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Merge pull request #15494 from everton1984:hal_vector_get_n

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Improving VSX performance of integral function

* Adding support for vector get function on VSX datatypes so the
integral function gains a bit of performance.

* Removing get as a datatype member function and implementing a new HAL
instruction v_extract_n to get the n-th element of a vector register.

* Adding SSE/NEON/AVX intrinsics.

* Implement new HAL instruction v_broadcast_element on VSX/AVX/NEON/SSE.

* core(simd): add tests for v_extract_n/v_broadcast_element

- updated docs
- commented out code to repair compilation
- added WASM and MSA default implementations

* core(simd): fix compilation

- x86: avoid _mm256_extract_epi64/32/16/8 with MSVS 2015
- x86: _mm_extract_epi64 is 64-bit only

* cleanup
This commit is contained in:
Everton Constantino
2019-11-20 07:41:07 -03:00
committed by Alexander Alekhin
parent 9d14c0b37a
commit 75315fb297
11 changed files with 546 additions and 20 deletions
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modules/imgproc/src/sumpixels.cpp
+4 -2
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@@ -147,7 +147,8 @@ struct Integral_SIMD<uchar, int, double>
v_expand(el8, el4l, el4h);
el4l += prev;
el4h += el4l;
prev = vx_setall_s32(v_rotate_right<v_int32::nlanes - 1>(el4h).get0());
prev = v_broadcast_element<v_int32::nlanes - 1>(el4h);
#endif
v_store(sum_row + j , el4l + vx_load(prev_sum_row + j ));
v_store(sum_row + j + v_int32::nlanes, el4h + vx_load(prev_sum_row + j + v_int32::nlanes));
@@ -215,7 +216,8 @@ struct Integral_SIMD<uchar, float, double>
v_expand(el8, el4li, el4hi);
el4l = v_cvt_f32(el4li) + prev;
el4h = v_cvt_f32(el4hi) + el4l;
prev = vx_setall_f32(v_rotate_right<v_float32::nlanes - 1>(el4h).get0());
prev = v_broadcast_element<v_float32::nlanes - 1>(el4h);
#endif
v_store(sum_row + j , el4l + vx_load(prev_sum_row + j ));
v_store(sum_row + j + v_float32::nlanes, el4h + vx_load(prev_sum_row + j + v_float32::nlanes));