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Convert to new simpler pass itf

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@880 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2001-10-18 05:27:33 +00:00
parent a36941c069
commit 42c9c2cce4
3 changed files with 17 additions and 8 deletions
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14
lib/Transforms/Utils/LowerAllocations.cpp
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@@ -19,7 +19,8 @@
//
// This function is always successful.
//
bool LowerAllocations::doPassInitializationVirt(Module *M) {
bool LowerAllocations::doPassInitialization(Module *M) {
bool Changed = false;
const MethodType *MallocType =
MethodType::get(PointerType::get(Type::UByteTy),
vector<const Type*>(1, Type::UIntTy), false);
@@ -31,6 +32,7 @@ bool LowerAllocations::doPassInitializationVirt(Module *M) {
MallocMeth = cast<Method>(V); // Yup, got it
} else { // Nope, add one
M->getMethodList().push_back(MallocMeth = new Method(MallocType, "malloc"));
Changed = true;
}
const MethodType *FreeType =
@@ -43,15 +45,17 @@ bool LowerAllocations::doPassInitializationVirt(Module *M) {
FreeMeth = cast<Method>(V); // Yup, got it
} else { // Nope, add one
M->getMethodList().push_back(FreeMeth = new Method(FreeType, "free"));
Changed = true;
}
return false; // Always successful
return Changed; // Always successful
}
// doPerMethodWork - This method does the actual work of converting
// instructions over, assuming that the pass has already been initialized.
//
bool LowerAllocations::doPerMethodWorkVirt(Method *M) {
bool LowerAllocations::doPerMethodWork(Method *M) {
bool Changed = false;
assert(MallocMeth && FreeMeth && M && "Pass not initialized!");
// Loop over all of the instructions, looking for malloc or free instructions
@@ -97,6 +101,7 @@ bool LowerAllocations::doPerMethodWorkVirt(Method *M) {
// Replace all uses of the old malloc inst with the cast inst
MI->replaceAllUsesWith(MCast);
delete MI; // Delete the malloc inst
Changed = true;
} else if (FreeInst *FI = dyn_cast<FreeInst>(*(BBIL.begin()+i))) {
BBIL.remove(BB->getInstList().begin()+i);
@@ -112,10 +117,11 @@ bool LowerAllocations::doPerMethodWorkVirt(Method *M) {
// Delete the old free instruction
delete FI;
Changed = true;
}
}
}
return false; // Always successful
return Changed;
}