libbb/sha1: shrink unrolled x86-64 code
function old new delta sha1_process_block64 3481 3384 -97 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
6f56fa1713
commit
8154146be4
@ -27,68 +27,60 @@ sha1_process_block64:
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# xmm7: all round constants
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# -64(%rsp): area for passing RCONST + W[] from vector to integer units
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movaps sha1const(%rip), %xmm7
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movaps bswap32_mask(%rip), %xmm4
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pshufd $0x00, %xmm7, %xmm6
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# Load W[] to xmm0..3, byteswapping on the fly.
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#
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# For iterations 0..15, we pass RCONST+W[] in rsi,r8..r14
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# for use in RD1As instead of spilling them to stack.
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# (We use rsi instead of rN because this makes two
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# ADDs in two first RD1As shorter by one byte).
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movups 16*0(%rdi), %xmm0
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pshufb %xmm4, %xmm0
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movaps %xmm0, %xmm5
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paddd %xmm6, %xmm5
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movq %xmm5, %rsi
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# pextrq $1, %xmm5, %r8 #SSE4.1 insn
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# movhpd %xmm5, %r8 #can only move to mem, not to reg
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shufps $0x0e, %xmm5, %xmm5
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movq %xmm5, %r8
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movups 16*1(%rdi), %xmm1
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pshufb %xmm4, %xmm1
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movaps %xmm1, %xmm5
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paddd %xmm6, %xmm5
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movq %xmm5, %r9
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shufps $0x0e, %xmm5, %xmm5
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movq %xmm5, %r10
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movups 16*2(%rdi), %xmm2
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pshufb %xmm4, %xmm2
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movaps %xmm2, %xmm5
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paddd %xmm6, %xmm5
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movq %xmm5, %r11
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shufps $0x0e, %xmm5, %xmm5
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movq %xmm5, %r12
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movups 16*3(%rdi), %xmm3
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pshufb %xmm4, %xmm3
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movaps %xmm3, %xmm5
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paddd %xmm6, %xmm5
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movq %xmm5, %r13
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shufps $0x0e, %xmm5, %xmm5
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movq %xmm5, %r14
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# MOVQs to GPRs (above) have somewhat high latency.
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# Load hash[] while they are completing:
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movl 80(%rdi), %eax # a = ctx->hash[0]
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movl 84(%rdi), %ebx # b = ctx->hash[1]
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movl 88(%rdi), %ecx # c = ctx->hash[2]
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movl 92(%rdi), %edx # d = ctx->hash[3]
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movl 96(%rdi), %ebp # e = ctx->hash[4]
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movaps sha1const(%rip), %xmm7
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pshufd $0x00, %xmm7, %xmm6
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# Load W[] to xmm registers, byteswapping on the fly.
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#
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# For iterations 0..15, we pass W[] in rsi,r8..r14
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# for use in RD1As instead of spilling them to stack.
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# We lose parallelized addition of RCONST, but LEA
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# can do two additions at once, so it is probably a wash.
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# (We use rsi instead of rN because this makes two
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# LEAs in two first RD1As shorter by one byte).
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movq 4*0(%rdi), %rsi
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movq 4*2(%rdi), %r8
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bswapq %rsi
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bswapq %r8
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rolq $32, %rsi # rsi = W[1]:W[0]
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rolq $32, %r8 # r8 = W[3]:W[2]
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movq %rsi, %xmm0
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movq %r8, %xmm4
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punpcklqdq %xmm4, %xmm0 # xmm0 = r8:rsi = (W[0],W[1],W[2],W[3])
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# movaps %xmm0, %xmm4 # add RCONST, spill to stack
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# paddd %xmm6, %xmm4
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# movups %xmm4, -64+16*0(%rsp)
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movq 4*4(%rdi), %r9
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movq 4*6(%rdi), %r10
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bswapq %r9
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bswapq %r10
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rolq $32, %r9 # r9 = W[5]:W[4]
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rolq $32, %r10 # r10 = W[7]:W[6]
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movq %r9, %xmm1
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movq %r10, %xmm4
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punpcklqdq %xmm4, %xmm1 # xmm1 = r10:r9 = (W[4],W[5],W[6],W[7])
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movq 4*8(%rdi), %r11
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movq 4*10(%rdi), %r12
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bswapq %r11
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bswapq %r12
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rolq $32, %r11 # r11 = W[9]:W[8]
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rolq $32, %r12 # r12 = W[11]:W[10]
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movq %r11, %xmm2
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movq %r12, %xmm4
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punpcklqdq %xmm4, %xmm2 # xmm2 = r12:r11 = (W[8],W[9],W[10],W[11])
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movq 4*12(%rdi), %r13
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movq 4*14(%rdi), %r14
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bswapq %r13
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bswapq %r14
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rolq $32, %r13 # r13 = W[13]:W[12]
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rolq $32, %r14 # r14 = W[15]:W[14]
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movq %r13, %xmm3
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movq %r14, %xmm4
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punpcklqdq %xmm4, %xmm3 # xmm3 = r14:r13 = (W[12],W[13],W[14],W[15])
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# 0
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leal 0x5A827999(%rbp,%rsi), %ebp # e += RCONST + W[n]
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addl %esi, %ebp # e += RCONST + W[n]
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shrq $32, %rsi
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movl %ecx, %edi # c
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xorl %edx, %edi # ^d
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@ -100,7 +92,7 @@ sha1_process_block64:
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addl %edi, %ebp # e += rotl32(a,5)
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rorl $2, %ebx # b = rotl32(b,30)
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# 1
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leal 0x5A827999(%rdx,%rsi), %edx # e += RCONST + W[n]
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addl %esi, %edx # e += RCONST + W[n]
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movl %ebx, %edi # c
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xorl %ecx, %edi # ^d
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andl %eax, %edi # &b
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@ -111,7 +103,7 @@ sha1_process_block64:
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addl %edi, %edx # e += rotl32(a,5)
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rorl $2, %eax # b = rotl32(b,30)
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# 2
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leal 0x5A827999(%rcx,%r8), %ecx # e += RCONST + W[n]
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addl %r8d, %ecx # e += RCONST + W[n]
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shrq $32, %r8
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movl %eax, %edi # c
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xorl %ebx, %edi # ^d
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@ -123,7 +115,7 @@ sha1_process_block64:
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addl %edi, %ecx # e += rotl32(a,5)
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rorl $2, %ebp # b = rotl32(b,30)
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# 3
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leal 0x5A827999(%rbx,%r8), %ebx # e += RCONST + W[n]
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addl %r8d, %ebx # e += RCONST + W[n]
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movl %ebp, %edi # c
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xorl %eax, %edi # ^d
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andl %edx, %edi # &b
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@ -134,7 +126,7 @@ sha1_process_block64:
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addl %edi, %ebx # e += rotl32(a,5)
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rorl $2, %edx # b = rotl32(b,30)
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# 4
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leal 0x5A827999(%rax,%r9), %eax # e += RCONST + W[n]
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addl %r9d, %eax # e += RCONST + W[n]
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shrq $32, %r9
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movl %edx, %edi # c
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xorl %ebp, %edi # ^d
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@ -146,7 +138,7 @@ sha1_process_block64:
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addl %edi, %eax # e += rotl32(a,5)
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rorl $2, %ecx # b = rotl32(b,30)
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# 5
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leal 0x5A827999(%rbp,%r9), %ebp # e += RCONST + W[n]
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addl %r9d, %ebp # e += RCONST + W[n]
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movl %ecx, %edi # c
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xorl %edx, %edi # ^d
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andl %ebx, %edi # &b
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@ -157,7 +149,7 @@ sha1_process_block64:
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addl %edi, %ebp # e += rotl32(a,5)
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rorl $2, %ebx # b = rotl32(b,30)
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# 6
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leal 0x5A827999(%rdx,%r10), %edx # e += RCONST + W[n]
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addl %r10d, %edx # e += RCONST + W[n]
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shrq $32, %r10
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movl %ebx, %edi # c
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xorl %ecx, %edi # ^d
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@ -169,7 +161,7 @@ sha1_process_block64:
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addl %edi, %edx # e += rotl32(a,5)
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rorl $2, %eax # b = rotl32(b,30)
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# 7
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leal 0x5A827999(%rcx,%r10), %ecx # e += RCONST + W[n]
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addl %r10d, %ecx # e += RCONST + W[n]
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movl %eax, %edi # c
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xorl %ebx, %edi # ^d
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andl %ebp, %edi # &b
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@ -210,7 +202,7 @@ sha1_process_block64:
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paddd %xmm6, %xmm5
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movups %xmm5, -64+16*0(%rsp)
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# 8
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leal 0x5A827999(%rbx,%r11), %ebx # e += RCONST + W[n]
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addl %r11d, %ebx # e += RCONST + W[n]
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shrq $32, %r11
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movl %ebp, %edi # c
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xorl %eax, %edi # ^d
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@ -222,7 +214,7 @@ sha1_process_block64:
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addl %edi, %ebx # e += rotl32(a,5)
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rorl $2, %edx # b = rotl32(b,30)
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# 9
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leal 0x5A827999(%rax,%r11), %eax # e += RCONST + W[n]
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addl %r11d, %eax # e += RCONST + W[n]
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movl %edx, %edi # c
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xorl %ebp, %edi # ^d
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andl %ecx, %edi # &b
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@ -233,7 +225,7 @@ sha1_process_block64:
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addl %edi, %eax # e += rotl32(a,5)
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rorl $2, %ecx # b = rotl32(b,30)
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# 10
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leal 0x5A827999(%rbp,%r12), %ebp # e += RCONST + W[n]
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addl %r12d, %ebp # e += RCONST + W[n]
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shrq $32, %r12
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movl %ecx, %edi # c
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xorl %edx, %edi # ^d
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@ -245,7 +237,7 @@ sha1_process_block64:
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addl %edi, %ebp # e += rotl32(a,5)
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rorl $2, %ebx # b = rotl32(b,30)
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# 11
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leal 0x5A827999(%rdx,%r12), %edx # e += RCONST + W[n]
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addl %r12d, %edx # e += RCONST + W[n]
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movl %ebx, %edi # c
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xorl %ecx, %edi # ^d
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andl %eax, %edi # &b
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@ -287,7 +279,7 @@ sha1_process_block64:
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paddd %xmm6, %xmm5
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movups %xmm5, -64+16*1(%rsp)
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# 12
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leal 0x5A827999(%rcx,%r13), %ecx # e += RCONST + W[n]
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addl %r13d, %ecx # e += RCONST + W[n]
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shrq $32, %r13
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movl %eax, %edi # c
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xorl %ebx, %edi # ^d
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@ -299,7 +291,7 @@ sha1_process_block64:
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addl %edi, %ecx # e += rotl32(a,5)
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rorl $2, %ebp # b = rotl32(b,30)
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# 13
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leal 0x5A827999(%rbx,%r13), %ebx # e += RCONST + W[n]
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addl %r13d, %ebx # e += RCONST + W[n]
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movl %ebp, %edi # c
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xorl %eax, %edi # ^d
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andl %edx, %edi # &b
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@ -310,7 +302,7 @@ sha1_process_block64:
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addl %edi, %ebx # e += rotl32(a,5)
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rorl $2, %edx # b = rotl32(b,30)
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# 14
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leal 0x5A827999(%rax,%r14), %eax # e += RCONST + W[n]
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addl %r14d, %eax # e += RCONST + W[n]
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shrq $32, %r14
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movl %edx, %edi # c
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xorl %ebp, %edi # ^d
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@ -322,7 +314,7 @@ sha1_process_block64:
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addl %edi, %eax # e += rotl32(a,5)
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rorl $2, %ecx # b = rotl32(b,30)
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# 15
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leal 0x5A827999(%rbp,%r14), %ebp # e += RCONST + W[n]
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addl %r14d, %ebp # e += RCONST + W[n]
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movl %ecx, %edi # c
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xorl %edx, %edi # ^d
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andl %ebx, %edi # &b
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@ -1475,6 +1467,11 @@ sha1_process_block64:
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ret
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.size sha1_process_block64, .-sha1_process_block64
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.section .rodata.cst16.bswap32_mask, "aM", @progbits, 16
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.balign 16
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bswap32_mask:
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.octa 0x0c0d0e0f08090a0b0405060700010203
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.section .rodata.cst16.sha1const, "aM", @progbits, 16
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.balign 16
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sha1const:
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@ -129,65 +129,57 @@ sha1_process_block64:
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# xmm7: all round constants
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# -64(%rsp): area for passing RCONST + W[] from vector to integer units
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movaps sha1const(%rip), $xmmALLRCONST
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movaps bswap32_mask(%rip), $xmmT1
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pshufd \$0x00, $xmmALLRCONST, $xmmRCONST
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# Load W[] to xmm0..3, byteswapping on the fly.
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#
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# For iterations 0..15, we pass RCONST+W[] in rsi,r8..r14
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# for use in RD1As instead of spilling them to stack.
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# (We use rsi instead of rN because this makes two
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# ADDs in two first RD1As shorter by one byte).
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movups 16*0(%rdi), %xmm0
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pshufb $xmmT1, %xmm0
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movaps %xmm0, $xmmT2
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paddd $xmmRCONST, $xmmT2
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movq $xmmT2, %rsi
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# pextrq \$1, $xmmT2, %r8 #SSE4.1 insn
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# movhpd $xmmT2, %r8 #can only move to mem, not to reg
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shufps \$0x0e, $xmmT2, $xmmT2
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movq $xmmT2, %r8
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movups 16*1(%rdi), %xmm1
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pshufb $xmmT1, %xmm1
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movaps %xmm1, $xmmT2
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paddd $xmmRCONST, $xmmT2
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movq $xmmT2, %r9
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shufps \$0x0e, $xmmT2, $xmmT2
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movq $xmmT2, %r10
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movups 16*2(%rdi), %xmm2
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pshufb $xmmT1, %xmm2
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movaps %xmm2, $xmmT2
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paddd $xmmRCONST, $xmmT2
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movq $xmmT2, %r11
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shufps \$0x0e, $xmmT2, $xmmT2
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movq $xmmT2, %r12
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movups 16*3(%rdi), %xmm3
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pshufb $xmmT1, %xmm3
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movaps %xmm3, $xmmT2
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paddd $xmmRCONST, $xmmT2
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movq $xmmT2, %r13
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shufps \$0x0e, $xmmT2, $xmmT2
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movq $xmmT2, %r14
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# MOVQs to GPRs (above) have somewhat high latency.
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# Load hash[] while they are completing:
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movl 80(%rdi), %eax # a = ctx->hash[0]
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movl 84(%rdi), %ebx # b = ctx->hash[1]
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movl 88(%rdi), %ecx # c = ctx->hash[2]
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movl 92(%rdi), %edx # d = ctx->hash[3]
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movl 96(%rdi), %ebp # e = ctx->hash[4]
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movaps sha1const(%rip), $xmmALLRCONST
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pshufd \$0x00, $xmmALLRCONST, $xmmRCONST
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# Load W[] to xmm registers, byteswapping on the fly.
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#
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# For iterations 0..15, we pass W[] in rsi,r8..r14
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# for use in RD1As instead of spilling them to stack.
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# We lose parallelized addition of RCONST, but LEA
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# can do two additions at once, so it is probably a wash.
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# (We use rsi instead of rN because this makes two
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# LEAs in two first RD1As shorter by one byte).
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movq 4*0(%rdi), %rsi
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movq 4*2(%rdi), %r8
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bswapq %rsi
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bswapq %r8
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rolq \$32, %rsi # rsi = W[1]:W[0]
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rolq \$32, %r8 # r8 = W[3]:W[2]
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movq %rsi, %xmm0
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movq %r8, $xmmT1
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punpcklqdq $xmmT1, %xmm0 # xmm0 = r8:rsi = (W[0],W[1],W[2],W[3])
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# movaps %xmm0, $xmmT1 # add RCONST, spill to stack
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# paddd $xmmRCONST, $xmmT1
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# movups $xmmT1, -64+16*0(%rsp)
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movq 4*4(%rdi), %r9
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movq 4*6(%rdi), %r10
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bswapq %r9
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bswapq %r10
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rolq \$32, %r9 # r9 = W[5]:W[4]
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rolq \$32, %r10 # r10 = W[7]:W[6]
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movq %r9, %xmm1
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movq %r10, $xmmT1
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punpcklqdq $xmmT1, %xmm1 # xmm1 = r10:r9 = (W[4],W[5],W[6],W[7])
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movq 4*8(%rdi), %r11
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movq 4*10(%rdi), %r12
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bswapq %r11
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bswapq %r12
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rolq \$32, %r11 # r11 = W[9]:W[8]
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rolq \$32, %r12 # r12 = W[11]:W[10]
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movq %r11, %xmm2
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movq %r12, $xmmT1
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punpcklqdq $xmmT1, %xmm2 # xmm2 = r12:r11 = (W[8],W[9],W[10],W[11])
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movq 4*12(%rdi), %r13
|
||||
movq 4*14(%rdi), %r14
|
||||
bswapq %r13
|
||||
bswapq %r14
|
||||
rolq \$32, %r13 # r13 = W[13]:W[12]
|
||||
rolq \$32, %r14 # r14 = W[15]:W[14]
|
||||
movq %r13, %xmm3
|
||||
movq %r14, $xmmT1
|
||||
punpcklqdq $xmmT1, %xmm3 # xmm3 = r14:r13 = (W[12],W[13],W[14],W[15])
|
||||
"
|
||||
|
||||
PREP() {
|
||||
@ -266,15 +258,15 @@ local rN=$((7+n0/2))
|
||||
echo "
|
||||
# $n
|
||||
";test $n0 = 0 && echo "
|
||||
leal $RCONST(%r$e,%rsi), %e$e # e += RCONST + W[n]
|
||||
addl %esi, %e$e # e += RCONST + W[n]
|
||||
shrq \$32, %rsi
|
||||
";test $n0 = 1 && echo "
|
||||
leal $RCONST(%r$e,%rsi), %e$e # e += RCONST + W[n]
|
||||
addl %esi, %e$e # e += RCONST + W[n]
|
||||
";test $n0 -ge 2 && test $((n0 & 1)) = 0 && echo "
|
||||
leal $RCONST(%r$e,%r$rN), %e$e # e += RCONST + W[n]
|
||||
addl %r${rN}d, %e$e # e += RCONST + W[n]
|
||||
shrq \$32, %r$rN
|
||||
";test $n0 -ge 2 && test $((n0 & 1)) = 1 && echo "
|
||||
leal $RCONST(%r$e,%r$rN), %e$e # e += RCONST + W[n]
|
||||
addl %r${rN}d, %e$e # e += RCONST + W[n]
|
||||
";echo "
|
||||
movl %e$c, %edi # c
|
||||
xorl %e$d, %edi # ^d
|
||||
@ -440,6 +432,11 @@ echo "
|
||||
ret
|
||||
.size sha1_process_block64, .-sha1_process_block64
|
||||
|
||||
.section .rodata.cst16.bswap32_mask, \"aM\", @progbits, 16
|
||||
.balign 16
|
||||
bswap32_mask:
|
||||
.octa 0x0c0d0e0f08090a0b0405060700010203
|
||||
|
||||
.section .rodata.cst16.sha1const, \"aM\", @progbits, 16
|
||||
.balign 16
|
||||
sha1const:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user