On Thu, 23 Jun 2005, Liu Haibin wrote:
Hi,
I want to use profiling information. I know there're two relevent
fields in each basic block, count and frequency. I want to use
frequency because the compiled program is for another architecture so
it cannot run on the host.
Besides the fact that, as Zdenek hsa pointed out, this is not a useful
situation for -fprofile-arcs, ...
My question is why it is so? I want to know the profiling info, but if
profiling info I get is for another different structure of basic
block, it's useless to me.
This is because it's inserting profiling code.
This isn't magic, it's inserting code to do the profiling, which
necessarily changes the basic blocks.
The profiling info you get is for the original set of basic blocks.
