Re-use phi reachability information to avoid a fixed-point computation.

Re-use phi reachability information to avoid a fixed-point computation.

When we propagate the information that a value is not convertible to integer,
there is no need for a separate fixed-point computation, we can do things the
"Millikin way" (tm), folding as much computation as possible into a single pass:
;-) We already have the phi node reachability information, so we can easily
propagate this while doing the representation histogram computation.
Committed: http://code.google.com/p/v8/source/detail?r=9212

[danno, 2011-09-09 08:40:01]

LGTM

[fschneider, 2011-09-09 13:02:07]

LGTM as well.

http://codereview.chromium.org/7754010/diff/1/src/hydrogen.cc
File src/hydrogen.cc (right):

http://codereview.chromium.org/7754010/diff/1/src/hydrogen.cc#newcode1712
src/hydrogen.cc:1712: 
Remove extra newlines.