[llvm] [DA] add debug log in ExactRDIVtest (PR #189537)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-analysis

Author: Ruoyu Qiu (cabbaken)

<details>
<summary>Changes</summary>

Add debug log


---
Full diff: https://github.com/llvm/llvm-project/pull/189537.diff


1 Files Affected:

- (modified) llvm/lib/Analysis/DependenceAnalysis.cpp (+1-1) 


``````````diff
diff --git a/llvm/lib/Analysis/DependenceAnalysis.cpp b/llvm/lib/Analysis/DependenceAnalysis.cpp
index 959299bed2521..fb9257465eaf1 100644
--- a/llvm/lib/Analysis/DependenceAnalysis.cpp
+++ b/llvm/lib/Analysis/DependenceAnalysis.cpp
@@ -1959,7 +1959,7 @@ bool DependenceInfo::exactRDIVtest(const SCEV *SrcCoeff, const SCEV *DstCoeff,
   LLVM_DEBUG(dbgs() << "\t    DstConst = " << *DstConst << "\n");
   ++ExactRDIVapplications;
   const SCEV *Delta = SE->getMinusSCEV(DstConst, SrcConst);
-  LLVM_DEBUG(dbgs() << "\t    Delta = " << *Delta << "\n");
+  LLVM_DEBUG(dbgs() << "\t    Delta = " << *Delta << " = CM\n");
   const SCEVConstant *ConstDelta = dyn_cast<SCEVConstant>(Delta);
   const SCEVConstant *ConstSrcCoeff = dyn_cast<SCEVConstant>(SrcCoeff);
   const SCEVConstant *ConstDstCoeff = dyn_cast<SCEVConstant>(DstCoeff);

``````````

</details>


https://github.com/llvm/llvm-project/pull/189537