CS 4980 CC, As 5: code generation

This is a group assignment that will generally be done during class time. The goal is to identify (largely in pseudocode form) what instructions are generated by different IR tree nodes.

Working in groups, extend Muncher.java to cover the expressions and statements needed to generate MIPS code for MiniJava. This will mean writing code for munchMove, munchStm, and munchExp.

Note: generating executable code requires register allocation. For this assignment, assume that identifying temporaries for sources/destinations of instructions is adequate, and that a temporary is always mapped to a register.

Notes

• Each team has been assigned a particular case for the move instructions (see the numbers in Muncher.java), the conditional jump instructions (CJUMP), and the expressions (CALL or BINOP). See the distributed CJUMP.java and BINOP.java files (in the project files for AS4, specifically in the Tree folder) for the meanings of these numbers. Some instructions may have multiple modes depending on whether the argument is computed or a constant.
• Teams of 2 people only need to write code for the move and jump instructions, not the binary expressions.
• See the home page for references to the MIPS instruction set.
• Your code will not run because you would need additional framework elements. Thus this is being graded more as pseudocode than code (with looser standards).