Bill Nell 59e90f0f43 [BOLT] Make function reordering more robust with stale data. ...

Summary:
Rewrote the guts of buildCallGraph.  There are two new options to control how the CG is created.  UsePerfData controls whether we use the perf data directly to construct the CG for functions with a stale profile.  IgnoreRecursiveCalls omits recursive calls from the CG since they might be skewing results unfairly for heavily recursive functions.

I've changed the way BinaryFunction::estimateHotSize() works.  If the function is marked as split, I count the size of all the non-cold blocks.  This gives a different but more accurate answer than the old method.

I've improved and updated the CG build stats with extra information.

(cherry picked from FBD5224183)

2017-06-09 13:17:36 -07:00

bolt

[BOLT] Make function reordering more robust with stale data.

2017-06-09 13:17:36 -07:00

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