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Auto-upgrade free instructions to calls to the builtin free function.

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Update all analysis passes and transforms to treat free calls just like FreeInst.
Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84987 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Victor Hernandez
2009-10-24 04:23:03 +00:00
parent 5a850beb2e
commit 66284e063a
30 changed files with 169 additions and 269 deletions
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8
lib/Analysis/MemoryDependenceAnalysis.cpp
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@@ -118,6 +118,10 @@ getCallSiteDependencyFrom(CallSite CS, bool isReadOnlyCall,
// FreeInsts erase the entire structure
PointerSize = ~0ULL;
} else if (isFreeCall(Inst)) {
Pointer = Inst->getOperand(0);
// calls to free() erase the entire structure
PointerSize = ~0ULL;
} else if (isa<CallInst>(Inst) || isa<InvokeInst>(Inst)) {
// Debug intrinsics don't cause dependences.
if (isa<DbgInfoIntrinsic>(Inst)) continue;
@@ -314,6 +318,10 @@ MemDepResult MemoryDependenceAnalysis::getDependency(Instruction *QueryInst) {
MemPtr = LI->getPointerOperand();
MemSize = AA->getTypeStoreSize(LI->getType());
}
} else if (isFreeCall(QueryInst)) {
MemPtr = QueryInst->getOperand(0);
// calls to free() erase the entire structure, not just a field.
MemSize = ~0UL;
} else if (isa<CallInst>(QueryInst) || isa<InvokeInst>(QueryInst)) {
CallSite QueryCS = CallSite::get(QueryInst);
bool isReadOnly = AA->onlyReadsMemory(QueryCS);