diff --git a/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp b/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp
index b854633..9d23173 100644
--- a/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp
+++ b/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp
@@ -703,7 +703,7 @@
     BuildMI(*MBB, IP, PPC::LOADHiAddr, 2, TmpReg)
       .addReg(getGlobalBaseReg(MBB, IP)).addGlobalAddress(GV);
 
-    if (GV->hasWeakLinkage() || GV->isExternal() || dyn_cast<Function>(GV)) {
+    if (GV->hasWeakLinkage() || GV->isExternal() || isa<Function>(GV)) {
       BuildMI(*MBB, IP, PPC::LWZ, 2, R).addGlobalAddress(GV).addReg(TmpReg);
     } else {
       BuildMI(*MBB, IP, PPC::LA, 2, R).addReg(TmpReg).addGlobalAddress(GV);