Refactor: Simplify boolean conditional return statements in lib/Target/PowerPC

Summary: Use clang-tidy to simplify boolean conditional return statements

Reviewers: uweigand, rafael, wschmidt

Subscribers: craig.topper, llvm-commits

Patch by Richard Thomson!

Differential Revision: http://reviews.llvm.org/D9984

llvm-svn: 256493
diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index a2d588c..1eaa811 100644
--- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -1612,10 +1612,7 @@
           return false;
         }
 
-        if (VRI.RLAmt != EffRLAmt)
-          return false;
-
-        return true;
+        return VRI.RLAmt == EffRLAmt;
       };
 
       for (auto &BG : BitGroups) {