[llvm] [SCEV] Add initial pattern matching for SCEV constants. (NFC) (PR #119389)

[Florian Hahn via llvm-commits]

================
@@ -0,0 +1,45 @@
+//===- ScalarEvolutionPatternMatch.h - Match on SCEVs -----------*- C++ -*-===//
----------------
fhahn wrote:

Replaced with just  ```/===----------------------------------------------------------------------===//`

https://github.com/llvm/llvm-project/pull/119389