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gcc/ada/
* libgnat/a-cbsyqu.ads (Implementation): Provide a box
initialization for the element array used internally to
represent the queue, so that its components are properly
initialized if the given element type has default
initialization. Suppress warnings on the rest of the package in
case the element type has no default or discriminant, because it
is bound to be confusing to the user.
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gcc/ada/
* sem_util.adb (Inherit_Predicate_Flags): No-op before Ada 2012.
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gcc/ada/
* exp_ch7.adb (Make_Final_Call, Make_Init_Call): Take protected
types into account.
* sem_util.ads: Fix typo.
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gcc/ada/
* checks.adb: Rework error messages.
* exp_ch3.adb: Likewise.
* freeze.adb: Likewise.
* lib-load.adb: Likewise.
* par-ch12.adb: Likewise.
* par-ch3.adb: Likewise.
* par-ch4.adb: Likewise.
* par-ch9.adb: Likewise.
* sem_aggr.adb: Likewise.
* sem_attr.adb: Likewise.
* sem_cat.adb: Likewise.
* sem_ch10.adb: Likewise.
* sem_ch12.adb: Likewise.
(Instantiate_Type): Fix CODEFIX comment, applicable only on
continuation message, and identify the second message as a
continuation.
* sem_ch13.adb: Rework error messages.
* sem_ch3.adb: Likewise.
* sem_ch4.adb: Likewise.
* sem_ch5.adb: Likewise.
* sem_ch6.adb: Likewise.
* sem_ch8.adb: Likewise.
* sem_ch9.adb: Likewise.
* sem_prag.adb: Likewise.
* sem_res.adb: Likewise.
* sem_util.adb: Likewise.
(Wrong_Type): Fix CODEFIX comment, applicable only on
continuation message, and identify the second message as a
continuation.
* symbols.adb: Rework error messages.
gcc/testsuite/
* gnat.dg/interface6.adb, gnat.dg/not_null.adb,
gnat.dg/protected_func.adb: Adjust error messages.
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gcc/ada/
* sem_attr.adb (OK_Self_Reference): Return True if node does not
come from source (e.g. a rewritten aggregate).
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gcc/ada/
* sem_ch13.adb (Parse_Aspect_Stable_Properties): Fix style;
limit the scope of local variables; remove extra assignment in
Extract_Entity.
(Validate_Aspect_Stable_Properties): Simplify with procedural
Next.
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When cross-compiling GCC with target libc headers available and
configure option --enable-s390-excess-float-precision has been omitted,
identify whether they clamp float_t to double or respect
__FLT_EVAL_METHOD__ via a compile test that coerces the build-system
compiler to use the target headers. Then derive the setting from that.
gcc/ChangeLog:
2020-12-16 Marius Hillenbrand <mhillen@linux.ibm.com>
* configure.ac: Change --enable-s390-excess-float-precision
default behavior for cross compiles with target headers.
* configure: Regenerate.
* doc/install.texi: Adjust documentation.
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ChangeLog:
2020-12-17 Marius Hillenbrand <mhillen@linux.ibm.com>
* MAINTAINERS (Write After Approval): Add myself.
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gcc/fortran/ChangeLog:
PR fortran/92587
* match.c (gfc_match_assignment): Move gfc_find_vtab call from here ...
* resolve.c (gfc_resolve_code): ... to here.
gcc/testsuite/ChangeLog:
PR fortran/92587
* gfortran.dg/finalize_37.f90: New test.
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The dependency check for FORALL constructs already handled pointer
components to derived types, but missed allocatables. Fix that.
gcc/fortran/ChangeLog:
PR fortran/98307
* trans-stmt.c (check_forall_dependencies): Extend dependency
check to allocatable components of derived types.
gcc/testsuite/ChangeLog:
PR fortran/98307
* gfortran.dg/forall_19.f90: New test.
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2020-12-16 Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp>
gcc/
* config/xtensa/xtensa.md (*ashlsi3_1, *ashlsi3_3x, *ashrsi3_3x)
(*lshrsi3_3x): New patterns.
gcc/testsuite/
* gcc.target/xtensa/shifts.c: New test.
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This patch rewrites fwprop.c to use the RTL SSA framework. It tries
as far as possible to mimic the old behaviour, even in caes where
that doesn't fit naturally with the new framework. I've added ???
comments to mark those places, but I think “fixing” them should
be done separately to make bisection easier.
In particular:
* The old implementation iterated over uses, and after a successful
substitution, the new insn's uses were added to the end of the list.
The pass still processed those uses, but because it processed them at
the end, it didn't fully optimise one instruction before propagating
it into the next.
The new version follows the same approach for comparison purposes,
but I'd like to drop that as a follow-on patch.
* The old implementation operated on single use sites (DF_REF_LOCs).
This doesn't work well for instructions with match_dups, where it's
necessary to update both an operand and its dups at the same time.
For example, attempting to substitute into a divmod instruction would
fail because only the div or the mod side would be updated.
The new version again follows this to some extent for comparison
purposes (although not exactly). Again I'd like to drop it as a
follow-on patch.
One difference is that if a register occurs in multiple MEM addresses
in a set, the new version will try to update them all at once. This is
what causes the SVE ACLE st4* output to improve.
Also, the old version didn't naturally guarantee termination (PR79405),
whereas the new one does.
gcc/
* fwprop.c: Rewrite to use the RTL SSA framework.
gcc/testsuite/
* gcc.dg/rtl/x86_64/test-return-const.c.before-fwprop.c: Don't
expect insn updates to be deferred.
* gcc.target/aarch64/sve/acle/asm/st4_s8.c: Expect the addition
to be folded into the address.
* gcc.target/aarch64/sve/acle/asm/st4_u8.c: Likewise.
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This patch adds the RTL SSA infrastructure itself. The following
fwprop.c patch will make use of it.
gcc/
* configure.ac: Add rtl-ssa to the list of dependence directories.
* configure: Regenerate.
* Makefile.in (rtl-ssa-warn): New variable.
(OBJS): Add the rtl-ssa object files.
* emit-rtl.h (rtl_data::ssa): New field.
* rtl-ssa.h: New file.
* system.h: Include <functional> when INCLUDE_FUNCTIONAL is defined.
* rtl-ssa/access-utils.h: Likewise.
* rtl-ssa/accesses.h: New file.
* rtl-ssa/accesses.cc: Likewise.
* rtl-ssa/blocks.h: New file.
* rtl-ssa/blocks.cc: Likewise.
* rtl-ssa/change-utils.h: Likewise.
* rtl-ssa/changes.h: New file.
* rtl-ssa/changes.cc: Likewise.
* rtl-ssa/functions.h: New file.
* rtl-ssa/functions.cc: Likewise.
* rtl-ssa/insn-utils.h: Likewise.
* rtl-ssa/insns.h: New file.
* rtl-ssa/insns.cc: Likewise.
* rtl-ssa/internals.inl: Likewise.
* rtl-ssa/is-a.inl: Likewise.
* rtl-ssa/member-fns.inl: Likewise.
* rtl-ssa/movement.h: Likewise.
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This patch adds some documentation to rtl.texi about the SSA form.
It only really describes the high-level structure -- I think for
API-level stuff it's better to rely on function comments instead.
gcc/
* doc/rtl.texi (RTL SSA): New node.
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This patch adds a routine for finding a “simple” SET for a register
definition. See the comment in the patch for details.
gcc/
* rtl.h (simple_regno_set): Declare.
* rtlanal.c (simple_regno_set): New function.
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This patch adds some classes for gathering the list of registers
and memory that are read and written by an instruction, along
with various properties about the accesses. In some ways it's
similar to the information that DF collects for registers,
but extended to memory. The main reason for using it instead
of DF is that it can analyse tentative changes to instructions
before they've been committed.
The classes also collect general information about the instruction,
since it's cheap to do and helps to avoid multiple walks of the same
RTL pattern.
I've tried to optimise the code quite a bit, since with later patches
it becomes relatively performance-sensitive. See the discussion in
the comments for the trade-offs involved.
I put the declarations in a new rtlanal.h header file since it
seemed a bit excessive to put so much new inline stuff in rtl.h.
gcc/
* rtlanal.h: New file.
(MEM_REGNO): New constant.
(rtx_obj_flags): New namespace.
(rtx_obj_reference, rtx_properties): New classes.
(growing_rtx_properties, vec_rtx_properties_base): Likewise.
(vec_rtx_properties): New alias.
* rtlanal.c: Include it.
(rtx_properties::try_to_add_reg): New function.
(rtx_properties::try_to_add_dest): Likewise.
(rtx_properties::try_to_add_src): Likewise.
(rtx_properties::try_to_add_pattern): Likewise.
(rtx_properties::try_to_add_insn): Likewise.
(vec_rtx_properties_base::grow): Likewise.
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When using validate_change to make a group of changes, you have
to remember to cancel them if something goes wrong. This patch
adds an RAII class to make that easier. See the comments in the
patch for details and examples.
gcc/
* recog.h (insn_change_watermark): New class.
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This patch adds yet another way of propagating into an instruction and
simplifying the result. (The net effect of the series is to keep the
total number of propagation approaches the same though, since a later
patch removes the fwprop.c routines.)
One of the drawbacks of the validate_replace_* routines is that
they only do simple simplifications, mostly canonicalisations:
/* Do changes needed to keep rtx consistent. Don't do any other
simplifications, as it is not our job. */
if (simplify)
simplify_while_replacing (loc, to, object, op0_mode);
But substituting can often lead to real simplification opportunities.
simplify-rtx.c:simplify_replace_rtx does fully simplify the result,
but it only operates on specific rvalues rather than full instruction
patterns. It is also nondestructive, which means that it returns a
new rtx whenever a substitution or simplification was possible.
This can create quite a bit of garbage rtl in the context of a
speculative recog, where changing the contents of a pointer is
often enough.
The new routines are therefore supposed to provide simplify_replace_rtx-
style substitution in recog. They go to some effort to prevent garbage
rtl from being created.
At the moment, the new routines fail if the pattern would still refer
to the old "from" value in some way. That might be unnecessary in
some contexts; if so, it could be put behind a configuration parameter.
gcc/
* recog.h (insn_propagation): New class.
* recog.c (insn_propagation::apply_to_mem_1): New function.
(insn_propagation::apply_to_rvalue_1): Likewise.
(insn_propagation::apply_to_lvalue_1): Likewise.
(insn_propagation::apply_to_pattern_1): Likewise.
(insn_propagation::apply_to_pattern): Likewise.
(insn_propagation::apply_to_rvalue): Likewise.
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In some cases, it can be convenient to roll back the changes that
have been made by validate_change to see how things looked before,
then reroll the changes. For example, this makes it possible
to defer calculating the cost of an instruction until we know that
the result is actually needed. It can also make dumps easier to read.
This patch adds a couple of helper functions for doing that.
gcc/
* recog.h (temporarily_undo_changes, redo_changes): Declare.
* recog.c (temporarily_undone_changes): New variable.
(validate_change_1, confirm_change_group): Check that it's zero.
(cancel_changes): Likewise.
(swap_change, temporarily_undo_changes): New functions.
(redo_changes): Likewise.
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A later patch wants to be able to use the validate_change machinery
to reduce the XVECLEN of a PARALLEL. This should be more efficient
than allocating a separate PARALLEL at a possibly distant memory
location, especially since the new PARALLEL would be garbage rtl if
the new pattern turns out not to match. Combine already pulls this
trick with SUBST_INT.
This patch adds a general helper for doing that.
gcc/
* recog.h (validate_change_xveclen): Declare.
* recog.c (change_t::old_len): New field.
(validate_change_1): Add a new_len parameter. Conditionally
replace the XVECLEN of an rtx, avoiding single-element PARALLELs.
(validate_change_xveclen): New function.
(cancel_changes): Undo changes made by validate_change_xveclen.
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One of the recurring warts of RTL is that multiplication by a power
of 2 is represented as a MULT inside a MEM but as an ASHIFT outside
a MEM. It would obviously be better if we didn't have this kind of
context sensitivity, but it would be difficult to remove.
Currently the simplify-rtx.c routines are hard-coded for the
ASHIFT form. This means that some callers have to convert the
ASHIFTs “back” into MULTs after calling the simplify-rtx.c
routines; see fwprop.c:canonicalize_address for an example.
I think we can relieve some of the pain by wrapping the simplify-rtx.c
routines in a simple class that tracks whether the expression occurs
in a MEM or not, so that no post-processing is needed.
An obvious concern is whether passing the “this” pointer around
will slow things down or bloat the code. I can't measure any
increase in compile time after applying the patch. Sizewise,
simplify-rtx.o text increases by 2.3% in default-checking builds
and 4.1% in release-checking builds.
I realise the MULT/ASHIFT thing isn't the most palatable
reason for doing this, but I think it might be useful for
other things in future, such as using local nonzero_bits
hooks/virtual functions instead of the global hooks.
The obvious alternative would be to add a static variable
and hope that it is always updated correctly.
Later patches make use of this.
gcc/
* rtl.h (simplify_context): New class.
(simplify_unary_operation, simplify_binary_operation): Use it.
(simplify_ternary_operation, simplify_relational_operation): Likewise.
(simplify_subreg, simplify_gen_unary, simplify_gen_binary): Likewise.
(simplify_gen_ternary, simplify_gen_relational): Likewise.
(simplify_gen_subreg, lowpart_subreg): Likewise.
* simplify-rtx.c (simplify_gen_binary): Turn into a member function
of simplify_context.
(simplify_gen_unary, simplify_gen_ternary, simplify_gen_relational)
(simplify_truncation, simplify_unary_operation): Likewise.
(simplify_unary_operation_1, simplify_byte_swapping_operation)
(simplify_associative_operation, simplify_logical_relational_operation)
(simplify_binary_operation, simplify_binary_operation_series)
(simplify_distributive_operation, simplify_plus_minus): Likewise.
(simplify_relational_operation, simplify_relational_operation_1)
(simplify_cond_clz_ctz, simplify_merge_mask): Likewise.
(simplify_ternary_operation, simplify_subreg, simplify_gen_subreg)
(lowpart_subreg): Likewise.
(simplify_binary_operation_1): Likewise. Test mem_depth when
deciding whether the ASHIFT or MULT form is canonical.
(simplify_merge_mask): Use simplify_context.
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verify_changes has a test for whether a particular hard register
is a user-defined register asm. A later patch needs to test the
same thing, so this patch splits it out into a helper.
gcc/
* rtl.h (register_asm_p): Declare.
* recog.c (verify_changes): Split out the test for whether
a hard register is a register asm to...
* rtlanal.c (register_asm_p): ...this new function.
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Later patches want to use print_insn_with_notes (printing to
a pretty_printer). This patch exports it from print-rtl.c.
The non-notes version is already public.
gcc/
* print-rtl.h (print_insn_with_notes): Declare.
* print-rtl.c (print_insn_with_notes): Make non-static
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Later patches want to reuse combine's update_cfg_for_uncondjump,
so this patch makes it a public cfgrtl.c function.
gcc/
* cfgrtl.h (update_cfg_for_uncondjump): Declare.
* combine.c (update_cfg_for_uncondjump): Move to...
* cfgrtl.c: ...here.
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A later patch wants to be able to pass around subarray views of an
existing array. The standard class to do that is std::span, but it's
a C++20 thing. This patch just adds a cut-down version of it.
The intention is just to provide what's currently needed.
gcc/
* vec.h (array_slice): New class.
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We already have two splay tree implementations: the old C one in
libiberty and a templated reimplementation of it in typed-splay-tree.h.
However, they have some drawbacks:
- They hard-code the assumption that nodes should have both a key and
a value, which isn't always true.
- They use the two-phase method of lookup, and so nodes need to store
a temporary back pointer. We can avoid that overhead by using the
top-down method (as e.g. the bitmap tree code already does).
- The tree node has to own the key and the value. For some use cases
it's more convenient to embed the tree links in the value instead.
Also, a later patch wants to use splay trees to represent an
adaptive total order: the splay tree itself records whether node N1
is less than node N2, and (in the worst case) comparing nodes is
a splay operation.
This patch therefore adds an alternative implementation. The main
features are:
- Nodes can optionally point back to their parents.
- An Accessors class abstracts accessing child nodes and (where
applicable) parent nodes, so that the information can be embedded
in larger data structures.
- There is no fixed comparison function at the class level. Instead,
individual functions that do comparisons take a comparison function
argument.
- There are two styles of comparison function, optimised for different
use cases. (See the comments in the patch for details.)
- It's possible to do some operations directly on a given node,
without knowing whether it's the root. This includes the comparison
use case described above.
This of course has its own set of drawbacks. It's really providing
splay utility functions rather than a true ADT, and so is more low-level
than the existing routines. It's mostly geared for cases in which the
client code wants to participate in the splay operations to some extent.
gcc/
* Makefile.in (OBJS): Add splay-tree-utils.o.
* system.h: Include <array> when INCLUDE_ARRAY is defined.
* selftest.h (splay_tree_cc_tests): Declare.
* selftest-run-tests.c (selftest::run_tests): Run splay_tree_cc_tests.
* splay-tree-utils.h: New file.
* splay-tree-utils.tcc: Likewise.
* splay-tree-utils.cc: Likewise.
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This patch adds a pointer_mux<T1, T2> class that provides similar
functionality to:
union { T1 *a; T2 *b; };
...
bool is_b_rather_than_a;
except that the is_b_rather_than_a tag is stored in the low bit
of the pointer. See the comments in the patch for a comparison
between the two approaches and why this one can be more efficient.
I've tried to microoptimise the class a fair bit, since a later
patch uses it extensively in order to keep the sizes of data
structures down.
gcc/
* mux-utils.h: New file.
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This patch adds an RAII class for managing the lifetimes of objects
on an obstack. See the comments in the patch for more details and
example usage.
gcc/
* obstack-utils.h: New file.
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This patch adds some more iterator helper classes. They really fall
into two groups, but there didn't seem much value in separating them:
- A later patch has a class hierarchy of the form:
Base
+- Derived1
+- Derived2
A class wants to store an array A1 of Derived1 pointers and an
array A2 of Derived2 pointers. However, for compactness reasons,
it was convenient to have a single array of Base pointers,
with A1 and A2 being slices of this array. This reduces the
overhead from two pointers and two ints (3 LP64 words) to one
pointer and two ints (2 LP64 words).
But consumers of the class shouldn't be aware of this: they should
see A1 as containing Derived1 pointers rather than Base pointers
and A2 as containing Derived2 pointers rather than Base pointers.
This patch adds derived_iterator and const_derived_container
classes to support this use case.
- A later patch also adds various linked lists. This patch adds
wrapper_iterator and list_iterator classes to make it easier
to create iterators for these linked lists. For example:
// Iterators for lists of definitions.
using def_iterator = list_iterator<def_info, &def_info::next_def>;
using reverse_def_iterator
= list_iterator<def_info, &def_info::prev_def>;
This in turn makes it possible to use range-based for loops
on the lists.
The patch just adds the things that the later patches need; it doesn't
try to make the classes as functionally complete as possible. I think
we should add extra functionality when needed rather than ahead of time.
gcc/
* iterator-utils.h (derived_iterator): New class.
(const_derived_container, wrapper_iterator): Likewise.
(list_iterator): Likewise.
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A later patch wants to use the set of global registers as a HARD_REG_SET
rather than a bool/char array. Most other arrays already have a
HARD_REG_SET counterpart, but this one didn't.
gcc/
* hard-reg-set.h (global_reg_set): Declare.
* reginfo.c (global_reg_set): New variable.
(init_reg_sets_1, globalize_reg): Update it when globalizing
registers.
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This adds support for the new __ieee128 long double format on
powerpc64le targets.
Most of the complexity comes from wanting a single libstdc++.so library
that contains the symbols needed by code compiled with both
-mabi=ibmlongdouble and -mabi=ieeelongdouble (and not forgetting
-mlong-double-64 as well!)
In a few places this just requires an extra overload, for example
std::from_chars has to be overloaded for both forms of long double.
That can be done in a single translation unit that defines overloads
for 'long double' and also '__ieee128', so that user code including
<charconv> will be able to link to a definition for either type of long
double. Those are the easy cases.
The difficult parts are (as for the std::string ABI transition) the I/O
and locale facets. In order to be able to write either form of long
double to an ostream such as std::cout we need the locale to contain a
std::num_put facet that can handle both forms. The same approach is
taken as was already done for supporting 64-bit long double and 128-bit
long double: adding extra overloads of do_put to the facet class. On
targets where the new long double code is enabled, the facets that are
registered in the locale at program startup have additional overloads so
that they can work with any long double type. Where this fails to work
is if user code installs its own facet, which will probably not have the
additional overloads and so will only be able to output one or the other
type. In practice the number of users expecting to be able to use their
own locale facets in code using a mix of -mabi=ibmlongdouble and
-mabi=ieeelongdouble is probably close to zero.
libstdc++-v3/ChangeLog:
* Makefile.in: Regenerate.
* config.h.in: Regenerate.
* config/abi/pre/gnu.ver: Make patterns less greedy.
* config/os/gnu-linux/ldbl-ieee128-extra.ver: New file with patterns
for IEEE128 long double symbols.
* configure: Regenerate.
* configure.ac: Enable alternative 128-bit long double format on
powerpc64*-*-linux*.
* doc/Makefile.in: Regenerate.
* fragment.am: Regenerate.
* include/Makefile.am: Set _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define inline namespace for new long
double symbols. Don't define _GLIBCXX_USE_FLOAT128 when it's the
same type as long double.
* include/bits/locale_classes.h [_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT]
(locale::_Impl::_M_init_extra_ldbl128): Declare new member function.
* include/bits/locale_facets.h (_GLIBCXX_NUM_FACETS): Simplify by
only counting narrow character facets.
(_GLIBCXX_NUM_CXX11_FACETS): Likewise.
(_GLIBCXX_NUM_LBDL_ALT128_FACETS): New.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT] (num_get::__do_get): Define
vtable placeholder for __ibm128 long double type.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(num_get::__do_get): Declare vtable placeholder for __ibm128 long
double type.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(num_put::__do_put): Likewise.
* include/bits/locale_facets.tcc
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(num_get::__do_get, num_put::__do_put): Define.
* include/bits/locale_facets_nonio.h
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(money_get::__do_get): Declare vtable placeholder for __ibm128 long
double type.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(money_put::__do_put): Likewise.
* include/bits/locale_facets_nonio.tcc
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(money_get::__do_get, money_put::__do_put): Define.
* include/ext/numeric_traits.h [_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT]
(__numeric_traits<__ibm128>, __numeric_traits<__ieee128>): Define.
* libsupc++/Makefile.in: Regenerate.
* po/Makefile.in: Regenerate.
* python/Makefile.in: Regenerate.
* src/Makefile.am: Add compatibility-ldbl-alt128.cc and
compatibility-ldbl-alt128-cxx11.cc sources and recipes for objects.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.in: Regenerate.
* src/c++11/compatibility-ldbl-alt128-cxx11.cc: New file defining
symbols using the old 128-bit long double format, for the cxx11 ABI.
* src/c++11/compatibility-ldbl-alt128.cc: Likewise, for the
gcc4-compatible ABI.
* src/c++11/compatibility-ldbl-facets-aliases.h: New header for long
double compat aliases.
* src/c++11/cow-locale_init.cc: Add comment.
* src/c++11/cxx11-locale-inst.cc: Define C and C_is_char
unconditionally.
* src/c++11/cxx11-wlocale-inst.cc: Add sanity check. Include
locale-inst.cc directly, not via cxx11-locale-inst.cc.
* src/c++11/locale-inst-monetary.h: New header for monetary
category instantiations.
* src/c++11/locale-inst-numeric.h: New header for numeric category
instantiations.
* src/c++11/locale-inst.cc: Include new headers for monetary,
numeric, and long double definitions.
* src/c++11/wlocale-inst.cc: Remove long double compat aliases that
are defined in new header now.
* src/c++17/Makefile.am: Use -mabi=ibmlongdouble for
floating_from_chars.cc.
* src/c++17/Makefile.in: Regenerate.
* src/c++17/floating_from_chars.cc (from_chars_impl): Add
if-constexpr branch for __ieee128.
(from_chars): Overload for __ieee128.
* src/c++20/Makefile.in: Regenerate.
* src/c++98/Makefile.in: Regenerate.
* src/c++98/locale_init.cc (num_facets): Adjust calculation.
(locale::_Impl::_Impl(size_t)): Call _M_init_extra_ldbl128.
* src/c++98/localename.cc (num_facets): Adjust calculation.
(locale::_Impl::_Impl(const char*, size_t)): Call
_M_init_extra_ldbl128.
* src/filesystem/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
* testsuite/util/testsuite_abi.cc: Add new symbol versions.
Allow new symbols to be added to GLIBCXX_IEEE128_3.4.29 and
CXXABI_IEEE128_1.3.13 too.
* testsuite/26_numerics/complex/abi_tag.cc: Add u9__ieee128 to
regex matching expected symbols.
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possible
> https://gcc.gnu.org/pipermail/gccadmin/2020q4/017037.html
>
> OSError: [Errno 28] No space left on device:
> '/tmp/tmp.Zq3p6D4MxS/gcc/.git/objects/objn31xpefh' ->
> '/tmp/tmp.Zq3p6D4MxS/gcc/.git/objects/db/ffb02a4bcdd4ec04af3db75d86b8cc2e52bdff'
>
> Maybe change the script to use /sourceware/snapshot-tmp/gcc (which has
> rather more space) instead of /tmp?
This patch implements that.
2020-12-17 Jakub Jelinek <jakub@redhat.com>
* update_version_git: Put BASEDIR into /sourceware/snapshot-tmp/gcc
if it exist.
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This implements support for powerpc64le architecture on FreeBSD. Since
we don't have powerpcle (32-bit), I did not add support for powerpcle
here. This remains to be changed if there is powerpcle support in the
future.
2020-12-15 Piotr Kubaj <pkubaj@FreeBSD.org>
gcc/
* config.gcc (powerpc*le-*-freebsd*): Add.
* configure.ac (powerpc*le-*-freebsd*): Ditto.
* configure: Regenerate.
* config/rs6000/freebsd64.h (ASM_SPEC_COMMON): Use ENDIAN_SELECT.
(DEFAULT_ASM_ENDIAN): Add little endian support.
(LINK_OS_FREEBSD_SPEC64): Ditto.
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ISO C17 6.5.15.1 specifies that the result is the
type the LHS would have after lvalue conversion.
2020-12-16 Martin Uecker <muecker@gwdg.de>
gcc/c/
PR c/98047
* c-typeck.c (build_modify_expr): Drop qualifiers.
gcc/testsuite/
PR c/98047
* gcc.dg/qual-assign-7.c: New test.
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2020-12-16 Martin Uecker <muecker@gwdg.de>
gcc/c/
PR c/98260
* c-parser.c (c_parser_expression): Look into
nop expression when marking expressions as read.
gcc/testsuite/
PR c/98260
* gcc.dg/unused-9.c: New test.
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2020-12-16 Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp>
gcc/
* config/xtensa/xtensa.c (xtensa_emit_move_sequence): Try to
replace 'l32r' with 'movi' + 'slli' when optimizing for size.
* config/xtensa/xtensa.md (movdi): Split loading DI mode constant
into register pair into two loads of SI mode constants.
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This refactors the complex numbers bits of MVE to go through the same unspecs
as the NEON variant.
This is pre-work to allow code to be shared between NEON and MVE for the complex
vectorization patches.
gcc/ChangeLog:
* config/arm/arm_mve.h (__arm_vcmulq_rot90_f16):
(__arm_vcmulq_rot270_f16, _arm_vcmulq_rot180_f16, __arm_vcmulq_f16,
__arm_vcmulq_rot90_f32, __arm_vcmulq_rot270_f32,
__arm_vcmulq_rot180_f32, __arm_vcmulq_f32, __arm_vcmlaq_f16,
__arm_vcmlaq_rot180_f16, __arm_vcmlaq_rot270_f16,
__arm_vcmlaq_rot90_f16, __arm_vcmlaq_f32, __arm_vcmlaq_rot180_f32,
__arm_vcmlaq_rot270_f32, __arm_vcmlaq_rot90_f32): Update builtin calls.
* config/arm/arm_mve_builtins.def (vcmulq_f, vcmulq_rot90_f,
vcmulq_rot180_f, vcmulq_rot270_f, vcmlaq_f, vcmlaq_rot90_f,
vcmlaq_rot180_f, vcmlaq_rot270_f): Removed.
(vcmulq, vcmulq_rot90, vcmulq_rot180, vcmulq_rot270, vcmlaq,
vcmlaq_rot90, vcmlaq_rot180, vcmlaq_rot270): New.
* config/arm/iterators.md (mve_rot): Add UNSPEC_VCMLA, UNSPEC_VCMLA90,
UNSPEC_VCMLA180, UNSPEC_VCMLA270, UNSPEC_VCMUL, UNSPEC_VCMUL90,
UNSPEC_VCMUL180, UNSPEC_VCMUL270.
(VCMUL): New.
* config/arm/mve.md (mve_vcmulq_f<mode, mve_vcmulq_rot180_f<mode>,
mve_vcmulq_rot270_f<mode>, mve_vcmulq_rot90_f<mode>, mve_vcmlaq_f<mode>,
mve_vcmlaq_rot180_f<mode>, mve_vcmlaq_rot270_f<mode>,
mve_vcmlaq_rot90_f<mode>): Removed.
(mve_vcmlaq<mve_rot><mode>, mve_vcmulq<mve_rot><mode>,
mve_vcaddq<mve_rot><mode>, cadd<rot><mode>3, mve_vcaddq<mve_rot><mode>):
New.
* config/arm/unspecs.md (UNSPEC_VCMUL90, UNSPEC_VCMUL270, UNSPEC_VCMUL,
UNSPEC_VCMUL180): New.
(VCMULQ_F, VCMULQ_ROT180_F, VCMULQ_ROT270_F, VCMULQ_ROT90_F,
VCMLAQ_F, VCMLAQ_ROT180_F, VCMLAQ_ROT90_F, VCMLAQ_ROT270_F): Removed.
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This adds implementation for the optabs for complex additions. With this the
following C code:
void f90 (float complex a[restrict N], float complex b[restrict N],
float complex c[restrict N])
{
for (int i=0; i < N; i++)
c[i] = a[i] + (b[i] * I);
}
generates
f90:
add r3, r2, #1600
.L2:
vld1.32 {q8}, [r0]!
vld1.32 {q9}, [r1]!
vcadd.f32 q8, q8, q9, #90
vst1.32 {q8}, [r2]!
cmp r3, r2
bne .L2
bx lr
instead of
f90:
add r3, r2, #1600
.L2:
vld2.32 {d24-d27}, [r0]!
vld2.32 {d20-d23}, [r1]!
vsub.f32 q8, q12, q11
vadd.f32 q9, q13, q10
vst2.32 {d16-d19}, [r2]!
cmp r3, r2
bne .L2
bx lr
gcc/ChangeLog:
* config/arm/arm_mve.h (__arm_vcaddq_rot90_u8, __arm_vcaddq_rot270_u8,
__arm_vcaddq_rot90_s8, __arm_vcaddq_rot270_s8,
__arm_vcaddq_rot90_u16, __arm_vcaddq_rot270_u16,
__arm_vcaddq_rot90_s16, __arm_vcaddq_rot270_s16,
__arm_vcaddq_rot90_u32, __arm_vcaddq_rot270_u32,
__arm_vcaddq_rot90_s32, __arm_vcaddq_rot270_s32,
__arm_vcaddq_rot90_f16, __arm_vcaddq_rot270_f16,
__arm_vcaddq_rot90_f32, __arm_vcaddq_rot270_f32): Update builtin calls.
* config/arm/arm_mve_builtins.def (vcaddq_rot90_u, vcaddq_rot270_u,
vcaddq_rot90_s, vcaddq_rot270_s, vcaddq_rot90_f, vcaddq_rot270_f):
Removed.
(vcaddq_rot90, vcaddq_rot270): New.
* config/arm/constraints.md (Dz): Include MVE.
* config/arm/iterators.md (mve_rot): New.
(supf): Remove VCADDQ_ROT270_S, VCADDQ_ROT270_U, VCADDQ_ROT90_S,
VCADDQ_ROT90_U.
(VCADDQ_ROT270, VCADDQ_ROT90): Removed.
* config/arm/mve.md (mve_vcaddq_rot270_<supf><mode,
mve_vcaddq_rot90_<supf><mode>, mve_vcaddq_rot270_f<mode>,
mve_vcaddq_rot90_f<mode>): Removed.
(mve_vcaddq<mve_rot><mode>, mve_vcaddq<mve_rot><mode>): New.
* config/arm/unspecs.md (VCADDQ_ROT270_S, VCADDQ_ROT90_S,
VCADDQ_ROT270_U, VCADDQ_ROT90_U, VCADDQ_ROT270_F,
VCADDQ_ROT90_F): Removed.
* config/arm/vec-common.md (cadd<rot><mode>3): New.
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This adds implementation for the optabs for add complex operations. With this
the following C code:
void f90 (float complex a[restrict N], float complex b[restrict N],
float complex c[restrict N])
{
for (int i=0; i < N; i++)
c[i] = a[i] + (b[i] * I);
}
generates
f90:
mov x3, 0
.p2align 3,,7
.L2:
ldr q0, [x0, x3]
ldr q1, [x1, x3]
fcadd v0.4s, v0.4s, v1.4s, #90
str q0, [x2, x3]
add x3, x3, 16
cmp x3, 1600
bne .L2
ret
instead of
f90:
add x3, x1, 1600
.p2align 3,,7
.L2:
ld2 {v4.4s - v5.4s}, [x0], 32
ld2 {v2.4s - v3.4s}, [x1], 32
fsub v0.4s, v4.4s, v3.4s
fadd v1.4s, v5.4s, v2.4s
st2 {v0.4s - v1.4s}, [x2], 32
cmp x3, x1
bne .L2
ret
gcc/ChangeLog:
* config/aarch64/aarch64-simd.md (cadd<rot><mode>3): New.
* config/aarch64/iterators.md (SVE2_INT_CADD_OP): New.
* config/aarch64/aarch64-sve.md (cadd<rot><mode>3): New.
* config/aarch64/aarch64-sve2.md (cadd<rot><mode>3): New.
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gcc/fortran/ChangeLog:
PR fortran/90207
* invoke.texi: Document -fdebug-aux-vars.
* lang.opt: Add -fdebug-aux-vars.
* trans.c (MAX_PREFIX_LEN): New macro.
(create_var_debug_raw): New function.
(gfc_create_var_np): Call create_var_debug_raw if
flag_debug_aux_vars is set.
(cherry picked from commit 662de36bf798c8c470b382015283fe3a439cdd8f)
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gcc/fortran/ChangeLog:
* dump-parse-tree.c (show_array_ref): Also show coarrays.
(debug): Implement for array reference.
(cherry picked from commit 501f470267445e037614649639d17a1b32b4a9aa)
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commit r11-5958 changed the code generation for the vector logical fold
tests. This patch updates the expected instruction counts for different
instructions.
gcc/testsuite/ChangeLog:
2020-12-16 David Edelsohn <dje.gcc@gmail.com>
PR target/98280
* gcc.target/powerpc/fold-vec-logical-ors-char.c: Adjust count.
* gcc.target/powerpc/fold-vec-logical-ors-int.c: Adjust count.
* gcc.target/powerpc/fold-vec-logical-ors-longlong.c: Adjust count.
* gcc.target/powerpc/fold-vec-logical-ors-short.c: Adjust count.
* gcc.target/powerpc/fold-vec-logical-other-char.c: Adjust count.
* gcc.target/powerpc/fold-vec-logical-other-int.c: Adjust count.
* gcc.target/powerpc/fold-vec-logical-other-longlong.c: Adjust count.
* gcc.target/powerpc/fold-vec-logical-other-short.c: Adjust count.
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gcc/fortran/ChangeLog:
* dependency.c: Add options.h header.
(gfc_full_array_ref_p): Coarrays only are full if the have DIMEN_STAR.
* trans-array.c (cas_add_strides): Remove.
(cas_add_this_image_offset): Reorganize.
(cas_impl_this_image_ref): Fix return for reference.
(gfc_conv_ss_descriptor): Fix handling of offset.
(gfc_conv_array_ref): Likewise.
(gfc_trans_preloop_setup): Use effective dimension.
(gfc_conv_section_startstride): Shared coarrays should be handled
like deferred arrays.
(gfc_get_dataptr_offset): Adjust call to cas_add_this_image_offset.
(gfc_conv_expr_descriptor): Adjust dimensions.
(gfc_walk_array_ref): Likewise.
* trans-types.c (gfc_sym_type): Handle shared coarrays like
allocatable arrays.
(gfc_get_derived_type): Likewise.
gcc/testsuite/ChangeLog:
* gfortran.dg/caf-shared/lower_cobound_1.f90: New test.
* gfortran.dg/caf-shared/whole_array_1.f90: New test.
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Rather than early-include sys/socket.h, let's allow the includer to
tell cody no networking.
libcody/
* cody.hh: Allow user to set CODY_NETWORKING.
gcc/cp/
* mapper-resolver.cc: Remove early include of
sys/socket.h. Specify no CODY_NETWORKING instead.
* module.cc: Specify no CODY_NETWORKING.
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I think this is nonsense code, we seem to be naming an instantiation
of a template template parm. But this fixes the ICE. Perhaps we
should diagnose the issue earlier?
gcc/cp/
* parser.c (cp_parser_elaborated_type_specifier): Test
BOUND_TEMPLATE_TEMPLATE_PARM before checking for instantiation.
gcc/testsuite/
* g++.dg/template/pr98297.C: New.
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I'd missed an install-strip rule in c++tools. Here it is, cribbed
from gcc/ subdir.
c++tools/
* Makefile.in (INSTALL): Replace with ...
(INSTALL_PROGRAM): ... this.
(INSTALL_STRIP_PROGRAM): New.
(install-strip): New target.
(install): Use INSTALL_PROGRAM.
* configure.ac: Add INSTALL_PROGRAM.
* configure: Regenerated.
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