Added todo on CSE.

0443f16d · Jayke Meijer · 1e2cf2e9 · 0443f16d
Commit 0443f16d authored Dec 27, 2011 by Jayke Meijer
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TODO CSE.txt TODO CSE.txt +8 -0

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--- a/TODO CSE.txt
+++ b/TODO CSE.txt
+Common subexpression elimination
+
+Loop through statements of each block
+    for each binary operator, look back for usage of rs and rt. If rs or rt are
+    assigned, break. If exact same operator is found, add it to the list of
+    common subexpressions. If you reach the end of the block, or rs or rt are
+    assigned, make new destination address, and change each occurence of this
+    expression with a move from the new register address.