On 04/23/2018 07:59 AM, Alexander Graf wrote:
The linker can remove sections that are never addressed, so it makes a lot
of sense to declare every function as an individual section.
This reduces the output U-Boot code size by ~30kb for me.
Signed-off-by: Alexander Graf <ag...@suse.de>
---
arch/riscv/config.mk | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/config.mk b/arch/riscv/config.mk
index 6b681c4286..69f4cf6ce8 100644
--- a/arch/riscv/config.mk
+++ b/arch/riscv/config.mk
@@ -29,5 +29,5 @@ CONFIG_STANDALONE_LOAD_ADDR = 0x00000000 \
-T $(srctree)/examples/standalone/riscv.lds
PLATFORM_CPPFLAGS += -ffixed-gp -fpic
-PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -gdwarf-2
+PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -gdwarf-2
-ffunction-sections
Other architectures also use -fdata-sections.
Why wouldn't we set it for RISC-V?
Cf.
https://gcc.gnu.org/onlinedocs/gcc-7.3.0/gcc/Optimize-Options.html#index-fdata-sections
Regards
Heinrich
LDFLAGS_u-boot += --gc-sections -static -pie
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