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

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106686 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif
2010-06-23 21:51:12 +00:00
parent e3401c4fae
commit 02680f946b
2 changed files with 10 additions and 10 deletions
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4
include/llvm/Analysis/MemoryBuiltins.h
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@ -72,8 +72,8 @@ Value *getMallocArraySize(CallInst *CI, const TargetData *TD,
// free Call Utility Functions. // free Call Utility Functions.
// //
/// isFreeCall - Returns true if the value is a call to the builtin free() /// isFreeCall - Returns non-null if the value is a call to the builtin free()
bool isFreeCall(const Value *I); const CallInst *isFreeCall(const Value *I);
} // End llvm namespace } // End llvm namespace

16
lib/Analysis/MemoryBuiltins.cpp
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@ -183,25 +183,25 @@ Value *llvm::getMallocArraySize(CallInst *CI, const TargetData *TD,
// free Call Utility Functions. // free Call Utility Functions.
// //
/// isFreeCall - Returns true if the value is a call to the builtin free() /// isFreeCall - Returns non-null if the value is a call to the builtin free()
bool llvm::isFreeCall(const Value *I) { const CallInst *llvm::isFreeCall(const Value *I) {
const CallInst *CI = dyn_cast<CallInst>(I); const CallInst *CI = dyn_cast<CallInst>(I);
if (!CI) if (!CI)
return false; return 0;
Function *Callee = CI->getCalledFunction(); Function *Callee = CI->getCalledFunction();
if (Callee == 0 || !Callee->isDeclaration() || Callee->getName() != "free") if (Callee == 0 || !Callee->isDeclaration() || Callee->getName() != "free")
return false; return 0;
// Check free prototype. // Check free prototype.
// FIXME: workaround for PR5130, this will be obsolete when a nobuiltin // FIXME: workaround for PR5130, this will be obsolete when a nobuiltin
// attribute will exist. // attribute will exist.
const FunctionType *FTy = Callee->getFunctionType(); const FunctionType *FTy = Callee->getFunctionType();
if (!FTy->getReturnType()->isVoidTy()) if (!FTy->getReturnType()->isVoidTy())
return false; return 0;
if (FTy->getNumParams() != 1) if (FTy->getNumParams() != 1)
return false; return 0;
if (FTy->param_begin()->get() != Type::getInt8PtrTy(Callee->getContext())) if (FTy->param_begin()->get() != Type::getInt8PtrTy(Callee->getContext()))
return false; return 0;
return true; return CI;
} }