[llvm] [SLP] Move some of X86 tests to common directory (PR #107587)

[Alexey Bataev via llvm-commits]

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@@ -3,9 +3,6 @@
 ; RUN: opt -S -passes=slp-vectorizer -slp-threshold=0 < %s | FileCheck %s --check-prefixes=CHECK,NOTHRESHOLD
 ; RUN: opt -S -passes=slp-vectorizer -slp-threshold=-10000 -slp-min-tree-size=0 < %s | FileCheck %s --check-prefixes=CHECK,MINTREESIZE
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alexey-bataev wrote:

These tests should be tuned for x86 and aarch64

https://github.com/llvm/llvm-project/pull/107587