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3d9f171bfb
memset with zero as the value to set is by far the majority value (99%+ for Python3 and GCC). bzero can be slightly more optimized for this case by using a zero-idiom xor for broadcasting the set value to a register (vector or GPR). Co-developed-by: Noah Goldstein <goldstein.w.n@gmail.com>
45 lines
1015 B
ArmAsm
45 lines
1015 B
ArmAsm
#if IS_IN (libc)
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# define USE_WITH_AVX2 1
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# define VEC_SIZE 32
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# define MOV_SIZE 4
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# define RET_SIZE 4
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# define VEC(i) ymm##i
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# define VMOVU vmovdqu
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# define VMOVA vmovdqa
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# define MEMSET_SET_VEC0_AND_SET_RETURN(d, r) \
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vmovd d, %xmm0; \
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movq r, %rax;
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# define BZERO_ZERO_VEC0() \
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vpxor %xmm0, %xmm0, %xmm0
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# define WMEMSET_SET_VEC0_AND_SET_RETURN(d, r) \
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MEMSET_SET_VEC0_AND_SET_RETURN(d, r)
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# define MEMSET_VDUP_TO_VEC0_HIGH() vpbroadcastb %xmm0, %ymm0
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# define MEMSET_VDUP_TO_VEC0_LOW() vpbroadcastb %xmm0, %xmm0
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# define WMEMSET_VDUP_TO_VEC0_HIGH() vpbroadcastd %xmm0, %ymm0
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# define WMEMSET_VDUP_TO_VEC0_LOW() vpbroadcastd %xmm0, %xmm0
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# ifndef SECTION
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# define SECTION(p) p##.avx
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# endif
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# ifndef MEMSET_SYMBOL
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# define MEMSET_SYMBOL(p,s) p##_avx2_##s
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# endif
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# ifndef BZERO_SYMBOL
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# define BZERO_SYMBOL(p,s) p##_avx2_##s
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# endif
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# ifndef WMEMSET_SYMBOL
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# define WMEMSET_SYMBOL(p,s) p##_avx2_##s
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# endif
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# define USE_XMM_LESS_VEC
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# include "memset-vec-unaligned-erms.S"
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#endif
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