[cfe-dev] Need Help: A small problem in Clang

[David Chisnall]

Is this a class assignment?  Someone else was asking the same question recently, and it is impossible to help because the problem is poorly specified (for example, in optimised code this may end up being a small number of vector reads and writes, or a single memcpy call).

David

> On 27 Mar 2015, at 08:57, phongph <phongph.hut at gmail.com> wrote:
> 
> Hi everyone,
> 
> I am having a small problem as follows, please help me:
> 
> Implement, using LLVM/Clang, to count the number of memory operations
> executed in a given function (recording reads and writes of fields and
> arrays elements) of C programs. Here is an example: 
> 
>            int* test(int* b, int* c) { 
>               ... 
>               for (int i=0; i<10; i++) { 
>                   a[i] =b[i] + c[i]; 
>               } 
>               return a; 
>            } 
> 
> After execution of the whole program, the output of the instrumentation
> should return something like this for each method: "function test: reads =
> 20; writes = 10". 
> 
> Thank you very much!
> 
> 
> 
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