How, i can work with read-rtl.c

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How, i can work with read-rtl.c
\ Klaus Friedrich (28 Nov 2006)
. \ Ian Lance Taylor (28 Nov 2006)

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Subject:	How, i can work with read-rtl.c
Group:	Gcc-help
From:	Klaus Friedrich
Date:	28 Nov 2006

Hallo,

my name is Klaus Friedrich. For my diploma thesis, i will work with the
gcc4.1 internals. I would like to extract information about the RTL
language. So i try to use for exapmle GET_CODE(x) and PUT_CODE(x,
newcode) funtions. For this purpose i will read a RTX from a
external ASCII file, like ....00.expand.

Please tell me, how i can use read_rty(), print_rtx() functions, to get
a RTX object!

Can you tell me, how i can use the read-rtl.c and rtl.h in a short C/C++
ProgramExample, because i don't
know, how i can include this files from the gcc source code dir.

Thank You very much!!!
Klaus Friedrich