[PATCH] Fix PR 23525 - Separate header mass propagation in irregular loops.

[David]

================
Comment at: include/llvm/Analysis/BlockFrequencyInfoImpl.h:1057
@@ -1045,1 +1056,3 @@
+
+    adjustLoopHeaderMass(Loop);
   } else {
----------------
Should this be done iteratively? The mass propagation before this call is based on wrong initial masses for loop headers.

http://reviews.llvm.org/D10348

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