MIPS: Fix 'MIPS: Followup [turbofan] Introduce new operators Float32SubPreserveNan and Float64SubPr…

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

Port eff959bb5593668a82dfb5c04c464ddcb8a3315c

Original commit message:
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=cctest/test-run-wasm/Run_WasmFloat32SubMinusZero, cctest/test-run-wasm/Run_WasmFloat64SubMinusZero
BUG=

Committed: https://crrev.com/8c4e388e50fb6eb318cffa0d607917fa5034ac2c
Cr-Commit-Position: refs/heads/master@{#37151}

[balazs.kilvady, 2016-06-21 13:15:39]

balazs.kilvady@imgtec.com changed reviewers:
+ ahaas@chromium.org, akos.palfi@imgtec.com, ivica.bogosavljevic@imgtec.com,
marija.antic@imgtec.com, titzer@chromium.org

[akos.palfi.imgtec, 2016-06-21 16:37:51]

Lgtm

[balazs.kilvady, 2016-06-21 16:39:37]

The CQ bit was checked by balazs.kilvady@imgtec.com

[commit-bot: I haz the power, 2016-06-21 16:39:43]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2081993002/1

[commit-bot: I haz the power, 2016-06-21 17:04:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-21 17:05:02]

Description was changed from

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

Port eff959bb5593668a82dfb5c04c464ddcb8a3315c

Original commit message:
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=cctest/test-run-wasm/Run_WasmFloat32SubMinusZero,
cctest/test-run-wasm/Run_WasmFloat64SubMinusZero
BUG=
==========

to

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

Port eff959bb5593668a82dfb5c04c464ddcb8a3315c

Original commit message:
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=cctest/test-run-wasm/Run_WasmFloat32SubMinusZero,
cctest/test-run-wasm/Run_WasmFloat64SubMinusZero
BUG=

Committed: https://crrev.com/8c4e388e50fb6eb318cffa0d607917fa5034ac2c
Cr-Commit-Position: refs/heads/master@{#37151}
==========

[commit-bot: I haz the power, 2016-06-21 17:05:03]

Patchset 1 (id:??) landed as
https://crrev.com/8c4e388e50fb6eb318cffa0d607917fa5034ac2c
Cr-Commit-Position: refs/heads/master@{#37151}