[llvm] [LV] Fix emission of debug message in legality check (PR #101924)

[Nikita Popov via llvm-commits]

================
@@ -0,0 +1,36 @@
+; This test asserts that we don't emit both
+; successful and unsuccessful message about vectorization.
+
+; RUN: opt -passes=loop-vectorize -debug -disable-output -pass-remarks-missed=loop-vectorize %s 2>&1 | FileCheck %s
+; CHECK-NOT: LV: We can vectorize this loop
----------------
nikic wrote:

I'd also add this CHECK-NOT after the CHECK as well, to make sure it doesn't happen in either order.

https://github.com/llvm/llvm-project/pull/101924