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Add --disable-tm-clone-registry libgcc configure option.

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This patch adds libgcc configuration option to disable TM clone 
registry. This option helps to reduce code size for embedded targets 
which do not need transactional memory support.

	gcc/
	* doc/install.texi: Document --disable-tm-clone-registry.
	libgcc/
	* Makefile.in (USE_TM_CLONE_REGISTRY): New.
	(CRTSTUFF_CFLAGS): Use USE_TM_CLONE_REGISTRY.
	* configure.ac: Add --disable-tm-clone-registry option.
	* configure: Regenerate.

From-SVN: r272769
This commit is contained in:
Ilia Diachkov 2019-06-27 23:41:03 +00:00 committed by Jim Wilson
parent 7ffc7de55b
commit 5a4602805e
6 changed files with 44 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2019-06-27 Ilia Diachkov <ilia.diachkov@optimitech.com>
* doc/install.texi: Document --disable-tm-clone-registry.
2019-06-27 Jakub Jelinek <jakub@redhat.com>
PR c++/91024

5
gcc/doc/install.texi
View File

@ -1284,6 +1284,11 @@ assumptions made by the configure test are incorrect.
Specify that the target does not support TLS.
This is an alias for @option{--enable-tls=no}.
@item --disable-tm-clone-registry
Disable TM clone registry in libgcc. It is enabled in libgcc by default.
This option helps to reduce code size for embedded targets which do
not use transactional memory.
@item --with-cpu=@var{cpu}
@itemx --with-cpu-32=@var{cpu}
@itemx --with-cpu-64=@var{cpu}

7
libgcc/ChangeLog
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@ -1,3 +1,10 @@
2019-06-27 Ilia Diachkov <ilia.diachkov@optimitech.com>
* Makefile.in (USE_TM_CLONE_REGISTRY): New.
(CRTSTUFF_CFLAGS): Use USE_TM_CLONE_REGISTRY.
* configure.ac: Add --disable-tm-clone-registry option.
* configure: Regenerate.
2019-06-27 Martin Liska <mliska@suse.cz>
* libgcov-driver-system.c (gcov_exit_open_gcda_file): Remove obviously

4
libgcc/Makefile.in
View File

@ -259,6 +259,8 @@ PICFLAG = @PICFLAG@
CET_FLAGS = @CET_FLAGS@
USE_TM_CLONE_REGISTRY = @use_tm_clone_registry@
# Defined in libgcc2.c, included only in the static library.
LIB2FUNCS_ST = _eprintf __gcc_bcmp
@ -299,7 +301,7 @@ CRTSTUFF_CFLAGS = -O2 $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -g0 \
$(NO_PIE_CFLAGS) -finhibit-size-directive -fno-inline -fno-exceptions \
-fno-zero-initialized-in-bss -fno-toplevel-reorder -fno-tree-vectorize \
-fbuilding-libgcc -fno-stack-protector $(FORCE_EXPLICIT_EH_REGISTRY) \
$(INHIBIT_LIBC_CFLAGS)
$(INHIBIT_LIBC_CFLAGS) $(USE_TM_CLONE_REGISTRY)
# Extra flags to use when compiling crt{begin,end}.o.
CRTSTUFF_T_CFLAGS =

15
libgcc/configure vendored
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@ -604,6 +604,7 @@ vis_hide
solaris_ld_v2_maps
real_host_noncanonical
accel_dir_suffix
use_tm_clone_registry
force_explicit_eh_registry
CET_FLAGS
fixed_point
@ -712,6 +713,7 @@ enable_decimal_float
with_system_libunwind
enable_cet
enable_explicit_exception_frame_registration
enable_tm_clone_registry
with_glibc_version
enable_tls
with_gcc_major_version_only
@ -1355,6 +1357,7 @@ Optional Features:
register exception tables explicitly at module
start, for use e.g. for compatibility with
installations without PT_GNU_EH_FRAME support
--disable-tm-clone-registry disable TM clone registry
--enable-tls Use thread-local storage [default=yes]
Optional Packages:
@ -4953,6 +4956,18 @@ fi
# Check whether --enable-tm-clone-registry was given.
if test "${enable_tm_clone_registry+set}" = set; then :
enableval=$enable_tm_clone_registry;
use_tm_clone_registry=
if test "$enable_tm_clone_registry" = no; then
use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
if ${acl_cv_prog_gnu_ld+:} false; then :

10
libgcc/configure.ac
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@ -261,6 +261,16 @@ fi
])
AC_SUBST([force_explicit_eh_registry])
AC_ARG_ENABLE([tm-clone-registry],
[ --disable-tm-clone-registry disable TM clone registry],
[
use_tm_clone_registry=
if test "$enable_tm_clone_registry" = no; then
use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0
fi
])
AC_SUBST([use_tm_clone_registry])
AC_LIB_PROG_LD_GNU
AC_MSG_CHECKING([for thread model used by GCC])