This patch fixes an issue where on systems that are
HAVE_TARGET_EXECUTABLE_SUFFIX the driver calls convert_filename in order to
add the suffix to the filename. However while it excludes `-` it doesn't
exclude the null device. This patches changes the check to exclude anything
that is not a file by calling not_actual_file_p instead.
This also fixes a bug in not_actual_file_p which was accidentally testing
a the global variable output_file instead of the supplied argument. This
hasn't been an issue so far because because not_actual_file_p was only used
on output_file till now.
This fixes the adding of an extension to the nul device which is against
the recommendations on msdn[0] and makes it harder for the next tool in line
to detect it.
Bootstrapped Regtested on x86_64-w64-mingw32 and no issues.
Did do a bootstrap on x86_64-pc-linux-gnu but no regtest as it's not a
HAVE_TARGET_EXECUTABLE_SUFFIX system.
[0] https://docs.microsoft.com/en-us/windows/win32/fileio/naming-a-file
gcc/ChangeLog:
PR driver/97574
* gcc.c (convert_filename): Don't add suffix to things that are
not files.
(not_actual_file_p): Use supplied argument.
During the __builtin_clear_padding implementation, I've noticed we don't
diagnose _Atomic whatever * as last argument to __builtin_*_overflow.
As the storing by that builtin isn't atomic in any way, I think we should
reject it.
2020-11-17 Jakub Jelinek <jakub@redhat.com>
PR c/90628
* c-common.c (check_builtin_function_arguments)
<case BUILT_IN_ADD_OVERFLOW>: Diagnose when last argument is pointer
to _Atomic. For the TYPE_READONLY case, adjust message to be usable
for more builtins and argument positions.
* gcc.dg/builtin-arith-overflow-4.c: New test.
The test has been added 3 years before noipa attribute has been introduced,
but already at that point I wanted to avoid IPA opts getting into way,
most of the foo function is optimized away and the debug info just points
to the caller\s var. With the recent modref/aliasing changes the caller's
store to the variable whose address it is passing to the function is
optimized away too.
I think we should just use noipa to avoid this, though perhaps longer term
we should think about some debug info improvements how to deal with that.
The caller had before dse1:
# DEBUG BEGIN_STMT
x.f = 5.0e+0;
x.g = 6.0e+0;
# DEBUG BEGIN_STMT
foo (&x);
# DEBUG BEGIN_STMT
x ={v} {CLOBBER};
and the x.f and x.g stores are optimized away. If we had a way to pretend
the memory contains those values anyway...
Tested on x86_64-linux, fixes the guality regressions
+FAIL: gcc.dg/guality/pr59776.c -O1 -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O1 -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O1 -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O1 -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O1 -DPREVENT_OPTIMIZATION line pr59776.c:20 s2.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -DPREVENT_OPTIMIZATION line pr59776.c:20 s2.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fno-use-linker-plugin -flto-partition=none -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fno-use-linker-plugin -flto-partition=none -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fno-use-linker-plugin -flto-partition=none -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fno-use-linker-plugin -flto-partition=none -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fno-use-linker-plugin -flto-partition=none -DPREVENT_OPTIMIZATION line pr59776.c:20 s2.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects -DPREVENT_OPTIMIZATION line pr59776.c:20 s2.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O3 -g -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O3 -g -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O3 -g -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -O3 -g -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -O3 -g -DPREVENT_OPTIMIZATION line pr59776.c:20 s2.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -Os -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -Os -DPREVENT_OPTIMIZATION line pr59776.c:17 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -Os -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.f == 5.0
+FAIL: gcc.dg/guality/pr59776.c -Os -DPREVENT_OPTIMIZATION line pr59776.c:20 s1.g == 6.0
+FAIL: gcc.dg/guality/pr59776.c -Os -DPREVENT_OPTIMIZATION line pr59776.c:20 s2.f == 5.0
introduced in the last 2 days.
2020-11-17 Jakub Jelinek <jakub@redhat.com>
* gcc.dg/guality/pr59776.c (foo): Use noipa attribute instead of
noinline, noclone.
This patch puts absolute jump tables into a relocatable read-only section
if they are on ELF target and relocation is supported.
gcc/ChangeLog:
* final.c (final_scan_insn_1): Set jump table relocatable as the
second argument of targetm.asm_out.function_rodata_section.
* output.h (default_function_rodata_section,
default_no_function_rodata_section): Add the second argument to the
declarations.
* target.def (function_rodata_section): Change the doc and add
the second argument.
* doc/tm.texi: Regenerate.
* varasm.c (jumptable_relocatable): Implement.
(default_function_rodata_section): Add the second argument
and the support for relocatable read only sections.
(default_no_function_rodata_section): Add the second argument.
(function_mergeable_rodata_prefix): Set the second argument to false.
* config/mips/mips.c (mips_function_rodata_section): Add the second
arugment and set it to false.
* config/s390/s390.c (targetm.asm_out.function_rodata_section): Set
the second argument to false.
* config/s390/s390.md: Likewise.
gcc/ChangeLog:
PR target/97194
* config/i386/i386-expand.c (ix86_expand_vector_set_var): New function.
* config/i386/i386-protos.h (ix86_expand_vector_set_var): New Decl.
* config/i386/predicates.md (vec_setm_operand): New predicate,
true for const_int_operand or register_operand under TARGET_AVX2.
* config/i386/sse.md (vec_set<mode>): Support both constant
and variable index vec_set.
gcc/testsuite/ChangeLog:
* gcc.target/i386/avx2-vec-set-1.c: New test.
* gcc.target/i386/avx2-vec-set-2.c: New test.
* gcc.target/i386/avx512bw-vec-set-1.c: New test.
* gcc.target/i386/avx512bw-vec-set-2.c: New test.
* gcc.target/i386/avx512f-vec-set-2.c: New test.
* gcc.target/i386/avx512vl-vec-set-2.c: New test.
C2x adds macros for decimal floating-point signaling NaNs to
<float.h>. Add these macros to GCC's <float.h> implementation.
Note that the current C2x draft has these under incorrect names
D32_SNAN, D64_SNAN, D128_SNAN. The intent was to change the naming
convention to be consistent with other <float.h> macros when they were
moved to <float.h>, so DEC32_SNAN, DEC64_SNAN, DEC128_NAN, which this
patch uses (as does the current draft integration of TS 18661-3 as an
Annex to C2x, for its _Decimal* and _Decimal*x types).
Bootstrapped with no regressions for x86_64-pc-linux-gnu.
gcc/
2020-11-17 Joseph Myers <joseph@codesourcery.com>
* ginclude/float.h (DEC32_SNAN, DEC64_SNAN, DEC128_SNAN): New C2x
macros.
gcc/testsuite/
2020-11-17 Joseph Myers <joseph@codesourcery.com>
* gcc.dg/dfp/c2x-float-dfp-7.c, gcc.dg/dfp/c2x-float-dfp-8.c: New
tests.
* gcc.dg/c2x-float-no-dfp-3.c: Also check that DEC32_SNAN,
DEC64_SNAN and DEC128_SNAN are not defined.
C2x adds macros for NaNs and infinities to <float.h>, some of them
previously in <math.h> (and some still in <math.h> as well in C2x as
an obsolescent feature). Add these macros to GCC's <float.h>
implementation.
This omits the macros for DFP signaling NaNs, leaving those to be
added in a separate patch. However, it includes the _FloatN /
_FloatNx macros (conditional on __STDC_WANT_IEC_60559_TYPES_EXT__) in
the current draft version of the integration of TS 18661-3 into C2x as
an Annex.
As GCC allows duplicate macro definitions with different expansions in
system headers, it should be OK if <math.h> defines INFINITY or NAN
with a slightly different expansion (e.g. different choice of whether
there is whitespace between tokens); tests are added including
<float.h> and <math.h> in either order. Because <float.h> uses #undef
on all macros before defining them, even with -Wsystem-headers there
could only ever be issues when <math.h> is included after <float.h>.
Bootstrapped with no regressions on x86_64-pc-linux-gnu.
gcc/
2020-11-17 Joseph Myers <joseph@codesourcery.com>
* ginclude/float.h (INFINITY, NAN, FLT_SNAN, DBL_SNAN, LDBL_SNAN)
(FLT16_SNAN, FLT32_SNAN, FLT64_SNAN, FLT128_SNAN, FLT32X_SNAN)
(FLT64X_SNAN, FLT128X_SNAN, DEC_INFINITY, DEC_NAN): New C2x
macros.
* doc/sourcebuild.texi (Effective-Target Keywords): Document inff.
gcc/testsuite/
2020-11-17 Joseph Myers <joseph@codesourcery.com>
* lib/target-supports.exp (check_effective_target_inff): New.
* gcc.dg/c11-float-4.c, gcc.dg/c11-float-5.c,
gcc.dg/c11-float-dfp-2.c, gcc.dg/c2x-float-2.c,
gcc.dg/c2x-float-3.c, gcc.dg/c2x-float-4.c, gcc.dg/c2x-float-5.c,
gcc.dg/c2x-float-6.c, gcc.dg/c2x-float-7.c, gcc.dg/c2x-float-8.c,
gcc.dg/c2x-float-9.c, gcc.dg/c2x-float-no-dfp-3.c,
gcc.dg/c2x-float-no-dfp-4.c, gcc.dg/dfp/c2x-float-dfp-4.c,
gcc.dg/dfp/c2x-float-dfp-5.c, gcc.dg/dfp/c2x-float-dfp-6.c,
gcc.dg/torture/float128-nan-floath.c,
gcc.dg/torture/float128x-nan-floath.c,
gcc.dg/torture/float16-nan-floath.c,
gcc.dg/torture/float32-nan-floath.c,
gcc.dg/torture/float32x-nan-floath.c,
gcc.dg/torture/float64-nan-floath.c,
gcc.dg/torture/float64x-nan-floath.c,
gcc.dg/torture/floatn-nan-floath.h: New tests.
This patch retires ppc64-fp.c in favour of using
"LIB2_SIDITI_CONV_FUNCS = yes", which is a lot better solution than
having a copy of selected libgcc2.c functions.
* config/rs6000/t-ppc64-fp (LIB2ADD): Delete.
(LIB2_SIDITI_CONV_FUNCS): Define.
* config/rs6000/ppc64-fp.c: Delete file.
This patch catches a missed optimization opportunity where GCC currently
generates worse code than LLVM. The issue, as nicely analyzed in bugzilla,
boils down to the following three insns in combine:
(insn 6 5 7 2 (parallel [
(set (reg:DI 85)
(ashift:DI (reg:DI 85)
(const_int 32 [0x20])))
(clobber (reg:CC 17 flags))
]) "pr92180.c":4:10 564 {*ashldi3_1}
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
(insn 7 6 14 2 (parallel [
(set (reg:DI 84)
(ior:DI (reg:DI 84)
(reg:DI 85)))
(clobber (reg:CC 17 flags))
]) "pr92180.c":4:10 454 {*iordi_1}
(expr_list:REG_DEAD (reg:DI 85)
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil))))
(insn 14 7 15 2 (set (reg/i:SI 0 ax)
(subreg:SI (reg:DI 84) 0)) "pr92180.c":5:1 67 {*movsi_internal}
(expr_list:REG_DEAD (reg:DI 84)
(nil)))
Normally, combine/simplify-rtx would notice that insns 6 and 7
(which update highpart bits) are unnecessary as the final insn 14
only requires to lowpart bits. The complication is that insn 14
sets a hard register in targetm.class_likely_spilled_p which
prevents combine from performing its simplifications, and removing
the redundant instructions.
At first glance a fix would appear to require changes to combine,
potentially affecting code generation on all small register class
targets... An alternate (and I think clever) solution is to spot
that this problematic situation can be avoided by the backend.
At RTL expansion time, the middle-end has a clear separation between
pseudos and hard registers, so the RTL initially contains:
(insn 9 8 10 2 (set (reg:SI 86)
(subreg:SI (reg:DI 82 [ _1 ]) 0)) "pr92180.c":6:10 -1
(nil))
(insn 10 9 14 2 (set (reg:SI 83 [ <retval> ])
(reg:SI 86)) "pr92180.c":6:10 -1
(nil))
(insn 14 10 15 2 (set (reg/i:SI 0 ax)
(reg:SI 83 [ <retval> ])) "pr92180.c":7:1 -1
(nil))
which can be optimized without problems by combine; it is only the
intervening passes (initially fwprop1) that propagate computations
into sets of hard registers, and disable those opportunities.
The solution proposed here is to have the x86 backend/recog prevent
early RTL passes composing instructions (that set likely_spilled hard
registers) that they (combine) can't simplify, until after reload.
We allow sets from pseudo registers, immediate constants and memory
accesses, but anything more complicated is performed via a temporary
pseudo. Not only does this simplify things for the register allocator,
but any remaining register-to-register moves are easily cleaned up
by the late optimization passes after reload, such as peephole2 and
cprop_hardreg.
This patch has been tested on x86_64-pc-linux-gnu with a
"make bootstrap" and a "make -k check" with no new failures.
Ok for mainline?
gcc
PR rtl-optimization/92180
* config/i386/i386.c (ix86_hardreg_mov_ok): New function to
determine whether (set DST SRC) should be allowed at this point.
* config/i386/i386-protos.h (ix86_hardreg_mov_ok): Prototype here.
* config/i386/i386-expand.c (ix86_expand_move): Check whether
this is a complex set of a likely spilled hard register, and if
so place the value in a pseudo, and load the hard reg from it.
* config/i386/i386.md (*movdi_internal, *movsi_internal)
(*movhi_internal, *movqi_internal): Make these instructions
conditional on ix86_hardreg_mov_ok.
(*lea<mode>): Make this define_insn_and_split conditional on
ix86_hardreg_mov_ok.
gcc/testsuite
PR rtl-optimization/92180
* gcc.target/i386/pr92180.c: New test.
The changes in r11-4799 introduced a dummy enum rid type with
a different initial member name to the actual version (an ODR
violation). Fixed by including the header declaring the
actual type.
gcc/c-family/ChangeLog:
PR objc/97854
* stub-objc.c: Include c-common.h to declare enum rid.
Add code for runtime checking of status of ALLOCATABLE and POINTER
arguments to the SIZE intrinsic when -fcheck=pointer is specified.
gcc/fortran/ChangeLog:
* trans-intrinsic.c (gfc_conv_intrinsic_size): Generate runtime
checking code for status of argument.
gcc/testsuite/ChangeLog:
* gfortran.dg/pr48958.f90: New test.
this patch implements the IPA propagation part of EAF flags handling in
ipa-modref. It extends the local analysis to collect lattice consisting of
flags and escape points. SSA name escapes if it is passed directly or
indirectly to a function call.
If useful flags are found for parameter its escape list is stored into escape
summaries. This time each call site is annotated with info on which function
parameters escape to what argument of function call.
At IPA time we then perform iterative dataflow and produce final flags.
ipa-modref is still cheaper than pure-const when running on cc1plus (about 2-3%
that is what accounts every non-trivial passs) and the dataflow converges in 1
or 2 iterations.
Local analysis does some work to avoid streaming escape points when they are
not useful to determine final flags (that is, local escape analysis determined
good enough flags). For cc1plus there are 225k calls with useful escape
summary.
* ipa-modref.c (escape_point): New type.
(modref_lattice): New type.
(escape_entry): New type.
(escape_summary): New type.
(escape_summaries_t): New type.
(escape_summaries): New static variable.
(eaf_flags_useful_p): New function.
(modref_summary::useful_p): Add new check_flags
attribute; check eaf_flags for usefulness.
(modref_summary_lto): Add arg_flags.
(modref_summary_lto::useful_p): Add new check_flags
attribute; check eaf_flags for usefulness.
(dump_modref_edge_summaries): New function.
(remove_modref_edge_summaries): New function.
(ignore_retval_p): New predicate.
(ignore_stores_p): Also ignore for const.
(remove_summary): Call remove_modref_edge_summaries.
(modref_lattice::init): New member function.
(modref_lattice::release): New member unction.
(modref_lattice::dump): New member function.
(modref_lattice::add_escape_point): New member function.
(modref_lattice::merge): Two new member functions.
(modref_lattice::merge_deref): New member functions.
(modref_lattice::merge_direct_load): New member function.
(modref_lattice::merge_direct_store): New member function.
(call_lhs_flags): Rename to ...
(merge_call_lhs_flags): ... this one; reimplement using
modreflattice.
(analyze_ssa_name_flags): Replace KNOWN_FLAGS param by LATTICE;
add IPA parametr; use modref_lattice.
(analyze_parms): New parameter IPA and SUMMARY_LTO; update for
modref_lattice; initialize escape_summary.
(analyze_function): Allocate escape_summaries; update uses of useful_p.
(modref_write_escape_summary): New function.
(modref_read_escape_summary): New function.
(modref_write): Write escape summary.
(read_section): Read escape summary.
(modref_read): Initialie escape_summaries.
(remap_arg_flags): New function.
(update_signature): Use it.
(escape_map): New structure.
(update_escape_summary_1, update_escape_summary): New functions.
(ipa_merge_modref_summary_after_inlining): Merge escape summaries.
(propagate_unknown_call): Do not remove useless summaries.
(remove_useless_summaries): Remove them here.
(modref_propagate_in_scc): Update; do not dump scc.
(modref_propagate_dump_scc): New function.
(modref_merge_call_site_flags): New function.
(modref_propagate_flags_in_scc): New function.
(pass_ipa_modref::execute): Use modref_propagate_flags_in_scc
and modref_propagate_dump_scc; delete escape_summaries.
(ipa_modref_c_finalize): Remove escape_summaries.
* ipa-modref.h (modref_summary): Update prototype of useful_p.
* params.opt (param=modref-max-escape-points): New param.
* doc/invoke.texi (modref-max-escape-points): Document.
This removes useless work from LIM when store-motion is disabled.
2020-11-16 Richard Biener <rguenther@suse.de>
* tree-ssa-loop-im.c (analyze_memory_references): Add
store_motion parameter and elide unnecessary work.
(tree_ssa_lim_initialize): Likewise.
(loop_invariant_motion_in_fun): Pass down store_motion.
Fixes:
FAIL: compiler driver --help=common option(s): "^ +-.*[^:.]$" absent from output: " --param=modref-max-depth= Maximum depth of DFS walk used by modref escape analysis"
gcc/ChangeLog:
* params.opt: All modref parameters miss Optimization and Param
keyword as seen in testsuite failure.
c-c++-common/asan/pointer-compare-1.c assumes the certain order for
variable placement. Add __attribute__((used)) to avoid variable
placement changes due to SHF_GNU_RETAIN.
PR testsuite/97803
* c-c++-common/asan/pointer-compare-1.c (global1): Add
__attribute__((used))
(global2): Likewise.
(small_global): Likewise.
(large_global): Likewise.
Currently this is shown when building libstdc++ on Solaris:
-lrt: open: No such file or directory
The error comes from the make_sunver.pl script which tries to open each
of its arguments. The arguments are passed by this make rule:
perl ${glibcxx_srcdir}/scripts/make_exports.pl \
libstdc++-symbols.ver \
$(libstdc___la_OBJECTS:%.lo=.libs/%.o) \
`echo $(libstdc___la_LIBADD) | \
sed 's,/\([^/.]*\)\.la,/.libs/\1.a,g'` \
> $@ || (rm -f $@ ; exit 1)
The $(libstdc___la_LIBADD) variable includes $(GLIBCXX_LIBS) which
contains -lrt on Solaris.
This patch adds another sed script to filter -l arguments from the echo
command. In order to reliably match ' -l[^ ]* ' the echo arguments are
quoted and a space added before and after them. This might be overkill
just to remove -lrt from the start of the string, but should be robust
in case other -l arguments are added to $(GLIBCXX_LIBS), or in case the
$(libstdc___la_LIBADD) libraries are reordered.
libstdc++-v3/ChangeLog:
* src/Makefile.am (libstdc++-symbols.ver-sun): Remove -lrt from
arguments passed to make_sunver.pl script.
* src/Makefile.in: Regenerate.
Register the profile information in the specified section instead of using a
constructor/destructor. A pointer to the profile information generated by
-fprofile-arcs or -ftest-coverage is placed in the specified section for each
translation unit. This option disables the profile information registration
through a constructor and it disables the profile information processing
through a destructor.
I am not sure how I can test this option. One approach would be to assemble a
test file, then scan it and check that a .gcov_info section is present and no
__gcov_init() and __gcov_exit() calls are present. Is there an example for
this in the test suite?
gcc/
* common.opt (fprofile-info-section): New.
* coverage.c (build_gcov_info_var_registration): New.
(coverage_obj_init): Evaluate profile_info_section and use
build_gcov_info_var_registration().
* doc/invoke.texi (fprofile-info-section): Document.
* opts.c (common_handle_option): Process fprofile-info-section
option.
gcc/testsuite/ChangeLog:
* gcc.dg/profile-info-section.c: New test.
This properly handles reduction PHI nodes with unrepresented
initial value as leaf in the SLP graph.
2020-11-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/97838
* tree-vect-slp.c (vect_slp_build_vertices): Properly handle
not backwards reachable cycles.
(vect_optimize_slp): Check a node is leaf before marking it
visited.
* gcc.dg/vect/pr97838.c: New testcase.
We're stripping conversions off access functions of inductions and
thus the step can be of different sign. Fix bogus step CTORs by
converting the elements rather than the whole vector.
2020-11-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/97835
* tree-vect-loop.c (vectorizable_induction): Convert step
scalars rather than step vector.
* gcc.dg/vect/pr97835.c: New testcase.
This avoids passing NULL to expressions_equal_p.
2020-11-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/97830
* tree-ssa-sccvn.c (vn_reference_eq): Check for incomplete
types before comparing TYPE_SIZE.
* gcc.dg/pr97830.c: New testcase.
PREFETCHW should be both in march=broadwell and march=silvermont.
I move PREFETCHW from march=broadwell to march=silvermont in previous
patch.
gcc/ChangeLog:
* config/i386/i386.h: Add PREFETCHW to march=broadwell.
* doc/invoke.texi: Put PREFETCHW back to relation arch.
The naming scheme used by GCC to reference MSP430 hardware multiply
library functions is inconsistent.
Sometimes the "GCC" names (e.g. mulsi2) are used, other times the
"MSPABI" names (e.g. __mspabi_mpyl) are used.
Also, sometimes an identifier for the hardware multiply support is
appended to the GCC name, when the functions are defined, but this is
not required.
This patch fixes those issues, so the names used to refer to the
hardware multiply library functions follow a consistent pattern.
gcc/ChangeLog:
* config/msp430/msp430.c (msp430_output_labelref): Don't process mspabi
hwmult library function names into GCC-style names.
libgcc/ChangeLog:
* config/msp430/lib2hw_mul.S: Omit _hw* suffix from GCC names for
hwmult library functions.
gcc/testsuite/ChangeLog:
* gcc.target/msp430/rtx-cost-Os-f5series.c: Adjust test to use new
hwmult library function name.
gcc/ChangeLog:
* config/msp430/msp430.c (msp430_use_16bit_hwmult): New.
(use_32bit_hwmult): Rename to..
(msp430_use_32bit_hwmult): ..this.
(msp430_muldiv_costs): Use msp430_use_16bit_hwmult and
msp430_use_32bit_hwmult.
(msp430_expand_helper): Use msp430_use_16bit_hwmult and
msp430_use_32bit_hwmult.
(msp430_output_labelref): Use msp430_use_32bit_hwmult.
ipa/modref-2.c output for Parm 1 depends on the word size. This patch
updates the testcase to expect the appropriate result for ilp32 and lp64.
gcc/testsuite/ChangeLog:
* gcc.dg/ipa/modref-2.c: Add ilp32 expected result.
gcc/testsuite:
* lib/scanasm.exp (parse_section_of_symbols): Also look for AIX
XCOFF CSECT notation.
* g++.dg/opt/const4.C: Also look for AIX XCOFF "[RO]".
* gcc.dg/20021029-1.c: Likewise.
* gcc.dg/array-quals-1.c: Likewise and "[RW]".
* g++.dg/gomp/tls-5.C: Also look for AIX XCOFF "[TL]".
* gcc.dg/pr25376.c: Accept AIX decoration around named section
and function descriptor.
Use `enum rtx_code' rather than `int' to hold the the RTL expression
code in `vax_rtx_costs', matching the type these codes have been defined
with and making debugging just a tiny little bit easier.
gcc/
* config/vax/vax.c (vax_rtx_costs): Use `rtx_code' rather than
`int' for `code'.
Correct a regression in `vax-netbsdelf' gcc testing:
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c: In function '__bswapdi2':
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:5:19: error: use of C99 long long integer constant [-Wlong-long]
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:6:14: error: use of C99 long long integer constant [-Wlong-long]
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:7:14: error: use of C99 long long integer constant [-Wlong-long]
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:8:14: error: use of C99 long long integer constant [-Wlong-long]
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:9:14: error: use of C99 long long integer constant [-Wlong-long]
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:10:14: error: use of C99 long long integer constant [-Wlong-long]
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:11:14: error: use of C99 long long integer constant [-Wlong-long]
.../gcc/testsuite/gcc.target/vax/bswapdi-1.c:12:14: error: use of C99 long long integer constant [-Wlong-long]
compiler exited with status 1
FAIL: gcc.target/vax/bswapdi-1.c (test for excess errors)
which is due to the defaults from `vax.exp':
# If a testcase doesn't have special options, use these.
global DEFAULT_CFLAGS
if ![info exists DEFAULT_CFLAGS] then {
set DEFAULT_CFLAGS " -ansi -pedantic-errors"
}
Use an empty override then as the options used do not matter for the
objective of this test case.
gcc/testsuite/
* gcc.target/vax/bswapdi-1.c (dg-options): New setting.
Fix a typo in a NO_EXTERNAL_INDIRECT_ADDRESS macro check around an
assertion verifying DImode addition operands to be valid for PIC.
gcc/
* config/vax/vax.c (vax_output_int_add) <E_DImode>: Fix a typo
in NO_EXTERNAL_INDIRECT_ADDRESS.
Fix a typo and check both SImode addition operands for being incorrectly
symbolic in PIC mode before issuing a diagnostic dump of the offending
RTL expression.
gcc/
* config/vax/vax.c (vax_output_int_add) <E_SImode>: Also check
`operands[2]' for being symbolic with PIC rather than checking
`operands[1]' twice.
Abstract checking has been problematic for a while; when I implemented an
earlier issue resolution to do more checking it led to undesirable
instantiations, and so backed some of it out. During the C++20 process we
decided with P0929R2 that we should go the other way, and only check
abstractness when we're actually creating an object, not when merely forming
an array or function type. This means that we can remove the machinery for
checking whether a newly complete class makes some earlier declaration
ill-formed. This change was moved as a DR, so I'm applying it to all
standard levels. This could be reconsidered if it causes problems, but I
don't expect it to.
The change to the libstdc++ result_of test brings the expected behavior in
line with that for incomplete types, but as in PR97841 I think the libstdc++
handling of incomplete types in this and other type_traits is itself wrong,
so I expect these lines and others to change again before long.
gcc/cp/ChangeLog:
* decl.c (cp_finish_decl): Only check abstractness on definition.
(require_complete_types_for_parms): Check abstractness here.
(create_array_type_for_decl): Not here.
(grokdeclarator, grokparms, complete_vars): Not here.
* pt.c (tsubst, tsubst_arg_types, tsubst_function_type): Not here.
* typeck2.c (struct pending_abstract_type): Remove.
(struct abstract_type_hasher): Remove.
(abstract_pending_vars, complete_type_check_abstract): Remove.
(abstract_virtuals_error_sfinae): Handle arrays.
* call.c (conv_is_prvalue): Split out from...
(conv_binds_ref_to_prvalue): ...here.
(implicit_conversion_1): Rename from implicit_conversion.
(implicit_conversion): An abstract prvalue is bad.
(convert_like_internal): Don't complain if expr is already
error_mark_node.
gcc/testsuite/ChangeLog:
* g++.dg/other/abstract1.C: Adjust.
* g++.dg/other/abstract2.C: Adjust.
* g++.dg/other/abstract4.C: Adjust.
* g++.dg/other/abstract5.C: Adjust.
* g++.dg/other/abstract8.C: New test.
* g++.dg/template/sfinae-dr657.C: Adjust.
* g++.old-deja/g++.other/decl3.C: Adjust.
libstdc++-v3/ChangeLog:
* testsuite/20_util/result_of/sfinae_friendly_1.cc: Adjust.
Now that we know the vr_values and ranger versions are in sync, it is
safe to remove the vr_values version and just call the ranger one.
I am leaving the UBSAN bits in place since they make use of
relationals which are still not implemented in the ranger.
gcc/ChangeLog:
* vr-values.c (vr_values::extract_range_builtin): Rename to...
(vr_values::extract_range_from_ubsan_builtin): ...this.
Remove everything but UBSAN code.
(vr_values::extract_range_basic): Call ranger version for
everything except UBSAN built-ins.
* vr-values.h (class vr_values): Rename extract_range_builtin to
extract_range_from_ubsan_builtin.
gcc/ChangeLog:
* ipa-modref.c (analyze_ssa_name_flags): Make return to clear
EAF_UNUSED flag.
gcc/testsuite/ChangeLog:
* gcc.c-torture/execute/pr97836.c: New test.
The test needs to use Object rather than NSObject on this and earlier
OS versions. Although the PR reports against the GNU runtime, we run
this on NeXT as well.
gcc/testsuite/ChangeLog:
* objc.dg/pr23214.m: Use Object as the root object before
Darwin12 (and NSObject after).
A minimal patch for the EAF flags discovery. It works only in local ipa-modref
and gives up on cyclic SSA graphs. It improves pt_solution_includes
disambiguations twice.
gcc/Changelog:
* gimple.c: Include ipa-modref-tree.h and ipa-modref.h.
(gimple_call_arg_flags): Use modref to determine flags.
* ipa-modref.c: Include gimple-ssa.h, tree-phinodes.h,
tree-ssa-operands.h, stringpool.h and tree-ssanames.h.
(analyze_ssa_name_flags): Declare.
(modref_summary::useful_p): Summary is also useful if arg flags are
known.
(dump_eaf_flags): New function.
(modref_summary::dump): Use it.
(get_modref_function_summary): Be read for current_function_decl
being NULL.
(memory_access_to): New function.
(deref_flags): New function.
(call_lhs_flags): New function.
(analyze_parms): New function.
(analyze_function): Use it.
* ipa-modref.h (struct modref_summary): Add arg_flags.
* doc/invoke.texi (ipa-modref-max-depth): Document.
* params.opt (ipa-modref-max-depth): New param.
