// Use the type __m128d directly, without introducing a wrapper class // Use macros instead of inline functions #include #include #include #ifdef __SSE4_1__ // Intel's SSE 4.1 # include #endif #ifdef __SSE4A__ // AMD's SSE 4a # include // Intel compilers don't support SSE 4a. Here is how we can implement // these instructions in assembler instead: // inline void __attribute__((__always_inline__)) // _mm_stream_sd (double *p, __m128d x) // { // asm ("movntsd %[x],%[p]" : "=m" (*p) : [p] "m" (*p), [x] "x" (x)); // } #endif #ifdef __FMA4__ # include #endif #ifdef __SSE4_1__ # define vec8_architecture_SSE4_1 "+SSE4.1" #else # define vec8_architecture_SSE4_1 "" #endif #ifdef __SSE4A__ # define vec8_architecture_SSE4a "+SSE4A" #else # define vec8_architecture_SSE4a "" #endif #ifdef __FMA4__ # define vec8_architecture_FMA4 "+FMA4" #else # define vec8_architecture_FMA4 "" #endif #define vec8_architecture "SSE2" vec8_architecture_SSE4_1 vec8_architecture_SSE4a vec8_architecture_FMA4 " (64-bit precision)" // Vector type corresponding to CCTK_REAL #define CCTK_REAL8_VEC __m128d // Number of vector elements in a CCTK_REAL_VEC #define CCTK_REAL8_VEC_SIZE 2 // Integer and boolean types corresponding to this real type #define CCTK_INTEGER8 CCTK_REAL8 #define CCTK_BOOLEAN8 CCTK_REAL8 #define CCTK_INTEGER8_VEC CCTK_REAL8_VEC #define CCTK_BOOLEAN8_VEC CCTK_REAL8_VEC union k8const_t { long long i[2]; double f[2]; __m128i vi; __m128d vf; }; #define K8_IMIN ((long long)0x8000000000000000ULL) // Create vectors, extract vector elements #define vec8_set1(a) (_mm_set1_pd(a)) #define vec8_set(a,b) (_mm_set_pd(b,a)) // note reversed arguments // original order is 01 #define vec8_swap10(x_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const x=x__; \ _mm_shuffle_pd(x,x, _MM_SHUFFLE2(0,1)); \ }) #define vec8_elt0(x) (((CCTK_REAL8 const*)&(x))[0]) #define vec8_elt1(x) (((CCTK_REAL8 const*)&(x))[1]) #define vec8_elt(x,d) (((CCTK_REAL8 const*)&(x))[d]) // Load and store vectors // Load a vector from memory (aligned and unaligned); this loads from // a reference to a scalar #define vec8_load(p) (_mm_load_pd(&(p))) #define vec8_loadu(p) (_mm_loadu_pd(&(p))) #if ! VECTORISE_ALWAYS_USE_ALIGNED_LOADS # define vec8_load_off1(p) vec_loadu(p) #else # define vec8_load_off1(p_) \ ({ \ CCTK_REAL8 const& p__=(p_); \ CCTK_REAL8 const& p=p__; \ _mm_shuffle_pd(vec8_load((&p)[-1]), \ vec8_load((&p)[+1]), _MM_SHUFFLE2(0,1)); \ }) #endif // Load a vector from memory that may or may not be aligned, as // decided by the offset off and the vector size #if VECTORISE_ALWAYS_USE_UNALIGNED_LOADS // Implementation: Always use unaligned load # define vec8_loadu_maybe(off,p) vec8_loadu(p) # define vec8_loadu_maybe3(off1,off2,off3,p) vec8_loadu(p) #else # define vec8_loadu_maybe(off,p_) \ ({ \ CCTK_REAL8 const& p__=(p_); \ CCTK_REAL8 const& p=p__; \ (off) % CCTK_REAL8_VEC_SIZE == 0 ? \ vec8_load(p) : \ vec8_load_off1(p); \ }) # if VECTORISE_ALIGNED_ARRAYS // Assume all array x sizes are multiples of the vector size # define vec8_loadu_maybe3(off1,off2,off3,p) \ vec8_loadu_maybe(off1,p) # else # define vec8_loadu_maybe3(off1,off2,off3,p_) \ ({ \ CCTK_REAL8 const& p__=(p_); \ CCTK_REAL8 const& p=p__; \ ((off2) % CCTK_REAL8_VEC_SIZE != 0 or \ (off3) % CCTK_REAL8_VEC_SIZE != 0) ? \ vec8_loadu(p) : \ vec8_loadu_maybe(off1,p); \ }) # endif #endif // Store a vector to memory (aligned and non-temporal); this stores to // a reference to a scalar #define vec8_store(p,x) (_mm_store_pd(&(p),x)) #define vec8_storeu(p,x) (_mm_storeu_pd(&(p),x)) #if ! VECTORISE_STREAMING_STORES # define vec8_store_nta(p,x) vec8_store(p,x) #else # define vec8_store_nta(p,x) (_mm_stream_pd(&(p),x)) #endif // Store a partial vector (aligned and non-temporal) #define vec8_store_partial_prepare(i,imin,imax) \ bool const v8stp_lo = (i)>=(imin); \ bool const v8stp_hi = (i)+CCTK_REAL_VEC_SIZE-1<(imax) #if VECTORISE_STREAMING_STORES && defined(__SSE4A__) # define vec8_store_nta_partial(p_,x_) \ ({ \ CCTK_REAL8& p__=(p_); \ CCTK_REAL8& p=p__; \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const x=x__; \ if (CCTK_BUILTIN_EXPECT(v8stp_lo and v8stp_hi, true)) { \ vec8_store_nta(p,x); \ } else if (v8stp_lo) { \ _mm_stream_sd(&p,x); \ } else if (v8stp_hi) { \ _mm_stream_sd(&p+1, vec8_swap10(x)); \ } \ }) #else # define vec8_store_nta_partial(p_,x_) \ ({ \ CCTK_REAL8& p__=(p_); \ CCTK_REAL8& p=p__; \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const x=x__; \ if (CCTK_BUILTIN_EXPECT(v8stp_lo and v8stp_hi, true)) { \ vec8_store_nta(p,x); \ } else if (v8stp_lo) { \ _mm_storel_pd(&p,x); \ } else if (v8stp_hi) { \ _mm_storeh_pd(&p+1,x); \ } \ }) #endif // Store a lower or higher partial vector (aligned and non-temporal) #if ! VECTORISE_STREAMING_STORES # define vec8_store_nta_partial_lo(p,x,n) (_mm_storel_pd(&(p),x)) # define vec8_store_nta_partial_hi(p,x,n) (_mm_storeh_pd(&(p)+1,x)) #else # if defined(__SSE4A__) # define vec8_store_nta_partial_lo(p,x,n) (_mm_stream_sd(&(p),x)) # define vec8_store_nta_partial_hi(p,x,n) \ (_mm_stream_sd(&(p)+1, vec8_swap10(x))) # else // TODO: use clflush once a whole cache line has been written (cache // lines are usually larger than the CPU vector size) # define vec8_store_nta_partial_lo(p_,x,n) \ ({ \ CCTK_REAL8& p__=(p_); \ CCTK_REAL8& p=p__; \ _mm_storel_pd(&p,x); \ /* _mm_clflush(&p); */ \ }) # define vec8_store_nta_partial_hi(p_,x,n) \ ({ \ CCTK_REAL8& p__=(p_); \ CCTK_REAL8& p=p__; \ _mm_storeh_pd(&p+1,x); \ /* _mm_clflush(&p+1); */ \ }) # endif #endif #if 0 // This is slower; we would need a non-temporal read #define vec8_store_nta_partial_lo(p,x,n) \ vec8_store_nta(p, _mm_loadh_pd(x,&(p)+1)) #define vec8_store_nta_partial_hi(p,x,n) \ vec8_store_nta(p, _mm_loadl_pd(x,&(p))) #endif #define vec8_store_nta_partial_mid(p,x,nlo,nhi) assert(0) // Functions and operators static const k8const_t k8sign_mask = {{ K8_IMIN, K8_IMIN, }}; // Operators // #define k8inot(x) (_mm_xor_si128(k8all_mask,x)) // // #define k8iand(x,y) (_mm_and_si128(x,y)) // #define k8ior(x,y) (_mm_or_si128(x,y)) // #define k8ixor(x,y) (_mm_xor_si128(x,y)) // // #define k8ineg(x) (_mm_xor_pd(k8sign_mask,x)) // // #define k8iadd(x,y) (_mm_add_epi64(x,y)) // #define k8isub(x,y) (_mm_sub_epi64(x,y)) // // #define k8not(x) (_mm_xor_pd(k8all_mask,x)) // // #define k8and(x,y) (_mm_and_pd(x,y)) // #define k8or(x,y) (_mm_or_pd(x,y)) // #define k8xor(x,y) (_mm_xor_pd(x,y)) #define k8neg(x) (_mm_xor_pd(k8sign_mask.vf,x)) #define k8add(x,y) (_mm_add_pd(x,y)) #define k8sub(x,y) (_mm_sub_pd(x,y)) #define k8mul(x,y) (_mm_mul_pd(x,y)) #define k8div(x,y) (_mm_div_pd(x,y)) // Fused multiply-add, defined as [+-]x*y[+-]z #ifdef __FMA4__ # define k8madd(x,y,z) (_mm_macc_pd(x,y,z)) # define k8msub(x,y,z) (_mm_msub_pd(x,y,z)) # define k8nmadd(x,y,z) (_mm_nmsub_pd(x,y,z)) # define k8nmsub(x,y,z) (_mm_nmacc_pd(x,y,z)) #else # define k8madd(x,y,z) (k8add(k8mul(x,y),z)) # define k8msub(x,y,z) (k8sub(k8mul(x,y),z)) # define k8nmadd(x,y,z) (k8sub(k8neg(z),k8mul(x,y))) # define k8nmsub(x,y,z) (k8sub(z,k8mul(x,y))) #endif // Cheap functions #define k8copysign(x,y) \ (_mm_or_pd(_mm_andnot_pd(k8sign_mask.vf,x), \ _mm_and_pd(k8sign_mask.vf,y))) #define k8fabs(x) (_mm_andnot_pd(k8sign_mask.vf,x)) #define k8fmax(x,y) (_mm_max_pd(x,y)) #define k8fmin(x,y) (_mm_min_pd(x,y)) #define k8fnabs(x) (_mm_or_pd(k8sign_mask.vf,x)) static const k8const_t k8zero = { f: { 0.0, 0.0, }}; static const k8const_t k8one = { f: { 1.0, 1.0, }}; #define k8sgn(x_) \ ({ \ CCTK_REAL_VEC const x__=(x_); \ CCTK_REAL_VEC const x=x__; \ CCTK_REAL_VEC const iszero = _mm_cmpeq_pd(k8zero.vf, x); \ CCTK_REAL_VEC const sign = _mm_and_pd(k8sign_mask.vf, x); \ CCTK_REAL_VEC const signedone = _mm_or_pd(k8one.vf, sign); \ k8ifthen(iszero, k8zero.vf, signedone); \ }) #define k8sqrt(x) (_mm_sqrt_pd(x)) // Expensive functions #define K8REPL(f,x_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const x=x__; \ vec8_set(f(vec8_elt0(x)), \ f(vec8_elt1(x))); \ }) #define K8REPL2S(f,x_,a_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8 const a__=(a_); \ CCTK_REAL8_VEC const x=x__; \ CCTK_REAL8 const a=a__; \ vec8_set(f(vec8_elt0(x),a), \ f(vec8_elt1(x),a)); \ }) #define K8REPL2(f,x_,y_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const y__=(y_); \ CCTK_REAL8_VEC const x=x__; \ CCTK_REAL8_VEC const y=y__; \ vec8_set(f(vec8_elt0(x),vec8_elt0(y)), \ f(vec8_elt1(x),vec8_elt1(y))); \ }) #define k8acos(x) K8REPL(acos,x) #define k8acosh(x) K8REPL(acosh,x) #define k8asin(x) K8REPL(asin,x) #define k8asinh(x) K8REPL(asinh,x) #define k8atan(x) K8REPL(atan,x) #define k8atan2(x,y) K8REPL2(atan2,x,y) #define k8atanh(x) K8REPL(atanh,x) #define k8cos(x) K8REPL(cos,x) #define k8cosh(x) K8REPL(cosh,x) #define k8exp(x) K8REPL(exp,x) #define k8log(x) K8REPL(log,x) #define k8pow(x,a) K8REPL2S(pow,x,a) #define k8sin(x) K8REPL(sin,x) #define k8sinh(x) K8REPL(sinh,x) #define k8tan(x) K8REPL(tan,x) #define k8tanh(x) K8REPL(tanh,x) static const k8const_t k8lfalse_ = {{ +0LL, +0LL, }}; static const k8const_t k8ltrue_ = {{ -1LL, -1LL, }}; #define k8lfalse (k8lfalse_.vf) #define k8ltrue (k8ltrue_.vf) #define k8lnot(x) (_mm_xor_pd(k8ltrue,x)) #define k8land(x,y) (_mm_and_pd(x,y)) #define k8lor(x,y) (_mm_or_pd(x,y)) #define k8lxor(x,y) (_mm_xor_pd(x,y)) #ifdef __SSE4_1__ # define k8ifthen(x,y,z) (_mm_blendv_pd(z,y,x)) #elif 0 // This is slow (but this is what Intel/PGI produce by themselves) # define k8ifthen(x_,y_,z_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const y__=(y_); \ CCTK_REAL8_VEC const z__=(z_); \ CCTK_REAL8_VEC const x=x__; \ CCTK_REAL8_VEC const y=y__; \ CCTK_REAL8_VEC const z=z__; \ int const m = _mm_movemask_pd(x); \ CCTK_REAL8_VEC r; \ switch (m) { \ case 0: r = y; break; \ case 1: r = _mm_move_sd(y,z); break; \ case 2: r = _mm_move_sd(z,y); break; \ case 3: r = z; break; \ } \ r; \ }) #elif 0 # ifdef __cplusplus # define k8signbit(x) ({ using namespace std; signbit(x); }) # else # define k8signbit(x) (signbit(x)) # endif # define k8ifthen(x_,y_,z_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const y__=(y_); \ CCTK_REAL8_VEC const z__=(z_); \ CCTK_REAL8_VEC const x=x__; \ CCTK_REAL8_VEC const y=y__; \ CCTK_REAL8_VEC const z=z__; \ vec8_set(k8signbit(vec8_elt0(x)) ? vec8_elt0(y) : vec8_elt0(z), \ k8signbit(vec8_elt1(x)) ? vec8_elt1(y) : vec8_elt1(z)); \ }) #elif 0 // We don't need to shift -- the condition (mask) will be either all // zeros or all ones static const k8const_t k8ione = {{ 0x1ULL, 0x1ULL, }}; # define k8ifthen(x_,y_,z_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const y__=(y_); \ CCTK_REAL8_VEC const z__=(z_); \ CCTK_REAL8_VEC const x=x__; \ CCTK_REAL8_VEC const y=y__; \ CCTK_REAL8_VEC const z=z__; \ /* there is no _mm_srai_epi64(x, 63); we therefore calculate srli(x)-1 */ \ __m128i const x_int = *(__m128i const*)&x; \ __m128i const imask_int = \ _mm_sub_epi64(_mm_srli_epi64(x_int, 63), k8ione.vi); \ CCTK_REAL8_VEC const imask = *(CCTK_REAL8_VEC const*)&imask_int; \ /* (z & ~mask) | (y & mask) where imask = ~mask */ \ _mm_or_pd(_mm_and_pd(imask, z), _mm_andnot_pd(imask, y)); \ }) #else # define k8ifthen(x_,y_,z_) \ ({ \ CCTK_REAL8_VEC const x__=(x_); \ CCTK_REAL8_VEC const y__=(y_); \ CCTK_REAL8_VEC const z__=(z_); \ CCTK_REAL8_VEC const x=x__; \ CCTK_REAL8_VEC const y=y__; \ CCTK_REAL8_VEC const z=z__; \ /* (z & ~mask) | (y & mask) where imask = ~mask */ \ _mm_or_pd(_mm_and_pd(x, y), _mm_andnot_pd(x, z)); \ }) #endif #define k8cmpeq(x,y) (_mm_cmpeq_pd(x,y)) #define k8cmpne(x,y) (_mm_cmpneq_pd(x,y)) #define k8cmpgt(x,y) (_mm_cmpgt_pd(x,y)) #define k8cmpge(x,y) (_mm_cmpge_pd(x,y)) #define k8cmplt(x,y) (_mm_cmplt_pd(x,y)) #define k8cmple(x,y) (_mm_cmple_pd(x,y))