[clang] [llvm] [AIX] support builtin_cpu_is() for aix (PR #80069)

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git-clang-format --diff fc7c79b60ca0846f1cc916b6b04eedd1fc21537e e0eb54954778a9321d520748d63732e2f66bc5c9 -- clang/test/CodeGen/aix-builtin-cpu-is.c clang/test/Sema/aix-builtin-cpu-unsupports.c clang/lib/Basic/Targets/PPC.cpp clang/lib/Basic/Targets/PPC.h clang/lib/CodeGen/CGBuiltin.cpp clang/lib/Sema/SemaChecking.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/Basic/Targets/PPC.cpp b/clang/lib/Basic/Targets/PPC.cpp
index 70f95f11b9..e43a9ff92a 100644
--- a/clang/lib/Basic/Targets/PPC.cpp
+++ b/clang/lib/Basic/Targets/PPC.cpp
@@ -915,7 +915,7 @@ bool PPCTargetInfo::validateCpuIs(StringRef CPUName) const {
   assert(Triple.isOSLinux() && "Triple for AIX OS has already been checked; "
                                "it must be Linux OS here.");
 #define PPC_LNX_CPU(NAME, NUM) .Case(NAME, true)
-    return llvm::StringSwitch<bool>(CPUName)
+  return llvm::StringSwitch<bool>(CPUName)
 #include "llvm/TargetParser/PPCTargetParser.def"
-        .Default(false);
+      .Default(false);
 }

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https://github.com/llvm/llvm-project/pull/80069