Hi, all I want to know every instructions an application runs.
So , first , I need to konw every basic blocks' frequency. I'd like to use -fprofile-generate and -fprofile-use get basic block counts. As GCC collect the profile information at pass-tree-profile, I wander whither the instrumentation may restrict some optimization? For example: gcc -fprofile-generate -O3 foo.c -o foo gcc -O3 foo.c -o bar Dose "foo" and "bar" are equally optimized? thanks! -- Jianzhang Peng
