This patch adds -march=armv8.5-a to the Arm backend.
Armv8.5-A also adds two new security features:
- Speculation Barrier instruction
- Execution and Data Prediction Restriction Instructions
These are made optional to all older Armv8-A versions. Thus we are adding two
new options "+sb" and "+predres" to all older Armv8-A. These are passed on to
the assembler and have no code generation effects and have already gone in the
trunk of binutils.
*** gcc/ChangeLog ***
2018-11-12 Sudakshina Das <sudi.das@arm.com>
* config/arm/arm-cpus.in (armv8_5, sb, predres): New features.
(ARMv8_5a): New fgroup.
(armv8.5-a): New arch.
(armv8-a, armv8.1-a, armv8.2-a, armv8.3-a, armv8.4-a): New options
sb and predres.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/t-aprofile: Add matching rules for -march=armv8.5-a
* config/arm/t-arm-elf (all_v8_archs): Add armv8.5-a.
* config/arm/t-multilib (v8_5_a_simd_variants): New variable.
Add matching rules for -march=armv8.5-a and extensions.
* doc/invoke.texi (ARM options): Document -march=armv8.5-a.
Add sb and predres to all armv8-a except armv8.5-a.
*** gcc/testsuite/ChangeLog ***
2018-11-12 Sudakshina Das <sudi.das@arm.com>
* gcc.target/arm/multilib.exp: Add some -march=armv8.5-a
combination tests.
From-SVN: r266031
2018-11-11 Sandra Loosemore <sandra@codesourcery.com>
PR c/69502
gcc/
* doc/extend.texi (Common Type Attributes): For the align type
attribute, copy language about decreasing alignment from the
corresponding variable attribute.
From-SVN: r266025
2018-11-11 Richard Biener <rguenther@suse.de>
* tree-vrp.h (class value_range_base): New base class for
value_range containing all but the m_equiv member.
(dump_value_range_base): Add.
(range_includes_zero_p): Work on value_range_base.
* tree-vrp.c (value_range_base::set): Split out base handling
from...
(value_range::set): this.
(value_range::set_equiv): New.
(value_range_base::value_range_base): New constructors.
(value_range_base::check): Split out base handling from...
(value_range::check): this.
(value_range::equal_p): Refactor in terms of
ignore_equivs_equal_p which is now member of the base.
(value_range_base::set_undefined): New.
(value_range_base::set_varying): Likewise.
(value_range_base::dump):Split out base handling from...
(value_range::dump): this.
(value_range_base::set_and_canonicalize): Split out base handling
from...
(value_range::set_and_canonicalize): this.
(value_range_base::union_): New.
* ipa-prop.h (struct ipa_jump_func): Use value_range_base *
for m_vr.
* ipa-cp.c (class ipcp_vr_lattice): Use value_range_base
instead of value_range everywhere.
(ipcp_vr_lattice::print): Use dump_value_range_base.
(ipcp_vr_lattice::meet_with): Adjust.
(ipcp_vr_lattice::meet_with_1): Likewise.
(ipa_vr_operation_and_type_effects): Likewise.
(propagate_vr_across_jump_function): Likewise.
* ipa-prop.c (struct ipa_vr_ggc_hash_traits): Likewise.
(ipa_get_value_range): Likewise.
(ipa_set_jfunc_vr): Likewise.
(ipa_compute_jump_functions_for_edge): Likewise.
From-SVN: r266011
Implement P0318R1 unwrap_ref_decay and unwrap_reference
* include/std/type_traits (unwrap_reference, unwrap_reference_t)
(unwrap_ref_decay, unwrap_ref_decay_t): New traits and aliases.
* testsuite/20_util/unwrap_reference/1.cc: New test.
* testsuite/20_util/unwrap_reference/2.cc: New test.
From-SVN: r266010
2018-11-10 Sandra Loosemore <sandra@codesourcery.com>
PR middle-end/65703
gcc/
* doc/invoke.texi (Optimize Options): Add @opindex entries
for the positive forms of -fno-xxx and -mno-xxx options
that were lacking them.
From-SVN: r266008
This makes make_more_copies do what its documentation says, that is,
only make an intermediate pseudo if copying to a pseudo.
This regressed generated code quality when we didn't keep the original
notes that were on the copy, but since r265582 we do, and only allowing
pseudos now is a win. It also simplifies the code.
* combine.c (make_more_copies): Only make an intermediate copy if the
dest of a move is a pseudo.
From-SVN: r266004
PR target/87221
* config/netbsd-elf.h (NETBSD_STARTFILE_SPEC): Use crtbeginS.o for PIE.
(NETBSD_ENDFILE_SPEC): Use crtendS.o for PIE.
From-SVN: r265994
r265490 allowed the compiler to choose in a more flexible way whether to
use load or load-address-relative-long (LARL) instruction. When it
chose LARL for literal pool references, the latter ones were rewritten
by pass_s390_early_mach to use UNSPEC_LTREF, which assumes base register
usage, which in turn is not compatible with LARL. The end result was an
ICE because of unrecognizable insn.
UNSPEC_LTREF and friends are necessary in order to communicate the
dependency on the base register to pass_sched2. When relative
addressing is used, no base register is necessary, so in such cases the
rewrite must be avoided.
gcc/ChangeLog:
2018-11-09 Ilya Leoshkevich <iii@linux.ibm.com>
PR target/87762
* config/s390/s390.c (s390_safe_relative_long_p): New function.
(annotate_constant_pool_refs): Skip insns which support
relative addressing.
(annotate_constant_pool_refs_1): New helper function.
(find_constant_pool_ref): Skip insns which support relative
addression.
(find_constant_pool_ref_1): New helper function.
(replace_constant_pool_ref): Skip insns which support
relative addressing.
(replace_constant_pool_ref_1): New helper function.
(s390_mainpool_start): Adapt to the new signature.
(s390_mainpool_finish): Likewise.
(s390_chunkify_start): Likewise.
(s390_chunkify_finish): Likewise.
(pass_s390_early_mach::execute): Likewise.
(s390_prologue_plus_offset): Likewise.
(s390_emit_prologue): Likewise.
(s390_emit_epilogue): Likewise.
From-SVN: r265991
* gimplify.c (gimplify_scan_omp_clauses): Call sorry_at for valid
but unsupported lastprivate with conditional modifier.
* c-c++-common/gomp/lastprivate-conditional-1.c: New test.
* c-c++-common/gomp/lastprivate-conditional-2.c: New test.
From-SVN: r265987
* affinity-fmt.c: Include inttypes.h if HAVE_INTTYPES_H.
(gomp_display_affinity): Use __builtin_choose_expr to handle
properly handle argument having integral, or pointer or some other
type. If inttypes.h is available and PRIx64 is defined, use PRIx64
with uint64_t type instead of %llx and unsigned long long.
From-SVN: r265985
PR libstdc++/87787
* include/bits/stl_uninitialized.h (__relocate_a_1): Do not call
memmove when there's nothing to copy (and pointers could be null).
From-SVN: r265984
The code to implement new-style gccgo name mangling had a recipe that
didn't quite match the one in the compiler (incorrect handling for
'.'). This showed up as a failure in the gotools cgo test if the
directory containing the test run included a "." character.
Reviewed-on: https://go-review.googlesource.com/c/147917
From-SVN: r265981
A couple of very minor issues with the new support for CPU
aliases.
* config/arm/parsecpu.awk (/alias/): Tighten invisible alias
matching criteria. Remove unused array initializer.
From-SVN: r265978
2018-11-09 Bill Schmidt <wschmidt@linux.ibm.com>
Jinsong Ji <jji@us.ibm.com>
* config/rs6000/xmmintrin.h (_mm_cvtss_si32): Fix incorrect
constraints by introducing a new temporary.
(_mm_cvtss_si64): Likewise.
Co-Authored-By: Jinsong Ji <jji@us.ibm.com>
From-SVN: r265975
2018-11-09 Martin Liska <mliska@suse.cz>
* cgraph.h (ipa_discover_readonly_nonaddressable_vars): Rename
to ...
(ipa_discover_variable_flags): ... this.
* common.opt: Come up with new flag -fipa-reference-addressable.
* doc/invoke.texi: Document it.
* ipa-reference.c (propagate): Call the renamed fn.
* ipa-visibility.c (whole_program_function_and_variable_visibility):
Likewise.
* ipa.c (ipa_discover_readonly_nonaddressable_vars): Renamed to
...
(ipa_discover_variable_flags): ... this. Discover
non-addressable variables only with the newly added flag.
* opts.c: Enable the newly added flag with -O1 and higher
optimization level.
2018-11-09 Martin Liska <mliska@suse.cz>
* gcc.dg/tree-ssa/writeonly-2.c: New test.
From-SVN: r265969
Jonathan Wakely