[llvm] [X86][LoopVectorize] Enable MaximizeBandwidth by default on X86 with generic split cost floor (PR #201666)

[Simon Pilgrim via llvm-commits]

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@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 6
-; RUN: opt -passes=loop-vectorize -S < %s 2>&1 | FileCheck %s --check-prefix=X86
-; RUN: opt -passes=loop-vectorize -mattr=+avx512f -S < %s 2>&1 | FileCheck %s --check-prefix=AVX512
+; RUN: opt -passes=loop-vectorize -vectorizer-maximize-bandwidth=false -S < %s 2>&1 | FileCheck %s --check-prefix=X86
+; RUN: opt -passes=loop-vectorize -mattr=+avx512f -vectorizer-maximize-bandwidth=false -S < %s 2>&1 | FileCheck %s --check-prefix=AVX512
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RKSimon wrote:

switching it off for so many tests is suspicious 

https://github.com/llvm/llvm-project/pull/201666