Begin combining OperandType and size in Compiler
eliminate unused Compiler method
move topOfStack tracking from Compiler to Frame (in compile.cpp)
(TESTS BROKEN) implement stack management in compile.cpp instead of Compiler
(TESTS BROKEN) build succeeding after mass execution of compiler::Stacks
(TESTS BROKEN) Simple test succeeding!!
(BUILD BROKEN) in the middle of killing the old register allocator
(TESTS BROKEN) complete sledge hammering, fix build
(TESTS BROKEN) rename Event -> Instr
(TESTS BROKEN) make append* compiler methods return a Value* as appropriate
fix debug build
remove old files, begin sketching out new register allocator
add calls to addUse
add LoadInstr and StoreInstr
more instr work
(BUILD BROKEN) in the middle of adding explicit Block* arguments
finish adding explicit Block* arguments
begin adding legalize pass
make Compiler interface substantially more ssa-like
add Param, Const, and Alloca Instrs