[LLVMdev] Definition of values in compare instruction

[Silky Arora]

Hi,

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.

Thanks!

Regards,
Silky Arora
University of Michigan
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