Fix utf8 chars.

llvm-svn: 248259
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 882af75..61731f0 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -8704,7 +8704,7 @@
     // mfspr Rx,TBU # load from TBU
     // mfspr Ry,TB  # load from TB
     // mfspr Rz,TBU # load from TBU
-    // cmpw crX,Rx,Rz # check if ‘old’=’new’
+    // cmpw crX,Rx,Rz # check if 'old'='new'
     // bne readLoop   # branch if they're not equal
     // ...