nb_kernel333_x86_64_sse2.s
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#### $Id: nb_kernel333_x86_64_sse2.s,v 1.4.2.3 2006/09/22 08:40:37 lindahl Exp $#### Gromacs 4.0 Copyright (c) 1991-2003 ## David van der Spoel, Erik Lindahl#### This program is free software; you can redistribute it and/or## modify it under the terms of the GNU General Public License## as published by the Free Software Foundation; either version 2## of the License, or (at your option) any later version.#### To help us fund GROMACS development, we humbly ask that you cite## the research papers on the package. Check out http://www.gromacs.org## ## And Hey:## Gnomes, ROck Monsters And Chili Sauce##.globl nb_kernel333_x86_64_sse2.globl _nb_kernel333_x86_64_sse2nb_kernel333_x86_64_sse2: _nb_kernel333_x86_64_sse2: ## Room for return address and rbp (16 bytes).set nb333_fshift, 16.set nb333_gid, 24.set nb333_pos, 32.set nb333_faction, 40.set nb333_charge, 48.set nb333_p_facel, 56.set nb333_argkrf, 64.set nb333_argcrf, 72.set nb333_Vc, 80.set nb333_type, 88.set nb333_p_ntype, 96.set nb333_vdwparam, 104.set nb333_Vvdw, 112.set nb333_p_tabscale, 120.set nb333_VFtab, 128.set nb333_invsqrta, 136.set nb333_dvda, 144.set nb333_p_gbtabscale, 152.set nb333_GBtab, 160.set nb333_p_nthreads, 168.set nb333_count, 176.set nb333_mtx, 184.set nb333_outeriter, 192.set nb333_inneriter, 200.set nb333_work, 208 ## stack offsets for local variables ## bottom of stack is cache-aligned for sse2 use .set nb333_ixO, 0.set nb333_iyO, 16.set nb333_izO, 32.set nb333_ixH1, 48.set nb333_iyH1, 64.set nb333_izH1, 80.set nb333_ixH2, 96.set nb333_iyH2, 112.set nb333_izH2, 128.set nb333_ixM, 144.set nb333_iyM, 160.set nb333_izM, 176.set nb333_iqM, 192.set nb333_iqH, 208.set nb333_dxO, 224.set nb333_dyO, 240.set nb333_dzO, 256.set nb333_dxH1, 272.set nb333_dyH1, 288.set nb333_dzH1, 304.set nb333_dxH2, 320.set nb333_dyH2, 336.set nb333_dzH2, 352.set nb333_dxM, 368.set nb333_dyM, 384.set nb333_dzM, 400.set nb333_qqM, 416.set nb333_qqH, 432.set nb333_rinvO, 448.set nb333_rinvH1, 464.set nb333_rinvH2, 480.set nb333_rinvM, 496.set nb333_rO, 512.set nb333_rH1, 528.set nb333_rH2, 544.set nb333_rM, 560.set nb333_tsc, 576.set nb333_two, 592.set nb333_c6, 608.set nb333_c12, 624.set nb333_vctot, 640.set nb333_Vvdwtot, 656.set nb333_fixO, 672.set nb333_fiyO, 688.set nb333_fizO, 704.set nb333_fixH1, 720.set nb333_fiyH1, 736.set nb333_fizH1, 752.set nb333_fixH2, 768.set nb333_fiyH2, 784.set nb333_fizH2, 800.set nb333_fixM, 816.set nb333_fiyM, 832.set nb333_fizM, 848.set nb333_fjx, 864.set nb333_fjy, 880.set nb333_fjz, 896.set nb333_half, 912.set nb333_three, 928.set nb333_is3, 944.set nb333_ii3, 948.set nb333_nri, 952.set nb333_iinr, 960.set nb333_jindex, 968.set nb333_jjnr, 976.set nb333_shift, 984.set nb333_shiftvec, 992.set nb333_facel, 1000.set nb333_innerjjnr, 1008.set nb333_ntia, 1016.set nb333_innerk, 1020.set nb333_n, 1024.set nb333_nn1, 1028.set nb333_nouter, 1032.set nb333_ninner, 1036 push %rbp movq %rsp,%rbp push %rbx emms push %r12 push %r13 push %r14 push %r15 subq $1048,%rsp ## local variable stack space (n*16+8) ## zero 32-bit iteration counters movl $0,%eax movl %eax,nb333_nouter(%rsp) movl %eax,nb333_ninner(%rsp) movl (%rdi),%edi movl %edi,nb333_nri(%rsp) movq %rsi,nb333_iinr(%rsp) movq %rdx,nb333_jindex(%rsp) movq %rcx,nb333_jjnr(%rsp) movq %r8,nb333_shift(%rsp) movq %r9,nb333_shiftvec(%rsp) movq nb333_p_facel(%rbp),%rsi movsd (%rsi),%xmm0 movsd %xmm0,nb333_facel(%rsp) movq nb333_p_tabscale(%rbp),%rax movsd (%rax),%xmm3 shufpd $0,%xmm3,%xmm3 movapd %xmm3,nb333_tsc(%rsp) ## create constant floating-point factors on stack movl $0x00000000,%eax ## lower half of double half IEEE (hex) movl $0x3fe00000,%ebx movl %eax,nb333_half(%rsp) movl %ebx,nb333_half+4(%rsp) movsd nb333_half(%rsp),%xmm1 shufpd $0,%xmm1,%xmm1 ## splat to all elements movapd %xmm1,%xmm3 addpd %xmm3,%xmm3 ## one movapd %xmm3,%xmm2 addpd %xmm2,%xmm2 ## two addpd %xmm2,%xmm3 ## three movapd %xmm1,nb333_half(%rsp) movapd %xmm2,nb333_two(%rsp) movapd %xmm3,nb333_three(%rsp) ## assume we have at least one i particle - start directly movq nb333_iinr(%rsp),%rcx ## rcx = pointer into iinr[] movl (%rcx),%ebx ## ebx =ii movq nb333_charge(%rbp),%rdx movsd 8(%rdx,%rbx,8),%xmm3 movsd 24(%rdx,%rbx,8),%xmm4 movq nb333_p_facel(%rbp),%rsi movsd (%rsi),%xmm0 movsd nb333_facel(%rsp),%xmm5 mulsd %xmm5,%xmm3 mulsd %xmm5,%xmm4 shufpd $0,%xmm3,%xmm3 shufpd $0,%xmm4,%xmm4 movapd %xmm3,nb333_iqH(%rsp) movapd %xmm4,nb333_iqM(%rsp) movq nb333_type(%rbp),%rdx movl (%rdx,%rbx,4),%ecx shll %ecx movq nb333_p_ntype(%rbp),%rdi imull (%rdi),%ecx ## rcx = ntia = 2*ntype*type[ii0] movl %ecx,nb333_ntia(%rsp)_nb_kernel333_x86_64_sse2.nb333_threadloop: movq nb333_count(%rbp),%rsi ## pointer to sync counter movl (%rsi),%eax_nb_kernel333_x86_64_sse2.nb333_spinlock: movl %eax,%ebx ## ebx=*count=nn0 addl $1,%ebx ## ebx=nn1=nn0+10 lock cmpxchgl %ebx,(%rsi) ## write nn1 to *counter, ## if it hasnt changed. ## or reread *counter to eax. pause ## -> better p4 performance jnz _nb_kernel333_x86_64_sse2.nb333_spinlock ## if(nn1>nri) nn1=nri movl nb333_nri(%rsp),%ecx movl %ecx,%edx subl %ebx,%ecx cmovlel %edx,%ebx ## if(nn1>nri) nn1=nri ## Cleared the spinlock if we got here. ## eax contains nn0, ebx contains nn1. movl %eax,nb333_n(%rsp) movl %ebx,nb333_nn1(%rsp) subl %eax,%ebx ## calc number of outer lists movl %eax,%esi ## copy n to esi jg _nb_kernel333_x86_64_sse2.nb333_outerstart jmp _nb_kernel333_x86_64_sse2.nb333_end_nb_kernel333_x86_64_sse2.nb333_outerstart: ## ebx contains number of outer iterations addl nb333_nouter(%rsp),%ebx movl %ebx,nb333_nouter(%rsp)_nb_kernel333_x86_64_sse2.nb333_outer: movq nb333_shift(%rsp),%rax ## rax = pointer into shift[] movl (%rax,%rsi,4),%ebx ## rbx=shift[n] lea (%rbx,%rbx,2),%rbx ## rbx=3*is movl %ebx,nb333_is3(%rsp) ## store is3 movq nb333_shiftvec(%rsp),%rax ## rax = base of shiftvec[] movsd (%rax,%rbx,8),%xmm0 movsd 8(%rax,%rbx,8),%xmm1 movsd 16(%rax,%rbx,8),%xmm2 movq nb333_iinr(%rsp),%rcx ## rcx = pointer into iinr[] movl (%rcx,%rsi,4),%ebx ## ebx =ii movapd %xmm0,%xmm3 movapd %xmm1,%xmm4 movapd %xmm2,%xmm5 movapd %xmm0,%xmm6 movapd %xmm1,%xmm7 lea (%rbx,%rbx,2),%rbx ## rbx = 3*ii=ii3 movq nb333_pos(%rbp),%rax ## rax = base of pos[] movl %ebx,nb333_ii3(%rsp) addsd (%rax,%rbx,8),%xmm3 ## ox addsd 8(%rax,%rbx,8),%xmm4 ## oy addsd 16(%rax,%rbx,8),%xmm5 ## oz addsd 24(%rax,%rbx,8),%xmm6 ## h1x addsd 32(%rax,%rbx,8),%xmm7 ## h1y shufpd $0,%xmm3,%xmm3 shufpd $0,%xmm4,%xmm4 shufpd $0,%xmm5,%xmm5 shufpd $0,%xmm6,%xmm6 shufpd $0,%xmm7,%xmm7 movapd %xmm3,nb333_ixO(%rsp) movapd %xmm4,nb333_iyO(%rsp) movapd %xmm5,nb333_izO(%rsp) movapd %xmm6,nb333_ixH1(%rsp) movapd %xmm7,nb333_iyH1(%rsp) movsd %xmm2,%xmm6 movsd %xmm0,%xmm3 movsd %xmm1,%xmm4 movsd %xmm2,%xmm5 addsd 40(%rax,%rbx,8),%xmm6 ## h1z addsd 48(%rax,%rbx,8),%xmm0 ## h2x addsd 56(%rax,%rbx,8),%xmm1 ## h2y addsd 64(%rax,%rbx,8),%xmm2 ## h2z addsd 72(%rax,%rbx,8),%xmm3 ## mx addsd 80(%rax,%rbx,8),%xmm4 ## my addsd 88(%rax,%rbx,8),%xmm5 ## mz shufpd $0,%xmm6,%xmm6 shufpd $0,%xmm0,%xmm0 shufpd $0,%xmm1,%xmm1 shufpd $0,%xmm2,%xmm2 shufpd $0,%xmm3,%xmm3 shufpd $0,%xmm4,%xmm4 shufpd $0,%xmm5,%xmm5 movapd %xmm6,nb333_izH1(%rsp) movapd %xmm0,nb333_ixH2(%rsp) movapd %xmm1,nb333_iyH2(%rsp) movapd %xmm2,nb333_izH2(%rsp) movapd %xmm3,nb333_ixM(%rsp) movapd %xmm4,nb333_iyM(%rsp) movapd %xmm5,nb333_izM(%rsp) ## clear vctot and i forces xorpd %xmm4,%xmm4 movapd %xmm4,nb333_vctot(%rsp) movapd %xmm4,nb333_Vvdwtot(%rsp) movapd %xmm4,nb333_fixO(%rsp) movapd %xmm4,nb333_fiyO(%rsp) movapd %xmm4,nb333_fizO(%rsp) movapd %xmm4,nb333_fixH1(%rsp) movapd %xmm4,nb333_fiyH1(%rsp) movapd %xmm4,nb333_fizH1(%rsp) movapd %xmm4,nb333_fixH2(%rsp) movapd %xmm4,nb333_fiyH2(%rsp) movapd %xmm4,nb333_fizH2(%rsp) movapd %xmm4,nb333_fixM(%rsp) movapd %xmm4,nb333_fiyM(%rsp) movapd %xmm4,nb333_fizM(%rsp) movq nb333_jindex(%rsp),%rax movl (%rax,%rsi,4),%ecx ## jindex[n] movl 4(%rax,%rsi,4),%edx ## jindex[n+1] subl %ecx,%edx ## number of innerloop atoms movq nb333_pos(%rbp),%rsi movq nb333_faction(%rbp),%rdi movq nb333_jjnr(%rsp),%rax shll $2,%ecx addq %rcx,%rax movq %rax,nb333_innerjjnr(%rsp) ## pointer to jjnr[nj0] movl %edx,%ecx subl $2,%edx addl nb333_ninner(%rsp),%ecx movl %ecx,nb333_ninner(%rsp) addl $0,%edx movl %edx,nb333_innerk(%rsp) ## number of innerloop atoms jge _nb_kernel333_x86_64_sse2.nb333_unroll_loop jmp _nb_kernel333_x86_64_sse2.nb333_checksingle_nb_kernel333_x86_64_sse2.nb333_unroll_loop: ## twice unrolled innerloop here movq nb333_innerjjnr(%rsp),%rdx ## pointer to jjnr[k] movl (%rdx),%eax movl 4(%rdx),%ebx addq $8,nb333_innerjjnr(%rsp) ## advance pointer (unrolled 2) movq nb333_charge(%rbp),%rsi ## base of charge[] movlpd (%rsi,%rax,8),%xmm3 movhpd (%rsi,%rbx,8),%xmm3 movapd %xmm3,%xmm4 mulpd nb333_iqM(%rsp),%xmm3 mulpd nb333_iqH(%rsp),%xmm4 movapd %xmm3,nb333_qqM(%rsp) movapd %xmm4,nb333_qqH(%rsp) movq nb333_type(%rbp),%rsi movl (%rsi,%rax,4),%r8d movl (%rsi,%rbx,4),%r9d movq nb333_vdwparam(%rbp),%rsi shll %r8d shll %r9d movl nb333_ntia(%rsp),%edi addl %edi,%r8d addl %edi,%r9d movlpd (%rsi,%r8,8),%xmm6 ## c6a movlpd (%rsi,%r9,8),%xmm7 ## c6b movhpd 8(%rsi,%r8,8),%xmm6 ## c6a c12a movhpd 8(%rsi,%r9,8),%xmm7 ## c6b c12b movapd %xmm6,%xmm4 unpcklpd %xmm7,%xmm4 unpckhpd %xmm7,%xmm6 movapd %xmm4,nb333_c6(%rsp) movapd %xmm6,nb333_c12(%rsp) movq nb333_pos(%rbp),%rsi ## base of pos[] lea (%rax,%rax,2),%rax ## replace jnr with j3 lea (%rbx,%rbx,2),%rbx ## move j coordinates to local temp variables movlpd (%rsi,%rax,8),%xmm0 movlpd 8(%rsi,%rax,8),%xmm1 movlpd 16(%rsi,%rax,8),%xmm2 movhpd (%rsi,%rbx,8),%xmm0 movhpd 8(%rsi,%rbx,8),%xmm1 movhpd 16(%rsi,%rbx,8),%xmm2 ## xmm0 = jx ## xmm1 = jy ## xmm2 = jz ## O interaction ## copy to xmm3-xmm5 movapd %xmm0,%xmm3 movapd %xmm1,%xmm4 movapd %xmm2,%xmm5 subpd nb333_ixO(%rsp),%xmm3 subpd nb333_iyO(%rsp),%xmm4 subpd nb333_izO(%rsp),%xmm5 movapd %xmm3,nb333_dxO(%rsp) movapd %xmm4,nb333_dyO(%rsp) movapd %xmm5,nb333_dzO(%rsp) mulpd %xmm3,%xmm3 mulpd %xmm4,%xmm4 mulpd %xmm5,%xmm5 addpd %xmm4,%xmm3 addpd %xmm5,%xmm3 ## xmm3=rsq cvtpd2ps %xmm3,%xmm5 rsqrtps %xmm5,%xmm5 cvtps2pd %xmm5,%xmm15 ## lu in low xmm2 ## lookup seed in xmm2 movapd %xmm15,%xmm5 ## copy of lu mulpd %xmm15,%xmm15 ## lu*lu movapd nb333_three(%rsp),%xmm7 mulpd %xmm3,%xmm15 ## rsq*lu*lu movapd nb333_half(%rsp),%xmm6 subpd %xmm15,%xmm7 ## 30-rsq*lu*lu mulpd %xmm5,%xmm7 mulpd %xmm6,%xmm7 ## xmm0=iter1 of rinv (new lu) movapd %xmm7,%xmm5 ## copy of lu mulpd %xmm7,%xmm7 ## lu*lu movapd nb333_three(%rsp),%xmm15 mulpd %xmm3,%xmm7 ## rsq*lu*lu movapd nb333_half(%rsp),%xmm6 subpd %xmm7,%xmm15 ## 30-rsq*lu*lu mulpd %xmm5,%xmm15 mulpd %xmm6,%xmm15 ## xmm15=rinv mulpd %xmm15,%xmm3 ## 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