[LoopUnrollAnalyzer] Take into account cost of instructions controlling branches, along with their operands.
Previously, we didn't add their and their operands cost, which could've
resulted in unrolling loops for no actual benefit.
llvm-svn: 269985
diff --git a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
index 034cb04..d167c44 100644
--- a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
@@ -506,6 +506,7 @@
BBWorklist.insert(Succ);
else
ExitWorklist.insert({BB, Succ});
+ AddCostRecursively(*TI, Iteration);
}
// If we found no optimization opportunities on the first iteration, we