[LLVMdev] Re moving the instrumented instructions at runtime

[yb999]

Hello, 

I have some questions about removing the instrumented instructions at
runtime. 

Assume I instrument some instructions by using some transformation passes.
At runtime, I just need those instrumented instructions at the beginning,
and I would like to remove instrumented instructions at runtime to reduce
overhead. 

Does anyone know how to do this by using LLVM? 

Thanks, 

Bo 
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