test/bench/shootout: more speedups Most significant in mandelbrot, from avoiding MOVSD between registers, but there are others.
test/bench/shootout: more speedups
Most significant in mandelbrot, from avoiding MOVSD between registers,
but there are others.

R=golang-dev, rsc
CC=golang-dev
http://codereview.appspot.com/6258063

tv42/old-go,dsriram/golang,pombredanne/go-deleteme,pombredanne/go-deleteme,apparentlymart/golang,gnanderson/go,tv42/old-go,tv42/old-go,dsriram/golang,tv42/old-go,apparentlymart/golang,gnanderson/go,dsriram/golang,tv42/old-go,apparentlymart/golang,pombredanne/go-deleteme,tv42/old-go,gnanderson/go,pombredanne/go-deleteme,gnanderson/go,dsriram/golang,apparentlymart/golang,dsriram/golang,pombredanne/go-deleteme,apparentlymart/golang,tv42/old-go,apparentlymart/golang,dsriram/golang,apparentlymart/golang,dsriram/golang,gnanderson/go,pombredanne/go-deleteme,gnanderson/go,gnanderson/go,pombredanne/go-deleteme