Dear Marc,
Thank you very much! Just another quick question.. Can I iterate the
operands of a GIMPLE statement, like how I iterate a LLVM instruction in
the following way?
Instruction* instr;
for (size_t i=0; i< instr->getNumOperands();i++) {
instr->getOperand(i))
}
Sorry for such naive questions.. I actually searched the documents and
GIMPLE pretty print for a while but couldn't find such a way of accessing
arbitrary numbers of operands...
Best,
Shuai
On Mon, Jun 15, 2020 at 12:10 PM Marc Glisse <marc.gli...@inria.fr> wrote:
> On Mon, 15 Jun 2020, Shuai Wang via Gcc wrote:
>
> > I am trying to analyze the following gimple statements, where the data
> > dependency of _23 is a tree, whose leave nodes are three constant values
> > {13, 4, 14}.
> >
> > Could anyone shed some light on how such a backward traversal can be
> > implemented? Given _22 used in the last assignment, I have no idea of how
> > to trace back to its definition on the fourth statement... Thank you
> > very much!
>
> SSA_NAME_DEF_STMT
>
> > _13 = 13;
> > _14 = _13 + 4;
> > _15 = 14;
> > _22 = (unsigned long) _15;
> > _23 = _22 + _14;
>
> --
> Marc Glisse
>
