Files
blis/kernels/penryn/3/bli_gemmtrsm_l_penryn_asm_d4x4.c
Field G. Van Zee 7038bbaa05 Optionally disable trsm diagonal pre-inversion.
Details:
- Implemented a configure-time option, --disable-trsm-preinversion, that
  optionally disables the pre-inversion of diagonal elements of the
  triangular matrix in the trsm operation and instead uses division
  instructions within the gemmtrsm microkernels. Pre-inversion is
  enabled by default. When it is disabled, performance may suffer
  slightly, but numerical robustness should improve for certain
  pathological cases involving denormal (subnormal) numbers that would
  otherwise result in overflow in the pre-inverted value. Thanks to
  Bhaskar Nallani for reporting this issue via #461.
- Added preprocessor macro guards to bli_trsm_cntl.c as well as the
  gemmtrsm microkernels for 'haswell' and 'penryn' kernel sets pursuant
  to the aforementioned feature.
- Added macros to frame/include/bli_x86_asm_macros.h related to division
  instructions.
2020-12-04 16:08:15 -06:00

567 lines
16 KiB
C

/*
BLIS
An object-based framework for developing high-performance BLAS-like
libraries.
Copyright (C) 2014, The University of Texas at Austin
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name(s) of the copyright holder(s) nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "blis.h"
#define BLIS_ASM_SYNTAX_ATT
#include "bli_x86_asm_macros.h"
#if 0
void bli_sgemmtrsm_l_penryn_asm_8x4
(
dim_t k0,
float* restrict alpha,
float* restrict a10,
float* restrict a11,
float* restrict b01,
float* restrict b11,
float* restrict c11, inc_t rs_c0, inc_t cs_c0,
auxinfo_t* restrict data,
cntx_t* restrict cntx
)
{
}
#endif
void bli_dgemmtrsm_l_penryn_asm_4x4
(
dim_t k0,
double* restrict alpha,
double* restrict a10,
double* restrict a11,
double* restrict b01,
double* restrict b11,
double* restrict c11, inc_t rs_c0, inc_t cs_c0,
auxinfo_t* restrict data,
cntx_t* restrict cntx
)
{
void* b_next = bli_auxinfo_next_b( data );
// Typecast local copies of integers in case dim_t and inc_t are a
// different size than is expected by load instructions.
uint64_t k_iter = k0 / 4;
uint64_t k_left = k0 % 4;
uint64_t rs_c = rs_c0;
uint64_t cs_c = cs_c0;
begin_asm()
mov(var(a10), rax) // load address of a10.
mov(var(b01), rbx) // load address of b01.
//mov(var(b_next), r9) // load address of b_next.
sub(imm(0-8*16), rax) // increment pointers to allow byte
sub(imm(0-8*16), rbx) // offsets in the unrolled iterations.
movaps(mem(rax, -8*16), xmm0) // initialize loop by pre-loading elements
movaps(mem(rax, -7*16), xmm1) // of a and b.
movaps(mem(rbx, -8*16), xmm2)
//mov(var(c11), rcx) // load address of c11
//mov(var(rs_c), rdi) // load cs_c
//lea(mem(, rdi, 8), rdi) // cs_c *= sizeof(double)
//lea(mem(rcx, rdi, 2), rdx) // load address of c + 2*cs_c;
//prefetch(2, mem(r9, 0*8)) // prefetch b_next
xorpd(xmm3, xmm3)
xorpd(xmm4, xmm4)
xorpd(xmm5, xmm5)
xorpd(xmm6, xmm6)
//prefetch(2, mem(rcx, 3*8)) // prefetch c + 0*cs_c
xorpd(xmm8, xmm8)
movaps(xmm8, xmm9)
//prefetch(2, mem(rcx, rdi, 1, 3*8)) // prefetch c + 1*cs_c
movaps(xmm8, xmm10)
movaps(xmm8, xmm11)
//prefetch(2, mem(rdx, 3*8)) // prefetch c + 2*cs_c
movaps(xmm8, xmm12)
movaps(xmm8, xmm13)
//prefetch(2, mem(rdx, rdi, 1, 3*8)) // prefetch c + 3*cs_c
movaps(xmm8, xmm14)
movaps(xmm8, xmm15)
mov(var(k_iter), rsi) // i = k_iter;
test(rsi, rsi) // check i via logical AND.
je(.CONSIDERKLEFT) // if i == 0, jump to code that
// contains the k_left loop.
label(.LOOPKITER) // MAIN LOOP
//prefetch(0, mem(rax, 1264))
prefetch(0, mem(rax, (4*35+1)*8))
addpd(xmm3, xmm11) // iteration 0
movaps(mem(rbx, -7*16), xmm3)
addpd(xmm4, xmm15)
movaps(xmm2, xmm4)
pshufd(imm(0x4e), xmm2, xmm7)
mulpd(xmm0, xmm2)
mulpd(xmm1, xmm4)
addpd(xmm5, xmm10)
addpd(xmm6, xmm14)
movaps(xmm7, xmm6)
mulpd(xmm0, xmm7)
mulpd(xmm1, xmm6)
addpd(xmm2, xmm9)
movaps(mem(rbx, -6*16), xmm2)
addpd(xmm4, xmm13)
movaps(xmm3, xmm4)
pshufd(imm(0x4e), xmm3, xmm5)
mulpd(xmm0, xmm3)
mulpd(xmm1, xmm4)
addpd(xmm7, xmm8)
addpd(xmm6, xmm12)
movaps(xmm5, xmm6)
mulpd(xmm0, xmm5)
movaps(mem(rax, -6*16), xmm0)
mulpd(xmm1, xmm6)
movaps(mem(rax, -5*16), xmm1)
addpd(xmm3, xmm11) // iteration 1
movaps(mem(rbx, -5*16), xmm3)
addpd(xmm4, xmm15)
movaps(xmm2, xmm4)
pshufd(imm(0x4e), xmm2, xmm7)
mulpd(xmm0, xmm2)
mulpd(xmm1, xmm4)
addpd(xmm5, xmm10)
addpd(xmm6, xmm14)
movaps(xmm7, xmm6)
mulpd(xmm0, xmm7)
mulpd(xmm1, xmm6)
addpd(xmm2, xmm9)
movaps(mem(rbx, -4*16), xmm2)
addpd(xmm4, xmm13)
movaps(xmm3, xmm4)
pshufd(imm(0x4e), xmm3, xmm5)
mulpd(xmm0, xmm3)
mulpd(xmm1, xmm4)
addpd(xmm7, xmm8)
addpd(xmm6, xmm12)
movaps(xmm5, xmm6)
mulpd(xmm0, xmm5)
movaps(mem(rax, -4*16), xmm0)
mulpd(xmm1, xmm6)
movaps(mem(rax, -3*16), xmm1)
//prefetch(0, mem(rax, 1328))
prefetch(0, mem(rax, (4*37+1)*8))
addpd(xmm3, xmm11) // iteration 2
movaps(mem(rbx, -3*16), xmm3)
addpd(xmm4, xmm15)
movaps(xmm2, xmm4)
pshufd(imm(0x4e), xmm2, xmm7)
mulpd(xmm0, xmm2)
mulpd(xmm1, xmm4)
addpd(xmm5, xmm10)
addpd(xmm6, xmm14)
movaps(xmm7, xmm6)
mulpd(xmm0, xmm7)
mulpd(xmm1, xmm6)
addpd(xmm2, xmm9)
movaps(mem(rbx, -2*16), xmm2)
addpd(xmm4, xmm13)
movaps(xmm3, xmm4)
pshufd(imm(0x4e), xmm3, xmm5)
mulpd(xmm0, xmm3)
mulpd(xmm1, xmm4)
addpd(xmm7, xmm8)
addpd(xmm6, xmm12)
movaps(xmm5, xmm6)
mulpd(xmm0, xmm5)
movaps(mem(rax, -2*16), xmm0)
mulpd(xmm1, xmm6)
movaps(mem(rax, -1*16), xmm1)
addpd(xmm3, xmm11) // iteration 3
movaps(mem(rbx, -1*16), xmm3)
addpd(xmm4, xmm15)
movaps(xmm2, xmm4)
pshufd(imm(0x4e), xmm2, xmm7)
mulpd(xmm0, xmm2)
mulpd(xmm1, xmm4)
sub(imm(0-4*4*8), rax) // a += 4*4 (unroll x mr)
addpd(xmm5, xmm10)
addpd(xmm6, xmm14)
movaps(xmm7, xmm6)
mulpd(xmm0, xmm7)
mulpd(xmm1, xmm6)
//sub(imm(-4*4*8), r9) // b_next += 4*4 (unroll x nr)
addpd(xmm2, xmm9)
movaps(mem(rbx, 0*16), xmm2)
addpd(xmm4, xmm13)
movaps(xmm3, xmm4)
pshufd(imm(0x4e), xmm3, xmm5)
mulpd(xmm0, xmm3)
mulpd(xmm1, xmm4)
sub(imm(0-4*4*8), rbx) // b += 4*4 (unroll x nr)
addpd(xmm7, xmm8)
addpd(xmm6, xmm12)
movaps(xmm5, xmm6)
mulpd(xmm0, xmm5)
movaps(mem(rax, -8*16), xmm0)
mulpd(xmm1, xmm6)
movaps(mem(rax, -7*16), xmm1)
//prefetch(2, mem(r9, 0*8)) // prefetch b_next[0]
//prefetch(2, mem(r9, 8*8)) // prefetch b_next[8]
dec(rsi) // i -= 1;
jne(.LOOPKITER) // iterate again if i != 0.
label(.CONSIDERKLEFT)
mov(var(k_left), rsi) // i = k_left;
test(rsi, rsi) // check i via logical AND.
je(.POSTACCUM) // if i == 0, we're done; jump to end.
// else, we prepare to enter k_left loop.
label(.LOOPKLEFT) // EDGE LOOP
addpd(xmm3, xmm11) // iteration 0
movaps(mem(rbx, -7*16), xmm3)
addpd(xmm4, xmm15)
movaps(xmm2, xmm4)
pshufd(imm(0x4e), xmm2, xmm7)
mulpd(xmm0, xmm2)
mulpd(xmm1, xmm4)
addpd(xmm5, xmm10)
addpd(xmm6, xmm14)
movaps(xmm7, xmm6)
mulpd(xmm0, xmm7)
mulpd(xmm1, xmm6)
addpd(xmm2, xmm9)
movaps(mem(rbx, -6*16), xmm2)
addpd(xmm4, xmm13)
movaps(xmm3, xmm4)
pshufd(imm(0x4e), xmm3, xmm5)
mulpd(xmm0, xmm3)
mulpd(xmm1, xmm4)
addpd(xmm7, xmm8)
addpd(xmm6, xmm12)
movaps(xmm5, xmm6)
mulpd(xmm0, xmm5)
movaps(mem(rax, -6*16), xmm0)
mulpd(xmm1, xmm6)
movaps(mem(rax, -5*16), xmm1)
sub(imm(0-4*1*8), rax) // a += 4 (1 x mr)
sub(imm(0-4*1*8), rbx) // b += 4 (1 x nr)
dec(rsi) // i -= 1;
jne(.LOOPKLEFT) // iterate again if i != 0.
label(.POSTACCUM)
addpd(xmm3, xmm11)
addpd(xmm4, xmm15)
addpd(xmm5, xmm10)
addpd(xmm6, xmm14)
mov(var(b11), rbx) // load address of b11.
// xmm8: xmm9: xmm10: xmm11:
// ( ab01 ( ab00 ( ab03 ( ab02
// ab10 ) ab11 ) ab12 ) ab13 )
//
// xmm12: xmm13: xmm14: xmm15:
// ( ab21 ( ab20 ( ab23 ( ab22
// ab30 ) ab31 ) ab32 ) ab33 )
movaps(xmm9, xmm0)
movaps(xmm8, xmm1)
unpcklpd(xmm8, xmm0)
unpckhpd(xmm9, xmm1)
movaps(xmm11, xmm4)
movaps(xmm10, xmm5)
unpcklpd(xmm10, xmm4)
unpckhpd(xmm11, xmm5)
movaps(xmm13, xmm2)
movaps(xmm12, xmm3)
unpcklpd(xmm12, xmm2)
unpckhpd(xmm13, xmm3)
movaps(xmm15, xmm6)
movaps(xmm14, xmm7)
unpcklpd(xmm14, xmm6)
unpckhpd(xmm15, xmm7)
// xmm0: ( ab00 ab01 ) xmm4: ( ab02 ab03 )
// xmm1: ( ab10 ab11 ) xmm5: ( ab12 ab13 )
// xmm2: ( ab20 ab21 ) xmm6: ( ab22 ab23 )
// xmm3: ( ab30 ab31 ) xmm7: ( ab32 ab33 )
mov(var(alpha), rax) // load address of alpha
movddup(mem(rax), xmm15) // load alpha and duplicate
movaps(mem(rbx, 0*16), xmm8)
movaps(mem(rbx, 1*16), xmm12)
mulpd(xmm15, xmm8) // xmm8 = alpha * ( beta00 beta01 )
mulpd(xmm15, xmm12) // xmm12 = alpha * ( beta02 beta03 )
movaps(mem(rbx, 2*16), xmm9)
movaps(mem(rbx, 3*16), xmm13)
mulpd(xmm15, xmm9) // xmm9 = alpha * ( beta10 beta11 )
mulpd(xmm15, xmm13) // xmm13 = alpha * ( beta12 beta13 )
movaps(mem(rbx, 4*16), xmm10)
movaps(mem(rbx, 5*16), xmm14)
mulpd(xmm15, xmm10) // xmm10 = alpha * ( beta20 beta21 )
mulpd(xmm15, xmm14) // xmm14 = alpha * ( beta22 beta23 )
movaps(mem(rbx, 6*16), xmm11)
mulpd(xmm15, xmm11) // xmm11 = alpha * ( beta30 beta31 )
mulpd(mem(rbx, 7*16), xmm15) // xmm15 = alpha * ( beta32 beta33 )
// (Now scaled by alpha:)
// xmm8: ( beta00 beta01 ) xmm12: ( beta02 beta03 )
// xmm9: ( beta10 beta11 ) xmm13: ( beta12 beta13 )
// xmm10: ( beta20 beta21 ) xmm14: ( beta22 beta23 )
// xmm11: ( beta30 beta31 ) xmm15: ( beta32 beta33 )
subpd(xmm0, xmm8) // xmm8 -= xmm0
subpd(xmm1, xmm9) // xmm9 -= xmm1
subpd(xmm2, xmm10) // xmm10 -= xmm2
subpd(xmm3, xmm11) // xmm11 -= xmm3
subpd(xmm4, xmm12) // xmm12 -= xmm4
subpd(xmm5, xmm13) // xmm13 -= xmm5
subpd(xmm6, xmm14) // xmm14 -= xmm6
subpd(xmm7, xmm15) // xmm15 -= xmm7
label(.TRSM)
mov(var(a11), rax) // load address of a11
mov(var(c11), rcx) // load address of c11
mov(var(rs_c), rsi) // load rs_c
mov(var(cs_c), rdi) // load cs_c
sal(imm(3), rsi) // rs_c *= sizeof( double )
sal(imm(3), rdi) // cs_c *= sizeof( double )
lea(mem(rcx, rdi, 2), rdx) // c11_2 = c11 + 2*cs_c
// iteration 0
movddup(mem(0+0*4)*8(rax), xmm0) // load xmm0 = (1/alpha00)
#ifdef BLIS_ENABLE_TRSM_PREINVERSION
mulpd(xmm0, xmm8) // xmm8 *= (1/alpha00);
mulpd(xmm0, xmm12) // xmm12 *= (1/alpha00);
#else
divpd(xmm0, xmm8) // xmm8 /= alpha00;
divpd(xmm0, xmm12) // xmm12 /= alpha00;
#endif
movaps(xmm8, mem(rbx, 0*16)) // store ( beta00 beta01 ) = xmm8
movaps(xmm12, mem(rbx, 1*16)) // store ( beta02 beta03 ) = xmm12
movlpd(xmm8, mem(rcx)) // store ( gamma00 ) = xmm8[0]
movhpd(xmm8, mem(rcx, rdi, 1)) // store ( gamma01 ) = xmm8[1]
movlpd(xmm12, mem(rdx)) // store ( gamma02 ) = xmm12[0]
movhpd(xmm12, mem(rdx, rdi, 1)) // store ( gamma03 ) = xmm12[1]
add(rsi, rcx) // c11 += rs_c
add(rsi, rdx) // c11_2 += rs_c
// iteration 1
movddup(mem(1+0*4)*8(rax), xmm0) // load xmm0 = alpha10
movddup(mem(1+1*4)*8(rax), xmm1) // load xmm1 = (1/alpha11)
movaps(xmm0, xmm4) // xmm4 = xmm0
mulpd(xmm8, xmm0) // xmm0 = alpha10 * ( beta00 beta01 )
mulpd(xmm12, xmm4) // xmm4 = alpha10 * ( beta02 beta03 )
subpd(xmm0, xmm9) // xmm9 -= xmm0
subpd(xmm4, xmm13) // xmm13 -= xmm4
#ifdef BLIS_ENABLE_TRSM_PREINVERSION
mulpd(xmm1, xmm9) // xmm9 *= (1/alpha11);
mulpd(xmm1, xmm13) // xmm13 *= (1/alpha11);
#else
divpd(xmm1, xmm9) // xmm9 /= alpha11;
divpd(xmm1, xmm13) // xmm13 /= alpha11;
#endif
movaps(xmm9, mem(rbx, 2*16)) // store ( beta10 beta11 ) = xmm9
movaps(xmm13, mem(rbx, 3*16)) // store ( beta12 beta13 ) = xmm13
movlpd(xmm9, mem(rcx)) // store ( gamma10 ) = xmm9[0]
movhpd(xmm9, mem(rcx, rdi, 1)) // store ( gamma11 ) = xmm9[1]
movlpd(xmm13, mem(rdx)) // store ( gamma12 ) = xmm13[0]
movhpd(xmm13, mem(rdx, rdi, 1)) // store ( gamma13 ) = xmm13[1]
add(rsi, rcx) // c11 += rs_c
add(rsi, rdx) // c11_2 += rs_c
// iteration 2
movddup(mem(2+0*4)*8(rax), xmm0) // load xmm0 = alpha20
movddup(mem(2+1*4)*8(rax), xmm1) // load xmm1 = alpha21
movddup(mem(2+2*4)*8(rax), xmm2) // load xmm2 = (1/alpha22)
movaps(xmm0, xmm4) // xmm4 = xmm0
movaps(xmm1, xmm5) // xmm5 = xmm1
mulpd(xmm8, xmm0) // xmm0 = alpha20 * ( beta00 beta01 )
mulpd(xmm12, xmm4) // xmm4 = alpha20 * ( beta02 beta03 )
mulpd(xmm9, xmm1) // xmm1 = alpha21 * ( beta10 beta11 )
mulpd(xmm13, xmm5) // xmm5 = alpha21 * ( beta12 beta13 )
addpd(xmm1, xmm0) // xmm0 += xmm1;
addpd(xmm5, xmm4) // xmm4 += xmm5;
subpd(xmm0, xmm10) // xmm10 -= xmm0
subpd(xmm4, xmm14) // xmm14 -= xmm4
#ifdef BLIS_ENABLE_TRSM_PREINVERSION
mulpd(xmm2, xmm10) // xmm10 *= (1/alpha22);
mulpd(xmm2, xmm14) // xmm14 *= (1/alpha22);
#else
divpd(xmm2, xmm10) // xmm10 /= alpha22;
divpd(xmm2, xmm14) // xmm14 /= alpha22;
#endif
movaps(xmm10, mem(rbx, 4*16)) // store ( beta20 beta21 ) = xmm10
movaps(xmm14, mem(rbx, 5*16)) // store ( beta22 beta23 ) = xmm14
movlpd(xmm10, mem(rcx)) // store ( gamma20 ) = xmm10[0]
movhpd(xmm10, mem(rcx, rdi, 1)) // store ( gamma21 ) = xmm10[1]
movlpd(xmm14, mem(rdx)) // store ( gamma22 ) = xmm14[0]
movhpd(xmm14, mem(rdx, rdi, 1)) // store ( gamma23 ) = xmm14[1]
add(rsi, rcx) // c11 += rs_c
add(rsi, rdx) // c11_2 += rs_c
// iteration 3
movddup(mem(3+0*4)*8(rax), xmm0) // load xmm0 = alpha30
movddup(mem(3+1*4)*8(rax), xmm1) // load xmm1 = alpha31
movddup(mem(3+2*4)*8(rax), xmm2) // load xmm2 = alpha32
movddup(mem(3+3*4)*8(rax), xmm3) // load xmm3 = (1/alpha33)
movaps(xmm0, xmm4) // xmm4 = xmm0
movaps(xmm1, xmm5) // xmm5 = xmm1
movaps(xmm2, xmm6) // xmm6 = xmm2
mulpd(xmm8, xmm0) // xmm0 = alpha30 * ( beta00 beta01 )
mulpd(xmm12, xmm4) // xmm4 = alpha30 * ( beta02 beta03 )
mulpd(xmm9, xmm1) // xmm1 = alpha31 * ( beta10 beta11 )
mulpd(xmm13, xmm5) // xmm5 = alpha31 * ( beta12 beta13 )
mulpd(xmm10, xmm2) // xmm2 = alpha32 * ( beta20 beta21 )
mulpd(xmm14, xmm6) // xmm6 = alpha32 * ( beta22 beta23 )
addpd(xmm1, xmm0) // xmm0 += xmm1;
addpd(xmm5, xmm4) // xmm4 += xmm5;
addpd(xmm2, xmm0) // xmm0 += xmm2;
addpd(xmm6, xmm4) // xmm4 += xmm6;
subpd(xmm0, xmm11) // xmm11 -= xmm0
subpd(xmm4, xmm15) // xmm15 -= xmm4
#ifdef BLIS_ENABLE_TRSM_PREINVERSION
mulpd(xmm3, xmm11) // xmm11 *= (1/alpha33);
mulpd(xmm3, xmm15) // xmm15 *= (1/alpha33);
#else
divpd(xmm3, xmm11) // xmm11 /= alpha33;
divpd(xmm3, xmm15) // xmm15 /= alpha33;
#endif
movaps(xmm11, mem(rbx, 6*16)) // store ( beta30 beta31 ) = xmm11
movaps(xmm15, mem(rbx, 7*16)) // store ( beta32 beta33 ) = xmm15
movlpd(xmm11, mem(rcx)) // store ( gamma30 ) = xmm11[0]
movhpd(xmm11, mem(rcx, rdi, 1)) // store ( gamma31 ) = xmm11[1]
movlpd(xmm15, mem(rdx)) // store ( gamma32 ) = xmm15[0]
movhpd(xmm15, mem(rdx, rdi, 1)) // store ( gamma33 ) = xmm15[1]
end_asm(
: // output operands (none)
: // input operands
[k_iter] "m" (k_iter), // 0
[k_left] "m" (k_left), // 1
[a10] "m" (a10), // 2
[a11] "m" (a11), // 3
[b01] "m" (b01), // 4
[b11] "m" (b11), // 5
[c11] "m" (c11), // 6
[rs_c] "m" (rs_c), // 7
[cs_c] "m" (cs_c), // 8
[alpha] "m" (alpha), // 9
[b_next] "m" (b_next) // 10
: // register clobber list
"rax", "rbx", "rcx", "rdx", "rsi", "rdi", //"r8", "r9", "r10",
"xmm0", "xmm1", "xmm2", "xmm3",
"xmm4", "xmm5", "xmm6", "xmm7",
"xmm8", "xmm9", "xmm10", "xmm11",
"xmm12", "xmm13", "xmm14", "xmm15",
"memory"
)
}