[llvm] [LoopVectorize][NFC] Rewrite tests to check output of vplan cost model (PR #113697)

[David Sherwood via llvm-commits]

================
@@ -4,11 +4,11 @@
 ; Check that cost model is not executed twice for VF=2 when vectorization is
 ; forced for a particular loop.
 
-; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{[0-9]+}} = load i32
-; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   store i32
-; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{[0-9]+}} = load i32
-; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   store i32
-; CHECK: LV: Vector loop of width 2 costs: {{[0-9]+}}.
+; CHECK: Cost of 1 for VF 2: WIDEN ir<%0> = load vp<%4>
+; CHECK: Cost of 1 for VF 2: WIDEN store vp<%5>, ir<%val>
+; CHECK-NOT: Cost of 1 for VF 2: WIDEN ir<%0> = load vp<%4>
+; CHECK-NOT: Cost of 1 for VF 2: WIDEN store vp<%5>, ir<%val>
+; CHECK: Cost for VF 2: 5
----------------
david-arm wrote:

Yeah you're right. It's probably better to make it less specific given the CHECK lines have to be hand-written.

https://github.com/llvm/llvm-project/pull/113697