Library code, especially in headers, sometimes needs to know how the
compiler interprets / optimizes floating-point types and operations.
This information can be used for additional optimizations or for
ensuring correctness. This change makes -freciprocal-math,
-fno-signed-zeros, -fno-trapping-math, -fassociative-math, and
-frounding-math report their state via corresponding pre-defined macros.
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
gcc/testsuite/ChangeLog:
* gcc.dg/associative-math-1.c: New test.
* gcc.dg/associative-math-2.c: New test.
* gcc.dg/no-signed-zeros-1.c: New test.
* gcc.dg/no-signed-zeros-2.c: New test.
* gcc.dg/no-trapping-math-1.c: New test.
* gcc.dg/no-trapping-math-2.c: New test.
* gcc.dg/reciprocal-math-1.c: New test.
* gcc.dg/reciprocal-math-2.c: New test.
* gcc.dg/rounding-math-1.c: New test.
* gcc.dg/rounding-math-2.c: New test.
gcc/c-family/ChangeLog:
* c-cppbuiltin.c (c_cpp_builtins_optimize_pragma): Define or
undefine __RECIPROCAL_MATH__, __NO_SIGNED_ZEROS__,
__NO_TRAPPING_MATH__, __ASSOCIATIVE_MATH__, and
__ROUNDING_MATH__ according to the new optimization flags.
gcc/ChangeLog:
* cppbuiltin.c (define_builtin_macros_for_compilation_flags):
Define __RECIPROCAL_MATH__, __NO_SIGNED_ZEROS__,
__NO_TRAPPING_MATH__, __ASSOCIATIVE_MATH__, and
__ROUNDING_MATH__ according to their corresponding flags.
* doc/cpp.texi: Document __RECIPROCAL_MATH__,
__NO_SIGNED_ZEROS__, __NO_TRAPPING_MATH__, __ASSOCIATIVE_MATH__,
and __ROUNDING_MATH__.
gcc/ada/
* inline.adb (Has_Excluded_Declaration): Remove redundant guard;
the guarded code will call First on a No_List, which is
well-defined and gives Empty.
gcc/ada/
* libgnat/a-calend.adb: Remove time_t, replace with OS_Time.
* libgnat/s-os_lib.ads: Fix comments regarding time_t conversion
functions to reflect the use of To_Ada in in Ada.Calendar
package body.
* sysdep.c (__gnat_localtime_tzoff): Use OS_Time instead of
time_t.
gcc/ada/
* einfo-utils.ads, einfo-utils.adb, fe.h, einfo.ads,
gen_il-fields.ads: Remove unused and no-longer-used routines.
Move related routines together. Rewrite incorrect
documentation, and documentation that will be incorrect when
e.g. Esize-related routines are fixed. Remove unused field
Normalized_Position_Max.
* cstand.adb, exp_pakd.adb, freeze.adb,
gen_il-gen-gen_entities.adb, itypes.adb, layout.adb,
sem_ch10.adb, sem_ch12.adb, sem_ch13.adb, sem_ch3.adb,
sem_ch7.adb, sem_ch8.adb, sem_ch9.adb, sem_prag.adb,
sem_util.adb, ttypes.ads: Update calls to routines removed from
or renamed in Einfo.Utils.
* uintp.ads (Upos): Fix this subtype, which was unintentionally
declared to include Uint_0.
gcc/ada/
* contracts.adb (Add_Contract_Item): Accept volatile-related
properties on constants.
(Analyze_Object_Contract): Check external properties on
constants; accept volatile constants.
(Check_Type_Or_Object_External_Properties): Replace "variable"
with "object" in error messages; replace Decl_Kind with a local
constant.
* sem_prag.adb (Analyze_Pragma): Accept volatile-related
properties on constants.
gcc/ada/
* libgnat/a-strfix.adb ("*"): Added loop invariants and lemmas
for proof.
(Delete): Added assertions for proof, and conditions to avoid
overflow.
(Head): Added loop invariant.
(Insert): Same as Delete.
(Move): Declared with SPARK_Mode Off.
(Overwrite): Added assertions for proof, and conditions to avoid
overflow.
(Replace_Slice): Added assertions for proof, and conditions to
avoid overflow.
(Tail): Added loop invariant and avoided overflows.
(Translate): Added loop invariants.
(Trim): Ensured empty strings returned start at 1.
* libgnat/a-strfix.ads (Index): Rewrote contract cases for
easier proof.
(Index_Non_Blank): Separated the null string case.
(Count): Specified Mapping shouldn't be null.
(Find_Token): Specified Source'First should be Positive when no
From is given.
(Translate): Specified Mapping shouldn't be null.
("*"): Rewrote postcondition for easier proof.
* libgnat/a-strsea.adb (Belongs): Added postcondition.
(Count): Rewrote loops and added loop invariants to avoid
overflows.
(Find_Token): Added loop invariants.
(Index): Rewrote loops to avoid overflows and added loop
invariants for proof.
(Index_Non_Blank): Added loop invariants.
(Is_Identity): New function isolated without SPARK_Mode.
* libgnat/a-strsea.ads: Fix starting comment as package is no
longer private.
(Match): Declared ghost expression function Match.
(Is_Identity): Described identity in the postcondition.
(Index, Index_Non_Blank, Count, Find_Token): Added contract from
a-strfix.ads.
gcc/ada/
* adaint.c (__gnat_get_executable_load_address): Add Win32 support.
* libgnat/s-objrea.ads (Get_Xcode_Bounds): Fix typo in comment.
(Object_File): Minor reformatting.
(ELF_Object_File): Uncomment predicate.
(PECOFF_Object_File): Likewise.
(XCOFF32_Object_File): Likewise.
* libgnat/s-objrea.adb: Minor reformatting throughout.
(Get_Load_Address): Implement for PE-COFF.
* libgnat/s-dwalin.ads: Remove clause for System.Storage_Elements
and use consistent wording in comments.
(Dwarf_Context): Set type of Low, High and Load_Address to Address.
* libgnat/s-dwalin.adb (Get_Load_Displacement): New function.
(Is_Inside): Call Get_Load_Displacement.
(Low_Address): Likewise.
(Open): Adjust to type change.
(Aranges_Lookup): Change type of Addr to Address.
(Read_Aranges_Entry): Likewise for Start and adjust.
(Enable_Cach): Adjust to type change.
(Symbolic_Address): Change type of Addr to Address.
(Symbolic_Traceback): Call Get_Load_Displacement.
gcc/ada/
* exp_util.ads (Force_Evaluation): Add formal parameter
Discr_Number, to indicate discriminant expression for which an
external name must be created.
(Remove_Side_Effects): Ditto.
* exp_util.adb (Force_Evaluation): Call Remove_Side_Effects with
added parameter.
(Remove_Side_Effects, Build_Temporary): If Discr_Number is
positive, create an external name with suffix DISCR and the
given discriminant number, analogous to what is done for
temporaries for array type bounds.
* sem_ch3.adb (Process_Discriminant_Expressions): If the
constraint is for an object or component declaration and the
corresponding entity may be visible in another unit, invoke
Force_Evaluation with the new parameter.
gcc/ada/
* exp_attr.adb (Expand_N_Attribute_Reference): Fold
Preelaborable_Initialization attribute in cases where it hasn't
been folded by the analyzer.
* exp_disp.adb (Original_View_In_Visible_Part): This function is
removed and moved to sem_util.adb.
* sem_attr.adb (Attribute_22): Add
Attribute_Preelaborable_Initialization as an Ada 2022 attribute.
(Analyze_Attribute, Attribute_Preelaborable_Initialization):
Check that the prefix of the attribute is either a formal
private or derived type, or a composite type declared within the
visible part of a package or generic package.
(Eval_Attribute): Perform folding of
Preelaborable_Initialization attribute based on
Has_Preelaborable_Initialization applied to the prefix type.
* sem_ch3.adb (Resolve_Aspects): Add specialized code for
Preelaborable_Initialization used at the end of a package
visible part for setting Known_To_Have_Preelab_Init on types
that are specified with True or that have a conjunction of one
or more P_I attributes applied to formal types.
* sem_ch7.adb (Analyze_Package_Specification): On call to
Has_Preelaborable_Initialization, pass True for new formal
Formal_Types_Have_Preelab_Init, so that error checking treats
subcomponents that are declared within types in generics as
having preelaborable initialization when the subcomponents are
of formal types.
* sem_ch13.adb (Analyze_Aspects_At_Freeze_Point): Add test for
P_I to prevent calling Make_Pragma_From_Boolean_Aspect, since
this aspect is handled specially and the
Known_To_Have_Preelab_Init flag will get set on types that have
the aspect by other means.
(Analyze_Aspect_Specifications.Analyze_One_Aspect): Add test for
Aspect_Preelaborable_Initialization for allowing the aspect to
be specified on formal type declarations.
(Is_Operational_Item): Treat Attribute_Put_Image as an
operational attribute. The need for this was encountered while
working on these changes.
* sem_util.ads (Has_Preelaborable_Initialization): Add
Formal_Types_Have_Preelab_Init as a new formal parameter that
defaults to False.
(Is_Conjunction_Of_Formal_Preelab_Init_Attributes): New
function.
(Original_View_In_Visible_Part): Moved here from exp_disp.adb,
so it can be called by Analyze_Attribute.
* sem_util.adb (Has_Preelaborable_Initialization): Return True
for formal private and derived types when new formal
Formal_Types_Have_Preelab_Init is True, and pass along the
Formal_Types_Have_Preelab_Init flag in the array component case.
(Check_Components): Pass along Formal_Types_Have_Preelab_Init
flag on call to Has_Preelaborable_Initialization.
(Is_Conjunction_Of_Formal_Preelab_Init_Attributes): New function
that returns True when passed an expression that includes one or
more attributes for Preelaborable_Initialization applied to
prefixes that denote formal types.
(Is_Formal_Preelab_Init_Attribute): New utility function nested
within Is_Conjunction_Of_Formal_Preelab_Init_Attributes that
determines whether a node is a P_I attribute applied to a
generic formal type.
(Original_View_In_Visible_Part): Moved here from exp_util.adb,
so it can be called by Analyze_Attribute.
* snames.ads-tmpl: Add note near the start of spec giving
details about what needs to be done when adding a name that
corresponds to both an attribute and a pragma. Delete existing
occurrence of Name_Preelaborable_Initialization, and add a note
comment in the list of Name_* constants at that place,
indicating that it's included in type Pragma_Id, etc., echoing
other such comments for names that are both an attribute and a
pragma. Insert Name_Preelaborable_Initialization in the
alphabetized set of Name_* constants corresponding to
attributes (between First_Attribute_Name and
Last_Attribute_Name).
(type Attribute_Id): Add new literal
Attribute_Preelaborable_Initialization.
(type Pragma_Id): Move Pragma_Preelaborable_Initialization from
its current position to the end of the type, in the special set
of pragma literals that have corresponding atttributes. Add to
accompanying comment, indicating that functions Get_Pragma_Id
and Is_Pragma_Name need to be updated when adding a pragma
literal to the special set.
* snames.adb-tmpl (Get_Pragma_Id): Add case alternative for
Pragma_Preelaborable_Initialization.
(Is_Pragma_Name): Add test for
Name_Preelaborable_Initialization.
gcc/ada/
* exp_ch7.adb (Expand_N_Package_Body): Replace
Build_And_Insert_Cuda_Initialization with Expand_CUDA_Package.
* gnat_cuda.adb (Expand_CUDA_Package): New procedure.
(Build_And_Insert_Cuda_Initialization): Make internal.
* gnat_cuda.ads (Expand_CUDA_Package): New procedure.
(Build_And_Insert_Cuda_Initialization): Remove from spec.
The following uses the SLP node vectype rather than the vectype
stored in the DR group.
2021-09-17 Richard Biener <rguenther@suse.de>
* tree-vect-stmts.c (vectorizable_load): Use the vectype
from the SLP node.
gcc/fortran/ChangeLog:
* gfortran.h (gfc_omp_clauses): Add order_unconstrained.
* dump-parse-tree.c (show_omp_clauses): Dump it.
* openmp.c (gfc_match_omp_clauses): Match unconstrained/reproducible
modifiers to ordered(concurrent).
(OMP_DISTRIBUTE_CLAUSES): Accept ordered clause.
(resolve_omp_clauses): Reject ordered + order on same directive.
* trans-openmp.c (gfc_trans_omp_clauses, gfc_split_omp_clauses): Pass
on unconstrained modifier of ordered(concurrent).
gcc/testsuite/ChangeLog:
* gfortran.dg/gomp/order-5.f90: New test.
* gfortran.dg/gomp/order-6.f90: New test.
* gfortran.dg/gomp/order-7.f90: New test.
* gfortran.dg/gomp/order-8.f90: New test.
* gfortran.dg/gomp/order-9.f90: New test.
This removes adjusting alignment based on the vectorized accesses
and instead keeps what was set on the original access. The
code generating the actual accesses make sure to properly align
the vectorized accesses based on the generated pointer already
and the vectorizers alignment is always based of the desired
alignment of a vector type and thus will reset alignment to
unknown this way for example when doing strided accesses.
2021-09-20 Richard Biener <rguenther@suse.de>
* tree-vect-data-refs.c (vect_duplicate_ssa_name_ptr_info):
Do not compute alignment of the vectorized access here.
This properly marks the loop as for a runtime alias peel rather
than (pointlessly) going through DR_MISALIGNMENT.
2021-09-20 Richard Biener <rguenther@suse.de>
* tree-vect-data-refs.c (vect_enhance_data_refs_alignment):
Store -1 for runtime alias peeling iterations.
This obsoletes the 32bit hppa-hpux configurations which only support
STABS as debuginfo format.
2021-09-20 Richard Biener <rguenther@suse.de>
gcc/
* config.gcc: Obsolete hppa[12]*-*-hpux10* and hppa[12]*-*-hpux11*.
contrib/
* config-list.mk: --enable-obsolete for hppa2.0-hpux10.1 and
hppa2.0-hpux11.9.
When running the testsuite under Windows, we noticed failures in
testcase which attempt to match compiler error messages containing the
name of the executable.
For instance, gcc.dg/analyzer/signal-4a.c tries to match 'cc1:' which
obviously fails when the executable is called cc1.exe.
This patch removes the .exe suffix from various toolchain executables
to avoid this problem.
2021-09-08 Christophe Lyon <christophe.lyon@foss.st.com>
Torbjörn SVENSSON <torbjorn.svensson@st.com>
gcc/testsuite/
* lib/prune.exp (prune_gcc_output): Remove .exe suffix from
toolchain executables names.
'RESERVED_LOCATION_P' means 'UNKNOWN_LOCATION' or 'BUILTINS_LOCATION'.
We're using 'UNKNOWN_LOCATION' as a spare value for 'Empty', so should
ascertain that we don't use it as a key additionally. Similarly for
'BUILTINS_LOCATION' that we'd later like to use as a spare value for
'Deleted'.
As discussed in the source code comment added, for these we didn't have
stable behavior anyway.
Follow-up to r239175 (commit 88fa5555a3)
"On-demand locations within string-literals".
gcc/
* input.c (string_concat_db::record_string_concatenation)
(string_concat_db::get_string_concatenation): Skip for
'RESERVED_LOCATION_P'.
gcc/testsuite/
* gcc.dg/plugin/diagnostic-test-string-literals-1.c: Adjust
expected error diagnostics.
This adds the capability to analyze the dependence of mixed
pointer/array accesses. The example is from where using a masked
load/store creates the pointer-based access when an otherwise
unconditional access is array based. Other examples would include
accesses to an array mixed with accesses from inlined helpers
that work on pointers.
The idea is quite simple and old - analyze the data-ref indices
as if the reference was pointer-based. The following change does
this by changing dr_analyze_indices to work on the indices
sub-structure and storing an alternate indices substructure in
each data reference. That alternate set of indices is analyzed
lazily by initialize_data_dependence_relation when it fails to
match-up the main set of indices of two data references.
initialize_data_dependence_relation is refactored into a head
and a tail worker and changed to work on one of the indices
structures and thus away from using DR_* access macros which
continue to reference the main indices substructure.
There are quite some vectorization and loop distribution opportunities
unleashed in SPEC CPU 2017, notably 520.omnetpp_r, 548.exchange2_r,
510.parest_r, 511.povray_r, 521.wrf_r, 526.blender_r, 527.cam4_r and
544.nab_r see amendments in what they report with -fopt-info-loop while
the rest of the specrate set sees no changes there. Measuring runtime
for the set where changes were reported reveals nothing off-noise
besides 511.povray_r which seems to regress slightly for me
(on a Zen2 machine with -Ofast -march=native).
2021-09-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/65206
* tree-data-ref.h (struct data_reference): Add alt_indices,
order it last.
* tree-data-ref.c (free_data_ref): Release alt_indices.
(dr_analyze_indices): Work on struct indices and get DR_REF as tree.
(create_data_ref): Adjust.
(initialize_data_dependence_relation): Split into head
and tail. When the base objects fail to match up try
again with pointer-based analysis of indices.
* tree-vectorizer.c (vec_info_shared::check_datarefs): Do
not compare the lazily computed alternate set of indices.
* gcc.dg/torture/20210916.c: New testcase.
* gcc.dg/vect/pr65206.c: Likewise.
The patch at r12-3662-g5fee8a0a9223d factored the code for
printing the names of programes into a separate function.
However the moved editions that print out the names of the
assembler, linker (and dsymutil on Darwin) when those are
specified at configure-time were not adjusted accordingly,
leading to a bootstrap fail.
Fixed by testing specifically for execute OK, since we know
these are programs.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
gcc/ChangeLog:
* gcc.c: Test for execute OK when we find the
programs for assembler linker and dsymutil and those
were specified at configure-time.
Resolves:
PR middle-end/102403 - ICE in init_from_control_deps, at gimple-predicate-analysis.cc:2364
gcc/ChangeLog:
PR middle-end/102403
* gimple-predicate-analysis.cc (predicate::init_from_control_deps):
Correct a function pre/postcondition.
gcc/testsuite/ChangeLog:
PR middle-end/102403
* gcc.dg/uninit-pr102403.c: New test.
* gcc.dg/uninit-pr102403-c2.c: New test.
These were used on older systems to equate the FAT libgcc_s
library to single-slice equivalents. Unused for any current
system and never emitted by GCC.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
libgcc/ChangeLog:
* config/t-slibgcc-darwin: Delete unused code.
This reorganises the Darwin symbol vers files to include
the generic ones at the top level; allowing for arch ports
to override (via either exclusion or inclusion as needed).
We add an X86-specific vers file containing the new HF
symbols. Note that although Darwin does not use ELF-style
symbol versioning - the parser that produces the map can
consume it. Using the ELF-style description will help us
know at which rev the symbols were introduced.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
libgcc/ChangeLog:
* config/i386/t-darwin: Add in a vers file for X86-specific
symbols.
* config/t-darwin: Add the generic symbol maps here...
* config/t-slibgcc-darwin: ... removing from here.
* config/i386/libgcc-darwin.ver: New file.
We want to override the libgcc2 generic version of these functions
for X86. First exclude the original and the add in the replacements.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
libgcc/ChangeLog:
* config/i386/t-softfp: Exclude libgcc2 versions of __divhc3
and __mulhc3.
We have a small unwinder shim that is only used for Darwin10
(and only then in quite specific cases). To avoid linking
this code for every executable or DSO, we can present the crt
as a convenience library (rather than a .o file).
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
gcc/ChangeLog:
* config/darwin.h (LINK_COMMAND_SPEC_A): Use Darwin10
unwinder shim as a convenience library.
libgcc/ChangeLog:
* config.host: Use convenience library for Darwin10
unwinder shim.
* config/t-darwin: Build Darwin10 unwinder shim as a
convenience library.
gcc/testsuite
* gfortran.dg/goacc/privatization-1-compute.f90: Make test names
unique.
* gfortran.dg/goacc/routine-external-level-of-parallelism-2.f:
Likewise.
LTO usage requires binutils 2.35 or newer due to
https://sourceware.org/PR25355.
This adds a note in the prerequisites page about it.
Ok?
gcc/ChangeLog:
* doc/install.texi: Add note about
binutils 2.35 is required for LTO usage.
So the problem here is that now the lto-plugin requires NM that works
with LTO to work so we need to pass down NM just like we do for ranlib
and ar.
OK? Bootstrapped and tested with --with-build-config=bootstrap-lto on aarch64-linux-gnu.
Note you need to use binutils 2.35 or later too due to ttps://sourceware.org/PR25355
(I will submit another patch to improve the installation instructions too).
config/ChangeLog:
PR bootstrap/102389
* bootstrap-lto-lean.mk: Handle NM like RANLIB AND AR.
* bootstrap-lto.mk: Likewise.
