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Add Loongson Advanced SIMD Extension support: -DCPU_BASELINE=LASX

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* Add Loongson Advanced SIMD Extension support: -DCPU_BASELINE=LASX
* Add resize.lasx.cpp for Loongson SIMD acceleration
* Add imgwarp.lasx.cpp for Loongson SIMD acceleration
* Add LASX acceleration support for dnn/conv
* Add CV_PAUSE(v) for Loongarch
* Set LASX by default on Loongarch64
* LoongArch: tune test threshold for Core/HAL.mat_decomp/15

Co-authored-by: shengwenxue <shengwenxue@loongson.cn>
This commit is contained in:
wxsheng
2022-09-10 14:39:43 +08:00
committed by GitHub
parent 866191478f
commit 4154bd0667
24 changed files with 5071 additions and 6 deletions
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modules/core/src/parallel_impl.cpp
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@@ -59,6 +59,8 @@ DECLARE_CV_PAUSE
// https://github.com/riscv/riscv-isa-manual/issues/43
// # define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { asm volatile("pause"); } } while (0)
# define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { asm volatile("nop"); } } while (0)
# elif defined __GNUC__ && defined __loongarch__
# define CV_PAUSE(v) do { for (int __delay = (v); __delay > 0; --__delay) { asm volatile("nop"); } } while (0)
# else
# warning "Can't detect 'pause' (CPU-yield) instruction on the target platform. Specify CV_PAUSE() definition via compiler flags."
# define CV_PAUSE(...) do { /* no-op: works, but not effective */ } while (0)