding
gcc/c-family
* c-cppbuiltin.c (c_cpp_builtins): Add predefined
{__GNUC_EXECUTION_CHARSET_NAME} and
_WIDE_EXECUTION_CHARSET_NAME} macros.
gcc/
* doc/cpp.texi: Document new macros.
gcc/testsuite/
* c-c++-common/cpp/wide-narrow-predef-macros.c: New test.
libcpp/
* charset.c (init_iconv_desc): Initialize "to" and "from" fields.
* directives.c (cpp_get_narrow_charset_name): New function.
(cpp_get_wide_charset_name): Likewise.
* include/cpplib.h (cpp_get_narrow_charset_name): Prototype.
(cpp_get_wide_charset_name): Likewise.
* internal.h (cset_converter): Add "to" and "from" fields.
Michael Weghorn [Tue, 1 Dec 2020 21:19:20 +0000 (21:19 +0000)]
libstdc++: Pretty printers for _Bit_reference and _Bit_iterator
'std::_Bit_iterator' and 'std::_Bit_const_iterator' are the iterators
used by 'std::vector<bool>'.
'std::_Bit_reference' is e.g. used in range-based for loops over
'std::vector<bool>' like
std::vector<bool> vb {true, false, false};
for (auto b : vb) {
// b is of type std::_Bit_reference here
// ...
}
Like iterators of vectors for other types, the actual value is printed.
libstdc++-v3/ChangeLog:
* python/libstdcxx/v6/printers.py (StdBitIteratorPrinter)
(StdBitReferencePrinter): Add pretty-printers for
_Bit_reference, _Bit_iterator and _Bit_const_iterator.
* testsuite/libstdc++-prettyprinters/simple.cc: Test
std::_Bit_reference, std::_Bit_iterator and
std::_Bit_const_iterator.
* testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
Jeff Law [Tue, 1 Dec 2020 21:27:38 +0000 (14:27 -0700)]
Fix compromised tests after recent switch table improvements
gcc/testsuite
* gcc.dg/pr46309-2.c: Add -fno-bit-tests and -fno-jump-tables
to avoid compromising the test.
Jakub Jelinek [Tue, 1 Dec 2020 20:41:44 +0000 (21:41 +0100)]
openmp: Avoid ICE on depend clause on depobj OpenMP construct [PR98072]
Since r11-5430 we ICE on the following testcase. When parsing the depobj
directive we don't really use cp_parser_omp_all_clauses routine which ATM
disables generation of location wrappers and the newly added assertion
that there are no location wrappers thus triggers.
Fixed by adding the location wrappers suppression sentinel.
Longer term, we should handle location wrappers inside of OpenMP clauses.
2020-12-01 Jakub Jelinek <jakub@redhat.com>
PR c++/98072
* parser.c (cp_parser_omp_depobj): Suppress location wrappers when
parsing depend clause.
* c-c++-common/gomp/depobj-2.c: New test.
Martin Sebor [Tue, 1 Dec 2020 20:38:08 +0000 (13:38 -0700)]
PR middle-end/97373 - missing warning on sprintf into allocated destination
gcc/ChangeLog:
PR middle-end/97373
* builtins.c (compute_objsize): Rename...
(compute_objsize_r): to this. Change order and types of arguments.
Use new argument. Adjust calls to self.
(access_ref::get_ref): New member function.
(pointer_query::pointer_query): New member function.
(pointer_query::get_ref): Same.
(pointer_query::put_ref): Same.
(handle_min_max_size): Change order and types of arguments.
(maybe_emit_free_warning): Add a test.
* builtins.h (class pointer_query): New class.
(compute_objsize): Declare an overload.
* gimple-ssa-sprintf.c (get_destination_size): Add argument.
(handle_printf_call): Change argument type.
* tree-ssa-strlen.c (adjust_last_stmt): Add an argument and use it.
(maybe_warn_overflow): Same.
(handle_builtin_strcpy): Same.
(maybe_diag_stxncpy_trunc): Same.
(handle_builtin_memcpy): Change argument type. Adjust calls.
(handle_builtin_strcat): Same.
(handle_builtin_memset): Same.
(handle_store): Same.
(strlen_check_and_optimize_call): Same.
(check_and_optimize_stmt): Same.
(strlen_dom_walker): Add new data members.
(strlen_dom_walker::before_dom_children): Use new member.
(printf_strlen_execute): Dump cache performance counters. Remove
objsize pass cleanup.
* tree-ssa-strlen.h (maybe_diag_stxncpy_trunc): Add argument.
(handle_printf_call): Change argument type.
gcc/testsuite/ChangeLog:
PR middle-end/97373
* gcc.dg/tree-ssa/builtin-sprintf-warn-25.c: New test.
Eric Botcazou [Tue, 1 Dec 2020 20:12:54 +0000 (21:12 +0100)]
Make -fzero-call-used-regs work on the SPARC
This contains both a generic fixlet for targets implementing the leaf
register optimization (SPARC and Xtensa) and the implementation of the
target hook TARGET_ZERO_CALL_USED_REGS which is needed to make this work
on the SPARC.
gcc/ChangeLog:
* function.c (gen_call_used_regs_seq): In a function subject to the
leaf register optimization, skip registers that are not present.
* config/sparc/sparc.c (TARGET_ZERO_CALL_USED_REGS): Define to...
(sparc_zero_call_used_regs): ...this. New function.
Martin Liska [Tue, 1 Dec 2020 20:02:15 +0000 (21:02 +0100)]
testsuite: replace .* with a better regex
gcc/testsuite/ChangeLog:
* g++.dg/tree-ssa/if-to-switch-1.C: Do not allow newlines
in .* pattern.
* gcc.dg/tree-ssa/if-to-switch-1.c: Likewise.
* gcc.dg/tree-ssa/if-to-switch-2.c: Likewise.
* gcc.dg/tree-ssa/if-to-switch-3.c: Likewise.
* gcc.dg/tree-ssa/if-to-switch-5.c: Likewise.
Iain Sandoe [Tue, 1 Dec 2020 15:34:11 +0000 (15:34 +0000)]
Darwin, D : Adjust the X spec to cater for duplicate use.
The '-X' flag is an obsolete spelling for a command to tell the
linker to 'strip local symbols'. This has been the default action
for a long time - but, as per the usual GCC approach, although the
flag is retired, we have not removed it; rather, we just delete it
in the driver self-spec.
The D language adds this flag as a front end option (to emit json)
which means that deleting it in the driver disables that function
in D.
This patch works around the duplication by removing the unused flag
in the link_spec instead of the driver self-spec.
gcc/ChangeLog:
* config/darwin.h: Remove unused 'X' specs in the link spec
rather than driver self-specs.
Martin Liska [Tue, 1 Dec 2020 19:38:40 +0000 (20:38 +0100)]
if-to-switch: Fix test-suite patterns.
gcc/testsuite/ChangeLog:
PR testsuite/98085
* g++.dg/tree-ssa/if-to-switch-1.C: Do not expect precise number
of BBs.
* gcc.dg/tree-ssa/if-to-switch-1.c: Likewise.
* gcc.dg/tree-ssa/if-to-switch-2.c: Likewise. Find better name
for the function.
* gcc.dg/tree-ssa/if-to-switch-3.c: Likewise. Find better name
for the function.
* gcc.dg/tree-ssa/if-to-switch-5.c: Likewise.
Nathan Sidwell [Tue, 1 Dec 2020 19:44:34 +0000 (11:44 -0800)]
C++ Module keywords
This adds the module keywords. These are special internal tokens
generated by the preprocessor's module-control-line token peeking
logic. Spelling them with a space means that they turn back into
regular tokens in preprocessor output (but do skew the column
numbering :()
gcc/c-family/
* c-common.c (module, import, export): New internal tokens (with
trailing space).
* c-common.h (RID__MODULE, RID__IMPORT & RID__EXPORT): Enumerate
them.
(D_CXX_MODULES, D_CXX_MODULES_FLAGS): Enable them.
* c-cppbuiltin.c (c_cpp_builtins): Feature macro.
gcc/cp/
* lex.c (init_reswords): Maybe enable module keywords.
Nathan Sidwell [Tue, 1 Dec 2020 19:39:38 +0000 (11:39 -0800)]
C++ Module parameters & timers
Here is the new parameter and instrumentation timers for modules.
gcc/
* params.opt (lazy-modules): New.
* timevar.def (TV_MODULE_IMPORT, TV_MODULE_EXPORT)
(TV_MODULE_MAPPER): New.
Nathan Sidwell [Tue, 1 Dec 2020 18:28:15 +0000 (10:28 -0800)]
C++ Module options
This adds the C++ module options, and wires them into lang-specs. The
options are not connected to any machinery. The options! They do
nothing!
gcc/c-family/
* c-opts.c (c_common_init_options): Ask for module dependencies.
(c_common_handle_option): Handle -Mmodules -Mno-modules.
* c-pch.c (c_common_valid_pch): ... does not play with C++
modules.
* c.opt (Mmodules, Mno-modules): New preprocessor dependency
options.
(fmodules-ts, fmodule-header, fmodule-implicit-inline)
(fmodule-only, fmodule-mapper, fmodule-lazy)
(fmodule-version-ignore, Winvalid-imported-macros)
(flang-info-include-translate, flang-info-include-translate-not):
New options
gcc/cp/
* lang-specs.h: Add module-related options.
Jakub Jelinek [Tue, 1 Dec 2020 15:25:06 +0000 (16:25 +0100)]
Improve double-word mod even on powerpc [PR97459]
I have noticed that while my (already committed, thanks for review)
patch works on x86, it doesn't work on powerpc*. The problem is that
we don't have lshr double-word optab (neither TImode nor for -m32 DImode),
but as expander has code for double-word shift, that doesn't really matter.
As the implementation is prepared to punt whenever something can't be
expanded with OPTAB_DIRECT and in the end also punts if any library calls
would be emitted, the optab_handler checks were just to save compile time.
On the other side, for even divisors, we know that (1 << bit) % (2 * x)
for bit > 0 will never be equal to 1, because both dividend and divisor
are even and so remainder will be even too, so we can save some compile time
by adding an early exit.
The even divisors can be handled with the approach Thomas wrote about
(perhaps generalized into divisors equal to what expand_doubleword_mod
can handle times some power of two where we can handle power of two modulo
cheaply), but that would be done in a different function...
And we could use ctz to find the power of two...
2020-12-01 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/97459
* optabs.c (expand_doubleword_mod): Punt early for even op1.
(expand_binop): Don't require lshr_optab double-word handler.
Jakub Jelinek [Tue, 1 Dec 2020 15:23:59 +0000 (16:23 +0100)]
loop-invariant: JUMP_INSNs aren't loop invariant [PR97954]
The following testcase ICEs because loop invariant motion moves asm goto
with a single output as invariant.
Normally, jumps aren't really moved, because if they are single set,
they have their SET_DEST (pc) and pc_rtx has VOIDmode on which one of the
functions find_invariant_insn calls bails out. The code already punts on
insns that can throw or trap. And for asm goto without outputs, it isn't
single set, or asm goto with two or more outputs it isn't single set either.
2020-12-01 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/97954
* loop-invariant.c (find_invariant_insn): Punt on JUMP_P insns.
* gcc.dg/pr97954.c: New test.
Iain Sandoe [Sat, 25 Aug 2018 12:58:02 +0000 (13:58 +0100)]
configury : Fix LEB128 support for non-GNU assemblers.
The current configuration test for LEB128 support in the assembler is
(a) specific to GNU assemblers and (b) only checks that the directives
are accepted, not that they give correct output.
The patch extends the asm test to cover one failure case present in
assemblers based off an older version of GAS (where a 64 bit value with
the MSB set presented to a .uleb128 directive causes a fail).
The test is now generalized such that it does not make use of any
specific test for assembler source/version, but checks that the output
is as expected. We cater for scanning the object with objdump (either
binutils or LLVM) or Darwin otool.
gcc/ChangeLog:
* configure.ac (check leb128 support): Check that assemblers both
accept the LEB128 directives and also give the expected output.
Add a test for uleb128 with the MSB set for a 64 bit value.
* configure: Regenerated.
Jonathan Wakely [Tue, 1 Dec 2020 14:14:18 +0000 (14:14 +0000)]
libstdc++: Simplify detection of built-in functions
This fixes a regression affecting the Intel compiler. Because that
compiler defines __GNUC__ to match whatever version of GCC it finds on
the host system, it might claim to be a brand new GCC despite not
actually supporting all the built-ins that the latest GCC supports. This
means the config checks for __GNUC__ don't work. Most recently this
broke when r11-3569-g73ae6eb572515ad627b575a7fbdfdd47a4368e1c switched
us from using __is_same_as to __is_same when __GNUC__ >= 11.
Because __has_builtin is supported by all of GCC, Clang, and Intel we can
use that to reliably detect whether a given built-in is supported,
instead of hardcoding anything based on __GNUC__. The big caveat is
that for versions of Clang <= 9.0.0 and for (as far as I can tell) all
released versions of Intel icc, __has_builtin only evaluates to true for
built-ins with a name starting "__builtin_". For __is_aggregate,
__is_same, and __has_unique_object_representations it's necessary to use
__is_identifier to check if it's a valid identifeir token instead.
The solution used in this patch is to define _GLIBCXX_HAS_BUILTIN and
use that instead of using __has_builtin directly. For compilers that
define __is_identifier as well as __has_builtin we use both, so that if
__has_builtin evaluates to false we try again using !__is_identifier.
libstdc++-v3/ChangeLog:
* include/bits/c++config (_GLIBCXX_HAS_BUILTIN): Define macro to
work around different implementations of __has_builtin.
(_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP)
(_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE)
(_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED)
(_GLIBCXX_HAVE_BUILTIN_IS_SAME, _GLIBCXX_HAVE_BUILTIN_LAUNDER):
Define using _GLIBCXX_HAS_BUILTIN.
Iain Sandoe [Tue, 1 Dec 2020 13:52:28 +0000 (13:52 +0000)]
Regenerate a configure script omitted in r11-5520.
Additional change for : hppa64-hpux11 build to remove source paths
from embedded path.
gcc/ChangeLog:
* configure: Regnerated.
Matthew Malcomson [Tue, 1 Dec 2020 11:40:18 +0000 (11:40 +0000)]
testsuite: Correct check_effective_target_hwaddress_exec
This test should ensure that we can compile with hwasan, that such a compiled
binary runs as expected, *and* that we're running on a kernel which implements
the capability to ignore the top bytes of pointers in syscalls.
It was expected that a basic test of `int main(void) { return 0; }` would check
this, since there is a check called during `__hwasan_init` in libhwasan to
ensure that the kernel we're running on provides a `prctl` to request the
relaxed ABI.
Unfortunately, the check in libhwasan has a bug in it, and does not correctly
fail when the kernel feature is not around. This means that check is not
automatically provided by the runtime.
The sanitizer runtime will be fixed but would like to install this fix here in
case fixing the library is not quick enough for the release (and so that people
running the testsuite do not see spurious errors in the meantime).
Tested by running testsuite on an AArch64 machine with and without the required
kernel.
Observed that the test does indeed fail when the kernel feature is unavailable
and pass when the feature is available.
Note that this test is directly targetting AArch64 by using `prctl` numbers
specific to it. That's unfortunate, but once the runtime fix has gone in we
will be able to remove that requirement.
Ok for trunk?
gcc/testsuite/ChangeLog:
* lib/hwasan-dg.exp (check_effective_target_hwaddress_exec): Fix
check for correct kernel version.
Iain Sandoe [Fri, 27 Nov 2020 23:02:45 +0000 (23:02 +0000)]
C++ : Adjust warning for misplaced attributes.
This removes the reference to Objective-C++ for the warning that
attributes may not be placed before linkage specifications. It also
adds a note that they may be placed after that.
gcc/cp/ChangeLog:
* parser.c (cp_parser_declaration): Add a not about where
attributes may be placed.
Ilya Leoshkevich [Tue, 24 Nov 2020 22:45:59 +0000 (23:45 +0100)]
Introduce can_vec_cmp_compare_p
This is the same as
dcd2ca63ec5c ("Introduce can_vcond_compare_p
function"), but for vec_cmp. The reason it's needed is that since
5d9ade39b872 ("IBM Z: Fix PR97326: Enable fp compares in vec_cmp")
and
4acba4859013 ("IBM Z: Restrict vec_cmp<m><n> on z13") s390's vec_cmp
expander advertises that it supports floating point comparisons except
signaling ones on z13, but the common code ignores the latter
restriction.
gcc/ChangeLog:
2020-11-25 Ilya Leoshkevich <iii@linux.ibm.com>
* optabs-tree.c (vec_cmp_icode_p): New function.
(vec_cmp_eq_icode_p): New function.
(expand_vec_cmp_expr_p): Use vec_cmp_icode_p and
vec_cmp_eq_icode_p.
(vcond_icode_p): Use get_rtx_code_1, just to be uniform with
vec_cmp_icode_p.
* optabs.c (unsigned_optab_p): New function.
(insn_predicate_matches_p): New function.
(can_vec_cmp_compare_p): New function.
(can_vcond_compare_p): Use unsigned_optab_p and
insn_predicate_matches_p.
(get_rtx_code): Use get_rtx_code_1.
(get_rtx_code_1): Version of get_rtx_code that returns UNKNOWN
instead of asserting.
* optabs.h (can_vec_cmp_compare_p): New function.
(get_rtx_code_1): New function.
Jonathan Wakely [Tue, 1 Dec 2020 10:51:25 +0000 (10:51 +0000)]
libstdc++: Use longer timeout for slow running tests
libstdc++-v3/ChangeLog:
* testsuite/27_io/basic_istream/get/char/lwg3464.cc: Add
dg-timeout-factor directive.
* testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc:
Likewise.
Martin Liska [Fri, 28 Aug 2020 08:26:13 +0000 (10:26 +0200)]
Add if-chain to switch conversion pass.
gcc/ChangeLog:
PR tree-optimization/14799
PR ipa/88702
* Makefile.in: Add gimple-if-to-switch.o.
* dbgcnt.def (DEBUG_COUNTER): Add new debug counter.
* passes.def: Include new pass_if_to_switch pass.
* timevar.def (TV_TREE_IF_TO_SWITCH): New timevar.
* tree-pass.h (make_pass_if_to_switch): New.
* tree-ssa-reassoc.c (struct operand_entry): Move to the header.
(dump_range_entry): Move to header file.
(debug_range_entry): Likewise.
(no_side_effect_bb): Make it global.
* tree-switch-conversion.h (simple_cluster::simple_cluster):
Add inline for couple of functions in order to prevent error
about multiple defined symbols.
* gimple-if-to-switch.cc: New file.
* tree-ssa-reassoc.h: New file.
gcc/testsuite/ChangeLog:
PR tree-optimization/14799
PR ipa/88702
* gcc.dg/tree-ssa/pr96480.c: Disable if-to-switch conversion.
* gcc.dg/tree-ssa/reassoc-32.c: Likewise.
* g++.dg/tree-ssa/if-to-switch-1.C: New test.
* gcc.dg/tree-ssa/if-to-switch-1.c: New test.
* gcc.dg/tree-ssa/if-to-switch-2.c: New test.
* gcc.dg/tree-ssa/if-to-switch-3.c: New test.
* gcc.dg/tree-ssa/if-to-switch-4.c: New test.
* gcc.dg/tree-ssa/if-to-switch-5.c: New test.
* gcc.dg/tree-ssa/if-to-switch-6.c: New test.
* gcc.dg/tree-ssa/if-to-switch-7.c: New test.
* gcc.dg/tree-ssa/if-to-switch-8.c: New test.
Jonathan Wakely [Tue, 1 Dec 2020 10:36:09 +0000 (10:36 +0000)]
libstdc++: Link test with libatomic if needed [PR 98003]
libstdc++-v3/ChangeLog:
PR libstdc++/98003
* testsuite/27_io/basic_syncbuf/sync_ops/1.cc: Add options for
libatomic.
Marius Hillenbrand [Tue, 1 Dec 2020 10:05:42 +0000 (11:05 +0100)]
gcc/testsuite/s390: Add test cases for float_t
Add two test cases that check for acceptable combinations of float_t and
FLT_EVAL_METHOD on s390x.
Tested against an as-is glibc and one modified so that it derives
float_t from FLT_EVAL_METHOD.
gcc/testsuite/ChangeLog:
2020-12-01 Marius Hillenbrand <mhillen@linux.ibm.com>
* gcc.target/s390/float_t-1.c: New test.
* gcc.target/s390/float_t-2.c: New test.
Marius Hillenbrand [Tue, 1 Dec 2020 10:02:27 +0000 (11:02 +0100)]
IBM Z: Configure excess precision for float at compile-time
Historically, float_t has been defined as double on s390 and gcc would
emit double precision insns for evaluating float expressions when in
standard-compliant mode. Configure that behavior at compile-time as prep
for changes in glibc: When glibc ties float_t to double, keep the old
behavior; when glibc derives float_t from FLT_EVAL_METHOD (as on most
other archs), revert to the default behavior (i.e.,
FLT_EVAL_METHOD_PROMOTE_TO_FLOAT). Provide a configure option
--enable-s390-excess-float-precision to override the check.
gcc/ChangeLog:
2020-12-01 Marius Hillenbrand <mhillen@linux.ibm.com>
* configure.ac: Add configure option
--enable-s390-excess-float-precision and check to derive default
from glibc.
* config/s390/s390.c: Guard s390_excess_precision with an ifdef
for ENABLE_S390_EXCESS_FLOAT_PRECISION.
* doc/install.texi: Document --enable-s390-excess-float-precision.
* configure: Regenerate.
* config.in: Regenerate.
Martin Liska [Mon, 30 Nov 2020 14:00:28 +0000 (15:00 +0100)]
testsuite: remove LIT annotation and reduce
I noticed the test-case contains LIT annotation and
it is possible to reduce. I did that with compiler that
was affected by the PR.
gcc/testsuite/ChangeLog:
* g++.dg/torture/pr93347.C: Reduce and remove LIT keywords.
Martin Liska [Mon, 30 Nov 2020 12:07:27 +0000 (13:07 +0100)]
IPA: drop implicit_section again
As mentioned in the PR, since
4656461585bfd0b9 implicit_section
was not set to false when set_section was called with the argument
equal to NULL.
gcc/ChangeLog:
PR ipa/98057
* symtab.c (symtab_node::set_section_for_node): Drop
implicit_section if x_section is NULL.
gcc/testsuite/ChangeLog:
PR ipa/98057
* g++.dg/ipa/pr98057.C: New test.
Jakub Jelinek [Tue, 1 Dec 2020 09:44:40 +0000 (10:44 +0100)]
x86_64: Fix up -fpic -mcmodel=large -fno-plt [PR98063]
On the following testcase with -fpic -mcmodel=large -fno-plt we emit
call puts@GOTPCREL(%rip)
but that is not really appropriate for CM_LARGE_PIC, the .text can be larger
than 2GB in that case and the .got slot further away from %rip than what can
fit into the signed 32-bit immediate.
The following patch computes the address of the .got slot the way it is
computed for that model for function pointer loads, and calls that.
2020-12-01 Jakub Jelinek <jakub@redhat.com>
PR target/98063
* config/i386/i386-expand.c (ix86_expand_call): Handle non-plt
CM_LARGE_PIC calls.
* gcc.target/i386/pr98063.c: New test.
Richard Biener [Tue, 1 Dec 2020 08:19:52 +0000 (09:19 +0100)]
middle-end/98070 - fix realloc builtin fnspec
realloc clobbers errno, note that.
2020-12-01 Richard Biener <rguenther@suse.de>
PR middle-end/98070
* builtins.c (builtin_fnspec): realloc is ".Cw ".
Jakub Jelinek [Tue, 1 Dec 2020 08:41:16 +0000 (09:41 +0100)]
c++, debug: Treat -std=c++20 -gdwarf-5 like C++14 rather than C++98
I have noticed that while we use DW_LANG_C_plus_plus_14 for -std=c++17 -gdwarf-5,
we use DW_LANG_C_plus_plus (aka C++98) for -std=c++20 -gdwarf-5. The
following patch makes those two match.
2020-12-01 Jakub Jelinek <jakub@redhat.com>
* dwarf2out.c (gen_compile_unit_die): Treat GNU C++20
like C++14 for -gdwarf-5.
* g++.dg/debug/dwarf2/lang-cpp17.C: New test.
* g++.dg/debug/dwarf2/lang-cpp20.C: New test.
Jakub Jelinek [Tue, 1 Dec 2020 08:39:04 +0000 (09:39 +0100)]
driver: Don't imply -dD for -g3 -g0 [PR97989]
The driver enables -dD when preprocessing when -g3 is specified, for obvious reasons
that we need the macros to be preserved somewhere for them to make up the debug
info. But it enables it even if -g3 is later overridden to -g2, -g1 or -g0,
where we in the end don't emit .debug_mac{ros,info}.
The following patch passes -dD only if we'll need it.
2020-12-01 Jakub Jelinek <jakub@redhat.com>
PR debug/97989
* gcc.c (cpp_unique_options): Add -dD if %:debug-level-gt(2)
rather than g3|ggdb3|gstabs3|gxcoff3|gvms3.
* gcc.dg/cpp/pr97989-1.c: New test.
* gcc.dg/cpp/pr97989-2.c: New test.
Kito Cheng [Tue, 1 Dec 2020 07:39:09 +0000 (15:39 +0800)]
RISC-V: Drop some commited accidentally code.
gcc/ChangeLog:
* config.gcc (riscv*-*-*): Drop some commited accidentally code.
GCC Administrator [Tue, 1 Dec 2020 00:16:38 +0000 (00:16 +0000)]
Daily bump.
David Malcolm [Mon, 30 Nov 2020 22:37:50 +0000 (17:37 -0500)]
Unbreak build with --disable-analyzer
I broke the build with --disable-analyzer with
g:
66dde7bc64b75d4a338266333c9c490b12d49825, due to:
../../src/gcc/analyzer/analyzer-pass.cc: In member function ‘virtual unsigned int {anonymous}::pass_analyzer::execute(function*)’:
../../src/gcc/analyzer/analyzer-pass.cc:86:3: error: ‘sorry_no_analyzer’ was not declared in this scope
86 | sorry_no_analyzer ();
| ^~~~~~~~~~~~~~~~~
Fixed by including the relevant header file.
Sorry about the breakage.
gcc/analyzer/ChangeLog:
* analyzer-pass.cc: Include "analyzer/analyzer.h" for the
declaration of sorry_no_analyzer; include "tree.h" and
"function.h" as these are needed by it.
Jeff Law [Mon, 30 Nov 2020 22:21:38 +0000 (15:21 -0700)]
Add function comments for recently added member functions.
gcc/
* symtab.c (set_section_for_node): Add function comment.
(set_section_from_node): Likewise.
Ian Lance Taylor [Sat, 28 Nov 2020 19:29:25 +0000 (11:29 -0800)]
internal/cpu: don't define CacheLinePadSize for mips64x
For libgo the definition comes from the generated file cpugen.go.
Fixes PR go/98041
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273866
Ian Lance Taylor [Sat, 28 Nov 2020 14:48:54 +0000 (06:48 -0800)]
compiler, runtime: check len/cap for append(s, make(T, l)...)
The overflow checks done in growslice always reported an error for the
capacity argument, even if it was the length argument that overflowed.
This change lets the code pass the current issue4085b.go test.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273806
Ian Lance Taylor [Sun, 29 Nov 2020 18:16:27 +0000 (10:16 -0800)]
libgo: define SO_RCVTIMEO on 32-bit GNU/Linux
Fixes golang/go#42872
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273892
Ian Lance Taylor [Sun, 29 Nov 2020 02:51:05 +0000 (18:51 -0800)]
compiler: improve error messages for expected curly brace
For golang/go#17328
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273890
Ian Lance Taylor [Sun, 29 Nov 2020 02:47:42 +0000 (18:47 -0800)]
compiler: use correct assignment order for type assertions
For "a, b := v.(T)" we must set a before b.
For golang/go#13433
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273906
Ian Lance Taylor [Sun, 29 Nov 2020 02:22:45 +0000 (18:22 -0800)]
compiler: always use int context for index values
For golang/go#14844
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273889
Ian Lance Taylor [Sat, 28 Nov 2020 20:41:06 +0000 (12:41 -0800)]
compiler: better error messages for missing interface method
For golang/go#10700
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273886