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[PM/AA] Cleanup some loops to be range-based. NFC.

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llvm-svn: 242275
This commit is contained in:
Chandler Carruth 2015-07-15 08:09:23 +00:00
parent 4f9907e752
commit 3ce7d7f488
1 changed files with 19 additions and 20 deletions
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39
lib/Analysis/IPA/GlobalsModRef.cpp
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@ -207,35 +207,34 @@ Pass *llvm::createGlobalsModRefPass() { return new GlobalsModRef(); }
/// and record the functions that they are used directly in.
void GlobalsModRef::AnalyzeGlobals(Module &M) {
std::vector<Function *> Readers, Writers;
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
if (I->hasLocalLinkage()) {
if (!AnalyzeUsesOfPointer(I, Readers, Writers)) {
for (Function &F : M)
if (F.hasLocalLinkage()) {
if (!AnalyzeUsesOfPointer(&F, Readers, Writers)) {
// Remember that we are tracking this global.
NonAddressTakenGlobals.insert(I);
NonAddressTakenGlobals.insert(&F);
++NumNonAddrTakenFunctions;
}
Readers.clear();
Writers.clear();
}
for (Module::global_iterator I = M.global_begin(), E = M.global_end(); I != E;
++I)
if (I->hasLocalLinkage()) {
if (!AnalyzeUsesOfPointer(I, Readers, Writers)) {
for (GlobalVariable &GV : M.globals())
if (GV.hasLocalLinkage()) {
if (!AnalyzeUsesOfPointer(&GV, Readers, Writers)) {
// Remember that we are tracking this global, and the mod/ref fns
NonAddressTakenGlobals.insert(I);
NonAddressTakenGlobals.insert(&GV);
for (unsigned i = 0, e = Readers.size(); i != e; ++i)
FunctionInfo[Readers[i]].GlobalInfo[I] |= Ref;
for (Function *Reader : Readers)
FunctionInfo[Reader].GlobalInfo[&GV] |= Ref;
if (!I->isConstant()) // No need to keep track of writers to constants
for (unsigned i = 0, e = Writers.size(); i != e; ++i)
FunctionInfo[Writers[i]].GlobalInfo[I] |= Mod;
if (!GV.isConstant()) // No need to keep track of writers to constants
for (Function *Writer : Writers)
FunctionInfo[Writer].GlobalInfo[&GV] |= Mod;
++NumNonAddrTakenGlobalVars;
// If this global holds a pointer type, see if it is an indirect global.
if (I->getType()->getElementType()->isPointerTy() &&
AnalyzeIndirectGlobalMemory(I))
if (GV.getType()->getElementType()->isPointerTy() &&
AnalyzeIndirectGlobalMemory(&GV))
++NumIndirectGlobalVars;
}
Readers.clear();
@ -370,8 +369,8 @@ void GlobalsModRef::AnalyzeCallGraph(CallGraph &CG, Module &M) {
if (!SCC[0]->getFunction()) {
// Calls externally - can't say anything useful. Remove any existing
// function records (may have been created when scanning globals).
for (unsigned i = 0, e = SCC.size(); i != e; ++i)
FunctionInfo.erase(SCC[i]->getFunction());
for (auto *Node : SCC)
FunctionInfo.erase(Node->getFunction());
continue;
}
@ -434,8 +433,8 @@ void GlobalsModRef::AnalyzeCallGraph(CallGraph &CG, Module &M) {
// If we can't say anything useful about this SCC, remove all SCC functions
// from the FunctionInfo map.
if (KnowNothing) {
for (unsigned i = 0, e = SCC.size(); i != e; ++i)
FunctionInfo.erase(SCC[i]->getFunction());
for (auto *Node : SCC)
FunctionInfo.erase(Node->getFunction());
continue;
}