add Intel Code Analyst markers

add Intel Code Analyst markers

add macros to enable/disable code analyst around blocks of code.

Normally these macros should not be used, but if performance
details are wanted for intel code, enable them around the code
and then run via the iaca tool, available on the intel website.

BUG=libyuv:670
TEST=~/iaca-lin64/bin/iaca.sh -64 out/Release/libyuv_unittest
R=wangcheng@google.com

Committed: https://chromium.googlesource.com/libyuv/libyuv/+/a7c87e19f010f109a03e99abfe664ba35d8b8e62

[fbarchard1, 2017-01-13 02:12:07]

fbarchard@google.com changed reviewers:
+ janwas@google.com

[fbarchard1, 2017-01-13 02:12:08]

Add macros for Intel Architecture Code Analyst that can be embedded into gcc
style assembly.

[fbarchard1, 2017-01-13 02:14:43]

https://codereview.chromium.org/2626193002/diff/20001/source/convert_to_argb.cc
File source/convert_to_argb.cc (right):

https://codereview.chromium.org/2626193002/diff/20001/source/convert_to_argb....
source/convert_to_argb.cc:261: inv_crop_height, rotation);
fyi ran clang-format on everything

https://codereview.chromium.org/2626193002/diff/20001/source/row_gcc.cc
File source/row_gcc.cc (right):

https://codereview.chromium.org/2626193002/diff/20001/source/row_gcc.cc#newco...
source/row_gcc.cc:2465: IACA_ASM_START
this is an example of usage.  will be removed before checkin

https://codereview.chromium.org/2626193002/diff/20001/unit_test/convert_test.cc
File unit_test/convert_test.cc (right):

https://codereview.chromium.org/2626193002/diff/20001/unit_test/convert_test....
unit_test/convert_test.cc:1928: int r =
ConvertToARGB(reinterpret_cast<uint8_t*>(src),
ditto... just clang-formatted.

[fbarchard1, 2017-01-13 18:34:34]

make ifdefs check cpu, which implies gcc or clang.  should work for clangcl as
well.

[wangcheng, 2017-01-13 23:28:03]

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

[wangcheng, 2017-01-13 23:28:03]

lgtm

[fbarchard1, 2017-01-13 23:50:26]

Description was changed from

==========
add Intel Code Analyst markers

add macros to enable/disable code analyst around blocks of code.

Normally these macros should not be used, but if performance
details are wanted for intel code, enable them around the code
and then run via the iaca tool, available on the intel website.

BUG=libyuv:670
TEST=~/iaca-lin64/bin/iaca.sh -64 out/Release/libyuv_unittest
==========

to

==========
add Intel Code Analyst markers

add macros to enable/disable code analyst around blocks of code.

Normally these macros should not be used, but if performance
details are wanted for intel code, enable them around the code
and then run via the iaca tool, available on the intel website.

BUG=libyuv:670
TEST=~/iaca-lin64/bin/iaca.sh -64 out/Release/libyuv_unittest
R=wangcheng@google.com

Committed:
https://chromium.googlesource.com/libyuv/libyuv/+/a7c87e19f010f109a03e99abfe6...
==========

[fbarchard1, 2017-01-13 23:50:27]

Committed patchset #6 (id:100001) manually as
a7c87e19f010f109a03e99abfe664ba35d8b8e62 (presubmit successful).