[cfe-dev] Instances of Variable Usage (SSA form)

[Anna Zaks]

You could search for all DeclRefExprs that refer to the particular variable declaration (by doing an AST walk).

Note that this will find only syntactic references to a particular variable, but will not trace the data flow. For example,
int x = 0;
int y = x;
use(y); // This will not be a use of x.

(SSA form just guarantees that there is only a single assignment for each variable.)

Anna.
On Oct 18, 2012, at 11:21 PM, madil90 <madil90 at gmail.com> wrote:

> Hi,
>   I want to use clang to find out all the instances of a variable usage.
> e.g. I want to find out every place where the variable 'x' was used? I know
> that, in theory, this problem can be solved using the SSA form. How can I do
> this in clang?
> 
> Regards,
> Adil
> 
> 
> 
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