63 lines
1.0 KiB
ArmAsm
63 lines
1.0 KiB
ArmAsm
.intel_syntax noprefix
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.data
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.align 64
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SCALAR:
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.double 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0
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# rdi -> a
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# rsi -> idx
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# rdx -> N
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# rcx -> t
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.text
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.globl gather
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.type gather, @function
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gather :
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push rbp
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mov rbp, rsp
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push rbx
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push r12
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push r13
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push r14
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push r15
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xor rax, rax
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.align 16
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1:
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vpcmpeqb k1, xmm0, xmm0
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vpcmpeqb k2, xmm0, xmm0
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vpcmpeqb k3, xmm0, xmm0
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vpcmpeqb k4, xmm0, xmm0
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vmovdqu ymm0, [rsi + rax * 4]
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vmovdqu ymm1, [rsi + rax * 4 + 32]
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vmovdqu ymm2, [rsi + rax * 4 + 64]
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vmovdqu ymm3, [rsi + rax * 4 + 96]
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vpxord zmm4, zmm4, zmm4
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vpxord zmm5, zmm5, zmm5
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vpxord zmm6, zmm6, zmm6
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vpxord zmm7, zmm7, zmm7
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vgatherdpd zmm4{k1}, [rdi + ymm0 * 8]
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vgatherdpd zmm5{k2}, [rdi + ymm1 * 8]
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vgatherdpd zmm6{k3}, [rdi + ymm2 * 8]
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vgatherdpd zmm7{k4}, [rdi + ymm3 * 8]
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#ifdef TEST
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vmovapd [rcx + rax * 8], zmm4
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vmovapd [rcx + rax * 8 + 64], zmm5
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vmovapd [rcx + rax * 8 + 128], zmm6
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vmovapd [rcx + rax * 8 + 192], zmm7
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#endif
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addq rax, 32
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cmpq rax, rdx
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jl 1b
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pop r15
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pop r14
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pop r13
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pop r12
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pop rbx
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mov rsp, rbp
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pop rbp
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ret
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.size gather, .-gather
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