[llvm] [LoopInterchange] Fix overflow in cost calculation (PR #111807)

[Madhur Amilkanthwar via llvm-commits]

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@@ -0,0 +1,44 @@
+; REQUIRES: asserts
+
+; RUN: opt < %s -passes=loop-interchange -S -debug 2>&1 | FileCheck %s
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madhur13490 wrote:

test with -cache-line-size too to bolster checks?

https://github.com/llvm/llvm-project/pull/111807