6 Commits

Author	SHA1	Message	Date
Rasmus Munk Larsen	e2ea866515	Add a macro to set the nr trait in the BEBP kernel for NEON.	2022-09-22 23:56:34 +00:00
Lianhuang Li	23299632c2	Use 3px8/2px8/1px8/1x8 gebp_kernel on arm64-neon	2022-09-21 16:36:40 +00:00
Antonio Sánchez	9b9496ad98	Revert "Add AVX512 optimizations for matrix multiply" ... This reverts commit 25db0b4a82	2022-05-13 18:50:33 +00:00
aaraujom	25db0b4a82	Add AVX512 optimizations for matrix multiply	2022-05-12 23:41:19 +00:00
Rasmus Munk Larsen	d7d0bf832d	Issue an error in case of direct inclusion of internal headers.	2021-09-10 19:12:26 +00:00
Antonio Sanchez	f85038b7f3	Fix excessive GEBP register spilling for 32-bit NEON. ... Clang does a poor job of optimizing the GEBP microkernel on 32-bit ARM, leading to excessive 16-byte register spills, slowing down basic f32 matrix multiplication by approx 50%. By specializing `gebp_traits`, we can eliminate the register spills. Volatile inline ASM both acts as a barrier to prevent reordering and enforces strict register use. In a simple f32 matrix multiply example, this modification reduces 16-byte spills from 109 instances to zero, leading to a 1.5x speed increase (search for `16-byte Spill` in the assembly in https://godbolt.org/z/chsPbE). This is a replacement of !379. See there for further discussion. Also moved `gebp_traits` specializations for NEON to `Eigen/src/Core/arch/NEON/GeneralBlockPanelKernel.h` to be alongside other NEON-specific code. Fixes #2138.	2021-02-03 09:01:48 -08:00