[PATCH] D120882: fix overflow in example code.

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fix overflow in example code in 'llvm/lib/Transforms/Scalar/LoopInterchange.cpp'


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D120882

Files:
  llvm/lib/Transforms/Scalar/LoopInterchange.cpp


Index: llvm/lib/Transforms/Scalar/LoopInterchange.cpp
===================================================================
--- llvm/lib/Transforms/Scalar/LoopInterchange.cpp
+++ llvm/lib/Transforms/Scalar/LoopInterchange.cpp
@@ -1069,8 +1069,8 @@
             continue;
 
           // If we find the inner induction after an outer induction e.g.
-          // for(int i=0;i<N;i++)
-          //   for(int j=0;j<N;j++)
+          // for(int i=1;i<N;i++)
+          //   for(int j=1;j<N;j++)
           //     A[i][j] = A[i-1][j-1]+k;
           // then it is a good order.
           if (AR->getLoop() == InnerLoop) {
@@ -1083,8 +1083,8 @@
             }
           }
           // If we find the outer induction after an inner induction e.g.
-          // for(int i=0;i<N;i++)
-          //   for(int j=0;j<N;j++)
+          // for(int i=1;i<N;i++)
+          //   for(int j=1;j<N;j++)
           //     A[j][i] = A[j-1][i-1]+k;
           // then it is a bad order.
           if (AR->getLoop() == OuterLoop) {


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