On Mon, Mar 14, 2011 at 12:28 PM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Thu, Jan 27, 2011 at 2:40 AM, Richard Guenther > <richard.guent...@gmail.com> wrote: >> On Thu, Jan 27, 2011 at 12:12 AM, H.J. Lu <hongjiu...@intel.com> wrote: >>> On Tue, Dec 14, 2010 at 05:20:48PM -0800, H.J. Lu wrote: >>>> This patch uses .init_array/.fini_array sections instead of >>>> .ctors/.dtors sections if mixing .init_array/.fini_array and >>>> .ctors/.dtors sections with init_priority works. >>>> >>>> It removes .ctors/.ctors sections from executables and DSOes, which will >>>> remove one function call at startup time from each executable and DSO. >>>> It should reduce image size and improve system startup time. >>>> >>>> If a platform with a working .init_array/.fini_array support needs a >>>> different .init_array/.fini_array implementation, it can set >>>> use_initfini_array to no. >>>> >>>> Since .init_array/.fini_array is a target feature. --enable-initfini-array >>>> is default to no unless the native run-time test is passed. >>>> >>>> To pass the native run-time test, a linker with SORT_BY_INIT_PRIORITY >>>> support is required. The binutils patch is available at >>>> >>>> http://sourceware.org/ml/binutils/2010-12/msg00466.html >>> >>> Linker patch has been checked in. >>> >>>> >>>> This patch passed 32bit/64bit regression test on Linux/x86-64. Any >>>> comments? >>>> >>> >>> This updated patch fixes build on Linux/ia64 and should work on others. >>> Any comments? >> >> Yes. This is stage1 material. >> > > Here is the updated patch. OK for trunk? > > Thanks. > > > -- > H.J. > ---- > 2011-03-14 H.J. Lu <hongjiu...@intel.com> > > PR target/46770 > * acinclude.m4 (gcc_AC_INITFINI_ARRAY): Removed. > > * config.gcc (use_initfini_array): New variable. > Use initfini-array.o if supported. > > * crtstuff.c: Don't generate .ctors nor .dtors sections if > NO_CTORS_DTORS_SECTIONS is defined. > > * configure.ac: Remove gcc_AC_INITFINI_ARRAY. Add > --enable-initfini-array and check if .init_array can be used with > .ctors. > > * configure: Regenerated. > > * config/initfini-array.c: New. > * config/initfini-array.h: Likewise. > * config/t-initfini-array: Likewise. > > * config/arm/arm.c (arm_asm_init_sections): Call > elf_initfini_array_init_sections if NO_CTORS_DTORS_SECTIONS > is defined. > * config/avr/avr.c (avr_asm_init_sections): Likewise. > * config/ia64/ia64.c (ia64_asm_init_sections): Likewise. > * config/mep/mep.c (mep_asm_init_sections): Likewise. > * config/microblaze/microblaze.c (microblaze_elf_asm_init_sections): > Likewise. > * config/rs6000/rs6000.c (rs6000_elf_asm_init_sections): Likewise. > * config/stormy16/stormy16.c (xstormy16_asm_init_sections): > Likewise. > * config/v850/v850.c (v850_asm_init_sections): Likewise. >
PING: http://gcc.gnu.org/ml/gcc-patches/2011-03/msg00760.html -- H.J.
