"Paulo J. Matos" <[EMAIL PROTECTED]> writes: > INTEGER_CST seems to have TREE_INT_CST_LOW and TREE_INT_CST_HIGH > fields (tree.def). Each has 32 bits.
No, each has type HOST_WIDE_INT. On a 64-bit host they will be 64 bits. > 1 - Should I use ints for these fields? I don't understand the question. > 2 - If the INTEGER_CST is negative, is the negative part only in one > of the high or low fields, i.e. low is always unsigned and high is > always signed? If not, how do I know if the constant is signed or > unsigned? Negative numbers are sign extended through both the high and low fields. That said, you need to look at the type of the constant to know whether you have a negative number or a very large positive number. Ian
