[llvm] [PowerPC][AIX] Update the initial CPU type for AIX. (PR #102277)

[Chen Zheng via llvm-commits]

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@@ -1,8 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4
-; RUN: llc -mtriple powerpc-ibm-aix-xcoff -stop-after=machine-cp -verify-machineinstrs < %s | \
+; RUN: llc -mtriple powerpc-ibm-aix-xcoff -mcpu=generic -stop-after=machine-cp -verify-machineinstrs < %s | \
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chenzheng1030 wrote:

It does not make sense to me to set `-mcpu=generic` with this patch for all LIT cases. Unless the test point is broken with the CPU change, otherwise we should update the cases.

https://github.com/llvm/llvm-project/pull/102277