HW 1: Superoptimizer

1. Read through papers:

• Dimensions in program synthesis (Gulwani 2010)
• Superoptimizer: a look at the smallest program (Massalin 1987)
• A Hacker's Assistant (Warren 2008)

2. Aha experimentation

• Using provided functions (abs, avg), experimented with the following:
  • different numbers of instructions
  • different immediate operand sets
  • more extensive trial input-output pairs

Average

Operations	Solutions	Total Instructions	Process Time (seconds)
1-3	0	133, 36200, 8220022	~0, 0.001, 0.154
4	3	31221243	75.880
5

Absolute Value

Operations	Solutions	Total Instructions	Process Time (seconds)
1-2	0	103, 11695	~0, ~0
3	4	1857560	0.041
4	951	571410152	11.962
5

3. Experementation with Jeremy Berchtold's GPU Google Colab

• Experimentation with multBy7 functions
  • Tested (x<<3) - x implementation vs other fast and traditional implementation
  • Tested differences in inline functions