[clang] [NFC] Reduce number of run steps in ppc rop-protect test. (PR #139607)

[Amy Kwan via cfe-commits]

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@@ -1,20 +1,10 @@
 // RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
 // RUN:   -mcpu=pwr10 -mrop-protect %s 2>&1 | FileCheck %s --check-prefix=HASROP
 // RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
-// RUN:   -mcpu=power10 -mrop-protect %s 2>&1 | FileCheck %s --check-prefix=HASROP
-// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
-// RUN:   -mcpu=pwr9 -mrop-protect %s 2>&1 | FileCheck %s --check-prefix=HASROP
-// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
-// RUN:   -mcpu=power9 -mrop-protect %s 2>&1 | FileCheck %s --check-prefix=HASROP
-// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
-// RUN:   -mcpu=pwr8 -mrop-protect %s 2>&1 | FileCheck %s --check-prefix=HASROP
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amy-kwan wrote:

I don't feel super strongly either way, but should we keep the `pwr` version for consistency? 

https://github.com/llvm/llvm-project/pull/139607