Hello , The per-function section linking has been enabled under this patch. I am adding Chris , to discuss about the differ in my bss and dec drops and that of Dr.Joel's My size drop change can be seen here ------------------------------------------------------------------------------ The size of the sample executables without this option were:
text data bss dec hex filename 257876 3416 148812 410104 641f8 ./capture.exe 126956 2428 145836 275220 43314 ./base_sp.exe 330400 4600 146916 481916 75a7c ./cdtest.exe 1092476 23588 153684 1269748 135ff4 ./cxx_iostream.exe 654892 6056 158868 819816 c8268 ./fileio.exe 159260 2812 145956 308028 4b33c ./hello.exe 339392 7344 152824 499560 79f68 ./loopback.exe 106388 2276 142644 251308 3d5ac ./minimum.exe 156348 2960 145980 305288 4a888 ./nsecs.exe 201020 3204 146592 350816 55a60 ./paranoia.exe 547684 13548 175556 736788 b3e14 ./pppd.exe 130108 2468 145872 278448 43fb0 ./ticker.exe 129740 2436 149696 281872 44d10 ./unlimited.exe The size of the sample executables with this option were: text data bss dec hex filename 246508 2856 147036 396400 60c70 ./cxx_iostream.exe 641752 6016 158548 806316 c4dac ./fileio.exe 148264 2800 145916 296980 48814 ./hello.exe 319252 7340 152756 479348 75074 ./loopback.exe 100396 2288 142556 245240 3bdf8 ./minimum.exe 148200 2932 145892 297024 48840 ./nsecs.exe 190520 3192 146552 340264 53128 ./paranoia.exe 531300 13544 175480 720324 afdc4 ./pppd.exe 124008 2472 145788 272268 4278c ./ticker.exe 127848 2432 149660 279940 44584 ./unlimited.exe 121272 2432 145752 269456 41c90 ./base_sp.exe 241104 3412 148768 393284 60044 ./capture.exe 245424 2936 146876 395236 607e4 ./cdtest.exe ---------------------------------------------------------------------------------------------- Thank you Regards --Shashvat
From 31db29936a23b68469f6666dc52fb384d1235442 Mon Sep 17 00:00:00 2001 From: Shashvat Jain <shashvatjain2...@gmail.com> Date: Fri, 30 Nov 2018 13:07:17 -0500 Subject: [PATCH] powerpc/mpc8260ads:Add per-section compilation and linking support(GCI 2018) The size of the sample executables without this option were: text data bss dec hex filename 257876 3416 148812 410104 641f8 ./capture.exe 126956 2428 145836 275220 43314 ./base_sp.exe 330400 4600 146916 481916 75a7c ./cdtest.exe 1092476 23588 153684 1269748 135ff4 ./cxx_iostream.exe 654892 6056 158868 819816 c8268 ./fileio.exe 159260 2812 145956 308028 4b33c ./hello.exe 339392 7344 152824 499560 79f68 ./loopback.exe 106388 2276 142644 251308 3d5ac ./minimum.exe 156348 2960 145980 305288 4a888 ./nsecs.exe 201020 3204 146592 350816 55a60 ./paranoia.exe 547684 13548 175556 736788 b3e14 ./pppd.exe 130108 2468 145872 278448 43fb0 ./ticker.exe 129740 2436 149696 281872 44d10 ./unlimited.exe The size of the sample executables with this option were: text data bss dec hex filename 246508 2856 147036 396400 60c70 ./cxx_iostream.exe 641752 6016 158548 806316 c4dac ./fileio.exe 148264 2800 145916 296980 48814 ./hello.exe 319252 7340 152756 479348 75074 ./loopback.exe 100396 2288 142556 245240 3bdf8 ./minimum.exe 148200 2932 145892 297024 48840 ./nsecs.exe 190520 3192 146552 340264 53128 ./paranoia.exe 531300 13544 175480 720324 afdc4 ./pppd.exe 124008 2472 145788 272268 4278c ./ticker.exe 127848 2432 149660 279940 44584 ./unlimited.exe 121272 2432 145752 269456 41c90 ./base_sp.exe 241104 3412 148768 393284 60044 ./capture.exe 245424 2936 146876 395236 607e4 ./cdtest.exe Closes #2565 --- bsps/powerpc/mpc8260ads/config/mpc8260ads.cfg | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/bsps/powerpc/mpc8260ads/config/mpc8260ads.cfg b/bsps/powerpc/mpc8260ads/config/mpc8260ads.cfg index d335e92..7b5a9dc 100644 --- a/bsps/powerpc/mpc8260ads/config/mpc8260ads.cfg +++ b/bsps/powerpc/mpc8260ads/config/mpc8260ads.cfg @@ -16,7 +16,6 @@ CPU_CFLAGS = -mcpu=603e -mstrict-align -meabi -msdata=sysv -fno-common # optimize flag: typically -O2 CFLAGS_OPTIMIZE_V = -O2 -g -fno-keep-inline-functions -# FIXME: Disabled because linkcmds lacks proper KEEP() directives. See #2565. # The following two lines enable compiling and linking on per element. -# CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections -# LDFLAGS = -Wl,--gc-sections +CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections +LDFLAGS = -Wl,--gc-sections -- 1.8.3.1
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