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Checklist for Machine Description Assignments.
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The  assignments have  been designed  with specific  learning objectives
that  include  the following:  understanding  the  structure of  machine
descriptions,   RTL   patterns,   and  define_insn   and   define_expand
constructs. The  following self-assessment list  should give you  a fair
idea of the extent to which you have learnt the expected material.

Please try to respond to these statements after doing the assignments on
GIMPLE.  Your responses  to the  statements  could be:  `Yes', `No',  or
`Partly', or `I am not sure'.

Please  make sure  that you  move to  an assignment  only after  getting
mostly  `Yes' on  the checklist  for  the previous  assignment. This  is
advisable  even if  this seems  to slow  down your  progress because  in
general, an  assignment assumes the  knowledge gained from  the previous
assignment.

In case  you are  unable to  say `Yes'  for many  of the  statements, we
advise you to  talk to a Teaching Assistant to  clarify the concepts. If
the need be, we  will try to find someone to  explain the concepts later
in the evening.

1) I am able to build cc1 for spim1 target.
2) I am able to map GIMPLE statements to spim assembly language.
3) I am able to understand RTL instructions.
4) I am able to map GIMPLE statements to RTL instructions.
5) I know the use of define_insn.
6) I am able to understand RTL template.
        a) I know the functionality of predicates.
        b) I know the functionality of constraints.
        c) I know how to use pattern names.
        d) I know what are machine modes.
        e) I know how to specify register, memory and immediate operands.
        f) I know how and where to specify assembly instructions in RTL.
7) I know the use of define_expand.
        a) I know the difference between define_insn and define_expand.
        b) I am able to write a define_expand instruction.
8) I know how to access operands in the C code area of define_expand.
9) I understand the role of the macro FAIL.
10) I understand the role of the macro DONE.                                          
11) I understand the role of C code in define_expand.
12) I  understand  how   GCC  matches  MD-RTLs  so  as   to  output  the
    corresponding assembly code.