Temporarily patch HCompareIDAndBranch to accept Smi.

Temporarily patch HCompareIDAndBranch to accept Smi.

R=jkummerow@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=15122

[Toon Verwaest, 2013-06-13 12:02:36]

PTAL

[Jakob Kummerow, 2013-06-13 13:34:41]

LGTM with a comment.

https://chromiumcodereview.appspot.com/16957005/diff/1/src/hydrogen.cc
File src/hydrogen.cc (right):

https://chromiumcodereview.appspot.com/16957005/diff/1/src/hydrogen.cc#newcod...
src/hydrogen.cc:9924: if (left_rep.IsInteger32()) left_rep =
Representation::Smi();
I think it would be a bit cleaner to formulate the condition in terms of the
Type info that was originally translated into left_rep. After rebasing to
bleeding_edge, that will look like:

if (left_type->Is(Type::Integer31())) left_rep = Representation::Smi();

[Toon Verwaest, 2013-06-13 14:20:52]

Addressed comments.

[Toon Verwaest, 2013-06-13 14:58:47]

Committed patchset #2 manually as r15122 (presubmit successful).