[turbofan] Introduce prediction for exception handlers.

[turbofan] Introduce prediction for exception handlers.

This introduces a conservative prediction for each exception handler
whether it will locally catch an exception or re-throw it to outside
the code bondaries. It will allow for a more intuitive prediction of
whether an exception is considered "caught" or "uncaught".

R=bmeurer@chromium.org,yangguo@chromium.org
BUG=chromium:492522
LOG=N

Committed: https://crrev.com/d8b94f34cc2a4c1604ce8192765738f5ea56462f
Cr-Commit-Position: refs/heads/master@{#28681}

[Michael Starzinger, 2015-05-28 11:20:33]

Note that tests and ports are still missing.
Benedikt: PTAL TurboFan internal parts.
Yang: PTAL interface and runtime parts.

[Yang, 2015-05-28 11:24:38]

On 2015/05/28 11:20:33, Michael Starzinger wrote:
> Note that tests and ports are still missing.
> Benedikt: PTAL TurboFan internal parts.
> Yang: PTAL interface and runtime parts.

non-TF part lgtm. I will add my debugger-related tests in a follow-up.

[Benedikt Meurer, 2015-05-28 11:28:18]

LGTM once nit is addressed.

https://codereview.chromium.org/1158563008/diff/1/src/compiler/common-operator.h
File src/compiler/common-operator.h (right):

https://codereview.chromium.org/1158563008/diff/1/src/compiler/common-operato...
src/compiler/common-operator.h:97: const Operator* IfException(bool
caught_locally = false);
Nit: Please don't use a bool here, but some enum.

[Michael Starzinger, 2015-05-28 12:33:44]

https://codereview.chromium.org/1158563008/diff/1/src/compiler/common-operator.h
File src/compiler/common-operator.h (right):

https://codereview.chromium.org/1158563008/diff/1/src/compiler/common-operato...
src/compiler/common-operator.h:97: const Operator* IfException(bool
caught_locally = false);
On 2015/05/28 11:28:18, Benedikt Meurer wrote:
> Nit: Please don't use a bool here, but some enum.

Done. Also removed the default argument as discussed offline.

[Michael Starzinger, 2015-05-28 13:20:50]

The CQ bit was checked by mstarzinger@chromium.org

[Michael Starzinger, 2015-05-28 13:20:51]

The patchset sent to the CQ was uploaded after l-g-t-m from
bmeurer@chromium.org, yangguo@chromium.org
Link to the patchset: https://codereview.chromium.org/1158563008/#ps20002
(title: "Architecture ports.")

[commit-bot: I haz the power, 2015-05-28 13:21:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1158563008/20002

[commit-bot: I haz the power, 2015-05-28 13:22:55]

Committed patchset #3 (id:20002)

[commit-bot: I haz the power, 2015-05-28 13:23:12]

Patchset 3 (id:??) landed as
https://crrev.com/d8b94f34cc2a4c1604ce8192765738f5ea56462f
Cr-Commit-Position: refs/heads/master@{#28681}