minor enhancement to llvm::isFreeCall API: return CallInst; no functional change

llvm-svn: 106686

1 files changed, 8 insertions, 8 deletions

diff --git a/llvm/lib/Analysis/MemoryBuiltins.cpp b/llvm/lib/Analysis/MemoryBuiltins.cpp
index 8150baf..1ab18ca 100644
--- a/llvm/lib/Analysis/MemoryBuiltins.cpp
+++ b/llvm/lib/Analysis/MemoryBuiltins.cpp
@@ -183,25 +183,25 @@ Value *llvm::getMallocArraySize(CallInst *CI, const TargetData *TD,
 //  free Call Utility Functions.
 //
 
-/// isFreeCall - Returns true if the value is a call to the builtin free()
-bool llvm::isFreeCall(const Value *I) {
+/// isFreeCall - Returns non-null if the value is a call to the builtin free()
+const CallInst *llvm::isFreeCall(const Value *I) {
   const CallInst *CI = dyn_cast<CallInst>(I);
   if (!CI)
-    return false;
+    return 0;
   Function *Callee = CI->getCalledFunction();
   if (Callee == 0 || !Callee->isDeclaration() || Callee->getName() != "free")
-    return false;
+    return 0;
 
   // Check free prototype.
   // FIXME: workaround for PR5130, this will be obsolete when a nobuiltin 
   // attribute will exist.
   const FunctionType *FTy = Callee->getFunctionType();
   if (!FTy->getReturnType()->isVoidTy())
-    return false;
+    return 0;
   if (FTy->getNumParams() != 1)
-    return false;
+    return 0;
   if (FTy->param_begin()->get() != Type::getInt8PtrTy(Callee->getContext()))
-    return false;
+    return 0;
 
-  return true;
+  return CI;
 }