code review 5259041: runtime: faster strings

runtime: faster strings
Use FlagNoPointers and do not zeroize memory when allocate strings.
test/garbage/parser.out        old         new
run #1                     32.923s     32.065s
run #2                     33.047s     31.931s
run #3                     32.702s     31.841s
run #4                     32.718s     31.838s
run #5                     32.702s     31.868s

[dvyukov, 2011-10-12 14:12:39]

Hello golang-dev@googlegroups.com (cc: golang-dev@googlegroups.com),

I'd like you to review this change to
https://go.googlecode.com/hg/

[rsc, 2011-10-12 14:15:42]

LGTM

[dvyukov, 2011-10-12 14:40:29]

*** Submitted as http://code.google.com/p/go/source/detail?r=92b8c1bf3e95 ***

runtime: faster strings
Use FlagNoPointers and do not zeroize memory when allocate strings.
test/garbage/parser.out        old         new
run #1                     32.923s     32.065s
run #2                     33.047s     31.931s
run #3                     32.702s     31.841s
run #4                     32.718s     31.838s
run #5                     32.702s     31.868s

R=golang-dev, rsc
CC=golang-dev
http://codereview.appspot.com/5259041