Issue when building iOS for arm64 about xnnpack HOT 4 CLOSED

@Maratyszcza I found the issue. It was a typo in CMakeLists.txt at line #1464. XNNPACK_AARCH64_ASM_UKERNELS doesn't exist. Same for the armv7. Will open a PR .

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The file you mentioned doesn't use the -march=armv8.2-a+fp16 flag, so it is something else.
Which version of XCode do you use? Do you see this error with other files?

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yea, you're right, nothing to do with -march=armv8.2-a+fp16. Sorry for the confusion. I'm using XCode 11.3.1. Basically, all files inXNNPACK_AARCH64_ASM_MICROKERNEL_SRCScan't be compiled on my machine. The errors are different, but mainly complain about the unknown assembly syntax.

...

/Users/taox/Projects/XNNPACK/src/f32-gemm/gen-inc/6x8-aarch64-neonfma-cortex-a73.S:653:21: error: brackets expression not supported on this target

/Users/taox/Projects/XNNPACK/src/f32-gemm/gen-inc/6x8-aarch64-neonfma-cortex-a73.S:657:1: error: assembler local symbol 'LO' not defined

/Users/taox/Projects/XNNPACK/src/f32-gemm/gen-inc/6x8-aarch64-neonfma-cortex-a73.S:657:1: error: assembler local symbol 'LS' not defined

However, after I disabled the ASM by commenting out XNNPACK_AARCH64_ASM_MICROKERNEL_SRCS and disabling the macro XNN_ENABLE_ASSEMBLY, it worked. The generated libXNNPACK.a was 1.1 MB.

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The assembly snippets in LLVM test suite seems to use # (hash) before the offset in memory instructions: https://github.com/llvm/llvm-project/blob/364b8f5fbe0ac496931dcbd6f0493781f0677e82/llvm/test/MC/AArch64/basic-a64-instructions.s#L3016
Could you check if adding a hash (LDP d8, d9, [sp], 64 -> LDP d8, d9, [sp], #64) helps?

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