mirror of
https://github.com/RRZE-HPC/OSACA.git
synced 2025-07-21 12:41:05 +02:00
143 lines
2.8 KiB
ArmAsm
143 lines
2.8 KiB
ArmAsm
#define INSTR cmp
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#define NINST 64
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#define N edi
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#define i r8d
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.intel_syntax noprefix
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.globl ninst
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.data
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ninst:
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.long NINST
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.align 32
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PI:
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.long 0xf01b866e, 0x400921f9, 0xf01b866e, 0x400921f9, 0xf01b866e, 0x400921f9, 0xf01b866e, 0x400921f9, 0xf01b866e, 0x400921f9, 0xf01b866e, 0x400921f9, 0xf01b866e, 0x400921f9, 0xf01b866e, 0x400921f9
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.text
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.globl latency
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.type latency, @function
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.align 32
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latency:
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push rbp
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mov rbp, rsp
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xor i, i
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test N, N
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jle done
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# create DP 1.0
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vpcmpeqw xmm0, xmm0, xmm0 # all ones
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vpsllq xmm0, xmm0, 54 # logical left shift: 11111110..0 (54=64-(10-1))
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vpsrlq xmm0, xmm0, 2 # logical right shift: 1 bit for sign; leading mantissa bit is zero
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push rax
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push rbx
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push rcx
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push rdx
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push r9
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push r10
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push r11
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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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xor rbx, rbx
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xor rcx, rcx
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xor rdx, rdx
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xor r9, r9
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xor r10, r10
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xor r11, r11
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xor r12, r12
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xor r13, r13
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xor r14, r14
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xor r15, r15
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# copy DP 1.0
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vmovq rax, xmm0
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vmovq rbx, xmm0
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# Create DP 2.0
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add rbx, rax
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# Create DP 0.5
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div rax
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movq rcx, rax
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vmovq rax, xmm0
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loop:
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inc i
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INSTR edx, eax
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INSTR r9d, ebx
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INSTR r10d, ecx
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INSTR r11d, eax
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INSTR r12d, ebx
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INSTR r13d, ecx
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INSTR r14d, eax
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INSTR r15d, ebx
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INSTR edx, ecx
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INSTR r9d, eax
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INSTR r10d, ebx
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INSTR r11d, ecx
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INSTR r12d, eax
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INSTR r13d, ebx
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INSTR r14d, ecx
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INSTR r15d, eax
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INSTR edx, ebx
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INSTR r9d, ecx
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INSTR r10d, eax
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INSTR r11d, ebx
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INSTR r12d, ecx
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INSTR r13d, eax
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INSTR r14d, ebx
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INSTR r15d, ecx
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INSTR edx, eax
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INSTR r9d, ebx
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INSTR r10d, ecx
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INSTR r11d, eax
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INSTR r12d, ebx
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INSTR r13d, ecx
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INSTR r14d, eax
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INSTR r15d, ebx
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INSTR edx, ecx
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INSTR r9d, eax
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INSTR r10d, ebx
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INSTR r11d, ecx
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INSTR r12d, eax
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INSTR r13d, ebx
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INSTR r14d, ecx
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INSTR r15d, eax
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INSTR edx, ebx
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INSTR r9d, ecx
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INSTR r10d, eax
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INSTR r11d, ebx
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INSTR r12d, ecx
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INSTR r13d, eax
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INSTR r14d, ebx
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INSTR r15d, ecx
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INSTR edx, eax
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INSTR r9d, ebx
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INSTR r10d, ecx
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INSTR r11d, eax
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INSTR r12d, ebx
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INSTR r13d, ecx
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INSTR r14d, eax
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INSTR r15d, ebx
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INSTR edx, ecx
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INSTR r9d, eax
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INSTR r10d, ebx
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INSTR r11d, ecx
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INSTR r12d, eax
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INSTR r13d, ebx
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INSTR r14d, ecx
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INSTR r15d, eax
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cmp i, N
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jl loop
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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 r11
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pop r10
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pop r9
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pop rdx
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pop rcx
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pop rbx
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pop rax
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done:
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mov rsp, rbp
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pop rbp
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ret
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.size latency, .-latency |