From df6087ee379488b0251805c491f6b0b6b8c6ed1d Mon Sep 17 00:00:00 2001
From: Sterling Augustine <saugustine@google.com>
Date: Thu, 16 Jun 2022 14:00:44 -0700
Subject: [PATCH] Move debug-only code inside LLVM_DEUG to prevent unused
 variable warnings.

---
 llvm/lib/Analysis/DependenceAnalysis.cpp | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/llvm/lib/Analysis/DependenceAnalysis.cpp b/llvm/lib/Analysis/DependenceAnalysis.cpp
index 31794b7..3d2d84e 100644
--- a/llvm/lib/Analysis/DependenceAnalysis.cpp
+++ b/llvm/lib/Analysis/DependenceAnalysis.cpp
@@ -3341,12 +3341,14 @@ bool DependenceInfo::tryDelinearizeFixedSize(
     Instruction *Src, Instruction *Dst, const SCEV *SrcAccessFn,
     const SCEV *DstAccessFn, SmallVectorImpl<const SCEV *> &SrcSubscripts,
     SmallVectorImpl<const SCEV *> &DstSubscripts) {
-  const SCEVUnknown *SrcBase =
-      dyn_cast<SCEVUnknown>(SE->getPointerBase(SrcAccessFn));
-  const SCEVUnknown *DstBase =
-      dyn_cast<SCEVUnknown>(SE->getPointerBase(DstAccessFn));
-  assert(SrcBase && DstBase && SrcBase == DstBase &&
-         "expected src and dst scev unknowns to be equal");
+  LLVM_DEBUG({
+    const SCEVUnknown *SrcBase =
+        dyn_cast<SCEVUnknown>(SE->getPointerBase(SrcAccessFn));
+    const SCEVUnknown *DstBase =
+        dyn_cast<SCEVUnknown>(SE->getPointerBase(DstAccessFn));
+    assert(SrcBase && DstBase && SrcBase == DstBase &&
+           "expected src and dst scev unknowns to be equal");
+    });
 
   SmallVector<int, 4> SrcSizes;
   SmallVector<int, 4> DstSizes;
-- 
2.7.4