X87: [wasm] Change the test case for Run_WasmCall_Float32Sub

X87: [wasm] Change the test case for Run_WasmCall_Float32Sub

  The reason is same as the CL #31808 (issue 1430943002, X87: Change the test case for X87 float operations), please refer: https://codereview.chromium.org/1430943002/

  Here is the key comments from CL #31808
  Some new test cases use CheckFloatEq(...) and CheckDoubleEq(...) function for result check. When GCC compiling the CheckFloatEq() and CheckDoubleEq() function, those inlined functions has different behavior comparing with GCC ia32 build and x87 build.
  The major difference is sse float register still has single precision rounding semantic. While X87 register has no such rounding precsion semantic when directly use register value.
  The V8 turbofan JITTed has exactly same result in both X87 and IA32 port.

  So we add the following sentence to do type case to keep the same precision for Run_WasmCall_Float32Sub.
  Such as: volatile float expect = *i +/- *j; // *i +/- *j, etc.

BUG=

Committed: https://crrev.com/48bc94253fa4e8aaa69a1c11f195b729ff427729
Cr-Commit-Position: refs/heads/master@{#33143}

[zhengxing.li, 2016-01-06 03:10:42]

zhengxing.li@intel.com changed reviewers:
+ bradnelson@chromium.org, chunyang.dai@intel.com, titzer@chromium.org,
weiliang.lin@intel.com

[zhengxing.li, 2016-01-06 03:10:42]

PTAL, thanks!

[titzer, 2016-01-06 18:14:57]

lgtm

[bradn, 2016-01-06 18:19:59]

bradnelson@google.com changed reviewers:
+ bradnelson@google.com

[bradn, 2016-01-06 18:20:00]

lgtm

[zhengxing.li, 2016-01-07 01:29:01]

The CQ bit was checked by zhengxing.li@intel.com

[commit-bot: I haz the power, 2016-01-07 01:29:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1561023002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1561023002/1

[commit-bot: I haz the power, 2016-01-07 01:52:40]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-07 01:53:30]

Description was changed from

==========
X87: [wasm] Change the test case for Run_WasmCall_Float32Sub

  The reason is same as the CL #31808 (issue 1430943002, X87: Change the test
case for X87 float operations), please refer:
https://codereview.chromium.org/1430943002/

  Here is the key comments from CL #31808
  Some new test cases use CheckFloatEq(...) and CheckDoubleEq(...) function for
result check. When GCC compiling the CheckFloatEq() and CheckDoubleEq()
function, those inlined functions has different behavior comparing with GCC ia32
build and x87 build.
  The major difference is sse float register still has single precision rounding
semantic. While X87 register has no such rounding precsion semantic when
directly use register value.
  The V8 turbofan JITTed has exactly same result in both X87 and IA32 port.

  So we add the following sentence to do type case to keep the same precision
for Run_WasmCall_Float32Sub.
  Such as: volatile float expect = *i +/- *j; // *i +/- *j, etc.

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

to

==========
X87: [wasm] Change the test case for Run_WasmCall_Float32Sub

  The reason is same as the CL #31808 (issue 1430943002, X87: Change the test
case for X87 float operations), please refer:
https://codereview.chromium.org/1430943002/

  Here is the key comments from CL #31808
  Some new test cases use CheckFloatEq(...) and CheckDoubleEq(...) function for
result check. When GCC compiling the CheckFloatEq() and CheckDoubleEq()
function, those inlined functions has different behavior comparing with GCC ia32
build and x87 build.
  The major difference is sse float register still has single precision rounding
semantic. While X87 register has no such rounding precsion semantic when
directly use register value.
  The V8 turbofan JITTed has exactly same result in both X87 and IA32 port.

  So we add the following sentence to do type case to keep the same precision
for Run_WasmCall_Float32Sub.
  Such as: volatile float expect = *i +/- *j; // *i +/- *j, etc.

BUG=

Committed: https://crrev.com/48bc94253fa4e8aaa69a1c11f195b729ff427729
Cr-Commit-Position: refs/heads/master@{#33143}
==========

[commit-bot: I haz the power, 2016-01-07 01:53:31]

Patchset 1 (id:??) landed as
https://crrev.com/48bc94253fa4e8aaa69a1c11f195b729ff427729
Cr-Commit-Position: refs/heads/master@{#33143}