Relocate the function from SSSE3 to SSE2, Unroll loop from 4 to 2,
and reduce mem access to left.
Speed up by >20% in ./test_intra_pred_speed.

Change-Id: Ib9f1846819783b6e05e2a310c930eb844b2b4d2e

8x8 Intra predictor implemented with MMX is replaced with SSE2.

Change-Id: I0c90e7c1e1e6942489ac2bfe58903b728aac7a52

4x4 Intra predictor implemented with MMX is replaced with SSE2.

Change-Id: Id57da2a7c38832d0356bc998790fc1989d39eafc

Fixes crash in 2pass spatial svc test that was introduced in:
https://chromium-review.googlesource.com/#/c/313571/6

Change-Id: Iab3e8225a8d159cd33f5849dffe6802e25038047

Fixes spatial svc rc assert failure introdcued in:
https://chromium-review.googlesource.com/#/c/312959/1

Change-Id: I6096bfbc484859d71a5fb55e6a3248a31885af61

Fixes bug introduced in
https://chromium-review.googlesource.com/#/c/299482/5

Change-Id: If542c1a917380465dd9bc4ce5e32b0adbb20e340

For non-rd variance partition: only allow minmax computation
(which currently has no arm-neon optimization) for speeds < 8.

Performance loss is small: On RTC set with speed 8, few clips lose ~2/3%,
average loss is < 1%.

Change-Id: Ia9414f4d0b77dc83c3e73ca8de5d903f64b425ce

Relocate h_predictor_4x4 from SSSE3 to SSE2 with XMM registers.
Speed up by ~25% in ./test_intra_pred_speed.

Change-Id: I64e14c13b482a471449be3559bfb0da45cf88d9d

Change initial state of noise level, and only update
denoiser with noise level when estimate is done.

Change-Id: If44090d29949d3e4927e855d88241634cdb395dc

This fix allows to enable reuse_inter_pred.

Change-Id: I53f2bf1163bb0036ffb6df92117a86debdca11d1

Change-Id: I3ba4ede553e068bf116dce59d1317347988b3542

* changes:
  add vp9_satd_neon
  fix vp9_satd_sse2
  vp9_satd: return an int

For denoising, and for noise level above threshold, re-evaluate
ZEROMV for mode selection after denoising.
Current change only does this check if selected best mode (before denoising)
was intra.

Change-Id: I4b1435b68d26c78f7597b995ee7bff0ddd5f9511

Fixes a spatial_svc breakage introduced in
https://chromium-review.googlesource.com/#/c/305228/3.

Change-Id: I7f2cecbdca980addb85d5e58b58b5454f4730ada

~60-65% faster at the function level across block sizes

Change-Id: Iaf8cbe95731c43fdcbf68256e44284ba51a93893

Left neighbor read from memory only once.
Speed up by ~20% in ./test_intra_pred_speed.

Change-Id: Ia1388630df6fed0dce9a6eeded6cb855bbc43505

zeromv_lastref_sse was not reset.

Change-Id: I23c12e804d63dc7dc18514f6efe71de1d1acbd6a

This change makes sure last reference with zero mv
is always checked for mode selection.

No change in metrics.

Change-Id: Iaf01877bf34272b966c78bfe18daad882a0a419e

The counts are never used when frame_parallel_decoding_mode
is set.

Change-Id: I293aa68abadcdd30973adacb9f5f5a3aecf8daa2

Change-Id: Ic0ec32c1d7f7c08c9f956592dccbfd9060b1f624

and fixed macro name.

Change-Id: I306b98a2b4ec80b130ae80290b4cd9c7a5363311

This reverts commit d76032ae.

breaks 32-bit builds

Change-Id: If6266ec2a405b5a21d615112f0f37e8a71193858

Change-Id: I6a360a12e8da8cdcb8a779647512591612d64f31

accumulate satd in 32-bits
+ add unit test

Change-Id: I6748183df3662ddb9d635f9641f9586f2fd38ad5

the final sum may use up to 26 bits

+ add a unit test
+ disable the sse2 as the result will rollover; this will be fixed in a
future commit

Change-Id: I2a49811dfaa06abfd9fa1e1e65ed7cd68e4c97ce