The check whether two blocks are in the same irreducible region
and thus post-dominance checks being unreliable was incomplete
since an irreducible region can contain reducible sub-regions but
if one block is in the irreducible part and one not the check
still doesn't work as expected.
2021-06-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/101151
* tree-ssa-sink.c (statement_sink_location): Expand irreducible
region check.
* gcc.dg/torture/pr101151.c: New testcase.
This moves the check for same operands after verifying we're
facing compatible calls.
2021-06-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/101158
* tree-vect-slp.c (vect_build_slp_tree_1): Move same operand
checking after checking for matching operation.
* gfortran.dg/pr101158.f90: New testcase.
This fixes a missing check for a NULL vectype in the new popcount
pattern.
2021-06-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/101159
* tree-vect-patterns.c (vect_recog_popcount_pattern): Add
missing NULL vectype check.
This fixes an out-of-bound access of matches.
2021-06-22 Richard Biener <rguenther@suse.de>
PR tree-optimization/101154
* tree-vect-slp.c (vect_build_slp_tree_2): Fix out-of-bound access.
The patch remove those pro- and demotions when backend support direct
optab.
For i386: it enables vectorization for vpopcntb/vpopcntw and optimized
for vpopcntq.
gcc/ChangeLog:
PR tree-optimization/97770
* tree-vect-patterns.c (vect_recog_popcount_pattern):
New.
(vect_recog_func vect_vect_recog_func_ptrs): Add new pattern.
gcc/testsuite/ChangeLog:
PR tree-optimization/97770
* gcc.target/i386/avx512bitalg-pr97770-1.c: Remove xfail.
* gcc.target/i386/avx512vpopcntdq-pr97770-1.c: Remove xfail.
gcc/ChangeLog:
PR target/100267
* config/i386/i386-builtin.def (BDESC): Adjust builtin name.
* config/i386/sse.md (<avx512>_expand<mode>_mask): Rename to ..
(expand<mode>_mask): this ..
(*expand<mode>_mask): New pre_reload splitter to transform
v{,p}expand* to vmov* when mask is zero, all ones, or has all
ones in it's lower part, otherwise still generate
v{,p}expand*.
gcc/testsuite/ChangeLog:
PR target/100267
* gcc.target/i386/avx512bw-pr100267-1.c: New test.
* gcc.target/i386/avx512bw-pr100267-b-2.c: New test.
* gcc.target/i386/avx512bw-pr100267-d-2.c: New test.
* gcc.target/i386/avx512bw-pr100267-q-2.c: New test.
* gcc.target/i386/avx512bw-pr100267-w-2.c: New test.
* gcc.target/i386/avx512f-pr100267-1.c: New test.
* gcc.target/i386/avx512f-pr100267-pd-2.c: New test.
* gcc.target/i386/avx512f-pr100267-ps-2.c: New test.
* gcc.target/i386/avx512vl-pr100267-1.c: New test.
* gcc.target/i386/avx512vl-pr100267-pd-2.c: New test.
* gcc.target/i386/avx512vl-pr100267-ps-2.c: New test.
* gcc.target/i386/avx512vlbw-pr100267-1.c: New test.
* gcc.target/i386/avx512vlbw-pr100267-b-2.c: New test.
* gcc.target/i386/avx512vlbw-pr100267-d-2.c: New test.
* gcc.target/i386/avx512vlbw-pr100267-q-2.c: New test.
* gcc.target/i386/avx512vlbw-pr100267-w-2.c: New test.
The current std::lock algorithm is the one called "persistent" in Howard
Hinnant's https://howardhinnant.github.io/dining_philosophers.html post.
While it tends to perform acceptably fast, it wastes a lot of CPU cycles
by continuously locking and unlocking the uncontended mutexes.
Effectively, it's a spin lock with no back-off.
This replaces it with the one Howard calls "smart and polite". It's
smart, because when a Mi.try_lock() call fails because mutex Mi is
contended, the algorithm reorders the mutexes until Mi is first, then
calls Mi.lock(), to block until Mi is no longer contended. It's
polite because it uses std::this_thread::yield() between the failed
Mi.try_lock() call and the Mi.lock() call. (In reality it uses
__gthread_yield() directly, because using this_thread::yield() would
require shuffling code around to avoid a circular dependency.)
This version of the algorithm is inspired by some hints from Howard, so
that it has strictly bounded stack usage. As the comment in the code
says:
// This function can recurse up to N levels deep, for N = 1+sizeof...(L1).
// On each recursion the lockables are rotated left one position,
// e.g. depth 0: l0, l1, l2; depth 1: l1, l2, l0; depth 2: l2, l0, l1.
// When a call to l_i.try_lock() fails it recurses/returns to depth=i
// so that l_i is the first argument, and then blocks until l_i is locked.
The 'i' parameter is the desired permuation of the lockables, and the
'depth' parameter is the depth in the call stack of the current
instantiation of the function template. If i == depth then the function
calls l0.lock() and then l1.try_lock()... for each lockable in the
parameter pack l1. If i > depth then the function rotates the lockables
to the left one place, and calls itself again to go one level deeper.
Finally, if i < depth then the function returns to a shallower depth,
equivalent to a right rotate of the lockables. When a call to
try_lock() fails, i is set to the index of the contended lockable, so
that the next call to l0.lock() will use the contended lockable as l0.
This commit also replaces the std::try_lock implementation details. The
new code is identical in behaviour, but uses a pair of constrained
function templates. This avoids instantiating a class template, and is a
litle simpler to call where used in std::__detail::__lock_impl and
std::try_lock.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* include/std/mutex (__try_to_lock): Move to __detail namespace.
(struct __try_lock_impl): Replace with ...
(__detail::__try_lock_impl<Idx>(tuple<Lockables...>&)): New
function templates to implement std::try_lock.
(try_lock): Use new __try_lock_impl.
(__detail::__lock_impl(int, int&, L0&, L1&...)): New function
template to implement std::lock.
(lock): Use __lock_impl.
The x86_64 psABI says that an empty class isn't passed or returned in memory
or registers, so we shouldn't set %eax in this function.
The df-scan hunk catches the case where we look at a 0-length reg and build
a range the length of unsigned int, which happened before I changed
assign_parms to match expand_function_end.
PR target/88529
gcc/ChangeLog:
* df-scan.c (df_ref_record): Check that regno < endregno.
* function.c (assign_parms, expand_function_end): Do nothing with a
TYPE_EMPTY_P result.
gcc/testsuite/ChangeLog:
* g++.target/i386/empty-class1.C: New test.
r12-1606 bumped the value of __cpp_lib_ranges defined in <version>,
but this macro is also defined in <bits/range_cmp.h>, so it needs to
be updated there as well.
libstdc++-v3/ChangeLog:
* include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
Co-authored-by: Martin Sebor <msebor@redhat.com>
contrib/ChangeLog:
* mklog.py (bugzilla_url): Fetch also component.
(pr_filename_regex): New.
(get_pr_titles): Update PR string with correct format and component.
(generate_changelog): Take additional PRs; extract PR from the
filename.
(__main__): Add -b/--pr-numbers argument.
* test_mklog.py (EXPECTED4): Update to expect a PR for the new file.
This places two hacks to avoid an old compile-time issue when
vectorizing large permuted SLP groups with gaps where we end up
emitting loads and IV adjustments for the gap as well and those
have quite a high cost until they are eventually cleaned up.
The first hack is to fold the auto-inc style IV updates early
in the vectorizer rather than in the next forwprop pass which
shortens the SSA use-def chains of the used IV.
The second hack is to remove the unused loads after we've picked
all that we possibly use.
2021-06-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/101120
* tree-vect-data-refs.c (bump_vector_ptr): Fold the
built increment.
* tree-vect-slp.c (vect_transform_slp_perm_load): Add
DR chain DCE capability.
* tree-vectorizer.h (vect_transform_slp_perm_load): Adjust.
* tree-vect-stmts.c (vectorizable_load): Remove unused
loads in the DR chain for SLP.
Here, in C++14 or later, we remember the parentheses around 'a' in the
return statement by using a REF_PARENTHESIZED_P wrapper, which ends up
inhibiting NRVO because we don't look through this wrapper before
checking the conditions for NRVO. This patch fixes this by calling
maybe_undo_parenthesized_ref sooner in check_return_expr.
PR c++/67302
gcc/cp/ChangeLog:
* typeck.c (check_return_expr): Call maybe_undo_parenthesized_ref
sooner, before the NRVO handling.
gcc/testsuite/ChangeLog:
* g++.dg/opt/nrv21.C: New test.
The delayed processing of conversions to a virtual base in an NSDMI
assumes the target base type is a (possibly indirect) virtual base of
the current class, but the target base type could also be a base of a
virtual base, as in the testcase below. Since such a base isn't a part
of CLASSTYPE_VBASECLASSES, we end up miscompiling the testcase due to
the call to build_base_path (with binfo=NULL_TREE) silently returning
error_mark_node. Fix this by using convert_to_base to build the
conversion instead.
PR c++/80431
gcc/cp/ChangeLog:
* tree.c (bot_replace): Use convert_to_base to build the
conversion to the (morally) virtual base.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/nsdmi-virtual1a.C: New test.
Bitfields, while they live in memory, aren't something inline-asm can easily
operate on.
For C and "=m" or "+m", we were diagnosing bitfields in the past in the
FE, where c_mark_addressable had:
case COMPONENT_REF:
if (DECL_C_BIT_FIELD (TREE_OPERAND (x, 1)))
{
error
("cannot take address of bit-field %qD", TREE_OPERAND (x, 1));
return false;
}
but that check got moved in GCC 6 to build_unary_op instead and now we
emit an error during expansion and ICE afterwards (i.e. error-recovery).
For "m" it used to be diagnosed in c_mark_addressable too, but since
GCC 6 it is ice-on-invalid.
For C++, this was never diagnosed in the FE, but used to be diagnosed
in the gimplifier and/or during expansion before 4.8.
The following patch does multiple things:
1) diagnoses it in the FEs
2) stops emitting a redundant diagnostic in the gimplifier using the
usual way, if we already see error_mark_node, we assume error has
been emitted already and only diagnose if it wasn't error_mark_node;
this helps diagnosing the same bug with multiple different
errors
3) simplifies during expansion the inline asm if any errors have been
reported (similarly how e.g. vregs pass if it detects errors on
inline-asm either deletes them or simplifies to bare minimum -
just labels), so that we don't have error-recovery ICEs there
2021-06-11 Jakub Jelinek <jakub@redhat.com>
PR inline-asm/100785
gcc/
* gimplify.c (gimplify_asm_expr): Don't diagnose errors if
output or input operands were already error_mark_node.
* cfgexpand.c (expand_asm_stmt): If errors are emitted,
remove all inputs, outputs and clobbers from the asm and
set template to "".
gcc/c/
* c-typeck.c (c_mark_addressable): Diagnose trying to make
bit-fields addressable.
gcc/cp/
* typeck.c (cxx_mark_addressable): Diagnose trying to make
bit-fields addressable.
gcc/testsuite/
* c-c++-common/pr100785.c: New test.
* gcc.dg/pr48552-1.c: Don't expect invalid lvalue errors.
* gcc.dg/pr48552-2.c: Likewise.
gcc/ada/
* checks.adb (Selected_Range_Checks): In the case of a
qualified_expression where the qualifying subtype is an
unconstrained array subtype with fixed lower bounds for some of
its indexes, generate tests to check that those bounds are equal
to the corresponding lower bounds of the qualified array object.
gcc/ada/
* doc/gnat_rm/implementation_defined_pragmas.rst: Document new
feature under pragma Extensions_Allowed.
* gnat_rm.texi: Regenerate.
* errout.adb, errout.ads (Error_Msg_GNAT_Extension): Created to
issue errors when parsing extension only constructs.
* exp_ch11.adb, exp_ch11.ads (Expand_N_Raise_When_Statement):
Created to expand raise ... when constucts.
* exp_ch5.adb, exp_ch5.ads (Expand_N_Goto_When_Statement):
Created to expand goto ... when constructs.
* exp_ch6.adb, exp_ch6.ads (Expand_N_Return_When_Statement):
Created to expand return ... when constructs.
* expander.adb (Expand): Add case entries for "when" constructs.
* gen_il-gen-gen_nodes.adb, gen_il-types.ads: Add entries for
"when" constructs.
* par-ch11.adb (P_Raise_Statement): Add processing for raise ...
when.
* par-ch5.adb (Missing_Semicolon_On_Exit): Renamed to
Missing_Semicolon_On_When and moved to par-util.adb.
* par-ch6.adb (Get_Return_Kind): Renamed from Is_Simple and
processing added for "return ... when" return kind.
(Is_Simple): Renamed to Get_Return_Kind.
(P_Return_Statement): Add case for return ... when variant of
return statement.
* par-util.adb, par.adb (Missing_Semicolon_On_When): Added to
centeralize parsing of "when" keywords in the context of "when"
constructs.
* sem.adb (Analyze): Add case for "when" constructs.
* sem_ch11.adb, sem_ch11.ads (Analyze_Raise_When_Statement):
Created to analyze raise ... when constructs.
* sem_ch5.adb, sem_ch5.ads (Analyzed_Goto_When_Statement):
Created to analyze goto ... when constructs.
* sem_ch6.adb, sem_ch6.ads (Analyze_Return_When_Statement):
Created to analyze return ... when constructs.
* sprint.adb (Sprint_Node_Actual): Add entries for new "when"
nodes.
gcc/ada/
* Make-generated.in (GEN_IL_FLAGS): Keep only GNAT flags.
(ada/stamp-gen_il): Remove dependencies on libgnat/ sources. Do not
copy libgnat/ sources locally and tidy up.
* Makefile.rtl: Include object files for new Text_Buffer units
in the GNATRTL_NONTASKING_OBJS list.
* exp_put_image.ads, exp_put_image.adb: Update Rtsfind calls to
match new specs. For example, calls to RE_Sink are replaced with
calls to RE_Root_Buffer_Type. Update comments and change
subprogram names accordingly (e.g., Preload_Sink is changed to
Preload_Root_Buffer_Type).
* impunit.adb: Add 6 new predefined units (Text_Buffers and 5
child units thereof).
* rtsfind.ads, rtsfind.adb: Add interfaces for accessing the
Ada.Strings.Text_Buffers package and declarations
therein (including the Unbounded child unit). Do not (yet)
delete interfaces for accessing the old Text_Output package.
* sem_attr.adb (Check_Put_Image_Attribute): Replace RE_Sink uses
with RE_Root_Buffer_Type and update comments accordingly.
* sem_ch10.adb (Analyze_Compilation_Unit): Update call to
reflect name change of callee (that is, the former Preload_Sink
is now Preload_Root_Buffer_Type).
* sem_ch13.adb (Has_Good_Profile): Replace RE_Sink use with
RE_Root_Buffer_Type.
(Build_Spec): Update comment describing a parameter type.
* gen_il.ads: Remove clauses for the old Text_Output package and
add them for Ada.Streams.Stream_IO.
(Sink): Declare.
(Create_File): Likewise.
(Increase_Indent): Likewise.
(Decrease_Indent): Likewise.
(Put): Likewise.
(LF): Likewise.
* gen_il.adb: Add clauses for Ada.Streams.Stream_IO.
(Create_File): New procedure.
(Increase_Indent): Likewise.
(Decrease_Indent): Likewise.
(Put): New procedures.
* gen_il-gen.adb: Add clauses for Ada.Text_IO. Replace
Sink'Class with Sink throughout. Use string concatenation and
LF marker instead of formatted strings and "\n" marker. Update
Indent/Outdent calls to use new Increase_Indent/Decrease_Indent
names.
(Put_Membership_Query_Decl): Remove.
* gen_il-internals.ads: Replace Sink'Class with Sink throughout.
(Ptypes): Remove.
(Pfields): Likewise.
* gen_il-internals.adb: Remove clauses for GNAT.OS_Lib and
Ada.Strings.Text_Buffers.Files. Replace Sink'Class with Sink
throughout. Use string concatenation and LF marker instead of
formatted strings and "\n" marker.
(Stdout): Remove.
(Ptypes): Likewise.
(Pfields): Likewise.
* libgnarl/s-putaim.ads: Modify context clause, update
declaration of subtype Sink to refer to
Text_Buffers.Root_Buffer_Type instead of the old
Text_Output.Sink type.
* libgnarl/s-putaim.adb: Modify context clause and add use
clause to refer to Text_Buffers package.
* libgnat/a-cbdlli.ads, libgnat/a-cbdlli.adb,
libgnat/a-cbhama.ads, libgnat/a-cbhama.adb,
libgnat/a-cbhase.ads, libgnat/a-cbhase.adb,
libgnat/a-cbmutr.ads, libgnat/a-cbmutr.adb,
libgnat/a-cborma.ads, libgnat/a-cborma.adb,
libgnat/a-cborse.ads, libgnat/a-cborse.adb,
libgnat/a-cdlili.ads, libgnat/a-cdlili.adb,
libgnat/a-cidlli.ads, libgnat/a-cidlli.adb,
libgnat/a-cihama.ads, libgnat/a-cihama.adb,
libgnat/a-cihase.ads, libgnat/a-cihase.adb,
libgnat/a-cimutr.ads, libgnat/a-cimutr.adb,
libgnat/a-ciorma.ads, libgnat/a-ciorma.adb,
libgnat/a-ciormu.ads, libgnat/a-ciormu.adb,
libgnat/a-ciorse.ads, libgnat/a-ciorse.adb,
libgnat/a-coboho.ads, libgnat/a-coboho.adb,
libgnat/a-cobove.ads, libgnat/a-cobove.adb,
libgnat/a-cohama.ads, libgnat/a-cohama.adb,
libgnat/a-cohase.ads, libgnat/a-cohase.adb,
libgnat/a-coinho.ads, libgnat/a-coinho.adb,
libgnat/a-coinho__shared.ads, libgnat/a-coinho__shared.adb,
libgnat/a-coinve.ads, libgnat/a-coinve.adb,
libgnat/a-comutr.ads, libgnat/a-comutr.adb,
libgnat/a-convec.ads, libgnat/a-convec.adb,
libgnat/a-coorma.ads, libgnat/a-coorma.adb,
libgnat/a-coormu.ads, libgnat/a-coormu.adb,
libgnat/a-coorse.ads, libgnat/a-coorse.adb,
libgnat/a-nbnbin.ads, libgnat/a-nbnbin.adb,
libgnat/a-nbnbin__gmp.adb, libgnat/a-nbnbre.ads,
libgnat/a-nbnbre.adb, libgnat/a-strunb.ads,
libgnat/a-strunb.adb, libgnat/a-strunb__shared.ads,
libgnat/a-strunb__shared.adb, libgnat/s-rannum.ads,
libgnat/s-rannum.adb: Modify Put_Image procedure used in
Put_Image aspect specification to conform to Ada profile
rules (in particular, the first parameter shall be of type
Ada.Strings.Text_Buffers.Root_Buffer_Type'Class).
* libgnat/a-sttebu.ads, libgnat/a-sttebu.adb,
libgnat/a-stbubo.ads, libgnat/a-stbubo.adb,
libgnat/a-stbufi.ads, libgnat/a-stbufi.adb,
libgnat/a-stbufo.ads, libgnat/a-stbufo.adb,
libgnat/a-stbuun.ads, libgnat/a-stbuun.adb,
libgnat/a-stbuut.ads, libgnat/a-stbuut.adb: A new predefined
unit, Ada.Strings.Text_Buffers, and five child units. Two of
the five are RM-defined: Bounded and Unbounded. The remaining
three are GNAT-defined: Files, Utils, and Formatting. The buffer
type corresponding to an output file, type Files.File_Buffer, is
simpler (and perhaps therefore slower) than its predecessor.
Caching similar to what was being done before could be added
later if that seems appropriate.
* libgnat/s-putima.ads: Modify context clause, update
declaration of subtype Sink to refer to
Text_Buffers.Root_Buffer_Type instead of the old
Text_Output.Sink type.
* libgnat/s-putima.adb: Modify context clause. Update
Indent/Outdent calls to use new Increase_Indent/Decrease_Indent
names; ditto for "Put_String => Put" name change.
* libgnat/a-stteou__bootstrap.ads: Delete.
gcc/ada/
* exp_ch5.adb (Expand_Assign_Array_Bitfield_Fast): If big-endian
ordering is in effect for the operands and they are small,
adjust the unchecked conversions done around them.
gcc/ada/
* einfo.ads (Return_Statement): Add documentation.
* exp_ch6.adb (Expand_N_Extended_Return_Statement): Set it.
* gen_il-fields.ads: Add it.
* gen_il-gen-gen_entities.adb: Add it.
gcc/ada/
* rtsfind.ads, libgnat/s-bitfie.ads, libgnat/s-bituti.adb,
libgnat/s-bituti.ads (Fast_Copy_Bitfield): New run-time library
function to copy bit fields faster than Copy_Bitfield. Cannot be
called with zero-size bit fields. Remove obsolete ??? comments
from s-bituti.adb; we already do "avoid calling this if
Forwards_OK is False".
* exp_ch5.adb (Expand_Assign_Array_Loop_Or_Bitfield,
Expand_Assign_Array_Bitfield_Fast): Generate calls to
Fast_Copy_Bitfield when appropriate.
* sem_util.adb, sem_util.ads (Get_Index_Bounds): Two new
functions for getting the index bounds. These are more
convenient than the procedure of the same name, because they can
be used to initialize constants.
gcc/ada/
* gen_il-fields.ads: Add Default_Subtype_Mark to enumeration
type for fields.
* gen_il-gen-gen_nodes.adb: Add call to create new field for
Formal_Type_Declaration node.
* par-ch12.adb (P_Formal_Type_Declaration): in Ada_2022 mode,
recognize new syntax for default: "or use subtype_mark".
(P_Formal_Type_Definition): Ditto for the case of a formal
incomplete type.
* sinfo.ads: Add field Default_Subtype_Mark to
N_Formal_Type_Declaration.
* sem_ch12.adb (Validate_Formal_Type_Default): New procedure, to
apply legality rules to default subtypes in formal type
declarations. Some legality rules apply to all defaults, such as
the requirement that the default for a formal type that depends
on previous formal entities must itself be a previously declared
formal of the same unit. Other checks are kind- specific.
(Analyze_Associations): Use specified default if there is no
actual provided for a formal type in an instance.
(Analyze_Formal_Type_Declaration): Call
Validate_Formal_Type_Default when default subtype is present.
gcc/ada/
* libgnat/s-valuen.ads, libgnat/s-valuen.adb
(Value_Enumeration_Pos): New function to compute the 'Pos of the
enumeration literal for a given String. Return a special value
instead of raising an exception on invalid input. Called by both
Valid_Enumeration_Image and Value_Enumeration.
(Valid_Enumeration_Image): Return a Boolean indicating whether
the String is a valid Image for the given enumeration type.
(Value_Enumeration): Implement in terms of
Value_Enumeration_Pos.
* libgnat/s-vaenu8.ads, libgnat/s-vaen16.ads,
libgnat/s-vaen32.ads: Rename Valid_Enumeration_Image from the
instances.
* libgnat/s-valuti.ads: Correct documentation (it was not true
for the null string).
* libgnat/s-valuti.adb (Normalize_String): Do not raise
Constraint_Error for the null string, nor strings containing
nothing but blanks, so that Valid_Enumeration_Image can return
False in these cases, rather than raising an exception.
* rtsfind.ads (RE_Value_Enumeration_8, RE_Value_Enumeration_16,
RE_Value_Enumeration_32): New functions.
(RTE_Available): Improve comment (E doesn't have to be a
subprogram, although that's the usual case).
* sem_attr.adb (nalid_Value): Semantic analysis for new
attribute.
* exp_attr.adb: Call Expand_Valid_Value_Attribute for new
attribute.
* exp_imgv.ads, exp_imgv.adb (Expand_Valid_Value_Attribute): New
procedure to expand Valid_Value into a call to
Valid_Enumeration_Image_NN.
(Expand_Value_Attribute): Misc code cleanups. Remove two ???
mark comments. RTE_Available won't work here. For one thing,
RTE_Available (X) shouldn't be called until the compiler has
decided to make use of X (see comments on RTE_Available), and in
this case we're trying to AVOID calling something.
* snames.ads-tmpl: New attribute name.
* doc/gnat_rm/implementation_defined_attributes.rst: Document
new attribute.
* gnat_rm.texi: Regenerate.
gcc/ada/
* urealp.ads (UR_Write_To_JSON): Declare.
* urealp.adb (Decimal_Exponent_Hi): Treat numbers in base 10
specially and rewrite handling of numbers in other bases.
(Decimal_Exponent_Lo): Likewise.
(Normalize): Minor tweak.
(UR_Write_To_JSON): New wrapper procedure around UR_Write.
* repinfo.adb (List_Type_Info): When the output is to JSON, call
UR_Write_To_JSON instead of UR_Write.
gcc/ada/
* exp_util.adb (Expand_Sliding_Conversion): Only perform
expansion when Expander_Active is True. Add a comment about this
and refine existing comment regarding string literals.
The following plugs another hole where we cache a failed SLP build
attempt with an all-success 'matches'. It also adds checking that
we don't do that.
2021-06-21 Richard Biener <rguenther@suse.de>
PR tree-optimization/101121
* tree-vect-slp.c (vect_build_slp_tree_2): To not fail fatally
when we just lack a stmt with the desired op when doing permutation.
(vect_build_slp_tree): When caching a failed SLP build attempt
assert that at least one lane is marked as not matching.
* gfortran.dg/pr101121.f: New testcase.
The avx512 supports bitwise operations with mask registers, but the
throughput of those instructions is much lower than that of the
corresponding gpr version, so we would additionally disparages
slightly the mask register alternative for bitwise operations in the
LRA.
Also when allocano cost of GENERAL_REGS is same as MASK_REGS, allocate
MASK_REGS first since it has already been disparaged.
gcc/ChangeLog:
PR target/101142
* config/i386/i386.md: (*anddi_1): Disparage slightly the mask
register alternative.
(*and<mode>_1): Ditto.
(*andqi_1): Ditto.
(*andn<mode>_1): Ditto.
(*<code><mode>_1): Ditto.
(*<code>qi_1): Ditto.
(*one_cmpl<mode>2_1): Ditto.
(*one_cmplsi2_1_zext): Ditto.
(*one_cmplqi2_1): Ditto.
* config/i386/i386.c (x86_order_regs_for_local_alloc): Change
the order of mask registers to be before general registers.
gcc/testsuite/ChangeLog:
PR target/101142
* gcc.target/i386/spill_to_mask-1.c: Adjust testcase.
* gcc.target/i386/spill_to_mask-2.c: Adjust testcase.
* gcc.target/i386/spill_to_mask-3.c: Adjust testcase.
* gcc.target/i386/spill_to_mask-4.c: Adjust testcase.
