comparing IR instruction within different basic blocks

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#1

Hello all,

What is the best way to compare IR instructions in one basic block to another one’s?

Thank you,

Best,

Parnian

#2

in what sense?

#3

comparing arithmetical operations in a function’s IR to operations in another function’s IR. I want to see they share similar arithmetic opcode, I don’t care about their sequence at this time.

Thanks,

Best,

Parnian

#4

If you want just the opcode you a can get it from the instruction. What is the actual question?

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#5

Take a look at llvm-diff:

http://llvm.org/docs/CommandGuide/llvm-diff.html

I don't use it by myself, so I cannot give any advice/help about it.

Michael

#6

The question seems to be cryptic to me as well.
Do you want to do it during code generation or after the code is generated (like binary to binary comparison)?