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2014 Jul 23
4
[LLVMdev] the clang 3.5 loop optimizer seems to jump in unintentional for simple loops
the clang 3.5 loop optimizer seems to jump in unintentional for simple loops
the very simple example
----
const int SIZE = 3;
int the_func(int* p_array)
{
int dummy = 0;
#if defined(ITER)
for(int* p = &p_array[0]; p < &p_array[SIZE]; ++p) dummy += *p;
#else
for(int i = 0; i < SIZE; ++i) dummy += p_array[i];
#endif
return dummy;
}
int main(int argc, char** argv)
{
int* array = new int[SIZE];
for(int i = 0; i &...