Intel 64 and IA-32 Architectures Software Developers Manual Volume 2B, Instruction Set Reference, N-Z

Vol. 2B 4-209
INSTRUCTION SET REFERENCE, N-Z
PUNPCKLBW instruction with 128-bit operands:
DEST[7:0] ← DEST[7:0];
DEST[15:8] ← SRC[7:0];
DEST[23:16] ← DEST[15:8];
DEST[31:24] ← SRC[15:8];
DEST[39:32] ← DEST[23:16];
DEST[47:40] ← SRC[23:16];
DEST[55:48] ← DEST[31:24];
DEST[63:56] ← SRC[31:24];
DEST[71:64] ← DEST[39:32];
DEST[79:72] ← SRC[39:32];
DEST[87:80] ← DEST[47:40];
DEST[95:88] ← SRC[47:40];
DEST[103:96] ← DEST[55:48];
DEST[111:104] ← SRC[55:48];
DEST[119:112] ← DEST[63:56];
DEST[127:120] ← SRC[63:56];
PUNPCKLWD instruction with 128-bit operands:
DEST[15:0] ← DEST[15:0];
DEST[31:16] ← SRC[15:0];
DEST[47:32] ← DEST[31:16];
DEST[63:48] ← SRC[31:16];
DEST[79:64] ← DEST[47:32];
DEST[95:80] ← SRC[47:32];
DEST[111:96] ← DEST[63:48];
DEST[127:112] ← SRC[63:48];
PUNPCKLDQ instruction with 128-bit operands:
DEST[31:0] ← DEST[31:0];
DEST[63:32] ← SRC[31:0];
DEST[95:64] ← DEST[63:32];
DEST[127:96] ← SRC[63:32];
PUNPCKLQDQ
DEST[63:0] ← DEST[63:0];
DEST[127:64] ← SRC[63:0];
Intel C/C++ Compiler Intrinsic Equivalents
PUNPCKLBW __m64 _mm_unpacklo_pi8 (__m64 m1, __m64 m2)
PUNPCKLBW __m128i _mm_unpacklo_epi8 (__m128i m1, __m128i m2)
PUNPCKLWD __m64 _mm_unpacklo_pi16 (__m64 m1, __m64 m2)
PUNPCKLWD __m128i _mm_unpacklo_epi16 (__m128i m1, __m128i m2)