Intel® oneAPI DPC++/C++ Compiler Developer Guide and Reference

Development Reference Guides

Contents

Unpack Operators

  • Interleave the 64-bit value from the high half of
    A
     with the 64-bit value from the high half of
    B
    : 
    
I64vec2 unpack_high(I64vec2 A, I64vec2 B);
Is64vec2 unpack_high(Is64vec2 A, Is64vec2 B);
Iu64vec2 unpack_high(Iu64vec2 A, Iu64vec2 B);
R0 = A1;
R1 = B1;
    Corresponding intrinsic:
    _mm_unpackhi_epi64
  • Interleave the two 32-bit values from the high half of
    A
     with the two 32-bit values from the high half of
    B
    : 
    
I32vec4 unpack_high(I32vec4 A, I32vec4 B);
Is32vec4 unpack_high(Is32vec4 A, Is32vec4 B);
Iu32vec4 unpack_high(Iu32vec4 A, Iu32vec4 B);
R0 = A1;
R1 = B1;
R2 = A2;
R3 = B2;
    Corresponding intrinsic:
    _mm_unpackhi_epi32
  • Interleave the 32-bit value from the high half of
    A
     with the 32-bit value from the high half of
    B
    : 
    
I32vec2 unpack_high(I32vec2 A, I32vec2 B);
Is32vec2 unpack_high(Is32vec2 A, Is32vec2 B);
Iu32vec2 unpack_high(Iu32vec2 A, Iu32vec2 B);
R0 = A1;
R1 = B1;
    Corresponding intrinsic:
    _mm_unpackhi_pi32
  • Interleave the four 16-bit values from the high half of
    A
     with the two 16-bit values from the high half of
    B
    : 
    
I16vec8 unpack_high(I16vec8 A, I16vec8 B);
Is16vec8 unpack_high(Is16vec8 A, Is16vec8 B);
Iu16vec8 unpack_high(Iu16vec8 A, Iu16vec8 B);
R0 = A2;
R1 = B2;
R2 = A3;
R3 = B3;
    Corresponding intrinsic:
    _mm_unpackhi_epi16
  • Interleave the two 16-bit values from the high half of
    A
     with the two 16-bit values from the high half of
    B
    : 
    
I16vec4 unpack_high(I16vec4 A, I16vec4 B);
Is16vec4 unpack_high(Is16vec4 A, Is16vec4 B);
Iu16vec4 unpack_high(Iu16vec4 A, Iu16vec4 B);
R0 = A2;R1 = B2;
R2 = A3;R3 = B3;
    Corresponding intrinsic:
    _mm_unpackhi_pi16
  • Interleave the four 8-bit values from the high half of
    A
     with the four 8-bit values from the high half of
    B
    : 
    
I8vec8 unpack_high(I8vec8 A, I8vec8 B);
Is8vec8 unpack_high(Is8vec8 A, I8vec8 B);
Iu8vec8 unpack_high(Iu8vec8 A, I8vec8 B);
R0 = A4;
R1 = B4;
R2 = A5;
R3 = B5;
R4 = A6;
R5 = B6;
R6 = A7;
R7 = B7;
    Corresponding intrinsic:
    _mm_unpackhi_pi8
  • Interleave the sixteen 8-bit values from the high half of
    A
     with the four 8-bit values from the high half of
    B
    : 
    
I8vec16 unpack_high(I8vec16 A, I8vec16 B);
Is8vec16 unpack_high(Is8vec16 A, I8vec16 B);
Iu8vec16 unpack_high(Iu8vec16 A, I8vec16 B);
R0 = A8;
R1 = B8;
R2 = A9;
R3 = B9;
R4 = A10;
R5 = B10;
R6 = A11;
R7 = B11;
R8 = A12;
R8 = B12;
R2 = A13;
R3 = B13;
R4 = A14;
R5 = B14;
R6 = A15;
R7 = B15;
    Corresponding intrinsic:
    _mm_unpackhi_epi16
  • Interleave the 32-bit value from the low half of
    A
     with the 32-bit value from the low half of
    B
    : 
    
R0 = A0;
R1 = B0;
    Corresponding intrinsic:
    _mm_unpacklo_epi32
  • Interleave the 64-bit value from the low half of
    A
     with the 64-bit values from the low half of
    B
    : 
    
I64vec2 unpack_low(I64vec2 A, I64vec2 B);
Is64vec2 unpack_low(Is64vec2 A, Is64vec2 B);
Iu64vec2 unpack_low(Iu64vec2 A, Iu64vec2 B);
R0 = A0;
R1 = B0;
R2 = A1;
R3 = B1;
    Corresponding intrinsic:
    _mm_unpacklo_epi32
  • Interleave the two 32-bit values from the low half of
    A
     with the two 32-bit values from the low half of
    B
    : 
    
I32vec4 unpack_low(I32vec4 A, I32vec4 B);
Is32vec4 unpack_low(Is32vec4 A, Is32vec4 B);
Iu32vec4 unpack_low(Iu32vec4 A, Iu32vec4 B);
R0 = A0;
R1 = B0;
R2 = A1;
R3 = B1;
    Corresponding intrinsic:
    _mm_unpacklo_epi32
  • Interleave the 32-bit value from the low half of
    A
     with the 32-bit value from the low half of
    B
    : 
    
I32vec2 unpack_low(I32vec2 A, I32vec2 B);
Is32vec2 unpack_low(Is32vec2 A, Is32vec2 B);
Iu32vec2 unpack_low(Iu32vec2 A, Iu32vec2 B);
R0 = A0;
R1 = B0;
    Corresponding intrinsic:
    _mm_unpacklo_pi32
  • Interleave the two 16-bit values from the low half of
    A
     with the two 16-bit values from the low half of
    B
    : 
    
I16vec8 unpack_low(I16vec8 A, I16vec8 B);
Is16vec8 unpack_low(Is16vec8 A, Is16vec8 B);
Iu16vec8 unpack_low(Iu16vec8 A, Iu16vec8 B);
R0 = A0;
R1 = B0;
R2 = A1;
R3 = B1;
R4 = A2;
R5 = B2;
R6 = A3;
R7 = B3;
    Corresponding intrinsic:
    _mm_unpacklo_epi16
  • Interleave the two 16-bit values from the low half of
    A
     with the two 16-bit values from the low half of
    B
    : 
    
I16vec4 unpack_low(I16vec4 A, I16vec4 B);
Is16vec4 unpack_low(Is16vec4 A, Is16vec4 B);
Iu16vec4 unpack_low(Iu16vec4 A, Iu16vec4 B);
R0 = A0;
R1 = B0;
R2 = A1;
R3 = B1;
    Corresponding intrinsic:
    _mm_unpacklo_pi16
  • Interleave the four 8-bit values from the high low of
    A
     with the four 8-bit values from the low half of
    B
    : 
    
I8vec16 unpack_low(I8vec16 A, I8vec16 B);
Is8vec16 unpack_low(Is8vec16 A, Is8vec16 B);
Iu8vec16 unpack_low(Iu8vec16 A, Iu8vec16 B);
R0 = A0;
R1 = B0;
R2 = A1;
R3 = B1;
R4 = A2;
R5 = B2;
R6 = A3;
R7 = B3;
R8 = A4;
R9 = B4;
R10 = A5;
R11 = B5;
R12 = A6;
R13 = B6;
R14 = A7;
R15 = B7;
    Corresponding intrinsic:
    _mm_unpacklo_epi8
  • Interleave the four 8-bit values from the high low of
    A
     with the four 8-bit values from the low half of
    B
    : 
    
I8vec8 unpack_low(I8vec8 A, I8vec8 B);
Is8vec8 unpack_low(Is8vec8 A, Is8vec8 B);
Iu8vec8 unpack_low(Iu8vec8 A, Iu8vec8 B);
R0 = A0;
R1 = B0;
R2 = A1;
R3 = B1;
R4 = A2;
R5 = B2;
R6 = A3;
R7 = B3;
    Corresponding intrinsic:
    _mm_unpacklo_pi8

Product and Performance Information

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Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.