On Jul 24, 2013, at 1:36 AM, William Harrington wrote:
Graphite is a great option for GCC to reduce code size, and ISL and
CLooG are required for this, but ISL and CLooG can use openscop and
piplib, as well, to enhance graphite.
So here are some results of tools:
I was building from x86_64 host to an x86 pentium3 target:
with default opts unstripped tools: 453M stripped tools: 217M
graphite opts and -O3 and -march=pentium3 for target: unstripped
tools 170M stripped tools: 155M
Specifically graphite opts used were: -floop-block -floop-interchange -
floop-strip-mine -fgraphite-identity -floop-parallelize-all -ftree-
loop-linear
The large size from default opts before stripping is the debugging
symbols include din the default opts of eglibc and possibly gcc/
binutils.
After stripping it was 60M less. There will be even more saved when
doing a final system build and going beyond.
Be careful with -floop-nest-optimize it has some problems.
Sincerely,
William Harrington
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