Revert of [machine-operator-reducer] fix float truncation

Revert of [machine-operator-reducer] fix float truncation (patchset #8 id:140001 of https://codereview.chromium.org/1433353006/ )

Reason for revert:
This is also unsound for the reasons outlined in
https://codereview.chromium.org/1473073004/
Will reland the mjsunit test separately and help Fedor to implement a solution based on simplified operators.

Original issue's description:
> [machine-operator-reducer] fix float truncation
>
> Don't replace `TruncateFloat64ToInt32(RoundInt64ToFloat64(value))` with
> `value`. Generally, `value` may have a range bigger than the one that
> could fit into Int32. Replace it with `TruncateInt64ToInt32(value)`
> instead, and only if the `value` fits into Float64 without precision
> loss.
>
> Add missing mjsunit test for 52bit multiplication/division optimization
> that has landed in refs/heads/master@{#31899}.
>
> BUG=
> R=titzer@google.com
>
> Committed: https://crrev.com/64efa2a904773816968992628f0bf0f1b7ae82be
> Cr-Commit-Position: refs/heads/master@{#32227}

TBR=titzer@chromium.org,fedor@indutny.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/dc554059927c68e852e75d818be34ee14067494f
Cr-Commit-Position: refs/heads/master@{#32312}

[Benedikt Meurer, 2015-11-26 06:11:38]

Created Revert of [machine-operator-reducer] fix float truncation

[commit-bot: I haz the power, 2015-11-26 06:11:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1468313009/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1468313009/1

[commit-bot: I haz the power, 2015-11-26 06:11:55]

Description was changed from

==========
Revert of [machine-operator-reducer] fix float truncation (patchset #8 id:140001
of https://codereview.chromium.org/1433353006/ )

Reason for revert:
This is also unsound for the reasons outlined in
https://codereview.chromium.org/1473073004/
Will reland the mjsunit test separately and help Fedor to implement a solution
based on simplified operators.

Original issue's description:
> [machine-operator-reducer] fix float truncation
> 
> Don't replace `TruncateFloat64ToInt32(RoundInt64ToFloat64(value))` with
> `value`. Generally, `value` may have a range bigger than the one that
> could fit into Int32. Replace it with `TruncateInt64ToInt32(value)`
> instead, and only if the `value` fits into Float64 without precision
> loss.
> 
> Add missing mjsunit test for 52bit multiplication/division optimization
> that has landed in refs/heads/master@{#31899}.
> 
> BUG=
> R=titzer@google.com
> 
> Committed: https://crrev.com/64efa2a904773816968992628f0bf0f1b7ae82be
> Cr-Commit-Position: refs/heads/master@{#32227}

TBR=titzer@chromium.org,fedor@indutny.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

to

==========
Revert of [machine-operator-reducer] fix float truncation (patchset #8 id:140001
of https://codereview.chromium.org/1433353006/ )

Reason for revert:
This is also unsound for the reasons outlined in
https://codereview.chromium.org/1473073004/
Will reland the mjsunit test separately and help Fedor to implement a solution
based on simplified operators.

Original issue's description:
> [machine-operator-reducer] fix float truncation
> 
> Don't replace `TruncateFloat64ToInt32(RoundInt64ToFloat64(value))` with
> `value`. Generally, `value` may have a range bigger than the one that
> could fit into Int32. Replace it with `TruncateInt64ToInt32(value)`
> instead, and only if the `value` fits into Float64 without precision
> loss.
> 
> Add missing mjsunit test for 52bit multiplication/division optimization
> that has landed in refs/heads/master@{#31899}.
> 
> BUG=
> R=titzer@google.com
> 
> Committed: https://crrev.com/64efa2a904773816968992628f0bf0f1b7ae82be
> Cr-Commit-Position: refs/heads/master@{#32227}

TBR=titzer@chromium.org,fedor@indutny.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

[commit-bot: I haz the power, 2015-11-26 06:11:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-26 06:12:32]

Description was changed from

==========
Revert of [machine-operator-reducer] fix float truncation (patchset #8 id:140001
of https://codereview.chromium.org/1433353006/ )

Reason for revert:
This is also unsound for the reasons outlined in
https://codereview.chromium.org/1473073004/
Will reland the mjsunit test separately and help Fedor to implement a solution
based on simplified operators.

Original issue's description:
> [machine-operator-reducer] fix float truncation
> 
> Don't replace `TruncateFloat64ToInt32(RoundInt64ToFloat64(value))` with
> `value`. Generally, `value` may have a range bigger than the one that
> could fit into Int32. Replace it with `TruncateInt64ToInt32(value)`
> instead, and only if the `value` fits into Float64 without precision
> loss.
> 
> Add missing mjsunit test for 52bit multiplication/division optimization
> that has landed in refs/heads/master@{#31899}.
> 
> BUG=
> R=titzer@google.com
> 
> Committed: https://crrev.com/64efa2a904773816968992628f0bf0f1b7ae82be
> Cr-Commit-Position: refs/heads/master@{#32227}

TBR=titzer@chromium.org,fedor@indutny.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
==========

to

==========
Revert of [machine-operator-reducer] fix float truncation (patchset #8 id:140001
of https://codereview.chromium.org/1433353006/ )

Reason for revert:
This is also unsound for the reasons outlined in
https://codereview.chromium.org/1473073004/
Will reland the mjsunit test separately and help Fedor to implement a solution
based on simplified operators.

Original issue's description:
> [machine-operator-reducer] fix float truncation
>
> Don't replace `TruncateFloat64ToInt32(RoundInt64ToFloat64(value))` with
> `value`. Generally, `value` may have a range bigger than the one that
> could fit into Int32. Replace it with `TruncateInt64ToInt32(value)`
> instead, and only if the `value` fits into Float64 without precision
> loss.
>
> Add missing mjsunit test for 52bit multiplication/division optimization
> that has landed in refs/heads/master@{#31899}.
>
> BUG=
> R=titzer@google.com
>
> Committed: https://crrev.com/64efa2a904773816968992628f0bf0f1b7ae82be
> Cr-Commit-Position: refs/heads/master@{#32227}

TBR=titzer@chromium.org,fedor@indutny.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/dc554059927c68e852e75d818be34ee14067494f
Cr-Commit-Position: refs/heads/master@{#32312}
==========

[commit-bot: I haz the power, 2015-11-26 06:12:33]

Patchset 1 (id:??) landed as
https://crrev.com/dc554059927c68e852e75d818be34ee14067494f
Cr-Commit-Position: refs/heads/master@{#32312}