[llvm] [AArch64][SLP] Add NFC test cases for floating point reductions (PR #106507)

[Alexey Bataev via llvm-commits]

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@@ -17,17 +19,6 @@ define void @strict_fp_reductions() {
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 20 for instruction: %fadd_v4f128 = call fp128 @llvm.vector.reduce.fadd.v4f128(fp128 undef, <4 x fp128> undef)
 ; CHECK-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
-; FP16-LABEL: 'strict_fp_reductions'
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alexey-bataev wrote:

These checks were removed, they must be restored

https://github.com/llvm/llvm-project/pull/106507