MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and Float64SubPreserveNan'.

MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and Float64SubPreserveNan'.

Port 481502dad9b45a38c86387d50cebe52f00b072ad

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does not preserve NaN payload according to Wasm spec. Implemented macro-assembler methods that check for NaN operands, and return the qNaN value with preserved payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=

[Marija Antic, 2016-05-27 12:54:53]

Description was changed from

==========
MIPS: Fix Float32SubMinusZero and Float64SubMinusZero tests.

BUG=
==========

to

==========
MIPS: Fix Float32SubMinusZero and Float64SubMinusZero tests.

Tests are failing because MIPS does not preserve NaN payload according to Wasm
spec. Implemented macro-assembler methods that check for NaN operands, and
return the qNaN value with preserved payload and sign bits.

BUG=
==========

[Marija Antic, 2016-05-27 13:13:54]

marija.antic@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, balazs.kilvady@imgtec.com, ilija.pavlovic@imgtec.com,
ivica.bogosavljevic@imgtec.com, miran.karic@imgtec.com

[Marija Antic, 2016-05-27 13:13:54]

PTAL.

[Marija Antic, 2016-06-06 11:36:00]

Description was changed from

==========
MIPS: Fix Float32SubMinusZero and Float64SubMinusZero tests.

Tests are failing because MIPS does not preserve NaN payload according to Wasm
spec. Implemented macro-assembler methods that check for NaN operands, and
return the qNaN value with preserved payload and sign bits.

BUG=
==========

to

==========
MIPS: Fix port of 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

BUG=
==========

[Marija Antic, 2016-06-06 11:37:55]

Description was changed from

==========
MIPS: Fix port of 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

BUG=
==========

to

==========
MIPS: Fix port of 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=

BUG=
==========

[Marija Antic, 2016-06-08 11:25:07]

Description was changed from

==========
MIPS: Fix port of 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=

BUG=
==========

to

==========
MIPS: [turbofan] Fix 'Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=

BUG=
==========

[Marija Antic, 2016-06-08 11:30:40]

Description was changed from

==========
MIPS: [turbofan] Fix 'Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=

BUG=
==========

to

==========
[turbofan] MIPS: Fix 'Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=

BUG=
==========

[Marija Antic, 2016-06-08 11:46:13]

Description was changed from

==========
[turbofan] MIPS: Fix 'Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=

BUG=
==========

to

==========
[turbofan] MIPS: Fix 'Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

[balazs.kilvady, 2016-06-09 09:57:10]

lgtm, The message should be:
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan for wasm.'

Port 481502dad9b45a38c86387d50cebe52f00b072ad

other text....

[Marija Antic, 2016-06-09 09:58:28]

Description was changed from

==========
[turbofan] MIPS: Fix 'Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

to

==========
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

[Marija Antic, 2016-06-09 09:58:45]

The CQ bit was checked by marija.antic@imgtec.com to run a CQ dry run

[commit-bot: I haz the power, 2016-06-09 09:58:48]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2019693002/60001

[commit-bot: I haz the power, 2016-06-09 10:23:10]

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

[commit-bot: I haz the power, 2016-06-09 10:23:11]

Dry run: This issue passed the CQ dry run.

[Marija Antic, 2016-06-09 10:37:21]

The CQ bit was checked by marija.antic@imgtec.com

[commit-bot: I haz the power, 2016-06-09 10:37:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2019693002/60001

[commit-bot: I haz the power, 2016-06-09 10:41:54]

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

[commit-bot: I haz the power, 2016-06-09 10:41:55]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/16837)

[balazs.kilvady, 2016-06-09 12:26:46]

balazs.kilvady@imgtec.com changed reviewers:
+ titzer@chromium.org

[balazs.kilvady, 2016-06-09 12:26:47]

We need an lgtm from a v8-team member for changes in wasm interpreter, PTAL.

[Marija Antic, 2016-06-10 11:16:23]

Description was changed from

==========
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.
Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

to

==========
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

[Marija Antic, 2016-06-10 11:16:44]

Description was changed from

==========
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port of 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

to

==========
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

[Marija Antic, 2016-06-10 11:20:21]

Description was changed from

==========
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port 481502dad9b45a38c86387d50cebe52f00b072ad.

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

to

==========
MIPS: Fix '[turbofan] Introduce new operators Float32SubPreserveNan and
Float64SubPreserveNan'.

Port 481502dad9b45a38c86387d50cebe52f00b072ad

Float32SubMinusZero and Float64SubMinusZero tests are failing because MIPS does
not preserve NaN payload according to Wasm spec. Implemented macro-assembler
methods that check for NaN operands, and return the qNaN value with preserved
payload and sign bits.

TEST=Run_WasmFloat32SubMinusZero, Run_WasmFloat64SubMinusZero

BUG=
==========

[Marija Antic, 2016-06-10 12:38:07]

Check for NaN operand is performed only if the result of subtraction is a NaN or
infinity.

[balazs.kilvady, 2016-06-15 08:42:40]

NOT LGTM