[llvm] [AIX] Support per global code model. (PR #79202)

[Chen Zheng via llvm-commits]

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@@ -474,6 +474,55 @@ static void collectTOCStats(PPCAsmPrinter::TOCEntryType Type) {
   }
 }
 
+static CodeModel::Model getCodeModel(const PPCSubtarget &S,
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chenzheng1030 wrote:

Can we reuse this function in both file `llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp` and `llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp`? The third parameter can be `GlobalVariable`? See `TargetMachine::isLargeGlobalValue`

https://github.com/llvm/llvm-project/pull/79202