[llvm] [opt] Add --save-stats option (PR #167304)

[Yingwei Zheng via llvm-commits]

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@@ -515,11 +526,25 @@ codegen::RegisterCodeGenFlags::RegisterCodeGenFlags() {
       cl::init(false));
   CGBINDOPT(DisableIntegratedAS);
 
-#undef CGBINDOPT
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dtcxzyw wrote:

Should be moved after RegisterSaveStatsFlag

https://github.com/llvm/llvm-project/pull/167304