[LLVMdev] Definition of values in compare instruction

Silky Arora silkyar at umich.edu
Wed Dec 12 13:22:13 PST 2012


I am working on Instruction prefetching, and wish to pre-fetch (insert
intrinsic prefetch instruction) basic blocks based long before the branch
operation is seen. I was thinking if there is any way of extracting the
values used in the compare instruction, and going to there definition to
speculate on the taken branch.

I would like to know if I can extract the values from the instruction, and
go to their available/reaching definition.


Silky Arora
University of Michigan
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