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FFmpeg/libavutil/riscv

History

Rémi Denis-Courmont 96a83ceea4 riscv: fix scalar product initialisation ... VSETVLI xd, x0, ...' has rather nonobvious semantics: - If xd is x0, then it preserves the current vector length. - If xd is not x0, it sets the vector length to the supported maximum. Also somewhat confusingly, while VMV.X.S always does its thing regardless of the selected vector length, VMV.S.X does _nothing_ if the selected vector length is zero. So the current code breaks fails to initialise the accumulator if we are unlucky to have a selected vector length of zero on entry. Fix it by forcing the vector length to one.		2 years ago
..
Makefile	lavu/fixeddsp: RISC-V V butterflies_fixed	2 years ago
asm.S	lavu/riscv: helper macro for VTYPE encoding	2 years ago
bswap.h	lavu/riscv: byte-swap operations	2 years ago
cpu.c	lavu/riscv: CPU flag for the Zbb extension	2 years ago
cpu.h	lavu/riscv: helper to read the vector length	2 years ago
fixed_dsp_init.c	lavu/fixeddsp: RISC-V V butterflies_fixed	2 years ago
fixed_dsp_rvv.S	riscv: remove unnecessary #include's	2 years ago
float_dsp_init.c	lavu/floatdsp: RISC-V V scalarproduct_float	2 years ago
float_dsp_rvv.S	riscv: fix scalar product initialisation	2 years ago
intmath.h	lavu/riscv: fix off-by-one in bit-magnitude clip	2 years ago
timer.h	…