Use StringRef in Pass/PassManager APIs (NFC)

llvm-svn: 283004
diff --git a/llvm/lib/CodeGen/RegAllocPBQP.cpp b/llvm/lib/CodeGen/RegAllocPBQP.cpp
index 64ef008..101b30b 100644
--- a/llvm/lib/CodeGen/RegAllocPBQP.cpp
+++ b/llvm/lib/CodeGen/RegAllocPBQP.cpp
@@ -99,9 +99,7 @@
   }
 
   /// Return the pass name.
-  const char* getPassName() const override {
-    return "PBQP Register Allocator";
-  }
+  StringRef getPassName() const override { return "PBQP Register Allocator"; }
 
   /// PBQP analysis usage.
   void getAnalysisUsage(AnalysisUsage &au) const override;