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.
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.
../../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.
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.
David Malcolm [Mon, 30 Nov 2020 19:32:28 +0000 (14:32 -0500)]
Add analyzer plugin support and CPython GIL example
This patch adds a new GCC plugin event: PLUGIN_ANALYZER_INIT, called
when -fanalyzer is starting, allowing for GCC plugins to register
additional state-machine-based checks within -fanalyzer. The idea
is that 3rd-party code might want to add domain-specific checks for
its own APIs - with the caveat that the analyzer is itself still
rather experimental.
As an example, the patch adds a proof-of-concept plugin to the testsuite
for checking CPython code: verifying that code that relinquishes
CPython's global interpreter lock doesn't attempt to do anything with
PyObjects in the sections where the lock isn't held. It also adds a
warning about nested releases of the lock, which is forbidden.
For example:
demo.c: In function 'foo':
demo.c:11:3: warning: use of PyObject '*(obj)' without the GIL
11 | Py_INCREF (obj);
| ^~~~~~~~~
'test': events 1-3
|
| 15 | void test (PyObject *obj)
| | ^~~~
| | |
| | (1) entry to 'test'
| 16 | {
| 17 | Py_BEGIN_ALLOW_THREADS
| | ~~~~~~~~~~~~~~~~~~~~~~
| | |
| | (2) releasing the GIL here
| 18 | foo (obj);
| | ~~~~~~~~~
| | |
| | (3) calling 'foo' from 'test'
|
+--> 'foo': events 4-5
|
| 9 | foo (PyObject *obj)
| | ^~~
| | |
| | (4) entry to 'foo'
| 10 | {
| 11 | Py_INCREF (obj);
| | ~~~~~~~~~
| | |
| | (5) PyObject '*(obj)' used here without the GIL
|
Doing so requires adding some logic for ignoring macro expansions in
analyzer diagnostics, since the insides of Py_INCREF and
Py_BEGIN_ALLOW_THREADS are not of interest to the user for these cases.
gcc/analyzer/ChangeLog:
* analyzer-pass.cc (pass_analyzer::execute): Move sorry call to...
(sorry_no_analyzer): New.
* analyzer.h (class state_machine): New forward decl.
(class logger): New forward decl.
(class plugin_analyzer_init_iface): New.
(sorry_no_analyzer): New decl.
* checker-path.cc (checker_path::fixup_locations): New.
* checker-path.h (checker_event::set_location): New.
(checker_path::fixup_locations): New decl.
* diagnostic-manager.cc
(diagnostic_manager::emit_saved_diagnostic): Call
checker_path::fixup_locations, and call fixup_location
on the primary location.
* engine.cc: Include "plugin.h".
(class plugin_analyzer_init_impl): New.
(impl_run_checkers): Invoke PLUGIN_ANALYZER_INIT callbacks.
* pending-diagnostic.h (pending_diagnostic::fixup_location): New
vfunc.
gcc/testsuite/ChangeLog:
* gcc.dg/plugin/analyzer_gil_plugin.c: New test.
* gcc.dg/plugin/gil-1.c: New test.
* gcc.dg/plugin/gil.h: New header.
* gcc.dg/plugin/plugin.exp (plugin_test_list): Add the new plugin
and test.
Ilya Leoshkevich [Thu, 26 Nov 2020 12:24:23 +0000 (13:24 +0100)]
profopt-execute: unset testname_with_flags if create_gcov fails
When diffing test results, there sometimes occur spurious "New tests
that PASS" / "Old tests that passed, that have disappeared" messages.
The reason is that if create_gcov is not installed, then the cached
testname_with_flags is not cleared and is carried over to the next
test.
gcc/testsuite/ChangeLog:
2020-11-26 Ilya Leoshkevich <iii@linux.ibm.com>
* lib/profopt.exp: Unset testname_with_flags if create_gcov
fails.
dse: Cope with bigger-than-integer modes [PR98037]
dse.c:find_shift_sequence tries to represent a store and load
back as a shift right followed by a truncation. It therefore
needs to find an integer mode in which to do the shift right.
The loop it uses has the form:
which implicitly assumes that read_mode has an equivalent integer mode.
As shown in the testcase, not all modes have such an integer mode.
This patch just makes the code start from the smallest integer mode and
skip modes that are too small. The loop already breaks at the first
mode wider than word_mode.
gcc/
PR rtl-optimization/98037
* dse.c (find_shift_sequence): Iterate over all integers and
skip modes that are too small.
gcc/testsuite/
PR rtl-optimization/98037
* gcc.target/aarch64/sve/acle/general/pr98037.c: New test.
Jonathan Wakely [Mon, 30 Nov 2020 15:02:03 +0000 (15:02 +0000)]
libstdc++: Add new C++20 headers to Doxygen settings
This doesn't actually have any effect unless you also change the
predefined value of __cplusplus, as it's currently 201703L. But if
somebody does want to do that, the new headers will get processed now.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (INPUT): Add <latch> and <semaphore>.
Jonathan Wakely [Mon, 30 Nov 2020 14:39:54 +0000 (14:39 +0000)]
libstdc++: Reduce default test timeout to 360 seconds
The current default of 10 minutes is much longer than most tests need on
common hardware. The slow tests all now have a dg-timeout-factor
directive that gives them more time to run relative to the default. The
default can also be overridden in ~/.dejagnurc or DEJAGNU=site.exp, so
it seems unnecessary to have such a large default.
This reduces the default from 10 minutes to 6 minutes, which still seems
more than enough.
libstdc++-v3/ChangeLog:
* testsuite/lib/libstdc++.exp (libstdc++_init): Reduce
default tool_timeout to 360.
Tobias Burnus [Mon, 30 Nov 2020 14:30:51 +0000 (15:30 +0100)]
Fortran: With OpenACC, ignore OpenMP's cond comp sentinels
gcc/fortran/ChangeLog:
PR fortran/98011
* scanner.c (skip_free_comments, skip_fixed_comments): If only
-fopenacc but not -fopenmp is used, ignore OpenMP's conditional
compilation sentinels. Fix indentation, use 'else if' for readability.
gcc/testsuite/ChangeLog:
PR fortran/98011
* gfortran.dg/goacc/sentinel-free-form.f95:
* gfortran.dg/goacc-gomp/fixed-1.f: New test.
* gfortran.dg/goacc-gomp/free-1.f90: New test.
* gfortran.dg/goacc/fixed-5.f: New test.
Tobias Burnus [Mon, 30 Nov 2020 14:27:44 +0000 (15:27 +0100)]
Fortran: -fno-automatic and -fopenacc / recusion check cleanup
Options: -fopenmp and -fopenacc imply concurrent calls to a
procedure; now also -fopenacc implies -frecursive, disabling
that larger local const-size array variables use static memory.
Run-time recursion check: Always reset the check variable at the
end of the procedure; this avoids a bogus error with -fopenmp
when called twice nonconcurrently/nonrecursively. (Issue requires
using -fno-automatic or -fmax-stack-var-size= to trigger.)
gcc/fortran/ChangeLog:
PR fortran/98010
PR fortran/98013
* options.c (gfc_post_options): Also imply recursive with
-fopenacc.
* trans-decl.c (gfc_generate_function_code): Simplify condition.
Piotr Trojanek [Sun, 15 Nov 2020 00:21:41 +0000 (01:21 +0100)]
[Ada] Simplify analysis of assignment statements
gcc/ada/
* sem_ch5.adb (Set_Assignment_Type): Combine calls to Ekind
using membership test.
(Should_Transform_BIP_Assignment): Replace assignment to a
"Result" variable with simple return statements; avoid repeated
calls to Unqual_Conv by declaring a local constant.
Eric Botcazou [Sat, 14 Nov 2020 15:12:04 +0000 (16:12 +0100)]
[Ada] Fix internal error on extended return and fixed-point result
gcc/ada/
* contracts.adb (Check_Type_Or_Object_External_Properties): Make
sure to exclude all return objects from the SPARK legality rule
on effectively volatile variables.
* exp_ch6.adb (Expand_N_Extended_Return_Statement): Use the fast
track only when the declaration of the return object can be
dropped.
Gary Dismukes [Mon, 2 Nov 2020 06:21:09 +0000 (01:21 -0500)]
[Ada] Implement inheritance for Default_Initial_Condition and address other gaps
gcc/ada/
* einfo.ads (Is_Partial_DIC_Procedure): New function.
(Partial_DIC_Procedure): New procedure.
* einfo.adb (Is_Partial_DIC_Procedure): New function to return
whether a subprogram is a partial Default_Initial_Condition
procedure by checking the name (to avoid adding a new field).
(DIC_Procedure): Add a test that excludes partial DIC procedures
from being returned.
(Partial_DIC_Procedure): New procedure to return the partial DIC
procedure of a type, if it has one (otherwise returns Empty).
(Set_DIC_Procedure): Remove check for duplicate DIC procedures.
* exp_aggr.adb (Gen_Assign): Generate a call to the type's DIC
procedure in the case where an array component is default
initialized (due to an association with a box).
(Build_Record_Aggr_Code): For an extension aggregate, generate a
call to the ancestor type's DIC procedure (if any) when the
ancestor part is a subtype mark. For a record component
association that was specified with a box (tested for by
checking the new flag Was_Default_Init_Box_Association),
generate a call to the component type's DIC procedure (if it has
one).
* exp_ch4.adb (Expand_N_Allocator): When the allocated object is
default initialized and the designated type has a DIC aspect,
generate a call to the DIC procedure.
* exp_util.ads (Build_DIC_Call): Change the formal Obj_Id to
name Obj_Name, and change its type from Entity_Id to Node_Id
(and update comment).
(Build_DIC_Procedure_Body): Add formal Partial_DIC, remove
formal For_Freeze, and update comment accordingly.
(Build_DIC_Procedure_Declaration): Add formal Partial_DIC and
update comment.
* exp_util.adb
(Build_DIC_Call): Revised to use its Obj_Name (formerly Obj_Id)
formal directly rather than calling New_Occurrence_Of on it, to
allow arbitrary names to be passed rather than being limited to
Entity_Ids.
(Build_DIC_Procedure_Body): Call Add_Parent_DICs to generate
checks for DICs associated with any parent types, implementing
the required "additive" semantics for DICs. When building a DIC
procedure body for a partial view (when Partial_DIC is True),
call Add_Own_DIC when the type has its own DIC. In the case of
"full" DIC procedures, a call is generated to any partial DIC
procedure of the type (unless the procedure has a null body),
along with checks for any DICs inherited by the full view.
(Build_DIC_Procedure_Declaration): Add handling for partial DIC
procedures. For the suffix of a regular DIC procedure's name,
use "DIC" (instead of "Default_Initial_Condition"), and for the
suffix of a partial DIC procedure's name, use "Partial_DIC".
(Add_DIC_Check): Add the DIC pragma to the list of seen pragmas
(Pragmas_Seen).
(Add_Inherited_Tagged_DIC): Remove the formals Par_Typ,
Deriv_Typ, and Obj_Id, and add formal Expr, which denotes DIC's
expression. Remove the call to Replace_References (which is now
done in Add_Inherited_DICs).
(Add_Inherited_DICs): New procedure to locate a DIC pragma
associated with a parent type, replace its references
appropriately (such as any current instance references), and add
a check for the DIC.
(Add_Own_DIC): Add an Obj_Id formal to allow caller to pass the
_init formal of the generated DIC procedure.
(Add_Parent_DICs): New procedure to traverse a type's parents,
looking for DICs associated with those and calling
Add_Inherited_DICs to apply the appropriate DIC checks.
(Is_Verifiable_DIC_Pragma): Treat pragmas that have an Empty
first argument the same as a pragma without any arguments
(returning False for that case).
* exp_ch3.adb (Init_One_Dimension): Generate calls to the
component's DIC procedure when needed.
(Possible_DIC_Call): New function nested in Init_One_Dimension
to build a call to the array component type's DIC-checking
function when appropriate.
(Build_Array_Init_Proc): The presence of a DIC on the component
type is an additional condition for generating an init proc for
an array type.
(Build_Init_Statements): When the record component's type has a
DIC, and the component declaration does not have an
initialization expression, generate a call to the component
type's DIC procedure.
(Expand_N_Object_Declaration): Modify the call to Build_DIC_Call
to pass a new occurrence of the object's defining id rather than
the id itself.
(Freeze_Type): Only build a type's DIC procedure (if it has one)
for types that are not interfaces.
* exp_spark.adb (Expand_SPARK_N_Freeze_Type): Remove From_Freeze
actual and add a ??? comment.
(Expand_SPARK_N_Object_Declaration): Modify call to
Build_DIC_Call to pass a new occurrence of the object id rather
than the object id itself.
* sem_aggr.adb (Resolve_Record_Aggregate): Declare local flag
Is_Box_Init_By_Default and set it in cases where the component
association has a box and the component is being initialized by
default (as opposed to initialized by an initialization
expression associated with the component's declaration).
(Add_Association): If the association has a box for a component
initialized by default, the flag
Was_Default_Init_Box_Association is set on the new component
association (for later testing during expansion).
(Get_Value): Reset Is_Box_Init_By_Default to False.
* sem_ch3.adb (Build_Assertion_Bodies_For_Type): Rearrange code
to build DIC procedure bodies for a (noninterface) type that
Has_Own_DIC (for partial type views) or Has_DIC (for full type
views) as appropriate.
* sem_ch13.adb (Analyze_Aspect_Specifications,
Aspect_Default_Initial_Condition): Add an extra argument to the
DIC pragma to denote the type associated with the pragma (for
use in Build_DIC_Procedure_Body).
* sem_prag.adb (Analyze_Pragma): Allow two arguments for pragma
Default_Initial_Condition. If not already present, add an extra
argument denoting the type that the pragma is associated with.
* sem_util.adb (Propagate_DIC_Attributes): Retrieve any partial
DIC procedure associated with the type and add it to the type's
list of subprograms (Subprograms_For_Type).
* sinfo.ads (Was_Default_Init_Box_Association): New flag on
N_Component_Association nodes. Add subprograms to get and set
flag, as well as updating the documentation.
* sinfo.adb (Was_Default_Init_Box_Association): New function to
retrieve the corresponding flag (Flag14).
(Set_Was_Default_Init_Box_Association): New procedure to set the
corresponding flag (Flag14).
* libgnat/a-nbnbre.adb (Float_Conversions): Instantiate Conv
package only once in the body.
(Fixed_Conversions.Float_Aux): New instance.
(Fixed_Conversions.Conv_I): Likewise.
(Fixed_Conversions.Conv_U): Likewise.
(Fixed_Conversions.LLLI): New subtype.
(Fixed_Conversions.LLLU): Likewise.
(Fixed_Conversions.Too_Large): New constant.
(Fixed_Conversions.To_Big_Real): Reimplement.
(Fixed_Conversions.From_Big_Real): Likewise.
Ed Schonberg [Tue, 10 Nov 2020 15:16:49 +0000 (10:16 -0500)]
[Ada] Spurious error on iterator over container with modified private part
gcc/ada/
* exp_ch5.adb (Expand_Iterator_Loop_Over_Container): Check the
signature of the private operation Get_Element_Access to prevent
accidental use of a user-defined homonym subprogram.
Piotr Trojanek [Mon, 9 Nov 2020 13:13:58 +0000 (14:13 +0100)]
[Ada] Fix folding of comparison operators in GNATprove mode
gcc/ada/
* exp_util.adb (Get_Current_Value_Condition): Don't use current
value tracking in GNATprove mode.
* sem_res.adb (Resolve_Comparison_Op): Remove incomplete
special-casing for folding in GNATprove mode.
Bob Duff [Sun, 8 Nov 2020 21:54:56 +0000 (16:54 -0500)]
[Ada] Crash on ghost assignment check for illegal code
gcc/ada/
* errout.adb (Error_Msg_NEL): Do not call Set_Posted if errors
are being ignored.
(Error_Msg): Change Errors_Must_Be_Ignored to use the getter.
* sem_ch8.adb (Find_Direct_Name): Do not skip all the error
checks when ignoring errors, but instead do not add an entry to
the Urefs table if errors are being ignored.
* exp_ch5.adb: Minor comment fix.
Arnaud Charlet [Sat, 7 Nov 2020 18:53:05 +0000 (19:53 +0100)]
[Ada] Confusion in Transform_Function_Array and internal subprograms
gcc/ada/
* ali-util.adb (Get_File_Checksum): Remove dead code.
* exp_ch4.adb (Expand_Boolean_Operator, Expand_N_Op_Not,
Make_Boolean_Array_Op): Take Transform_Function_Array into
account.
* exp_ch6.adb (Expand_Call_Helper): Update comment. Code
cleanup.
* exp_util.adb (Build_Procedure_Form): Use new predefined name
Name_UP_RESULT.
* snames.ads-tmpl (Name_UP_RESULT): New predefined name. Code
cleanup: remove unused names from the project parser, moved to
gprbuild sources.
* xsnamest.adb: Add support for uppercase names.
Ed Schonberg [Fri, 6 Nov 2020 15:21:06 +0000 (10:21 -0500)]
[Ada] Spurious visibility error in subprogram body in with_clause
gcc/ada/
* sem_util.adb (Enter_Name): When an inherited operation for a
local derived type is hidden by an explicit declaration of a
non-overloadable entity in the same scope, make the inherited
operation non-visible to prevent its accidental use elsewhere.
Jonathan Wakely [Mon, 30 Nov 2020 12:28:25 +0000 (12:28 +0000)]
doc: Fix description of dg-require-effective-target
The optional target selector for the dg-require-effective-target
directive needs to be { target selector } not just { selector } as
currently documented.
gcc/ChangeLog:
* doc/sourcebuild.texi (Directives): Fix description of
dg-require-effective-target to include "target" in selector.
Jonathan Wakely [Mon, 30 Nov 2020 11:41:03 +0000 (11:41 +0000)]
gcc-changelog: Add libstdc++-v3/testsuite to wildcard prefixes
This allows using "testsuite/*" in libstdc++-v3/ChangeLog entries, which
was one of the original motivations for adding wildcard support in the
first place:
https://gcc.gnu.org/pipermail/gcc/2020-June/232719.html
Ilya Leoshkevich [Tue, 24 Nov 2020 21:47:11 +0000 (22:47 +0100)]
rtl_dump_bb: fix segfault when reporting internal error
During ICE reporting, sometimes rtl_dump_bb is called on partially
initialized basic blocks. This produces another ICE, obscuring the
original problem.
Fix by checking that that basic blocks are initialized before touching
their bb_infos.
gcc/ChangeLog:
2020-11-25 Ilya Leoshkevich <iii@linux.ibm.com>
* cfgrtl.c (rtl_bb_info_initialized_p): New function.
(rtl_dump_bb): Use rtl_bb_info_initialized_p before accessing bb
insns.
[Obvious] arm: Fix test from failing on some targets [PR91816]
This recently submitted test was found to fail on some Cortex-M
targets. This was because codegen on these CPUs would emit a ldr
instead of a movw/movt pair, resulting in an overall smaller test
(i.e. the branch wasn't as far) and the behaviour being tested
for not being triggered.
This commit doubles the size of the test to account for this.
Jakub Jelinek [Mon, 30 Nov 2020 09:55:43 +0000 (10:55 +0100)]
expansion: Improve double-word modulo by certain constant divisors [PR97459]
As discussed in the PR, e.g. on x86_64 (both -m32 and -m64) there is no
double-word modulo and so we expand it to a __{,u}mod[dt]i3 call.
For certain constant divisors we can do better. E.g. consider
32-bit word-size, 0x100000000ULL % 3 == 1, so we can use partly the Hacker's
delight modulo by summing digits approach and optimize
unsigned long long foo (unsigned long long x) { return x % 3; }
as
unsigned long long foo (unsigned long long x) {
unsigned int sum, carry;
carry = __builtin_add_overflow ((unsigned int) x, (unsigned int) (x >> 32), &sum);
sum += carry;
return sum % 3;
}
Similarly, 0x10000000ULL % 5 == 1 (note, 1 << 28), so
unsigned long long bar (unsigned long long x) { return x % 5; }
as
unsigned long long bar (unsigned long long x) {
unsigned int sum = x & ((1 << 28) - 1);
sum += (x >> 28) & ((1 << 28) - 1);
sum += (x >> 56);
return sum % 5;
}
etc.
And we can do also signed modulo,
long long baz (long long x) { return x % 5; }
as
long long baz (long long x) {
unsigned int sum = x & ((1 << 28) - 1);
sum += ((unsigned long long) x >> 28) & ((1 << 28) - 1);
sum += ((unsigned long long) x >> 56);
/* Sum adjustment for negative x. */
sum += (x >> 63) & 3;
unsigned int rem = sum % 5;
/* And finally adjust it to the right interval for negative values. */
return (int) (rem + ((x >> 63) & -4));
}
2020-11-30 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/97459
* internal-fn.h (expand_addsub_overflow): Declare.
* internal-fn.c (expand_addsub_overflow): No longer static.
* optabs.c (expand_doubleword_mod): New function.
(expand_binop): Optimize double-word mod with constant divisor.
* gcc.dg/pr97459-1.c: New test.
* gcc.dg/pr97459-2.c: New test.
Kito Cheng [Wed, 25 Nov 2020 09:04:33 +0000 (17:04 +0800)]
Fix print_multilib_info when default arguments appear in the option list with '!'
This issue is found when we try to always define MULTILIB_DEFAULTS for -march
and -mabi for RISC-V back-end, however `-print-multi-lib` will skip
multi-lib setting if match any one of flag in MULTILIB_DEFAULTS, even
some options are specified in the option list with '!'.
`-print-multi-lib` willl show `.` and `rv32imafc/ilp32f` only, because
the mabi=ilp32 is matched, however there is `!march=rv32i` in `rv32im/ilp32`, so
`rv32im/ilp32` should keep, because it reject march=rv32i.
Note: This can be reproduced via following configure options with patch [1]:
gcc/configure --target=riscv64-elf --with-arch=rv32i --with-abi=ilp32 \
--with-multilib-generator="rv32i-ilp32--;rv32im-ilp32--;rv32imafc-ilp32f--"
Martin Sebor [Sun, 29 Nov 2020 22:09:30 +0000 (15:09 -0700)]
Handle PHIs in compute_objsize.
PR middle-end/92936 - missing warning on a past-the-end store to a PHI
PR middle-end/92940 - incorrect offset and size in -Wstringop-overflow for out-of-bounds store into VLA and two offset ranges
PR middle-end/89428 - missing -Wstringop-overflow on a PHI with variable offset
gcc/ChangeLog:
PR middle-end/92936
PR middle-end/92940
PR middle-end/89428
* builtins.c (access_ref::access_ref): Initialize member.
(access_ref::phi): New function.
(access_ref::get_ref): New function.
(access_ref::add_offset): Remove duplicate assignment.
(maybe_warn_for_bound): Add "maybe" kind of warning messages.
(warn_for_access): Same.
(inform_access): Rename...
(access_ref::inform_access): ...to this. Print PHI arguments. Format
offset the same as size and simplify. Improve printing of allocation
functions and VLAs.
(check_access): Adjust to the above.
(gimple_parm_array_size): Change argument.
(handle_min_max_size): New function.
* builtins.h (class ssa_name_limit_t): Move class here from
tree-ssa-strlen.c.
(struct access_ref): Declare new members.
(gimple_parm_array_size): Change argument.
* tree-ssa-strlen.c (maybe_warn_overflow): Use access_ref and simplify.
(handle_builtin_memcpy): Correct argument passed to maybe_warn_overflow.
(handle_builtin_memset): Same.
(class ssa_name_limit_t): Move class to builtins.{h,c}.
gcc/testsuite/ChangeLog:
PR middle-end/92936
PR middle-end/92940
PR middle-end/89428
* c-c++-common/Wstringop-overflow-2.c: Adjust text of expected
informational notes.
* g++.dg/warn/Wstringop-overflow-3.C: Same.
* g++.dg/warn/Wplacement-new-size.C: Remove a test for a no longer
issued warning.
* gcc.dg/Warray-bounds-43.c: Removed unused declarations.
* gcc.dg/Wstringop-overflow-11.c: Remove xfails.
* gcc.dg/Wstringop-overflow-12.c: Same.
* gcc.dg/Wstringop-overflow-17.c: Adjust text of expected messages.
* gcc.dg/Wstringop-overflow-27.c: Same. Remove xfails.
* gcc.dg/Wstringop-overflow-28.c: Adjust text of expected messages.
* gcc.dg/Wstringop-overflow-29.c: Same.
* gcc.dg/Wstringop-overflow-37.c: Same.
* gcc.dg/Wstringop-overflow-46.c: Same.
* gcc.dg/Wstringop-overflow-47.c: Same.
* gcc.dg/Wstringop-overflow-54.c: Same.
* gcc.dg/warn-strnlen-no-nul.c: Add expected warning.
* gcc.dg/Wstringop-overflow-7.c: New test.
* gcc.dg/Wstringop-overflow-58.c: New test.
* gcc.dg/Wstringop-overflow-59.c: New test.
* gcc.dg/Wstringop-overflow-60.c: New test.
* gcc.dg/Wstringop-overflow-61.c: New test.
* gcc.dg/Wstringop-overflow-62.c: New test.
* gcc.dg/Wstringop-overflow-63.c: New test.
* gcc.dg/Wstringop-overflow-64.c: New test.
Iain Buclaw [Sat, 28 Nov 2020 20:40:51 +0000 (21:40 +0100)]
d: Add darwin support for D language front-end
gcc/ChangeLog:
* config.gcc (*-*-darwin*): Set d_target_objs and target_has_targetdm.
* config/elfos.h (TARGET_D_MINFO_SECTION): New macro.
(TARGET_D_MINFO_START_NAME): New macro.
(TARGET_D_MINFO_END_NAME): New macro.
* config/t-darwin: Add darwin-d.o.
* doc/tm.texi: Regenerate.
* doc/tm.texi.in (D language and ABI): Add @hook for
TARGET_D_MINFO_SECTION, TARGET_D_MINFO_START_NAME, and
TARGET_D_MINFO_END_NAME.
* config/darwin-d.c: New file.
gcc/d/ChangeLog:
* d-target.def (d_minfo_section): New hook.
(d_minfo_start_name): New hook.
(d_minfo_end_name): New hook.
* modules.cc: Include d-target.h.
(register_moduleinfo): Update to use new targetdm hooks.
Jan Hubicka [Sun, 29 Nov 2020 15:27:35 +0000 (16:27 +0100)]
Detect unused parameters in ipa-modref
* ipa-modref.c (modref_lattice::merge): Do nothing if F is EAF_UNUSED.
(analyze_parms): Detect unused params.
(modref_merge_call_site_flags): Merge correct EAF_UNUSED.
Iain Buclaw [Sun, 29 Nov 2020 11:49:52 +0000 (12:49 +0100)]
d: Remove d_size_t from front-end sources (PR 87788)
The typedef for d_size_t assumes that the implementation of the
front-end is written in D itself, where size_t can map only to uint32_t
or uint64_t. As that is not the case for the current D front-end, the
typedef should be removed. This would fix the bootstrap on targets where
in C++ size_t is a long, such as darwin i386.
Eric Botcazou [Sat, 28 Nov 2020 15:37:12 +0000 (16:37 +0100)]
Improve support of simple bit-fields in -fdump-ada-spec
This fixes an issue with nested structures and adds an Alignment clause
to counter the effect of the Pack aspect.
gcc/c-family/ChangeLog:
* c-ada-spec.c (dump_nested_type) <RECORD_TYPE>: Remove obsolete code.
(dump_ada_structure): Also deal with convention, unchecked union and
bit-field for nested types. In the latter case, print an Alignment
aspect along with the Pack aspect.
Eric Botcazou [Sat, 28 Nov 2020 11:54:48 +0000 (12:54 +0100)]
Fix PR target/97939
The little dance around 4096 that add/sub instructions do on the SPARC
needs to be taken into account for the overflow arithmetic operations.
It cannot be done for unsigned overflow, but it can be done for signed
overflow.
gcc/ChangeLog:
PR target/97939
* config/sparc/predicates.md (arith_double_add_operand): Comment.
* config/sparc/sparc.md (uaddvdi4): Use arith_double_operand.
(addvdi4): Use arith_double_add_operand.
(addsi3): Remove useless attributes.
(addvsi4): Use arith_add_operand.
(*cmp_ccv_plus): Likewise and add second alternative accordingly.
(*cmp_ccxv_plus): Likewise.
(*cmp_ccv_plus_set): Likewise.
(*cmp_ccxv_plus_set): Likewise.
(*cmp_ccv_plus_sltu_set): Likewise.
(usubvdi4): Use arith_double_operand.
(subvdi4): Use arith_double_add_operand.
(subsi3): Remove useless attributes.
(subvsi4): Use arith_add_operand.
(*cmp_ccv_minus): Likewise and add second alternative accordingly.
(*cmp_ccxv_minus): Likewise.
(*cmp_ccv_minus_set): Likewise.
(*cmp_ccxv_minus_set): Likewise.
(*cmp_ccv_minus_sltu_set): Likewise.
(negsi2): Use register_operand.
(unegvsi3): Likewise.
(negvsi3) Likewise.
(*cmp_ccnz_neg): Likewise.
(*cmp_ccxnz_neg): Likewise.
(*cmp_ccnz_neg_set): Likewise.
(*cmp_ccxnz_neg_set): Likewise.
(*cmp_ccc_neg_set): Likewise.
(*cmp_ccxc_neg_set): Likewise.
(*cmp_ccc_neg_sltu_set): Likewise.
(*cmp_ccv_neg): Likewise.
(*cmp_ccxv_neg): Likewise.
(*cmp_ccv_neg_set): Likewise.
(*cmp_ccxv_neg_set): Likewise.
(*cmp_ccv_neg_sltu_set): Likewise.
gcc/testsuite/ChangeLog:
* gcc.target/sparc/overflow-6.c: New test.
Thomas Koenig [Sat, 28 Nov 2020 11:36:28 +0000 (12:36 +0100)]
Generate correct fn specs for some Fortran library functions.
This patch works by generating the correct fn spec from the
actual arguments in specific_intrinsic_symbol, and by passing this
down via gfc_get_extern_function_decl to gfc_get_function_type.
CSHIFT remains to be done.
gcc/fortran/ChangeLog:
PR fortran/97454
* trans-decl.c (gfc_get_extern_function_decl): Add argument
fnspec.
* trans-intrinsic.c (MAX_SPEC_ARG): Define.
(intrinsic_fnspec): New function.
(ADD_CHAR): Define.
(specific_intrinsic_symbol): Adjust comment. Pass
fn spec to gfc_get_extern_function_decl.
(gfc_conv_intrinsic_funcall): Add ANY, ALL, NORM2, PRODUCT
and SUM intrnisic. Add FIXME for cshift et al.
* trans-types.c (gfc_get_function_type): Add fnspec argument,
handle it.
* trans-types.h (gfc_get_function_type): Add optinal fnspec
argument.
* trans.h (gfc_get_extern_function_decl): Likewise.
Joseph Myers [Fri, 27 Nov 2020 22:40:01 +0000 (22:40 +0000)]
preprocessor: Fix #line overflow check [PR97602]
The preprocessor check for overflow (of linenum_type = unsigned int)
when reading the line number in a #line directive is incomplete; it
checks "reg < reg_prev" which doesn't cover all cases where
multiplying by 10 overflowed. Fix this by checking for overflow
before rather than after it occurs (using essentially the same logic
as used by e.g. glibc printf when reading width and precision values
from strings).
Bootstrapped with no regressions for x86_64-pc-linux-gnu.
libcpp/
2020-11-27 Joseph Myers <joseph@codesourcery.com>
PR preprocessor/97602
* directives.c (strtolinenum): Check for overflow before it
occurs. Correct comment.
gcc/testsuite/
2020-11-27 Joseph Myers <joseph@codesourcery.com>
PR preprocessor/97602
* gcc.dg/cpp/line9.c, gcc.dg/cpp/line10.c: New tests.
Iain Buclaw [Fri, 27 Nov 2020 12:15:44 +0000 (13:15 +0100)]
libphobos: Fix segfault at run-time when using custom Fibers (PR 98025)
When libphobos is configured with --enable-cet, this adds extra fields
to the Fiber class to support the ucontext_t fallback implementation.
These fields get omitted when compiling user code unless they also used
`-fversion=CET' to build their project, which resulted in data being
overwritten from within swapcontext().
On reviewing the ucontext_t definitions, it was found that the shadow
stack fields were missing, and the struct size didn't match up on X32.
This has been fixed in upstream druntime and merged down here.
Adds support for FreeBSD/x86 53-bit precision reals, updates bindings
for FreeBSD 12.x, and removes all support code and tests for the
extern(Pascal) calling convention.
Iain Buclaw [Thu, 26 Nov 2020 09:46:36 +0000 (10:46 +0100)]
d: Add float and double overloads for all core.math intrinsics
For the math intrinsics: cos, fabs, ldexp, rint, rndtol, and sin, new
overloads have been added to the core.math module for matching float and
double types. These have been implemented in the compiler.
A recent change to dump_function_to_file started triggering some
scan-tree-dump tests to FAIL, these have been adjusted as well when
updating the test.
projects / thirdparty / gcc.git / log
