[LLVMdev] About LLVM
dag at cray.com
Tue Jan 5 12:30:43 PST 2010
On Tuesday 05 January 2010 12:07, ambika wrote:
> I am a new user to LLVM and trying to figure out if this is what I
> really want to complete my thesis work.
> I want to add a pointer analysis phase to compiler optimization. This
> analysis will take profile information into account.
Ok. LLVM has profiling. What kind of profile information do you need?
> My analysis requires to analyse a single statement at a time and then I
> also want to perform some code duplication to finally perform the
Define "statement." Do you mean source-level statement? the LLVM IR works in
terms of instructions. Groups of instructions can be specified in a DAG of
sorts or they can be fissioned into individual instructions that each write to
a temporary virtual register.
There is no high-level notion of a statement or control structure. If you
need that you'll have to build it. No other open source C/C++ compiler
infrastructure provides that either, AFAIK.
> Finally I would like to compare the results with and without my pass on
> benchmark standards.
This is trivial with LLVM.
> I was just wondering if I can do all this with LLVM. I have very short
> period for my thesis and I have to implement and get the results. So I
> will be highly obliged if anyone of you can help me out.
What's "very short?" Doing anything substantial with aliasing/pointer
analysis is not "very short" by definition.
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