Simple Assignment w/ Expression

Input Source

int main()
{
    int i, a, b;
    i = a + b;
    return 0;
}

3AC (Three-Address Code)

DATA           , -              , -              , -              
TEXT           , -              , -              , -              
CALL           , main           , 4              , -              
LLAC           , 4              , -              , -              
BR             , PROG_END       , -              , -              
# 
#             int main()
main:
#             {
#                 int i;
#                 while(i < 5){}
label_00000:
LW             , ireg_00000     , 0($fp)         , -              
ADDIU          , ireg_00001     , $zero          , 5              
LT             , ireg_00002     , ireg_00000     , ireg_00001     
BRNE           , label_00001    , $zero          , ireg_00002     
BR             , label_00002    , -              , -              
label_00001:
BR             , label_00000    , -              , -              
label_00002:
JR             , $RA            , -              , -              
PROG_END:
#             }
#

Generated AST