DSGraph question

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1

Dear LLVM,

If I have a DSGraph dsg, I want to duplicate a DSgraph which is exactly
the same with dsg. How should I do that?

Should I use
DSGraph dsg2 = dsg;

or use some other methods?

Thanks,
xiaodong

2

If I have a DSGraph dsg, I want to duplicate a DSgraph which is exactly
the same with dsg. How should I do that? Should I use DSGraph dsg2 =
dsg; or use some other methods?

Yes, use the copy constructor. If you want mapping between the original
and the new graph's nodes, you can also use this form of the copy ctor:

  DSGraph(const DSGraph &DSG, std::map<const DSNode*, DSNodeHandle> &NodeMap);

See the header file.

-Chris

3

I just recompiled the opt executable, but when trying to load a
dynamic module I get the following error:

% opt -load $LLVM_DIR/lib/Debug/libdsgraphshow.so --help
Error opening
'/usr/dcs/projects/cs426/juanruiz/llvm/lib/Debug/libdsgraphshow.so':
ld.so.1: opt: fatal: relocation error: file
/usr/dcs/projects/cs426/juanruiz/llvm/lib/Debug/libdsgraphshow.so:
symbol _ZN7DSGraphC1ER8FunctionPS_: referenced symbol not found
  -load request ignored.

$LLVM_DIR points to the right directory, libdsgraphshow.so exists and
is in the right place, and both opt and libdsgraphshow.so are freshly
recompiled.

Any ideas?

4

I just recompiled the opt executable, but when trying to load a
dynamic module I get the following error:
Any ideas?

You must link opt to the datastructure library for this to work. To do
this, add the string "datastructure" somewhere near the beginning of the
USEDLIBS option in tools/opt/Makefile.

-Chris