nathanpotolsky / assignment3-laprej

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Assignment 3 - Justin LaPre

Comp Org assignment 3

DUE DATE: 11:59 p.m., Friday, March 11th, 2016.

Assignment Description

For this INDIVIDUAL assignment (no groups allowed) you will write a 2-D matrix program similar to Assignment 1. The twist is this time you must write your functions in LLVM assembly language instead of C. As we saw in class during Lecture 07, you do not need to use the LLVM numbering scheme for your SSA instructions. Instead, use more helpful variable names to aid you.

Again as in Assignment 1, we will be using square matrices only. You must write the missing functions in LLVM assembly. You are not allowed to change any of the function prototypes or modify any of the code in the C file.

You must write the following functions:

• void mm_print(int size, double **matrix) -- print out the matrix
• double ** mm_transpose(int size, double **matrix) -- compute and return the transpose of the matrix
• double **mm_matrix_mult(int size, double **matrix, double **transpose) -- compute and return the result of multiplying matrices matrix and transpose

NOTE: You will likely need to retrieve the top 2 lines of your matrix.ll file by generating main.ll with the command clang -Wall -S -emit-llvm main.c and taking the top two lines starting with target.

Grading Criteria

• Correctness: 85%
  • Print out the matrix correctly.
  • Computes matrix transpose correctly.
  • Computes matrix multiplication correctly.
• Documentation/Comments: 15% (i.e., liberal use of comments so we can understand your program).

Excuses involving a lack of understanding of Github will not be tolerated and will result in a 20 point penalty in addition to late day usage. It is a simple enough task to check whether you have pushed your work to Github or not: in a web browser, go to your Github user page and find Assignment 3. If it says the last change was X minutes ago, you're probably all set. If not, contact one of the TAs immediately. If you still have uncertainties about Github, talk to one of the TAs or an undergraduate mentor sooner rather than later.