[llvm] Port gisel cse analysis to npm (PR #179815)

[Aiden Grossman via llvm-commits]

================
@@ -445,6 +445,19 @@ GISelCSEAnalysisWrapper::get(std::unique_ptr<CSEConfigBase> CSEOpt,
   }
   return Info;
 }
+
+AnalysisKey GISelCSEAnalysis::Key;
+
+GISelCSEAnalysis::Result
+GISelCSEAnalysis::run(MachineFunction &MF, MachineFunctionAnalysisManager &) {
+  auto Info = std::make_unique<GISelCSEInfo>();
+
+  Info->setCSEConfig(getStandardCSEConfigForOpt(TM->getOptLevel()));
+  Info->analyze(MF);
+
----------------
boomanaiden154 wrote:

Nit: All the vertical whitespace in this function is probably unnecessary.

https://github.com/llvm/llvm-project/pull/179815