Compilers: Principles and Practice by Pearson

Intermediate Code 261

number of functions and macros provided by the GCC, which help us to manipulate the tree. In our

program, we need not directly handle the trees. Instead we use the function calls.

Some of the GIMPLE node types are:

Binary operator – BIT AND EXPR, MAX EXPR

Comparison – EQ EXPR, LTGT EXPR

Constants – INTEGER CST, STRING CST

Declaration – FUNCTION DECL, LABEL DECL

Expression – MODIFY EXPR, ADDR EXPR, BIND EXPR

Reference – COMPONENT REF, ARRAY RANGE REF

Statement – EXIT EXPR, GOTO EXPR

Type – BOOLEAN TYPE, INTEGER TYPE

Unary – ABS EXPR, NEGATE EXPR, NOP EXPR

RTL stands for register transfer language. It is the intermediate code handled ...