15-745 Spring '22
Class Handouts

Lecture Notes

• Lecture 1: Overview of Optimizations (Jan. 18) video, 4up, 1up
• Lecture 2: Local Optimizations (Jan. 19) video, 4up, 1up
• Lecture 3: The LLVM Compiler: Overview (Jan. 20) 1up, 4up
• Lecture 4: Introduction to Data Flow Analysis (Jan. 25) video, 4up, 1up
• Lecture 5: Foundations of Data Flow Analysis (Jan. 26) video, 4up, 1up
• Lecture 6: The LLVM Compiler: Further Details (Jan. 27) 1up, 4up
• Lecture 7: Global Common Subexpression Elimination, Constant Folding (Feb. 1) video, 4up, 1up
• Lecture 8: Intro to Static Single Assignment (Feb. 2) video, 4up, 1up
• Lecture 9: SSA-style Optimizations (Feb. 3) video, 4up, 1up
• Lecture 10: Loop Invariant Code Motion (Feb. 8) video, 4up, 1up
• Lecture 11: Induction Variables and Strength Reduction (Feb. 9) (Bonus material) video, 4up, 1up
• Lecture 12: Partial Redundancy Elimination (Feb. 9-10) video, 4up, 1up
• Lecture 13: Lazy Code Motion (Feb. 15) video, 4up, 1up
• Lecture 14: Region-Based Analysis (Feb. 16) video, 4up, 1up
• Lecture 15: Pointer Analysis (Feb. 17) video, 4up, 1up
• Lecture 16: Dynamic Code Optimization (Feb. 22) video, 4up, 1up
• Lecture 17: Register Allocation: Coloring and Spilling (Feb. 23) video, 4up, 1up
• Lecture 18: Optimizing Domain-Specific Languages (DSLs) (Feb. 24) video, 4up, 1up
• Lecture 23: List Scheduling (Mar. 16) video, 4up, 1up
• Lecture 24: Global Scheduling and Software Pipelining (Mar. 17) video, 4up, 1up
• Lecture 25: Memory Hierarchy Optimizations (Mar. 22) video, 4up, 1up
• Lectures 26-27: Data Prefetching (Mar. 23 and 24)
  • Videos:
    • prefetching for arrays (Mar. 31),
    • prefetching for recursive data structures (Apr. 1),
  • Slides: 4up, 1up
• Lecture 28: Array Dependence Analysis (Mar. 29) video, 4up, 1up
• Lecture 29: Thread-Level Speculation (Mar. 30) (Bonus material) video, 4up, 1up

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