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CodeGen: constify and use range loop for SSP

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224683 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2014-12-20 21:37:51 +00:00
parent fc317b6e7b
commit 281f568720
1 changed files with 4 additions and 8 deletions
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12
lib/CodeGen/StackProtector.cpp
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@@ -212,20 +212,16 @@ bool StackProtector::RequiresStackProtector() {
Attribute::StackProtect)) Attribute::StackProtect))
return false; return false;
for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I) { for (const BasicBlock &BB : *F) {
BasicBlock *BB = I; for (const Instruction &I : BB) {
if (const AllocaInst *AI = dyn_cast<AllocaInst>(&I)) {
for (BasicBlock::iterator II = BB->begin(), IE = BB->end(); II != IE;
++II) {
if (AllocaInst *AI = dyn_cast<AllocaInst>(II)) {
if (AI->isArrayAllocation()) { if (AI->isArrayAllocation()) {
// SSP-Strong: Enable protectors for any call to alloca, regardless // SSP-Strong: Enable protectors for any call to alloca, regardless
// of size. // of size.
if (Strong) if (Strong)
return true; return true;
if (const ConstantInt *CI = if (const auto *CI = dyn_cast<ConstantInt>(AI->getArraySize())) {
dyn_cast<ConstantInt>(AI->getArraySize())) {
if (CI->getLimitedValue(SSPBufferSize) >= SSPBufferSize) { if (CI->getLimitedValue(SSPBufferSize) >= SSPBufferSize) {
// A call to alloca with size >= SSPBufferSize requires // A call to alloca with size >= SSPBufferSize requires
// stack protectors. // stack protectors.