diff options
| author | Austin Foxley <austinf@cetoncorp.com> | 2009-11-22 12:17:38 -0800 |
|---|---|---|
| committer | Austin Foxley <austinf@cetoncorp.com> | 2009-11-22 12:17:38 -0800 |
| commit | 5c9ef58ec4bcb2def9e30f0b156f9cfcb1d0d163 (patch) | |
| tree | f8f889678b653d5275c285a037b9b43f27a91192 /libc/string/Makefile.in | |
| parent | f757db2d319ccc5f7034165046fb2bb58901afb1 (diff) | |
sh: Add new optimisation to the SH4 memcpy
This optimization is based on prefetching and 64bit data transfer via FPU
(only for the little endianess)
Tests shows that:
----------------------------------------
Memory bandwidth | Gain
| sh4-300 | sh4-200
----------------------------------------
512 bytes to 16KiB | ~20% | ~25%
from 32KiB to 16MiB | ~190% | ~5%
----------------------------------------
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
Diffstat (limited to 'libc/string/Makefile.in')
| -rw-r--r-- | libc/string/Makefile.in | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libc/string/Makefile.in b/libc/string/Makefile.in index 08a1856b7..67679ece7 100644 --- a/libc/string/Makefile.in +++ b/libc/string/Makefile.in @@ -18,7 +18,10 @@ STRING_SUBARCH_OUT := $(top_builddir)libc/string/$(TARGET_ARCH)/$(TARGET_SUBARCH STRING_SUBARCH_SSRC := $(wildcard $(STRING_SUBARCH_OUT)/*.S) STRING_SUBARCH_SOBJ := $(patsubst $(STRING_SUBARCH_DIR)/%.S,$(STRING_SUBARCH_OUT)/%.o,$(STRING_SUBARCH_SSRC)) -STRING_SUBARCH_OBJS := $(STRING_SUBARCH_SOBJ) +STRING_SUBARCH_CSRC := $(wildcard $(STRING_SUBARCH_OUT)/*.c) +STRING_SUBARCH_COBJ := $(patsubst $(STRING_SUBARCH_DIR)/%.c,$(STRING_SUBARCH_OUT)/%.o,$(STRING_SUBARCH_CSRC)) + +STRING_SUBARCH_OBJS := $(STRING_SUBARCH_SOBJ) $(STRING_SUBARCH_COBJ) endif # Collect the arch specific implementation (asm, c files) |