Hi, I ported the indirect-call topn target profile from google branch. It implements the algorithm described in "Value profiling and optimization" by Brad Calder and Peter Feller. This patch is about the instrumentation. When --param=indir-call-topn-profile=1 is specified, we will use indirection-call-topn profiler in this patch, instead of indirect_call_profiler_v2.
Tested with gcc regression tests and the runtime patch (in a separated patch). Thanks, -Rong
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