[LLVMdev] how to print execution trace

[陈厅]

Hi everyone


    I am a newbie to llvm. I want to record the execution (statement/instruction) trace of a program. For example, a C program is like this:


1:    sum = 0;
2:    for(i = 0; i < 2; i++)
3:        sum += i;
4:    printf("%d", sum);


    The execution trace would be something like 1->2->3->2->3->2->4.


    So how to achieve this goal? by writing a llvm pass?


    Is there an example about this in the codebase of llvm?


    Thank you in advance


    Ting Chen
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