Allow intish and floatish to be coerced by heap assignment.

Allow intish and floatish to be coerced by heap assignment.

When assigning to an integer view of the heap an intish
value does not need to be collapsed with |0.
Similarly a floatish value does not need to be collapsed with
fround when assigned to a float view of the heap.
i32[0] = i32_1 + i32_2;  // ok
f32[0] = f32_1 + f32_2;  // ok

However, floatish values cannot be safely assigned to double
arrays.
f64[0] = f32_1 + f32_2;  // not ok

BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=mjsunit/asm-wasm,test-asm-validator
R=aseemgarg@chromium.org,titzer@chromium.org
LOG=N

Committed: https://crrev.com/7e805faa30ca258cc62fca07f3e1f73026eb0401
Cr-Commit-Position: refs/heads/master@{#34206}

[aseemgarg, 2016-02-22 21:54:53]

lgtm

[bradn, 2016-02-22 21:57:56]

The CQ bit was checked by bradnelson@google.com

[commit-bot: I haz the power, 2016-02-22 21:58:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1722473002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1722473002/1

[commit-bot: I haz the power, 2016-02-22 21:59:58]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-02-22 21:59:59]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/11336)

[bradn, 2016-02-23 05:43:21]

The CQ bit was checked by bradnelson@google.com

[bradn, 2016-02-23 05:43:22]

The patchset sent to the CQ was uploaded after l-g-t-m from
aseemgarg@chromium.org
Link to the patchset: https://codereview.chromium.org/1722473002/#ps20001
(title: "merge")

[commit-bot: I haz the power, 2016-02-23 05:43:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1722473002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1722473002/20001

[commit-bot: I haz the power, 2016-02-23 06:18:44]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-02-23 06:18:59]

Description was changed from

==========
Allow intish and floatish to be coerced by heap assignment.

When assigning to an integer view of the heap an intish
value does not need to be collapsed with |0.
Similarly a floatish value does not need to be collapsed with
fround when assigned to a float view of the heap.
i32[0] = i32_1 + i32_2;  // ok
f32[0] = f32_1 + f32_2;  // ok

However, floatish values cannot be safely assigned to double
arrays.
f64[0] = f32_1 + f32_2;  // not ok

BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=mjsunit/asm-wasm,test-asm-validator
R=aseemgarg@chromium.org,titzer@chromium.org
LOG=N
==========

to

==========
Allow intish and floatish to be coerced by heap assignment.

When assigning to an integer view of the heap an intish
value does not need to be collapsed with |0.
Similarly a floatish value does not need to be collapsed with
fround when assigned to a float view of the heap.
i32[0] = i32_1 + i32_2;  // ok
f32[0] = f32_1 + f32_2;  // ok

However, floatish values cannot be safely assigned to double
arrays.
f64[0] = f32_1 + f32_2;  // not ok

BUG= https://code.google.com/p/v8/issues/detail?id=4203
TEST=mjsunit/asm-wasm,test-asm-validator
R=aseemgarg@chromium.org,titzer@chromium.org
LOG=N

Committed: https://crrev.com/7e805faa30ca258cc62fca07f3e1f73026eb0401
Cr-Commit-Position: refs/heads/master@{#34206}
==========

[commit-bot: I haz the power, 2016-02-23 06:19:00]

Patchset 2 (id:??) landed as
https://crrev.com/7e805faa30ca258cc62fca07f3e1f73026eb0401
Cr-Commit-Position: refs/heads/master@{#34206}