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4f445d2744
There was a bug in makeN that caused lots of unnecessary
allocations. Fixing this exposed a few bugs in other
functions which worked when makeN allocated a new slice, but
failed when it simply resized an existing slice. The result
is a pretty big performance improvement. When running
pidigits, here were the numbers I got on amd64:
Before this change:
pidigits 10000
gcc -O2 pidigits.c -lgmp 2.09u 0.02s 2.11r
gc pidigits 12.68u 0.04s 12.72r
gc_B pidigits 12.71u 0.03s 12.75r
After:
pidigits 10000
gcc -O2 pidigits.c -lgmp 2.09u 0.00s 2.10r
gc pidigits 6.82u 0.00s 6.85r
gc_B pidigits 6.55u 0.01s 6.59r
R=rsc, gri
CC=golang-dev
https://golang.org/cl/953042
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| libbio | ||
| libcgo | ||
| libmach | ||
| pkg | ||
| all-arm.bash | ||
| all-nacl.bash | ||
| all.bash | ||
| clean.bash | ||
| env.bash | ||
| Make.386 | ||
| Make.amd64 | ||
| Make.arm | ||
| make.bash | ||
| Make.cmd | ||
| Make.common | ||
| Make.conf | ||
| Make.pkg | ||
| quietgcc.bash | ||
| run.bash | ||
| sudo.bash | ||
| version.bash | ||