differentiating between tree node and phi node
Ian Lance Taylor
Mon Sep 17 02:22:00 GMT 2007
ranjith kumar <email@example.com> writes:
> I know that SSA_NAME_DEF_STMT() funtion returns a
> pointer to a statement which defines the variable
> passed as an argument.
> I want to know whether the returned pointer to the
> statement is a pointer to an 'PHI node' or pointer to
> a 'tree node'.
For this kind of question, why don't you try it and find out? The
source code and the compiler are right there.
SSA_NAME_DEF_STMT will always return a pointer to a tree node. That
tree node will sometimes be a PHI_NODE, and will sometimes be a
MODIFY_EXPR. There may be other possibilies; I'm not sure offhand.
> Is there any function/macro available to find it?
I don't understand this question.
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