Commit Graph

154370 Commits

Author SHA1 Message Date
Jason Merrill
157420b4bd PR c++/80174 - ICE with partial specialization of member template.
PR c++/71747
	* pt.c (get_partial_spec_bindings): Only coerce innermost args.

From-SVN: r249319
2017-06-16 22:27:52 -04:00
Jason Merrill
3eec359d0d PR c++/80831 - ICE with -fsyntax-only.
* decl2.c (c_parse_final_cleanups): Use cgraph_node::get_create.

From-SVN: r249318
2017-06-16 22:27:45 -04:00
Jason Merrill
b126bff44d PR c++/80639 - ICE with invalid PMF initialization.
PR c++/80043 - ICE with -fpermissive
	* typeck.c (convert_for_assignment): Recurse when instantiate_type
	returns without an error.

From-SVN: r249317
2017-06-16 22:27:33 -04:00
GCC Administrator
c0a73a40e9 Daily bump.
From-SVN: r249316
2017-06-17 00:16:27 +00:00
Carl Love
be1418c7a4 rs6000-c.c (altivec_overloaded_builtins): Add definitions for vec_float, vec_float2, vec_floato, vec_floate built-ins.
gcc/ChangeLog:

2017-06-16  Carl Love  <cel@us.ibm.com>

	* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
	definitions for vec_float, vec_float2, vec_floato,
	vec_floate built-ins.
	* config/rs6000/vsx.md (define_c_enum "unspec"): Add RTL code
	for instructions vsx_xvcvsxws vsx_xvcvuxwsp, float2, floato and
	floate.
	* config/rs6000/rs6000-builtin.def (FLOAT2_V2DI, FLOATE_V2DF,
	FLOATE_2DI, FLOATO_V2DF, FLOATEE_V2DI, XVCVSXWSP_V4SF,
	UNS_FLOATO_V2DI, UNS_FLOATE_V2DI): Add definitions.
	* config/altivec.md (define_insn "p8_vmrgew_<mode>",
	define_mode_attr VF_sxddp): Add V4SF type to p8_vmrgew.
	* config/rs6000/altivec.h (vec_float, vec_float2, vec_floate,
	vec_floato): Add builtin defines.
	* doc/extend.texi (vec_float, vec_float2, vec_floate, vec_floato):
	Update the built-in documentation file for the new built-in
	functions.

gcc/testsuite/ChangeLog:

2017-06-16  Carl Love  <cel@us.ibm.com>

	* gcc.target/powerpc/builtins-3-runnable.c (test_result_sp,
	main): Add runnable tests and test checker for vec_float,
	vec_float2, vec_floate and vec_floato builtins.

From-SVN: r249311
2017-06-16 22:34:28 +00:00
Richard Earnshaw
e3e266bfb1 [arm] Fix various tests
The neon-thumb2-move.c test was overriding the options that had been
detected as being necessary to enable Neon.  The result was that the
combination of the test's options and those auto-detected were not
compatible with neon leading to a test failure.  The correct fix here
is to stick with the options that dg-add-options arm_neon has worked
out.

The thumb2-slow-flash-data tests were relying (incorrectly) on a
particular FPU being enabled by default.  These tests are fixed by
adding +fp to the architecture selected.

	* gcc.target/arm/neon-thumb2-move.c (dg-options): Don't override
	the architecture options added by dg-add-options arm_neon.
	* gcc.target/arm/thumb2-slow-flash-data-2.c (dg-opitions): Add +fp
	to the architecture.
	* gcc.target/arm/thumb3-slow-flash-data-3.c (dg-opitions): Likewise.
	* gcc.target/arm/thumb4-slow-flash-data-3.c (dg-opitions): Likewise.
	* gcc.target/arm/thumb5-slow-flash-data-3.c (dg-opitions): Likewise.

From-SVN: r249310
2017-06-16 21:07:20 +00:00
Richard Earnshaw
718a3eab29 [arm] Mark -marm and -mthumb as being inverse options
-marm and -mthumb are opposites: one cancels out the other.  This patch
marks them as such so that the driver will eliminate all but the last
option on the command line.  This aids multilib selection which otherwise
can get confused if both are present.

	* config/arm/arm.opt (marm): Mark as the negative of of -mthumb.
	(mthumb): Mark as the negative of -marm.

From-SVN: r249309
2017-06-16 21:07:11 +00:00
Richard Earnshaw
f54133eaab [arm][doc] Document changes to -mcpu, -mtune and -mfpu.
This patch adds the remainder of the main documentation changes.  It
adds the changes for -mcpu, -mtune and -mfpu.  I've chosen to document
the extension options under -mcpu rather than under -mtune because,
while they are permitted with -mtune, they do not affect the behaviour
of the tuning done by the compiler.

I've also inverted the sense of the table (making the primary index
the extension name and then listing the CPU names to which it applies.
This is because the extensions are much more orthoganal in meaning
here and having a primary entry via the CPU name would lead to
enormous duplication.

Finally, it adds the relevant changes to -mfpu.  I haven't stated yet
that any setting of -mfpu other than 'auto' is deprecated, but that is
certainly the long-term goal of this patch series.

	* doc/invoke.texi (ARM Options, -mcpu): Document supported
	extension options.
	(ARM Options, -mtune): Document that this accepts the same
	extension options as -mcpu.
	(ARM Options, -mfpu): Document addition of -mfpu=auto.

From-SVN: r249308
2017-06-16 21:07:03 +00:00
Richard Earnshaw
6d2f99aae1 [arm][doc] Document new -march= syntax.
This adds documentation for the new extension options to -march= on ARM.
I tried a number of different ways of formatting the information, but this
seems the best, given what can be achieved in texinfo format.

	* doc/invoke.texi (ARM Options, -march=): Document new syntax and
	permitted extensions.

From-SVN: r249307
2017-06-16 21:06:51 +00:00
Richard Earnshaw
ffc126904b [arm] Add a few missing architecture extension options.
Reviewing the list of options for the purposes of writing the
documentation revealed that a small number of options were missing.
Mostly these are aliases for existing options, but in a couple of
cases we lacked the ability to disable certain other options.

	* config/arm/arm-cpus.in (armv7): Add extension +nofp.
	(armv7-r): Add aliases vfpv3xd and vfpv3-d16.
	(armv8-m.main): Add option +nodsp.
	* config/arm/arm-cpu-cdata.h: Regenerated.

From-SVN: r249306
2017-06-16 21:06:36 +00:00
Richard Earnshaw
be5c4e0687 [arm] Rework multilib support
It looks like the fuchsia port relied on inheriting the multilib rules from
the bare-metal port (the t-arm-elf makefile fragment), but that has now been
rewritten on the assuption that the base architecture is ARMv4t; fuchsia
has a base architecture of ARMv7-a.

To account for this, I've cloned the original t-arm-elf rules into a
new makefile fragment t-fuchsia and arranged for that to be used when
targetting this system.

	* config/arm/t-fuchsia: New file.
	* config.gcc (arm*-*-fuchsia*): Use it.

From-SVN: r249305
2017-06-16 21:06:14 +00:00
Richard Earnshaw
e61a3cdd25 [arm] Rework multlib builds for symbianelf
Symbianelf used to build multilib for armv5t with softfp, but that
architecture doesn't really support floating point instructions.  This
patch reworks the multilib configuration to use armv5te as the base
when building for floating point.

I'm not sure just how useful the symbian port is these days, so this
has only been very lightly tested (checks that libgcc builds for all
multilib variants).  Perhaps we should consider deprecating this
config?

	* config/arm/t-symbian: Rewrite for new option infrastructure.

From-SVN: r249304
2017-06-16 21:06:07 +00:00
Richard Earnshaw
99d6bcf7ae [arm] reset all multilib variables
NB.  This configuration does not build in GCC-7 and doesn't build now either.

This patch resets a couple of multlib variables which previously were
not cleared.

It almost certainly needs further work to make it use the new option
framework correctly, but since the library configurations are already
clearly wrong, it's not clear what the changes need to be.  In
particular it tries to build a hard-float library for ARM7TDMI in both
ARM and thumb modes, but ARMv4t does not support any floating-point
instructions; furthermore, GCC has never supported a hard-float thumb1
library.

	* config/arm/t-phoenix (MULTILIB_REUSE): Clear variable.
	(MULTILIB_REQUIRED): Likewise.

From-SVN: r249303
2017-06-16 21:06:01 +00:00
Richard Earnshaw
e167433768 [arm] Ensure all multilib variables are reset
No real change, but for consistency reset all multilib related variables.

	* config/arm/t-linux-eabi (MULTILIB_EXCEPTIONS): Set to empty.
	(MULTILIB_RESUE): Likewise.
	(MULTILIB_MATCHES): Likewise.
	(MULTLIB_REQUIRED): Likewise.

From-SVN: r249302
2017-06-16 21:05:55 +00:00
Richard Earnshaw
d59ee314a8 [arm] Update t-rtems for new option framework
[This patch has only been fairly lightly tested (I've built a compiler
with all the relevant multilibs and smoke-tested a few combinations to
check that the tools still produce a sensible object file).]

This patch updates the RTEMS build to use the new option framework.
It tries as far as possible to keep the existing supported options,
but there are two necessary changes and one cleanup.  I've also
restructed the file slightly to make it slightly easier (IMO) to
understand.

Necessary changes:

1: ARMv4t does not support a hard-float ABI, the earliest supported
architecture with floating-point support is ARMv5te, so I've rebased
the original fpu/hard libraries to that revision of the architecture.

2: Similarly, the earliest version of the -m profile to support
hardware floating-point is armv7e-m (not armv7-m), so the base
architecture for m-profile with FP has been correspondingly updated.

Clean-up:

1: For greater consistency I've changed the
-mcpu=cortex-m7/-mfpu=fpv5-d16/-mhard-float to
-march=armv7e-m+fp.dp/-mhard-float.  The built-in -mcpu rewrite rules
take care of mapping the existing option sets onto the architecture
string to ensure compatibility.

Since the existing rule set does not contain any MULTILIB_REUSE rules,
I have not added any here this time around, but it would be worth the
maintainers of this file considering whether adding some rules would
make their toolchain more friendly to users.

Finally, I've added lines to reset all the multilib variables at the
head of the file.  I found during testing that some definitions from
t-arm-elf were leaking through and causing unexpected behviour.

	* config/arm/t-rtems: Rewrite for new option framework.

From-SVN: r249301
2017-06-16 21:05:46 +00:00
Richard Earnshaw
420938809a [arm] Rewrite t-rmprofile multilib specification
This is the R- & M-profile equivalent of the previous A-profile
multilib rewrite.  Additionally this patch adds some top-level rules
to help find suitable multilibs for general cases when certain
libraries are not built, or when building for legacy cores.

gcc:

	* config/arm/t-aprofile (v7_a_nosimd_variants, v7_a_simd_variants)
	(v7ve_nosimd_variatns, v7ve_vfpv3_simd_variants)
	(v7ve_vfpv4_simd_variants, v8_a_nosimd_variants, v8_a_simd_variants)
	(v8_1_a_simd_variants, v8_2_a_simd_variants): Move to ...
	* config/arm/t-multilib: ... here.
	(MULTILIB_OPTIONS): Add armv7 and armv7+fp architectures.
	(MULTILIB_MATCHES): Use armv7 libraries for armv7-r.  Also use for
	armv7-a and armv8*-a when A-profile libraries have not been built.
	* config/arm/t-rmprofile: Rewrite.

gcc/testsuite:
	* gcc.target/arm/multilib.exp (rmprofile): New tests when rm-profile
	multilibs have been built.

From-SVN: r249300
2017-06-16 21:05:35 +00:00
Richard Earnshaw
c5742a17ac [arm] Use -march=armv7-a+fp when testing hard-float
Some tests explicitly test with -march=armv7-a and -mfloat-abi=hard.
However, with the new -mfpu=auto code, this architectural specifiction
lacks any floating-point capabilities.  To rectify this, change the
architecture to armv7-a+fp.

gcc/testsuite:

	* gcc.dg/pr59418.c: On ARM, change architecture to armv7-a+fp.
	* gcc.target/arm/pr51915.c: Likewise.
	* gcc.target/arm/pr52006.c: Likewise.
	* gcc.target/arm/pr53187.c: Likewise.

From-SVN: r249299
2017-06-16 21:05:26 +00:00
Richard Earnshaw
fa0b638fed [arm] Allow explicit periods to be escaped in
The MULTILIB_REUSE mapping rules are built up using periods to
represent the placement of '=' signs in the command line syntax.  This
presents a problem if the option contains an explicit period because
that is translated unconditionally.  The result is that it is not
currently possible to write a reuse rule that would match the
ARMv8-M mainline architecture:

	-march=armv8-m.main

To fix this, this patch allows an explicit period to be escaped by writing
\. and by then preserving the period into the generated multilib header.

	* genmultilib (multilib_reuse): Allow an explicit period to be escaped
	with a backslash.  Remove the backslash after substituting unescaped
	periods.
	* doc/fragments.texi (MULTILIB_REUSE): Document it.

From-SVN: r249298
2017-06-16 21:05:08 +00:00
Richard Earnshaw
f0cd49c501 [arm] Explicitly set .fpu in cmse_nonsecure_call.S
This file is missing a .fpu directive and was relying on the compiler
driver passing through a -mfpu= command line option.  When the FPU is
auto, that will not be passed through correctly, so set something
suitable within the file itself.

libgcc:
	 * config/arm/cmse_nonsecure_call.S: Explicitly set the FPU.

From-SVN: r249297
2017-06-16 21:04:52 +00:00
Richard Earnshaw
93aa40fee6 [arm] Rewrite t-aprofile using new selector methodology
Now that the default FPU is 'auto' we can finally rewrite (and
simplify) the rules for mapping compiler options to multilibs.  We
no-longer need to know the specific CPU, since the driver will
construct a suitable -march flag for us; this greatly simplifies the
overall logic.  This patch rewrites the library list for A-profile
cores.  We use various Make extention rules to simplify the logic even
further.

A couple of minor tweaks to the configure script and to the main
driver ensures that we always know the setting of -mfloat-abi and
-marm/-mthumb.  Again, this helps simplify the logic further.  The
change to arm_target_thumb_only relies on the fact that this routine
is only called if neither -marm nor -mthumb has been previously
selected or specified by the user.

A new testsuite module is added to check the libraries generated.  The
new tests are only run if the compiler is configured with the relevant
multilibs enabled.

gcc:
	* config.gcc: (arm*-*-*): When building a-profile libraries, force
	the driver to pass through the default setting of -mfloat-abi.
	* common/config/arm/arm-common.c (arm_target_thumb_only): Return -marm
	rather than NULL.
	* config/arm/t-multilib (MULTILIB_REUSE): Initialize to empty.
	(all_feat_combs): New rule.
	(MULTILIB_OPTIONS): Use explicit ARM and Thumb directories.  Rework
	default libraries.
	* config/arm/t-aprofile: Rewrite.

gcc/testsuite:
	* gcc.target/arm/multilibs.exp: New file.

From-SVN: r249296
2017-06-16 21:04:41 +00:00
Richard Earnshaw
1138961024 [arm] Make 'auto' the default FPU selection option.
Finally, we can make 'auto' the default choice for the FPU option.  It's
still possible to override this during configure, but we will eventually
deprecate that, moving to the new cpu/architecture selection mechanism.

	* config/arm/arm.h (FPUTYPE_AUTO): Define.
	* config/arm/arm.c (arm_option_override): Use FPUTYPE_AUTO if the
	fpu is not specified by the user/command-line.
	* config/arm/bpabi.h (FPUTYPE_DEFAULT): Delete.
	* config/arm/netbsd-elf.h (FPUTYPE_DEFAULT): Delete.
	* config/arm/linux-elf.h (FPUTYPE_DEFAULT): Delete.
	* config/arm/vxworks.h (FPUTYPE_DEFAULT): Delete.
	* common/config/arm/arm-common.c (arm_canon_arch_option): Use
	FPUTYPE_AUTO insted of FPUTYPE_DEFAULT.

From-SVN: r249295
2017-06-16 21:04:23 +00:00
Richard Earnshaw
aaf8008ce7 [genmultilib] Update basic multilib configuration
The standard arm-eabi configuration comes with a basic set of multilibs that
are suitable mostly for simple testing of the compiler in various
configurations.  We try to keep the number of libraries build small so
that build times do not become too onerous.

Using the new auto-fp selection code we can now cover all supported
architectures except for those with single-precision only FP units with
just 4 multilibs.  This is done with the rewrite of t-arm-elf.  Now that we
canonicalize -mcpu into suitable -march definitions we don't need to match
CPU names to architectures any more; the driver will do this for us.

I also noticed whilst writing this patch that the existing MULTILIB_DEFAULTS
setting in the compiler was causing more problems than it was worth; and
furthermore was simply wrong if the compiler is ever configured with
--with-mode, --with-float or --with-endian.  The remaining options also
pertained to pre-eabi builds and aren't interesting today either.  It
seemed best to just delete the definition entirely.

	* config/arm/elf.h (MULTILIB_DEFAULTS): Delete.
	* config/arm/t-arm-elf: Rewritten.

From-SVN: r249294
2017-06-16 21:04:14 +00:00
Richard Earnshaw
2e17e31925 [arm] Make -mfloat-abi=softfp work when there are no
Before this patch series it wasn't really possible to not have an FPU;
it was always there, even if the hardware didn't really support it.
Now that we have -mfpu=auto, the concept of not having an FPU becomes
real.  Consequently, when the -mfloat-abi switch is set to softfp
doing the Right Thing is much more important.  In this case we have a
soft-float ABI, but can use FP instructions if they are available.
To support this we have to separate out TARGET_HARD_FLOAT into two
use cases: one where the instructions exist and one when they don't.
We preserve the original meaning of TARGET_HARD_FLOAT (but add an extra
check) of meaning that we are generating HW FP instructions, and add a
new macro for the special case when use of FP instructions is permitted,
but might not be available at this time (the distinction is important
because they might be enabled by an attribute during the compilation).
TARGET_SOFT_FLOAT continues to be the exact inverse of TARGET_HARD_FLOAT,
but we now define it as such.

	* config/arm/arm.h (TARGET_HARD_FLOAT): Also check that we
	have some floating-point instructions.
	(TARGET_SOFT_FLOAT): Define as inverse of TARGET_HARD_FLOAT.
	(TARGET_MAYBE_HARD_FLOAT): New macro.
	* config/arm/arm-builtins.c (arm_init_builtins): Use
	TARGET_MAYBE_HARD_FLOAT.
	* config/arm/arm.c (arm_option_override): Use TARGET_HARD_FLOAT_ABI.

From-SVN: r249293
2017-06-16 21:04:07 +00:00
Richard Earnshaw
0b97b8f84a [arm] Generate a canonical form for -march
This patch uses the driver and some spec rewrite rules to generate a
canonicalized form of the -march= option.  We want to do this for
several reasons, all relating to making multi-lib selection sane.

1) It can remove redundant extension options to produce a minimal
list.

2) The general syntax of the option permits a plethora of features,
these are permitted in any order.  Canonicalization ensures that there
is a single ordering of the options that are needed.

3) It can use additional options to remove extensions that aren't
relevant, such as removing all features that relate to the FPU when
use of that is disabled.

Once we have this information in a sensible form the multilib rules
can be vastly simplified making for much more understandable Makefile
fragments.

	* common/config/arm/arm-common.c: Define INCLUDE_LIST.
	(configargs.h): Include it.
	(arm_print_hint_for_fpu_option): New function.
	(arm_parse_fpu_option): New function.
	(candidate_extension): New class.
	(arm_canon_for_multilib): New function.
	* config/arm/arm.h (CANON_ARCH_SPEC_FUNCTION): New macro.
	(EXTRA_SPEC_FUNCTIONS): Add CANON_ARCH_SPEC_FUNCTION.
	(ARCH_CANONICAL_SPECS): New macro.
	(DRIVER_SELF_SPECS): Add ARCH_CANONICAL_SPECS.

From-SVN: r249292
2017-06-16 21:04:02 +00:00
Richard Earnshaw
a4af8a1046 [arm] Force a CPU default in the config args defaults
Currently if the user does not specify a default CPU or architecture
the compiler provieds no default values in the spec defaults.  We can
try to work from TARGET_CPU_DEFAULT but pulling that into the driver
is a bit crufty and doesn't really work well with the general
spec-processing model.  A better way is to ensure that with_cpu is
always set appropirately during configure.  To avoid problems with the
multilib fragment processing we defer this until after we have
processed any required fragments before selecting the default.

	* config.gcc (arm*-*-*): Ensure both target_cpu_cname and with_cpu
	are set after handling multilib fragments.  Set target_cpu_default2
	from with_cpu.

From-SVN: r249291
2017-06-16 21:03:55 +00:00
Richard Earnshaw
bf35d17a30 [arm] Allow new extended syntax CPU and architecture
This patch extends support for the new extended-style architecture
strings to configure and the target default options.  We validate any
options passed by the user to configure against the permitted
extensions for that CPU or architecture.

	* config.gcc (arm*-*-fucshia*): Set target_cpu_cname to the real
	cpu name.
	(arm*-*-*): Set target_cpu_default2 to a quoted string.
	* config/arm/parsecpu.awk (check_cpu): Validate any extension
	options.
	(check_arch): Likewise.
	* config/arm/arm.c (arm_configure_build_target): Handle
	TARGET_CPU_DEFAULT being a string constant.  Scan any feature
	options in the default.

From-SVN: r249290
2017-06-16 21:03:46 +00:00
Richard Earnshaw
357e1023c9 [arm] Allow CPU and architecture extensions to be
A follow up patch to this one will start to canonicalize options to
simplify generating multilib fragments.  This patch is enabling work
for that.  If we have extension options that duplicate other options
(done principally for back-wards compatibility purposes) we need to
ensure that just one of them will be used consistently when generating
a canonical form of the user-specified options.  We do this by
explicitly noting when an option is defined as an alias of another.

Another aspect of canonicalization is to enforce a strict order in
which the options are inspected, we do this by ensuring that no later
option examined can be a subset of an earlier option (add and remove
options are treated separtely).

It's practically impossible to check all this in parsecpu.awk since
that premits use of C macros in the ISA features list, so instead we
enforce the ordering with a selftest function in the compiler, which
is only run when self tests are enabled (it's not something that will
change every day, so this should be sufficient).

	* config/arm/arm-protos.h (cpu_arch_extension): Add field to record
	when an option is an alias of another.
	* config/arm/parsecpu.awk (optalias): New parser token.
	(gen_comm_data): Mark non-alias options as such.  Emit entries
	for extension aliases.
	* config/arm/arm-cpus.in (armv5e): Make vfpv2 an alias.
	(armv5te, armv5tej, armv6, armv6j, armv6k, armv6z): Likewise.
	(armv6kz, armv6zk, armv6t2): Likewise.
	(armv7): Make vfpv3-d16 an alias.
	(armv7-a): Make vfpv3-d16, neon and neon-vfpv3 aliases.  Sort in
	canonical order.
	(armv7ve): Make vfpv4-d16, neon-vfpv3 and neon-vfpv4 aliases.
	Sort in canonical order.
	(armv8-a): Sort in canonical order.
	(armv8.1-a, armv8.2-a):  Likewise.
	(generic-armv7-a): Make neon and neon-vfpv3 aliases.  Sort in
	canonical order.
	(cortex-a9): Sort in canonical order.
	* config/arm/arm.c (selftests.h): Include it.
	(arm_test_cpu_arch_data): New function.
	(arm_run_self_tests): New function.
	(TARGET_RUN_TARGET_SELFTESTS): Redefine.
	(targetm): Move declaration to the end of the file.
	* arm-cpu-cdata.h: Regenerated.

From-SVN: r249289
2017-06-16 21:03:39 +00:00
Richard Earnshaw
e53993efae [arm] Use standard option parsing code for detecting
Now that the standard CPU and architecture option parsing code is
available in the driver we can use the main CPU and architecture data
tables for driving the automatic enabling of Thumb code.

Doing this requires that the driver script tell the parser whether or
not the target string is a CPU name or an architecture, but beyond
that it is just standard use of the new capabilities.

We do, however, now get some error checking if the target isn't
recognized, when previously we just ignored unknown targets and hoped
that a later pass would pick up on this.

	* config/arm/arm.h (TARGET_MODE_SPECS): Add additional parameter to
	call to target_mode_check describing the type of option passed.
	* common/config/arm/arm-common.c (arm_arch_core_flag): Delete.
	(arm_target_thumb_only): Use arm_parse_arch_option_name or
	arm_parse_cpu_option_name to match parameters against list of
	available targets.
	* config/arm/parsecpu.awk (gen_comm_data): Don't generate
	arm_arch_core_flags data structure.
	* config/arm/arm-cpu_cdata.h: Regenerated.

From-SVN: r249288
2017-06-16 21:03:30 +00:00
Richard Earnshaw
435d12725b [arm] Move cpu and architecture option name parsing
This patch has no functional change.  The code used for parsing -mcpu,
-mtune and -march options is simply moved from arm.c arm-common.c.
The list of FPU options is also moved.  Subsequent patches will make
use of this within the driver.

Some small adjustments are needed as a consequence of moving the
definitions of the data objects to another object file, in that we
no-longer have direct access to the size of the object.

	* common/config/arm/arm-common.c (arm_initialize_isa): Moved here from
	config/arm/arm.c.
	(arm_print_hint_for_cpu_option): Likewise.
	(arm_print_hint_for_arch_option): Likewise.
	(arm_parse_cpu_option_name): Likewise.
	(arm_parse_arch_option_name): Likewise.
	* config/arm/arm.c (arm_identify_fpu_from_isa): Use the computed number
	of entries in the all_fpus list.
	* config/arm/arm-protos.h (all_architectures, all_cores): Declare.
	(arm_parse_cpu_option_name): Declare.
	(arm_parse_arch_option_name): Declare.
	(arm_parse_option_features): Declare.
	(arm_intialize_isa): Declare.
	* config/arm/parsecpu.awk (gen_data): Move CPU and architecture
	data tables to ...
	(gen_comm_data): ... here.  Make definitions non-static.
	* config/arm/arm-cpu-data.h: Regenerated.
	* config/arm/arm-cpu-cdata.h: Regenerated.

From-SVN: r249287
2017-06-16 21:03:17 +00:00
Richard Earnshaw
050809ed8a [arm] Split CPU, architecture and tuning data tables.
The driver really needs to handle some canonicalization of the new
-mcpu and -march options in order to make multilib selection
tractable.  This will require moving much of the logic to parse the
new options into the common code file.  However, the tuning data
definitely does not want to be there as it is very specific to the
compiler passes.  To facilitate this we need to split up the generated
configuration data into architectural and tuning related tables.

This patch starts that process, but does not yet move any code out of
the compiler backend.  Since I'm reworking all that code I took the
opportunity to also separate out the CPU data tables from the
architecture data tables.  Although they are related, there is a lot
of redundancy in the CPU options that is best handled by simply
indirecting to the architecture entry.

	* config/arm/arm-protos.h (arm_build_target): Remove arch_core.
	(cpu_arch_extension): New structure.
	(cpu_arch_option, arch_option, cpu_option): New structures.
	* config/arm/parsecpu.awk (gen_headers): Build an enumeration of
	architecture types.
	(gen_data): Generate new format data tables.
	* config/arm/arm.c (cpu_tune): New structure.
	(cpu_option, processors): Delete.
	(arm_print_hint_for_core_or_arch): Delete.  Replace with ...
	(arm_print_hint_for_cpu_option): ... this and ...
	(arm_print_hint_for_arch_option): ... this.
	(arm_parse_arch_cpu_name): Delete.  Replace with ...
	(arm_parse_cpu_option_name): ... this and ...
	(arm_parse_arch_option_name): ... this.
	(arm_unrecognized_feature): Change type of target parameter to
	cpu_arch_option.
	(arm_parse_arch_cpu_features): Delete.  Replace with ...
	(arm_parse_option_features): ... this.
	(arm_configure_build_target): Rework to use new configuration data
	tables.
	(arm_print_tune_info): Rework for new configuration data tables.
	* config/arm/arm-cpu-data.h: Regenerated.
	* config/arm/arm-cpu.h: Regenerated.

From-SVN: r249286
2017-06-16 21:03:08 +00:00
Richard Earnshaw
9ef88abef4 [build] Make sbitmap code available to the driver
The ARM option parsing code uses sbitmap data structures to manage
features and upcoming patches will shortly need to use these bitmaps
within the driver.  This patch moves sbitmap.o from OBJS to
OBJS-libcommon to facilitate this.

The patch has no impact on targets that don't need this functionality,
since the object is part of an archive and will only be extracted if
needed.

	* Makefile.in (OBJS): Move sbitmap.o from here ...
	(OBJS-libcommon): ... to here.

From-SVN: r249285
2017-06-16 21:02:59 +00:00
Richard Earnshaw
e87afe54b8 [arm] Add default FPUs for CPUs.
This patch adds the default CPUs for each cpu and provides options for
changing the FPU variant when appropriate.

It turns out to be easier to describe removal options using general
mask operations that disable a concept rather than specific bits.
Sometimes the helper definitions for enabling a feature are not excat
duals when it comes to disabling them - for example, +simd forcibly
turns on double-precision capabilities in the FPU, but disabling just
simd (+nosimd) should not forcibly disable that.

	* config/arm/arm-isa.h (ISA_ALL_FPU_INTERNAL): Renamed from ISA_ALL_FPU.
	(ISA_ALL_CRYPTO): New macro.
	(ISA_ALL_SIMD): New macro
	(ISA_ALL_FP): New macro.
	* config/arm/arm.c (fpu_bitlist): Update initializer.
	* config/arm/arm-cpus.in: Use new ISA_ALL macros to disable crypto,
	simd or fp.
	(arm9e): Add fpu.  Add option for nofp
	(arm946e-s, arm966e-s, arm968e-s, arm10e, arm1020e, arm1022e): Likewise.
	(arm926ej-s, arm1026ej-s): Likewise.
	(generic-armv7-a): Add fpu.  Add options for simd, vfpv3, vfpv3-d16,
	vfpv3-fp16, vfpv3-d16-fp16, vfpv4, vfpv4-d16, neon, neon-vfp3,
	neon-fp16, neon-vfpv4, nofp and nosimd.
	(cortex-a5, cortex-a7): Add fpu.  Add options for nosimd and nofp.
	(cortex-a8): Add fpu.  Add option for nofp.
	(cortex-a9): Add fpu.  Add options for nosimd and nofp.
	(cortex-a12, cortex-a15, cortex-a17): Add fpu.  Add option for nofp.
	(cortex-r4f): Add fpu.
	(cortex-r5): Add fpu.  Add options for nofp.dp and nofp.
	(cortex-r7): Use idiv option from architecture.  Add fpu.  Add option
	for nofp.
	(cortex-r8): Likewise.
	(cortex-m4): Add fpu.  Add option for nofp.
	(cortex-a15.cortex-a7): Add fpu.  Add option for nofp.
	(cortex-a17.cortex-a7): Likewise.
	(cortex-a32): Add fpu.  Add options for crypto and nofp.
	(cortex-a35, cortex-a53): Likewise.
	(cortex-a57): Add fpu.  Add option for crypto.
	(cortex-a72, cortex-a73): Likewise.
	(exynos-m1): Likewise.
	(cortex-a57.cortex-a53, cortex-a72.cortex-a53): Likewise.
	(cortex-a73.cortex-a35, cortex-a73.cortex-a53): Likewise.
	(cortex-m33): Add fpu.  Add option for nofp.
	* config/arm/arm-cpu-cdata.h: Regenerated
	* config/arm/arm-cpu-data.h: Regenerated.

From-SVN: r249284
2017-06-16 21:02:52 +00:00
Richard Earnshaw
76d7d53349 [arm] Add architectural options
This patch adds the currently supported architecture options to the
individual architectures.  For floating point and SIMD we only permit
variants that the relevant versions of the architecture permit.  We also
add short-hand versions (+fp, +simd, etc) that allows the user to
describe using floating point without having to know the precise version
of the floating point sub-architecture that that architecture requires.

In a small number of cases we need to provide more precise versions of the
floating point architecture.  In those cases we permit traditional -mfpu
style names in the architecture description.

	* arm-cpus.in (armv5e): Add options fp, vfpv2 and nofp.
	(armv5te, armv5tej): Likewise.
	(armv6, armv6j, armv6k, armv6z, armv6kz, armv6zk, armv6t2): Likewise.
	(armv7): Add options fp and vfpv3-d16.
	(armv7-a): Add options fp, simd, vfpv3, vfpv3-d16, vfpv3-d16-fp16,
	vfpv3-fp16, vfpv4, vfpv4-d16, neon, neon-vfpv3, neon-fp16, neon-vfpv4,
	nofp and nosimd.
	(armv7ve): Likewise.
	(armv7-r): Add options fp, fp.sp, idiv, nofp and noidiv.
	(armv7e-m): Add options fp, fpv5, fp.dp and nofp.
	(armv8-a): Add nocrypto option.
	(armv8.1-a, armv8.2-a): Likewise.
	(armv8-m.main): add options fp, fp.dp and nofp.

From-SVN: r249283
2017-06-16 21:02:19 +00:00
Richard Earnshaw
250e088bc4 [arm] Allow +opt on arbitrary cpu and architecture
This is the main patch to provide the infrastructure for adding
feature extensions to CPU and architecture specifications.  It does not,
however, add all the extensions that we intend to support (just a small
number to permit some basic testing).  Now, instead of having specific
entries in the architecture table for variants such as armv8-a+crc, the
crc extension is specified as an optional component of the armv8-a
architecture entry.  Similar control can be added to CPU option names.
In both cases the list of permitted options is controlled by the main
architecture or CPU name to prevent arbitrary cross-products of options.

	* config/arm/arm-cpus.in (armv8-a): Add options crc, simd crypto and
	nofp.
	(armv8-a+crc): Delete.
	(armv8.1-a): Add options simd, crypto and nofp.
	(armv8.2-a): Add options fp16, simd, crypto and nofp.
	(armv8.2-a+fp16): Delete.
	(armv8-m.main): Add option dsp.
	(armv8-m.main+dsp): Delete.
	(cortex-a8): Add fpu.  Add nofp option.
	(cortex-a9): Add fpu.  Add nofp and nosimd options.
	* config/arm/parsecpu.awk (gen_data): Generate option tables and
	link to main cpu and architecture data structures.
	(gen_comm_data): Only put isa attributes from the main architecture
	in common tables.
	(option): New statement for architecture and CPU entries.
	* arm.c (struct cpu_option): New structure.
	(struct processors): Add entry for options.
	(arm_unrecognized_feature): New function.
	(arm_parse_arch_cpu_name): Ignore any characters after the first
	'+' character.
	(arm_parse_arch_cpu_feature): New function.
	(arm_configure_build_target): Separate out any CPU and architecture
	features and parse separately.  Don't error out if -mfpu=auto is
	used with only an architecture string.
	(arm_print_asm_arch_directives): New function.
	(arm_file_start): Call it.
	* config/arm/arm-cpu-cdata.h: Regenerated.
	* config/arm/arm-cpu-data.h: Likewise.
	* config/arm/arm-tables.opt: Likewise.

From-SVN: r249282
2017-06-16 21:02:10 +00:00
Richard Earnshaw
53c5aa9909 [arm] Don't pass -mfpu=auto through to the assembler.
The assembler doesn't understand -mfpu=auto.  The easiest way to handle this
is to surpress this value from being passed through, while still passing
through legacy values.

	* config/arm/elf.h (ASM_SPEC): Only pass -mfpu through to the
	assembler when it is not -mfpu=auto.

From-SVN: r249281
2017-06-16 21:01:51 +00:00
Richard Earnshaw
867944533b [arm] Rewrite -march and -mcpu options for passing to
The assembler does not understand all the '+' options accepted by the
compiler.  The best solution to this is to simply strip the extensions
and just pass the raw architecture or cpu name through to the
assembler.  We will use .arch and .arch_extension directives anyway to
turn on or off individual features.  We already do something similar
for big.little combinations and this just extends this principle a bit
further.  This patch also fixes a possible bug by ensuring that the
limited string copy is correctly NUL-terminated.

While messing with this code I've also taken the opportunity to clean up
the duplicate definitions of EXTRA_SPEC_FUNCTIONS by moving it outside of
the ifdef wrapper.

	* config/arm/arm.h (BIG_LITTLE_SPEC): Delete macro.
	(ASM_REWRITE_SPEC_FUNCTIONS): New macro.
	(BIG_LITTLE_CPU_SPEC_FUNCTIONS): Delete macro.
	(ASM_CPU_SPEC): Rewrite.
	(MCPU_MTUNE_NATIVE_FUNCTIONS): New macro.
	(EXTRA_SPEC_FUNCTIONS): Move outside of ifdef.  Use
	MCPU_MTUNE_NATIVE_FUNCTIONS and ASM_REWRITE_SPEC_FUNCTIONS.  Remove
	reference to BIG_LITTLE_CPU_SPEC_FUNCTIONS.
	* common/config/arm/arm-common.c (arm_rewrite_selected_cpu): Ensure
	copied string is NUL-terminated.  Also strip any characters prefixed
	by '+'.
	(arm_rewrite_selected_arch): New function.
	(arm_rewrite_march): New function.

From-SVN: r249280
2017-06-16 21:01:29 +00:00
Richard Earnshaw
80448ef602 [arm] Use strings for -march, -mcpu and -mtune options
In order to support more complex specifications for cpus and architectures
we need to move away from using enumerations to represent the set of
permitted options.  This basic change just moves the option parsing
infrastructure over to that, but changes nothing more beyond generating
a hint when the specified option does not match a known target (previously
the help option was able to print out all the permitted values, but we
can no-longer do that.

	* config/arm/arm.opt (x_arm_arch_string): New TargetSave option.
	(x_arm_cpu_string, x_arm_tune_string): Likewise.
	(march, mcpu, mtune): Convert to string-based options.
	* config/arm/arm.c (arm_print_hint_for_core_or_arch): New function.
	(arm_parse_arch_cpu_name): New function.
	(arm_configure_build_target): Use arm_parse_arch_cpu_name to
	identify selected architecture or CPU.
	(arm_option_save): New function.
	(TARGET_OPTION_SAVE): Redefine.
	(arm_option_restore): Restore string options.
	(arm_option_print): Print string options.

From-SVN: r249279
2017-06-16 21:01:22 +00:00
Martin Sebor
b3d8d88efa PR tree-optimization/80934 - bzero should be assumed not to escape pointer argument
PR tree-optimization/80934 - bzero should be assumed not to escape pointer argument
PR tree-optimization/80933 - redundant bzero/bcopy calls not eliminated

gcc/ChangeLog:

	PR tree-optimization/80933
	PR tree-optimization/80934
	* builtins.c (fold_builtin_3): Do not handle bcmp here.
	* gimple-fold.c (gimple_fold_builtin_bcmp): New function.
	(gimple_fold_builtin_bcopy, gimple_fold_builtin_bzero): Likewise.
	(gimple_fold_builtin): Call them.

gcc/testsuite/ChangeLog:

	PR tree-optimization/80933
	PR tree-optimization/80934
	* gcc.dg/fold-bcopy.c: New test.
	* gcc.dg/tree-ssa/ssa-dse-30.c: Likewise..
	* gcc.dg/tree-ssa/alias-36.c: Likewise.
	* gcc/testsuite/gcc.dg/pr79214.c: Adjust.
	* gcc.dg/tree-prof/val-prof-7.c: Likewise.
	* gcc.dg/Wsizeof-pointer-memaccess1.c: Likewise.
	* gcc.dg/builtins-nonnull.c: Likewise.

From-SVN: r249278
2017-06-16 14:52:03 -06:00
Jan Hubicka
aa11163b18 gimple-ssa-isolate-paths.c (isolate_path): Set edge leading to path as unlikely; update profile.
* gimple-ssa-isolate-paths.c (isolate_path): Set edge leading to path
	as unlikely; update profile.

From-SVN: r249277
2017-06-16 19:02:46 +00:00
Jan Hubicka
8d71d7cd02 predict.c (force_edge_cold): Handle declaring edges impossible more aggresively.
* predict.c (force_edge_cold): Handle declaring edges impossible
	more aggresively.

From-SVN: r249276
2017-06-16 19:02:11 +00:00
Jan Hubicka
8fb0ae8223 tree-ssa-loop-ivcanon.c (remove_exits_and_undefined_stmts): Update profile.
* tree-ssa-loop-ivcanon.c (remove_exits_and_undefined_stmts): Update
	profile.
	(try_unroll_loop_completely): Fix reporting.

From-SVN: r249275
2017-06-16 19:01:39 +00:00
Jan Hubicka
deca6d6072 * tree-ssa-tail-merge.c (replace_block_by): Fix profile updating.
From-SVN: r249274
2017-06-16 19:01:01 +00:00
Nathan Sidwell
4086ef7d89 * pt.c (tsubst_baselink): Fix & clarify formatting.
From-SVN: r249273
2017-06-16 18:38:28 +00:00
James Greenhalgh
56960fd6d1 [Patch ARM] Fix PR71778
gcc/

	PR target/71778
	* config/arm/arm-builtins.c (arm_expand_builtin_args): Return TARGET
	if given a non-constant argument for an intrinsic which requires a
	constant.

gcc/testsuite/

	PR target/71778
	* gcc.target/arm/pr71778.c: New.

From-SVN: r249272
2017-06-16 17:29:56 +00:00
Jan Hubicka
ec73e54d0a * gcc.dg/tree-ssa/ssa-lim-11.c: Disable branch prediction.
From-SVN: r249271
2017-06-16 17:19:50 +00:00
Jan Hubicka
28ae04d46e profile.c (compare_freqs): New function.
* profile.c (compare_freqs): New function.
	(branch_prob): Sort edge list.
	(find_spanning_tree): Assume that the list is priority sorted.

From-SVN: r249270
2017-06-16 16:08:36 +00:00
Nathan Sidwell
e249fcad3a cp-tree.h (build_this_parm, [...]): Add FN parm.
gcc/cp/
	* cp-tree.h (build_this_parm, cp_build_parm_decl)
	build_artificial_parm): Add FN parm.
	* decl.c (start_cleanup_fn): Adjust.
	(build_this_parm): Add FN parm, pass it through.
	(grokfndecl): Adjust parm building.
	* decl2.c (cp_build_parm_decl): Add FN parm, set context.
	(build_artificial_parm): Add FN parm, pass through.
	(maybe_retrofit_in_chrg): Adjust parm building.
	(start_static_storage_duration_function): Likwise.
	* lambda.c (maybe_aadd_lambda_conv_op): Likewise.
	* method.c (implicitly_declare_fn): Likewise.
	* parser.c (inject_this_parameter): Likewise.

	libcc1/
	* libcp1plugin.cc (plugin_build_decl): Adjust parm building.
(--This line, and those below, will be ignored--

M    gcc/cp/parser.c
M    gcc/cp/ChangeLog
M    gcc/cp/decl.c
M    gcc/cp/lambda.c
M    gcc/cp/cp-tree.h
M    gcc/cp/method.c
M    gcc/cp/decl2.c
M    libcc1/libcp1plugin.cc
M    libcc1/ChangeLog

From-SVN: r249268
2017-06-16 15:42:33 +00:00
Jonathan Wakely
78a8b676f1 Add std::get_deleter overload with correct signature
* include/bits/shared_ptr.h (get_deleter): Add overload matching
	standard signature.
	* include/bits/shared_ptr_base.h (__shared_ptr): Declare new
	get_deleter overload as a friend.
	* testsuite/20_util/shared_ptr/misc/get_deleter.cc: New.

From-SVN: r249267
2017-06-16 16:20:14 +01:00
Nathan Sidwell
d7b11178c4 Symbol tables are insert only.
* cp-tree.h (default_hash_traits <lang_identifier *>): Don't
	derive from pointer_hash.  Make undeletable.

From-SVN: r249266
2017-06-16 14:54:39 +00:00
Nathan Sidwell
ba27a39d37 class.c (resort_type_method_vec): Avoid potential unsigned overflow.
* class.c (resort_type_method_vec): Avoid potential unsigned
	overflow.

From-SVN: r249265
2017-06-16 14:49:35 +00:00