Intel ARCHITECTURE IA-32 User Manual download pdf (Page 17)

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Example 4-20 Clipping to an Arbitrary Signed Range [high, low].........................4-27

Example 4-21 Simplified Clipping to an Arbitrary Signed Range ......................... 4-28

Example 4-22 Clipping to an Arbitrary Unsigned Range [high, low].....................4-29

Example 4-23 Complex Multiply by a Constant .................................................... 4-32

Example 4-24 A Large Load after a Series of Small Stores (Penalty).................. 4-35

Example 4-25 Accessing Data without Delay ....................................................... 4-35

Example 4-26 A Series of Small Loads after a Large Store ................................. 4-36

Example 4-27 Eliminating Delay for a Series of Small Loads after a

Large Store.................................................................................... 4-36

Example 4-28 An Example of Video Processing with Cache Line Splits.............. 4-37

Example 4-29 Video Processing Using LDDQU to Avoid Cache Line Splits........ 4-38

Example 5-1 Pseudocode for Horizontal (xyz, AoS) Computation ....................... 5-8

Example 5-2 Pseudocode for Vertical (xxxx, yyyy, zzzz, SoA) Computation........ 5-9

Example 5-3 Swizzling Data............................................................................... 5-10

Example 5-4 Swizzling Data Using Intrinsics ..................................................... 5-12

Example 5-5 Deswizzling Single-Precision SIMD Data...................................... 5-14

Example 5-6 Deswizzling Data Using the movlhps and shuffle

Instructions .................................................................................... 5-15

Example 5-7 Deswizzling Data 64-bit Integer SIMD Data .................................. 5-16

Example 5-8 Using MMX Technology Code for Copying or Shuffling................. 5-18

Example 5-9 Horizontal Add Using movhlps/movlhps........................................ 5-19

Example 5-10 Horizontal Add Using Intrinsics with movhlps/movlhps ................. 5-21

Example 5-11 Multiplication of Two Pair of Single-precision Complex Number....5-24

Example 5-12 Division of Two Pair of Single-precision Complex Number............ 5-25

Example 5-13 Calculating Dot Products from AOS ..............................................5-26

Example 6-1 Pseudo-code for Using cflush ....................................................... 6-18

Example 6-2 Populating an Array for Circular Pointer Chasing with

Constant Stride.............................................................................. 6-21

Example 6-3 Prefetch Scheduling Distance ....................................................... 6-26

Example 6-5 Concatenation and Unrolling the Last Iteration of Inner Loop ....... 6-28

Example 6-4 Using Prefetch Concatenation....................................................... 6-28

Example 6-6 Spread Prefetch Instructions ......................................................... 6-33

Example 6-7 Data Access of a 3D Geometry Engine without Strip-mining........6-37

Example 6-8 Data Access of a 3D Geometry Engine with Strip-mining ............. 6-38

Example 6-9 Using HW Prefetch to Improve Read-Once Memory Traffic .......... 6-40

Example 6-10 Basic Algorithm of a Simple Memory Copy................................... 6-46

Example 6-11 A Memory Copy Routine Using Software Prefetch........................ 6-48

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Intel ARCHITECTURE IA-32 User Manual Page 17