SSE instruction set generation II

4. Data shuffling Instruction Set

UnpckhpsXMM, XMM/m128

The source memory and destination register are 64-bitDouble-CharacterThe result is sent to the destination register. The memory variables must be 16 bytes aligned with the memory.
High 64-bit | low 64-bit
Destination register: A0 | A1 | A2 | A3
Source memory: B0 | B1 | B2 | B3
Destination register result: B0 | A0 | B1 | A1
Example:
When xmm0 = 0x 0c517e000 44290000 46b6d000 3c4985f0
Xmm1 = 0x 045e510004240 CCCD 4a59e540 3a77b9e0,

When unpckhps xmm0 and xmm1 are executed
Xmm0 = 0x 045e51000 c517e000 4240 CCCD 44290000

UnpcklpsXMM, XMM/m128

Source memory and destination register 64-bit lowDouble-CharacterThe result is sent to the destination register. The memory variables must be 16 bytes aligned with the memory.
High 64-bit | low 64-bit
Destination register: A0 | A1 | A2 | A3
Source memory: B0 | B1 | B2 | B3
Destination register result: B2 | A2 | B3 | A3
Example:
When xmm0 = 0x 0c517e000 44290000 46b6d000 3c4985f0
Xmm1 = 0x 045e510004240 CCCD 4a59e540 3a77b9e0,

Run unpcklps xmm0, xmm1
Then xmm0 = 0x 04a59e540 46b6d000 3a77b9e0 3c4985f0

 

5. commands for converting Single-precision floating-point numbers and Integers

 Cvtpi2psXMM, mm/M64

The 64-bit two 32-Bit Signed (complement) integers in the source memory are converted into two single-precision floating-point numbers, which are placed in the destination register 64 lower, and the 64-bit height remains unchanged.

The source register is 'mm', not 'xmm'

Cvtsi2ssXMM, R32/M32

One 32-Bit Signed (complement) integer in the source memory is converted into one single-precision floating point number, which is placed into the destination register 32 lower, and the 96-bit height remains unchanged.

 

Cvtps2piMm, XMM/M64

Convert two 32-Bit Single-precision floating point numbers (64-bit) in the source memory into two 32-bit signed integers and place them in the destination register.

 

Cvtss2siR32, XMM/M32

Convert a 32-bit low 32-Bit Single-precision floating point number in the source memory into a 32-bit signed integer and place it in the destination register.