minor enhancement to llvm::isFreeCall API: return CallInst; no functional change
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106686 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/MemoryBuiltins.cpp b/lib/Analysis/MemoryBuiltins.cpp
index 8150baf..1ab18ca 100644
--- a/lib/Analysis/MemoryBuiltins.cpp
+++ b/lib/Analysis/MemoryBuiltins.cpp
@@ -183,25 +183,25 @@
// 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;
}