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CodeGen: constify and use range loop for SSP 

Use range-based for loop and constify the iterators.  NFC.

llvm-svn: 224683
This commit is contained in:
Saleem Abdulrasool 2014-12-20 21:37:51 +00:00
parent 0fa832002c
commit 57b5fe57e3
1 changed files with 4 additions and 8 deletions
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12
llvm/lib/CodeGen/StackProtector.cpp
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@ -212,20 +212,16 @@ bool StackProtector::RequiresStackProtector() {
Attribute::StackProtect))
return false;
for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I) {
BasicBlock *BB = I;
for (BasicBlock::iterator II = BB->begin(), IE = BB->end(); II != IE;
++II) {
if (AllocaInst *AI = dyn_cast<AllocaInst>(II)) {
for (const BasicBlock &BB : *F) {
for (const Instruction &I : BB) {
if (const AllocaInst *AI = dyn_cast<AllocaInst>(&I)) {
if (AI->isArrayAllocation()) {
// SSP-Strong: Enable protectors for any call to alloca, regardless
// of size.
if (Strong)
return true;
if (const ConstantInt *CI =
dyn_cast<ConstantInt>(AI->getArraySize())) {
if (const auto *CI = dyn_cast<ConstantInt>(AI->getArraySize())) {
if (CI->getLimitedValue(SSPBufferSize) >= SSPBufferSize) {
// A call to alloca with size >= SSPBufferSize requires
// stack protectors.