Pull out repeated CI->getCalledFunction() calls. NFCI.

llvm-svn: 360070
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
index 3b874e4..cc0b6e0 100644
--- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -1075,7 +1075,8 @@
 /// Shrink double -> float functions.
 static Value *optimizeDoubleFP(CallInst *CI, IRBuilder<> &B,
                                bool isBinary, bool isPrecise = false) {
-  if (!CI->getType()->isDoubleTy() || !CI->getCalledFunction())
+  Function *CalleeFn = CI->getCalledFunction();
+  if (!CI->getType()->isDoubleTy() || !CalleeFn)
     return nullptr;
 
   // If not all the uses of the function are converted to float, then bail out.
@@ -1095,7 +1096,6 @@
   if (!V[0] || (isBinary && !V[1]))
     return nullptr;
 
-  Function *CalleeFn = CI->getCalledFunction();
   StringRef CalleeNm = CalleeFn->getName();
   AttributeList CalleeAt = CalleeFn->getAttributes();
   bool CalleeIn = CalleeFn->isIntrinsic();