s s - princeton university computer science · each definition modified to define brand-new...
TRANSCRIPT
![Page 1: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/1.jpg)
1
Topic 10: Static Single Assignment
COS 320
Compiling Techniques
Princeton University Spring 2015
Prof. David August
Def-Use Chains, Use-Def Chains
Use-Def Chains, Def-Use Chains
![Page 2: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/2.jpg)
Static Single Assignment
Why SSA?
Conversion to SSA Code
![Page 3: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/3.jpg)
Conversion to SSA Form
Conversion to SSA Form
Conversion to SSA Form
![Page 4: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/4.jpg)
Conversion to SSA Form
Conversion to SSA Form
Dominance Frontier
![Page 5: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/5.jpg)
Dominance Frontier
Dominance Frontier Computation
SSA Example
![Page 6: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/6.jpg)
Dominator Analysis
SSA Example
The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again.
SSA Example
![Page 7: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/7.jpg)
SSA Example
SSA Example
Static Single Assignment
![Page 8: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/8.jpg)
SSA Dominance Property
SSA Dead Code Elimination
SSA Dead Code Elimination
![Page 9: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/9.jpg)
SSA Simple Constant Propagation
SSA Simple Constant Propagation
The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again.
SSA Conditional Constant Propagation
![Page 10: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/10.jpg)
SSA Conditional Constant Propagation
SSA Conditional Constant Propagation
SSA Conditional Constant Propagation
![Page 11: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/11.jpg)
SSA Conditional Constant Propagation
SSA Conditional Constant Propagation
SSA Conditional Constant Propagation Example
![Page 12: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/12.jpg)
SSA Conditional Constant Propagation Example
SSA Conditional Constant Propagation Example
SSA Conditional Constant Propagation Example
![Page 13: s s - Princeton University Computer Science · Each definition modified to define brand-new register, ... Solve path-convergence ... SSA form make certain optimizations quick and](https://reader031.vdocument.in/reader031/viewer/2022030707/5af4b61b7f8b9a9e598d17e7/html5/thumbnails/13.jpg)
SSA Conditional Constant Propagation Example