[clang] [llvm] [AIX] Implement the ifunc attribute. (PR #153049)

[Fangrui Song via cfe-commits]

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@@ -397,6 +399,98 @@ void llvm::embedBufferInModule(Module &M, MemoryBufferRef Buf,
   appendToCompilerUsed(M, GV);
 }
 
+void llvm::lowerIFuncsOnAIX(Module &M) {
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MaskRay wrote:

Should not introduce new target-specific intrinsic uses in lib/Transform. I think the preferred way is to avoid using LowerIFuncPass and adding a new Target/PowerPC pass instead.

https://github.com/llvm/llvm-project/pull/153049