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

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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index eab9ab9a8591eb0720acb392f4d5a1699f6d26e7..f8bd2b21636e5670294a4a2820605ee10a5c8130 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -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

diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 29d047004fd6206d56bd683bb57a5901ebbd170d..1a0e8c7d3f8bfe224c6826342fcb61d4e1127b27 100644 (file)
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -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}

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 5b560e803b1fb5b205a0695508a5543c78365788..d69e55efdd0708abde219395cc46ff41abc0f658 100644 (file)
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -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

diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
index 33b83809cfc001440a8867a90da48f37b453d08c..e10a197a4efd2d8957b517ec0b91de3070d90452 100644 (file)
--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
@@ -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 =

diff --git a/libgcc/configure b/libgcc/configure
index af910b62931c85c5018ce24100822bee3b0c3952..29f647319b463908f2273dba02bf985ce631cb9b 100644 (file)
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -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 :

diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index 5f11455dba5f2a5879bbb3554ccae4326b92608b..b1b90d294ff43f735e5b2f62f34bfa8840888c6f 100644 (file)
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -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])