From fac4790491f69b29755d92db2cad508849573ff7 Mon Sep 17 00:00:00 2001 From: Alexey Brodkin Date: Thu, 25 Jan 2018 00:25:12 +0300 Subject: [PATCH] arc: Eliminate unused code and data with GCC's garbage collector Finally GCC's garbage collector works on ARC so let's use it. That's what I may see for HSDK: Before: text data bss dec hex filename 290153 10068 222616 522837 7fa55 u-boot After: text data bss dec hex filename 261999 9460 222360 493819 788fb u-boot Overall ~5% of memory footprint saved. Signed-off-by: Alexey Brodkin --- arch/arc/config.mk | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arc/config.mk b/arch/arc/config.mk index 3ed0c28..d040454 100644 --- a/arch/arc/config.mk +++ b/arch/arc/config.mk @@ -51,9 +51,10 @@ PLATFORM_CPPFLAGS += -mcpu=archs endif PLATFORM_CPPFLAGS += -ffixed-r25 -D__ARC__ -gdwarf-2 -mno-sdata +PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections # Needed for relocation -LDFLAGS_FINAL += -pie +LDFLAGS_FINAL += -pie --gc-sections # Load address for standalone apps CONFIG_STANDALONE_LOAD_ADDR ?= 0x82000000 -- 2.7.4