Add an assertion for a condition that's always true, and not

immediately obvious.

llvm-svn: 66062

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 641f9b0e5c1..57f59570171 100644
--- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -2376,6 +2376,9 @@ ICmpInst *LoopStrengthReduce::OptimizeSMax(Loop *L, ICmpInst *Cond,
       AR->getStepRecurrence(*SE) != One)
     return Cond;
 
+  assert(AR->getLoop() == L &&
+         "Loop condition operand is an addrec in a different loop!");
+
   // Check the right operand of the select, and remember it, as it will
   // be used in the new comparison instruction.
   Value *NewRHS = 0;