Esempi in C++ (Cpp) per _mm256_i64gather_epi32

Esempio n. 1

File: fastrange.c Progetto: lemire/Code-used-on-Daniel-Lemire-s-blog

// assume N is divisible by 4
uint32_t vectorsum(uint32_t * z, uint32_t N, uint32_t * accesses, uint32_t nmbr) {
  __m256i Nvec = _mm256_set1_epi32(N);
  __m128i sum = _mm_setzero_si128();
  for(uint32_t j = 0; j < nmbr ; j+=4) {
     __m256i fourints = _mm256_loadu_si256((const __m256i *)(accesses + j));
     __m256i four64bitsproducts =  _mm256_mul_epu32(fourints, Nvec);
     __m256i fourtop32ints = _mm256_srli_epi64(four64bitsproducts,32);
     __m128i four32ints = _mm256_i64gather_epi32 (z,fourtop32ints , 4);
     sum = _mm_add_epi32(sum, four32ints);
  }
  uint32_t buffer[4];
  _mm_storeu_si128((__m128i *)buffer,sum);
  return buffer[0] + buffer[1] + buffer[2] + buffer[3];
}

Esempio n. 2

File: avx2-builtins.c Progetto: autodesk-forks/llvm-clang

__m128i test_mm256_i64gather_epi32(int const *b, __m256i c) {
  // CHECK-LABEL: test_mm256_i64gather_epi32
  // CHECK: call <4 x i32> @llvm.x86.avx2.gather.q.d.256(<4 x i32> %{{.*}}, i8* %{{.*}}, <4 x i64> %{{.*}}, <4 x i32> %{{.*}}, i8 2)
  return _mm256_i64gather_epi32(b, c, 2);
}

Esempio n. 3

File: avx2-i64gatherd256-1.c Progetto: 0day-ci/gcc

void extern
avx2_test (void)
{
  x = _mm256_i64gather_epi32 (base, idx, 1);
}

Esempio n. 4

File: avx2-builtins.c Progetto: Bigcheese/clang

__m128i test_mm256_i64gather_epi32(int const *b, __m256i c) {
  // CHECK: @llvm.x86.avx2.gather.q.d.256
  return _mm256_i64gather_epi32(b, c, 2);
}