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Add support for free instructions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15197 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-07-25 07:57:37 +00:00
parent c25b55a5b2
commit 5c88260f70
2 changed files with 21 additions and 2 deletions
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3
include/llvm/Analysis/AliasSetTracker.h
View File

@ -27,6 +27,7 @@ namespace llvm {
class AliasAnalysis;
class LoadInst;
class StoreInst;
class FreeInst;
class AliasSetTracker;
class AliasSet;
@ -263,6 +264,7 @@ public:
///
bool add(LoadInst *LI);
bool add(StoreInst *SI);
bool add(FreeInst *FI);
bool add(CallSite CS); // Call/Invoke instructions
bool add(CallInst *CI) { return add(CallSite(CI)); }
bool add(InvokeInst *II) { return add(CallSite(II)); }
@ -275,6 +277,7 @@ public:
/// alias sets were eliminated.
bool remove(LoadInst *LI);
bool remove(StoreInst *SI);
bool remove(FreeInst *FI);
bool remove(CallSite CS);
bool remove(CallInst *CI) { return remove(CallSite(CI)); }
bool remove(InvokeInst *II) { return remove(CallSite(II)); }

20
lib/Analysis/AliasSetTracker.cpp
View File

@ -233,6 +233,13 @@ bool AliasSetTracker::add(StoreInst *SI) {
return NewPtr;
}
bool AliasSetTracker::add(FreeInst *FI) {
bool NewPtr;
AliasSet &AS = addPointer(FI->getOperand(0), ~0,
AliasSet::Mods, NewPtr);
return NewPtr;
}
bool AliasSetTracker::add(CallSite CS) {
bool NewPtr;
@ -262,6 +269,8 @@ bool AliasSetTracker::add(Instruction *I) {
return add(CI);
else if (InvokeInst *II = dyn_cast<InvokeInst>(I))
return add(II);
else if (FreeInst *FI = dyn_cast<FreeInst>(I))
return add(FI);
return true;
}
@ -326,6 +335,13 @@ bool AliasSetTracker::remove(StoreInst *SI) {
return true;
}
bool AliasSetTracker::remove(FreeInst *FI) {
AliasSet *AS = findAliasSetForPointer(FI->getOperand(0), ~0);
if (!AS) return false;
remove(*AS);
return true;
}
bool AliasSetTracker::remove(CallSite CS) {
if (Function *F = CS.getCalledFunction())
if (AA.doesNotAccessMemory(F))
@ -345,8 +361,8 @@ bool AliasSetTracker::remove(Instruction *I) {
return remove(SI);
else if (CallInst *CI = dyn_cast<CallInst>(I))
return remove(CI);
else if (InvokeInst *II = dyn_cast<InvokeInst>(I))
return remove(II);
else if (FreeInst *FI = dyn_cast<FreeInst>(I))
return remove(FI);
return true;
}