[wasm] Change the return type of traps for tests, and added ftoi64 instructions.

[wasm] Change the return type of traps for tests, and added ftoi64 instructions.

Before this change traps always returned a 32 bit word in tests. With this
change traps return either a 32 bit word or a64 bit word, depending on the size
of the actual return value of the test.

Additionally this CL implements the wasm instructions I64SCONVERTF32,
I64UCONVERTF32, I64SCONVERTF64, and I64UCONVERTF64.

R=titzer@chromium.org

Committed: https://crrev.com/d83057b4ce27e9852cdca8a90d5bab9dcb4b6489
Cr-Commit-Position: refs/heads/master@{#32800}

[titzer, 2015-12-11 13:49:26]

lgtm other than one comment

https://codereview.chromium.org/1519013003/diff/1/src/compiler/wasm-compiler.cc
File src/compiler/wasm-compiler.cc (right):

https://codereview.chromium.org/1519013003/diff/1/src/compiler/wasm-compiler....
src/compiler/wasm-compiler.cc:231: ret_dead =
graph()->NewNode(jsgraph()->common()->Return(),
You can just make the return value node in these cases, the rest is the same.

[ahaas, 2015-12-11 14:28:08]

On 2015/12/11 at 13:49:26, titzer wrote:
> lgtm other than one comment
> 
>
https://codereview.chromium.org/1519013003/diff/1/src/compiler/wasm-compiler.cc
> File src/compiler/wasm-compiler.cc (right):
> 
>
https://codereview.chromium.org/1519013003/diff/1/src/compiler/wasm-compiler....
> src/compiler/wasm-compiler.cc:231: ret_dead =
graph()->NewNode(jsgraph()->common()->Return(),
> You can just make the return value node in these cases, the rest is the same.

Done.

[ahaas, 2015-12-11 14:28:26]

The CQ bit was checked by ahaas@chromium.org

[ahaas, 2015-12-11 14:28:26]

The patchset sent to the CQ was uploaded after l-g-t-m from titzer@chromium.org
Link to the patchset: https://codereview.chromium.org/1519013003/#ps20001
(title: "Fixed nits.")

[commit-bot: I haz the power, 2015-12-11 14:28:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1519013003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1519013003/20001

[commit-bot: I haz the power, 2015-12-11 14:54:15]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-12-11 14:54:28]

Description was changed from

==========
[wasm] Change the return type of traps for tests, and added ftoi64 instructions.

Before this change traps always returned a 32 bit word in tests. With this
change traps return either a 32 bit word or a64 bit word, depending on the size
of the actual return value of the test.

Additionally this CL implements the wasm instructions I64SCONVERTF32,
I64UCONVERTF32, I64SCONVERTF64, and I64UCONVERTF64.

R=titzer@chromium.org
==========

to

==========
[wasm] Change the return type of traps for tests, and added ftoi64 instructions.

Before this change traps always returned a 32 bit word in tests. With this
change traps return either a 32 bit word or a64 bit word, depending on the size
of the actual return value of the test.

Additionally this CL implements the wasm instructions I64SCONVERTF32,
I64UCONVERTF32, I64SCONVERTF64, and I64UCONVERTF64.

R=titzer@chromium.org

Committed: https://crrev.com/d83057b4ce27e9852cdca8a90d5bab9dcb4b6489
Cr-Commit-Position: refs/heads/master@{#32800}
==========

[commit-bot: I haz the power, 2015-12-11 14:54:28]

Patchset 2 (id:??) landed as
https://crrev.com/d83057b4ce27e9852cdca8a90d5bab9dcb4b6489
Cr-Commit-Position: refs/heads/master@{#32800}