[LLVMdev] Alias Analysis accuracy

Krzysztof Parzyszek kparzysz at codeaurora.org
Fri Sep 21 14:46:10 PDT 2012

On 9/21/2012 4:35 PM, Welson Sun wrote:
> Dear LLVM,
> I would like to understand how to improve the LLVM alias analysis
> accuracy. I am currently using llvmgcc 2.9 and llvm 3.0. Here is the C code:
> void foo(int a[SIZE], int b[SIZE], int c[SIZE])
> {
>    for(int i=0; i<SIZE; i++)
>      c[i] = a[i] + b[i];
> }

This is equivalent to
void foo(int *a, int *b, int *c)
    for(int i=0; i<SIZE; i++)
      c[i] = a[i] + b[i];

and so you can call this function with the same array for all parameters.


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