[clang] [lld] [llvm] [LTO] enable `ObjCARCContractPass` only on optimized build (PR #101114)

[Steven Wu via llvm-commits]

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@@ -588,12 +588,6 @@ bool EmitAssemblyHelper::AddEmitPasses(legacy::PassManager &CodeGenPasses,
   // this also adds codegenerator level optimization passes.
   CodeGenFileType CGFT = getCodeGenFileType(Action);
 
-  // Add ObjC ARC final-cleanup optimizations. This is done as part of the
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cachemeifyoucan wrote:

@ahatanak probably know better. I think when the arc intrinsics are present, the pass is mandatory but I am not sure if the intrinsics are only produced for -O1 and higher.

https://github.com/llvm/llvm-project/pull/101114