Patch in the bottom adds support of IA MCU psABI to libgcc (enables
soft-fp) and libdecnumber (enables it for IA MCU).
config/
* dfp.m4 (enable_decimal_float): Also set to yes for
i?86*-*-elfiamcu target.
gcc/
* configure: Regenerated.
libdecnumber/
* configure: Regenerated.
libgcc/
* config.host: Support i[34567]86-*-elfiamcu target.
* config/t-softfp-sfdftf: New file.
* config/i386/32/t-iamcu: Likewise.
* configure: Regenerated.
From-SVN: r225198
2015-05-28 Andreas Tobler <andreast@gcc.gnu.org>
* configure.ac: Move the atoll check from AC_CHECK_FUNCS to
gcc_AC_CHECK_DECLS.
* configure: Regenerate.
From-SVN: r223847
PR target/65351
config/
* mh-darwin: Only apply -mdynamic-no-pic for m32 Darwin when the compiler in
use supports -mno-dynamic-no-pic.
* picflag.m4: Only append -mno-dynamic-no-pic for Darwin when -mdynamic-no-pic
is present in CFLAGS.
libiberty/
* configure: Regenerate.
libada/
* configure: Regenerate.
libgcc/
* configure: Regenerate.
gcc/
* configure: Regenerate.
Co-Authored-By: Iain Sandoe <iain@codesourcery.com>
From-SVN: r221967
PR bootstrap/64561
* configure.ac (HAVE_LD_PIE_COPYRELOC): Update Linux/x86-64 linker
test for PIE with copy reloc.
* configure: Regenerated.
From-SVN: r219460
Normally, with -fPIE/-fpie, GCC accesses globals that are extern to the
module using the GOT. This is two instructions, one to get the address
of the global from the GOT and the other to get the value. If it turns
out that the global gets defined in the executable at link-time, it still
needs to go through the GOT as it is too late then to generate a direct
access.
Examples:
foo.cc
------
int a_glob;
int main () {
return a_glob; // defined in this file
}
With -O2 -fpie -pie, the generated code directly accesses the global via
PC-relative insn:
5e0 <main>:
mov 0x165a(%rip),%eax # 1c40 <a_glob>
foo.cc
------
extern int a_glob;
int main () {
return a_glob; // defined in this file
}
With -O2 -fpie -pie, the generated code accesses global via GOT using
two memory loads:
6f0 <main>:
mov 0x1609(%rip),%rax # 1d00 <_DYNAMIC+0x230>
mov (%rax),%eax
This is true even if in the latter case the global was defined in the
executable through a different file.
Some experiments on google benchmarks shows that the extra memory loads
affects performance by 1% to 5%.
Solution - Copy Relocations:
When the linker supports copy relocations, GCC can always assume that
the global will be defined in the executable. For globals that are truly
extern (come from shared objects), the linker will create copy relocations
and have them defined in the executable. Result is that no global access
needs to go through the GOT and hence improves performance.
This optimization only applies to undefined, non-weak global data.
Undefined, weak global data access still must go through the GOT.
This patch checks if linker supports PIE with copy reloc, which is
enabled in gold and bfd linker in bininutils 2.25, at configure time
and enables this optimization if the linker support is available.
gcc/
* configure.ac (HAVE_LD_PIE_COPYRELOC): Defined to 1 if
Linux/x86-64 linker supports PIE with copy reloc.
* config.in: Regenerated.
* configure: Likewise.
* config/i386/i386.c (legitimate_pic_address_disp_p): Allow
pc-relative address for undefined, non-weak, non-function
symbol reference in 64-bit PIE if linker supports PIE with
copy reloc.
* doc/sourcebuild.texi: Document pie_copyreloc target.
gcc/testsuite/
* gcc.target/i386/pie-copyrelocs-1.c: New test.
* gcc.target/i386/pie-copyrelocs-2.c: Likewise.
* gcc.target/i386/pie-copyrelocs-3.c: Likewise.
* gcc.target/i386/pie-copyrelocs-4.c: Likewise.
* lib/target-supports.exp (check_effective_target_pie_copyreloc):
New procedure.
Co-Authored-By: H.J. Lu <hongjiu.lu@intel.com>
From-SVN: r218397
gcc/
* configure.ac: When checking for MIPS .module support ensure that
o32 FPXX is supported to avoid a second configure check.
* configure: Regenerate.
From-SVN: r217939
* configure: Regenerate.
* configure.ac (--enable-as-accelerator-for)
(--enable-offload-targets): New configure options.
gcc/
* Makefile.in (real_target_noncanonical, accel_dir_suffix)
(enable_as_accelerator): New variables substituted by configure.
(libsubdir, libexecsubdir, unlibsubdir): Tweak for the possibility of
being configured as an offload compiler.
(DRIVER_DEFINES): Pass new defines DEFAULT_REAL_TARGET_MACHINE and
ACCEL_DIR_SUFFIX.
(install-cpp, install-common, install_driver, install-gcc-ar): Do not
install for the offload compiler.
* config.in: Regenerate.
* configure: Regenerate.
* configure.ac (real_target_noncanonical, accel_dir_suffix)
(enable_as_accelerator): Compute new variables.
(ACCEL_COMPILER): Define if the compiler is built as the accel compiler.
(OFFLOAD_TARGETS): List of target names suitable for offloading.
(ENABLE_OFFLOADING): Define if list of offload targets is not empty.
gcc/cp/
* Make-lang.in (c++.install-common): Do not install for the offload
compiler.
gcc/doc/
* install.texi (Options specification): Document
--enable-as-accelerator-for and --enable-offload-targets.
gcc/fortran/
* Make-lang.in (fortran.install-common): Do not install for the offload
compiler.
libgcc/
* Makefile.in (crtoffloadbegin$(objext)): New rule.
(crtoffloadend$(objext)): Likewise.
* configure: Regenerate.
* configure.ac (accel_dir_suffix): Compute new variable.
(extra_parts): Add crtoffloadbegin.o and crtoffloadend.o
if enable_offload_targets is not empty.
* offloadstuff.c: New file.
libgomp/
* config.h.in: Regenerate.
* configure: Regenerate.
* configure.ac: Check for libdl, required for plugin support.
(PLUGIN_SUPPORT): Define if plugins are supported.
(enable_offload_targets): Support Intel MIC targets.
(OFFLOAD_TARGETS): List of target names suitable for offloading.
lto-plugin/
* Makefile.am (libexecsubdir): Tweak for the possibility of being
configured for offload compiler.
(accel_dir_suffix, real_target_noncanonical): New variables substituted
by configure.
* Makefile.in: Regenerate.
* configure: Regenerate.
* configure.ac (accel_dir_suffix, real_target_noncanonical): Compute new
variables.
Co-Authored-By: Andrey Turetskiy <andrey.turetskiy@intel.com>
Co-Authored-By: Ilya Verbin <ilya.verbin@intel.com>
Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>
From-SVN: r217485
This patch implements support for TARGET_ATOMIC_ASSIGN_EXPAND_FENV for
powerpc*-*-linux* soft-float and e500, provided GCC is configured for
glibc 2.19 or later on the target.
New functions __atomic_feholdexcept, __atomic_feclearexcept and
__atomic_feupdateenv were added (to libc) in that glibc version (for
powerpc soft-float / e500 only) in order to support this part of C11.
For soft-float, libc functions are needed because the floating-point
exception state is in TLS variables in libc that aren't directly
accessible outside of glibc. For e500, they are also needed because
of the prctl syscalls involved in controlling trapping for exceptions
and informing the kernel when certain exception flags have been
cleared. The actual implementation in GCC is a straightforward matter
of calling those functions.
Tested with no regressions for cross to powerpc-linux-gnu
(soft-float); the c11-atomic-exec-5.c results go from FAIL to PASS.
* configure.ac (TARGET_GLIBC_MAJOR, TARGET_GLIBC_MINOR): Define
macros.
* configure, config.h.in: Regenerate.
* config/rs6000/linux.h [TARGET_GLIBC_MAJOR > 2 ||
(TARGET_GLIBC_MAJOR == 2 && TARGET_GLIBC_MINOR >= 19)]
(RS6000_GLIBC_ATOMIC_FENV): New macro.
* config/rs6000/linux64.h [TARGET_GLIBC_MAJOR > 2 ||
(TARGET_GLIBC_MAJOR == 2 && TARGET_GLIBC_MINOR >= 19)]
(RS6000_GLIBC_ATOMIC_FENV): New macro.
* config/rs6000/rs6000.c (atomic_hold_decl, atomic_clear_decl)
(atomic_update_decl): New static variables.
(rs6000_atomic_assign_expand_fenv) [RS6000_GLIBC_ATOMIC_FENV]:
Generate calls to __atomic_feholdexcept, __atomic_feclearexcept
and __atomic_feupdateenv for soft-float and no-FPRs.
From-SVN: r217040
2014-10-27 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* aclocal.m4: New file.
* callbacks.cc: New file.
* callbacks.hh: New file.
* cc1plugin-config.h.in: New file.
* configure: New file.
* configure.ac: New file.
* connection.cc: New file.
* connection.hh: New file.
* findcomp.cc: New file.
* findcomp.hh: New file.
* libcc1.cc: New file.
* libcc1plugin.sym: New file.
* libcc1.sym: New file.
* Makefile.am: New file.
* Makefile.in: New file.
* marshall.cc: New file.
* marshall.hh: New file.
* names.cc: New file.
* names.hh: New file.
* plugin.cc: New file.
* rpc.hh: New file.
* status.hh: New file.
2014-10-27 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* gcc-c-fe.def: New file.
* gcc-c-interface.h: New file.
* gcc-interface.h: New file.
2014-10-27 Phil Muldoon <pmuldoon@redhat.com>
Tom Tromey <tromey@redhat.com>
* c-tree.h (enum c_oracle_request): New.
(c_binding_oracle_function): New typedef.
(c_binding_oracle, c_pushtag, c_bind): Declare.
* c-decl.c (c_binding_oracle): New global.
(I_SYMBOL_CHECKED): New macro.
(i_symbol_binding): New function.
(I_SYMBOL_BINDING, I_SYMBOL_DECL): Redefine.
(I_TAG_CHECKED): New macro.
(i_tag_binding): New function.
(I_TAG_BINDING, I_TAG_DECL): Redefine.
(I_LABEL_CHECKED): New macro.
(i_label_binding): New function.
(I_LABEL_BINDING, I_LABEL_DECL): Redefine.
(c_print_identifier): Save and restore c_binding_oracle.
(c_pushtag, c_bind): New functions.
2014-10-27 Phil Muldoon <pmuldoon@redhat.com>
Tom Tromey <tromey@redhat.com>
* aclocal.m4, configure: Rebuild.
* Makefile.in (aclocal_deps): Add gcc-plugin.m4.
* configure.ac: Use GCC_ENABLE_PLUGINS.
* stor-layout.c (finish_bitfield_layout): Now public. Change
argument type to 'tree'.
(finish_record_layout): Update.
* stor-layout.h (finish_bitfield_layout): Declare.
2014-10-27 Tom Tromey <tromey@redhat.com>
* gcc-plugin.m4: New file.
2014-10-27 Phil Muldoon <pmuldoon@redhat.com>
Tom Tromey <tromey@redhat.com>
* Makefile.def: Add libcc1 to host_modules.
* configure.ac (host_tools): Add libcc1.
* Makefile.in, configure: Rebuild.
From-SVN: r216748
gcc/
* configure: Regenerate.
* configure.ac: Move the test for section attribute specifier "e" in GAS
out to all i[34567]86-*-* | x86_64-*-* targets and add --fatal-warnings.
* langhooks.c (lhd_begin_section): Set SECTION_EXCLUDE flag.
* varasm.c (default_elf_asm_named_section): Guard SECTION_EXCLUDE with
ifdef HAVE_GAS_SECTION_EXCLUDE.
From-SVN: r216442
* configure.ac (target_header_dir): Move block defining
this to before the block setting inhibit_libc.
(inhibit_libc): When considering $with_headers, just
check it it's explicitly "no". If not, also check if
$target_header_dir/stdio.h is present. If not, set
inhibit_libc=true.
* configure: Regenerate.
From-SVN: r215439
2014-06-04 Richard Biener <rguenther@suse.de>
* configure.ac: Check whether the underlying type of int64_t
is long or long long.
* configure: Regenerate.
* config.in: Likewise.
* hwint.h (HOST_WIDE_INT): Match the underlying type of int64_t.
(HOST_WIDE_INT_PRINT_*): Define in terms of PRI*64.
From-SVN: r211228
2014-05-26 Richard Biener <rguenther@suse.de>
libcpp/
* configure.ac: Remove long long and __int64 type checks,
add check for uint64_t and fail if that wasn't found.
* include/cpplib.h (cpp_num_part): Use uint64_t.
* config.in: Regenerate.
* configure: Likewise.
gcc/
* configure.ac: Drop __int64 type check. Insist that we
found uint64_t and int64_t.
* hwint.h (HOST_BITS_PER___INT64): Remove.
(HOST_BITS_PER_WIDE_INT): Define to 64 and remove
__int64 case.
(HOST_WIDE_INT_PRINT_*): Remove 32bit case.
(HOST_WIDEST_INT*): Define to HOST_WIDE_INT*.
(HOST_WIDEST_FAST_INT): Remove __int64 case.
* vmsdbg.h (struct _DST_SRC_COMMAND): Use int64_t
for dst_q_src_df_rms_cdt.
* configure: Regenerate.
* config.in: Likewise.
From-SVN: r210928
2014-05-20 Richard Biener <rguenther@suse.de>
gcc/
* config.gcc: Remove need_64bit_hwint.
* configure.ac: Do not define NEED_64BIT_HOST_WIDE_INT.
* hwint.h: Do not check NEED_64BIT_HOST_WIDE_INT but assume
it to be true.
* config.in: Regenerate.
* configure: Likewise.
libcpp/
* configure.ac: Copy gcc logic of detecting a 64bit type.
Remove HOST_WIDE_INT define.
* include/cpplib.h: typedef cpp_num_part to a 64bit type,
similar to how hwint.h does it.
* config.in: Regenerate.
* configure: Likewise.
From-SVN: r210632
H.J. Lu
Jack Howarth
Andreas Krebbel
Andreas Tobler
H.J. Lu
Jason Merrill
Gregor Richards
Yvan Roux
Alan Modra
Kyrylo Tkachov
Jakub Jelinek
Georg-Johann Lay
Trevor Saunders
Eric Botcazou
Sriraman Tallam
Tobias Burnus
John David Anglin
Matthew Fortune
Bernd Schmidt
David Malcolm
Francois-Xavier Coudert
Joseph Myers
Phil Muldoon
Ilya Verbin
Thomas Schwinge
Hans-Peter Nilsson
Rainer Orth
Roman Gareev
Mike Stump
Richard Biener
John Marino