[PATCH] Teach IRCE to look at branch weights when recognizing range checks

[hfinkel at anl.gov]

================
Comment at: lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp:358
@@ +357,3 @@
+
+static bool GetBranchWeights(BranchInst *BI, uint64_t &LeftWeight,
+                             uint64_t &RightWeight) {
----------------
Please don't access the branch_weights metadata directly. Use the BranchProbabilityInfo analysis (which also includes some useful static heuristics).

http://reviews.llvm.org/D7192

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