[llvm] [X86] Prefer 128-bit vectors for Bulldozer CPUs (PR #225838)

[Simon Pilgrim via llvm-commits]

================
@@ -9,7 +9,7 @@
 ; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=c86-4g-m7 -mattr=+prefer-256-bit -passes=slp-vectorizer -S | FileCheck %s --check-prefixes=AVX,AVX2
 ; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=c86-4g-m8 -mattr=-prefer-256-bit -passes=slp-vectorizer -S | FileCheck %s --check-prefix=AVX512
 ; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=c86-4g-m8 -mattr=+prefer-256-bit -passes=slp-vectorizer -S | FileCheck %s --check-prefixes=AVX,AVX2
-; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=bdver4 -passes=slp-vectorizer -S | FileCheck %s --check-prefix=XOP
+; RUN: opt < %s -mtriple=x86_64-unknown -mcpu=bdver4 -mattr=-prefer-128-bit -passes=slp-vectorizer -S | FileCheck %s --check-prefix=XOP
----------------
RKSimon wrote:

undo this and regenerate 

https://github.com/llvm/llvm-project/pull/225838