[LV] Also verify loops in vector loop removal tests.

Also verify loop info in tests added in 7d6ec3b.

Author: fhahn

llvm/test/Transforms/LoopVectorize/vector-loop-backedge-elimination.ll

@@ -1,7 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
-; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=1 -S %s | FileCheck --check-prefixes=CHECK,VF8UF1 %s
-; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=2 -S %s | FileCheck --check-prefixes=CHECK,VF8UF2 %s
-; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=16 -force-vector-interleave=1 -S %s | FileCheck --check-prefixes=CHECK,VF16UF1 %s
+; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=1 -S %s | FileCheck --check-prefixes=VF8UF1 %s
+; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=8 -force-vector-interleave=2 -S %s | FileCheck --check-prefixes=VF8UF2 %s
+; RUN: opt -passes='loop-vectorize,verify<loops>' -force-vector-width=16 -force-vector-interleave=1 -S %s | FileCheck --check-prefixes=VF16UF1 %s
 
 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"