[NFC][AArch64] Fix typo.

[ncv]

Summary

Coaleascer should be coalescer.

[Jim]

Thanks.

[ncv]

Thanks! Can someone commit this for me?

[Jim]

Hi, I can help to commit it for you.
You can obtain the commit right by following https://llvm.org/docs/DeveloperPolicy.html#obtaining-commit-access.

llvm/lib/Target/AArch64/AArch64TargetMachine.cpp

void AArch64PassConfig::addPreRegAlloc() {
   // Change dead register definitions to refer to the zero register.
   if (TM->getOptLevel() != CodeGenOpt::None && EnableDeadRegisterElimination)
     addPass(createAArch64DeadRegisterDefinitions());
 
   // Use AdvSIMD scalar instructions whenever profitable.
   if (TM->getOptLevel() != CodeGenOpt::None && EnableAdvSIMDScalar) {
     addPass(createAArch64AdvSIMDScalar());
     // The AdvSIMD pass may produce copies that can be rewritten to
-    // be register coaleascer friendly.
+    // be register coalescer friendly.
     addPass(&PeepholeOptimizerID);
   }
 }
 
 void AArch64PassConfig::addPostRegAlloc() {
   // Remove redundant copy instructions.
   if (TM->getOptLevel() != CodeGenOpt::None && EnableRedundantCopyElimination)
     addPass(createAArch64RedundantCopyEliminationPass());