> On Oct 3, 2023, at 00:47, Rémi Denis-Courmont <r...@remlab.net> wrote: > > > diff --git a/libavcodec/riscv/ac3dsp_rvb.S b/libavcodec/riscv/ac3dsp_rvb.S > new file mode 100644 > index 0000000000..48f8bb101e > --- /dev/null > +++ b/libavcodec/riscv/ac3dsp_rvb.S > > +func ff_extract_exponents_rvb, zbb > +1: > + lw t0, (a1) > + addi a0, a0, 1 > + neg t1, t0 > + addi a1, a1, 4 > + max t0, t0, t1 > + addi a2, a2, -1 > + clz t0, t0 > + addi t0, t0, 24 - __riscv_xlen > + sb t0, -1(a0) > + bgtz a2, 1b > + > + ret > +endfunc > —
Got build failure with clang 14: <instantiation>:6:21: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' .option arch, +zbb ^ src/libavcodec/riscv/ac3dsp_rvb.S:24:1: note: while in macro instantiation func ff_extract_exponents_rvb, zbb ^ src/libavcodec/riscv/ac3dsp_rvb.S:30:9: error: instruction requires the following: 'Zbb' (Basic Bit-Manipulation) max t0, t0, t1 ^ src/libavcodec/riscv/ac3dsp_rvb.S:32:9: error: instruction requires the following: 'Zbb' (Basic Bit-Manipulation) clz t0, t0 ^ make: *** [/home/quink/work/ffmpeg/ffbuild/common.mak:93: libavcodec/riscv/ac3dsp_rvb.o] Error 1 make: *** Waiting for unfinished jobs.... <instantiation>:6:21: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' .option arch, +f ^ src/libavcodec/riscv/audiodsp_rvf.S:23:1: note: while in macro instantiation func ff_vector_clipf_rvf, f ^ Someone says clang 14 has Zbb extensions support. I don’t know what’s going on. https://discourse.llvm.org/t/how-to-run-clang-llvm-for-riscv-target-machine-for-bitmanip-extension/64662 > 2.42.0 > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".