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2010 Aug 26
2
[LLVMdev] analysis and transformation of Machine IRs
Hello LLVM developers,
I have a few questions regarding analysis and transformation of Machine IRs.
I am writing a scheduling pass that transforms single basic block loops.
Details of the pass can be found in an email I sent two weeks ago.
http://lists.cs.uiuc.edu/pipermail/llvmdev/2010-August/033808.html
I have changed my pass to run before Live Variable Analysis since then.
1, Induction variable recognition
I need to find which SSA value is used as the induction variable that
controls a loop. Currently I determine that a value is the induction
variable I am looking for if the following condi...