Added tracing information to the case when allocation folding cannot be performed.

Added tracing information to the case when allocation folding cannot be performed.

BUG=
R=mstarzinger@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=15686

[Michael Starzinger, 2013-07-16 08:44:35]

https://codereview.chromium.org/19290008/diff/1/src/hydrogen-instructions.cc
File src/hydrogen-instructions.cc (right):

https://codereview.chromium.org/19290008/diff/1/src/hydrogen-instructions.cc#...
src/hydrogen-instructions.cc:3185: return;
nit: This early return should fit into one line.

https://codereview.chromium.org/19290008/diff/1/src/hydrogen-instructions.cc#...
src/hydrogen-instructions.cc:3187: HAllocate* dominator_allocate_instr =
HAllocate::cast(dominator);
This cast will fail if "dominator" is not an HAllocate.

[Hannes Payer (out of office), 2013-07-16 08:51:52]

https://codereview.chromium.org/19290008/diff/1/src/hydrogen-instructions.cc
File src/hydrogen-instructions.cc (right):

https://codereview.chromium.org/19290008/diff/1/src/hydrogen-instructions.cc#...
src/hydrogen-instructions.cc:3185: return;
On 2013/07/16 08:44:36, Michael Starzinger wrote:
> nit: This early return should fit into one line.

Done.

https://codereview.chromium.org/19290008/diff/1/src/hydrogen-instructions.cc#...
src/hydrogen-instructions.cc:3187: HAllocate* dominator_allocate_instr =
HAllocate::cast(dominator);
On 2013/07/16 08:44:36, Michael Starzinger wrote:
> This cast will fail if "dominator" is not an HAllocate.

Yes, then I guess I have to duplicate the tracing output.

[Michael Starzinger, 2013-07-16 08:53:59]

LGTM.

[Hannes Payer (out of office), 2013-07-16 08:54:46]

Committed patchset #3 manually as r15686 (presubmit successful).