[llvm] [llvm][LSR] Fix where invariant on ScaledReg & Scale is violated (PR #112576)

[Quentin Colombet via llvm-commits]

================
@@ -0,0 +1,30 @@
+; Reduced from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65323 by @RKSimon
+;
+; RUN: opt -S -passes=loop-reduce %s | FileCheck %s
+;
+; Make sure we don't trigger an assertion.
----------------
qcolombet wrote:

In the future please use filename that are more expressive.
You can still reference the bug number in the comment.

https://github.com/llvm/llvm-project/pull/112576