Hello, This patch cleans up some "interesting" things in GCC's profiling support. The most significant changes are the removal of BB_TO_GCOV_INDEX and after_tree_profile. Another visible cleanup is that -profile-generate no longer sets flag_value_profile_transformations.
The rest is mostly just comment updates, because the comments (and the code, see BB_TO_GCOV_INDEX ;-) have not been maintained very well for everything that has changed since, oh, tree-ssa was merged? For example, in value-prof.c:"the flow graph is annotated with actual execution counts, which are later propagated into the rtl for optimization purposes." Or before profile.c:branch_prob(): -/* Instrument and/or analyze program behavior based on program flow graph. - In either case, this function builds a flow graph for the function being - compiled. The flow graph is stored in BB_GRAPH. ... - (...) In this case, the flow graph is - annotated with actual execution counts, which are later propagated into the - rtl for optimization purposes. But (a) branch_prob doesn't build a CFG; (b) the flow graph it doesn't build is not stored in BB_GRAPH; and (c) the execution counts are not "propagated into the rtl". The whole profiling infrastructure needs a lot of TLC before it looks somewhat decent again. This is just the first step :-) Bootstrapped and tested on powerpc64-unknown-linux-gnu. Profilebootstrapped and tested on x86_64-unknown-linux-gnu. OK for trunk? Ciao! Steven
prof_cleanup.diff
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