[llvm] r257845 - rangify; NFCI
Mehdi Amini via llvm-commits
llvm-commits at lists.llvm.org
Thu Jan 14 16:13:46 PST 2016
Hi Sanjay,
Thanks for all the cleanup commits recently, appreciated!
I often lack courage to tackle it :)
—
Mehdi
> On Jan 14, 2016, at 4:08 PM, Sanjay Patel via llvm-commits <llvm-commits at lists.llvm.org> wrote:
>
> Author: spatel
> Date: Thu Jan 14 18:08:10 2016
> New Revision: 257845
>
> URL: http://llvm.org/viewvc/llvm-project?rev=257845&view=rev
> Log:
> rangify; NFCI
>
> Modified:
> llvm/trunk/lib/Analysis/LoopInfo.cpp
>
> Modified: llvm/trunk/lib/Analysis/LoopInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/LoopInfo.cpp?rev=257845&r1=257844&r2=257845&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Analysis/LoopInfo.cpp (original)
> +++ llvm/trunk/lib/Analysis/LoopInfo.cpp Thu Jan 14 18:08:10 2016
> @@ -92,8 +92,8 @@ bool Loop::makeLoopInvariant(Instruction
> InsertPt = Preheader->getTerminator();
> }
> // Don't hoist instructions with loop-variant operands.
> - for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i)
> - if (!makeLoopInvariant(I->getOperand(i), Changed, InsertPt))
> + for (Value *Operand : I->operands())
> + if (!makeLoopInvariant(Operand, Changed, InsertPt))
> return false;
>
> // Hoist.
> @@ -146,16 +146,15 @@ PHINode *Loop::getCanonicalInductionVari
> }
>
> bool Loop::isLCSSAForm(DominatorTree &DT) const {
> - for (block_iterator BI = block_begin(), E = block_end(); BI != E; ++BI) {
> - BasicBlock *BB = *BI;
> - for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E;++I) {
> + for (BasicBlock *BB : this->blocks()) {
> + for (Instruction &I : *BB) {
> // Tokens can't be used in PHI nodes and live-out tokens prevent loop
> // optimizations, so for the purposes of considered LCSSA form, we
> // can ignore them.
> - if (I->getType()->isTokenTy())
> + if (I.getType()->isTokenTy())
> continue;
>
> - for (Use &U : I->uses()) {
> + for (Use &U : I.uses()) {
> Instruction *UI = cast<Instruction>(U.getUser());
> BasicBlock *UserBB = UI->getParent();
> if (PHINode *P = dyn_cast<PHINode>(UI))
> @@ -195,11 +194,11 @@ bool Loop::isLoopSimplifyForm() const {
> bool Loop::isSafeToClone() const {
> // Return false if any loop blocks contain indirectbrs, or there are any calls
> // to noduplicate functions.
> - for (Loop::block_iterator I = block_begin(), E = block_end(); I != E; ++I) {
> - if (isa<IndirectBrInst>((*I)->getTerminator()))
> + for (BasicBlock *BB : this->blocks()) {
> + if (isa<IndirectBrInst>(BB->getTerminator()))
> return false;
>
> - if (const InvokeInst *II = dyn_cast<InvokeInst>((*I)->getTerminator())) {
> + if (const InvokeInst *II = dyn_cast<InvokeInst>(BB->getTerminator())) {
> if (II->cannotDuplicate())
> return false;
> // Return false if any loop blocks contain invokes to EH-pads other than
> @@ -208,13 +207,12 @@ bool Loop::isSafeToClone() const {
> if (FirstNonPHI->isEHPad() && !isa<LandingPadInst>(FirstNonPHI))
> return false;
> }
> -
> - for (BasicBlock::iterator BI = (*I)->begin(), BE = (*I)->end(); BI != BE; ++BI) {
> - if (const CallInst *CI = dyn_cast<CallInst>(BI)) {
> + for (Instruction &I : *BB) {
> + if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
> if (CI->cannotDuplicate())
> return false;
> }
> - if (BI->getType()->isTokenTy() && BI->isUsedOutsideOfBlock(*I))
> + if (I.getType()->isTokenTy() && I.isUsedOutsideOfBlock(BB))
> return false;
> }
> }
> @@ -229,13 +227,13 @@ MDNode *Loop::getLoopID() const {
> // Go through each predecessor of the loop header and check the
> // terminator for the metadata.
> BasicBlock *H = getHeader();
> - for (block_iterator I = block_begin(), IE = block_end(); I != IE; ++I) {
> - TerminatorInst *TI = (*I)->getTerminator();
> + for (BasicBlock *BB : this->blocks()) {
> + TerminatorInst *TI = BB->getTerminator();
> MDNode *MD = nullptr;
>
> // Check if this terminator branches to the loop header.
> - for (unsigned i = 0, ie = TI->getNumSuccessors(); i != ie; ++i) {
> - if (TI->getSuccessor(i) == H) {
> + for (BasicBlock *Successor : TI->successors()) {
> + if (Successor == H) {
> MD = TI->getMetadata(LoopMDName);
> break;
> }
> @@ -266,10 +264,10 @@ void Loop::setLoopID(MDNode *LoopID) con
> }
>
> BasicBlock *H = getHeader();
> - for (block_iterator I = block_begin(), IE = block_end(); I != IE; ++I) {
> - TerminatorInst *TI = (*I)->getTerminator();
> - for (unsigned i = 0, ie = TI->getNumSuccessors(); i != ie; ++i) {
> - if (TI->getSuccessor(i) == H)
> + for (BasicBlock *BB : this->blocks()) {
> + TerminatorInst *TI = BB->getTerminator();
> + for (BasicBlock *Successor : TI->successors()) {
> + if (Successor == H)
> TI->setMetadata(LoopMDName, LoopID);
> }
> }
> @@ -286,11 +284,9 @@ bool Loop::isAnnotatedParallel() const {
> // dependencies (thus converted the loop back to a sequential loop), check
> // that all the memory instructions in the loop contain parallelism metadata
> // that point to the same unique "loop id metadata" the loop branch does.
> - for (block_iterator BB = block_begin(), BE = block_end(); BB != BE; ++BB) {
> - for (BasicBlock::iterator II = (*BB)->begin(), EE = (*BB)->end();
> - II != EE; II++) {
> -
> - if (!II->mayReadOrWriteMemory())
> + for (BasicBlock *BB : this->blocks()) {
> + for (Instruction &I : *BB) {
> + if (!I.mayReadOrWriteMemory())
> continue;
>
> // The memory instruction can refer to the loop identifier metadata
> @@ -298,14 +294,14 @@ bool Loop::isAnnotatedParallel() const {
> // nested parallel loops). The loop identifier metadata refers to
> // itself so we can check both cases with the same routine.
> MDNode *loopIdMD =
> - II->getMetadata(LLVMContext::MD_mem_parallel_loop_access);
> + I.getMetadata(LLVMContext::MD_mem_parallel_loop_access);
>
> if (!loopIdMD)
> return false;
>
> bool loopIdMDFound = false;
> - for (unsigned i = 0, e = loopIdMD->getNumOperands(); i < e; ++i) {
> - if (loopIdMD->getOperand(i) == desiredLoopIdMetadata) {
> + for (const MDOperand &MDOp : loopIdMD->operands()) {
> + if (MDOp == desiredLoopIdMetadata) {
> loopIdMDFound = true;
> break;
> }
> @@ -323,10 +319,9 @@ bool Loop::hasDedicatedExits() const {
> // within the loop.
> SmallVector<BasicBlock *, 4> ExitBlocks;
> getExitBlocks(ExitBlocks);
> - for (unsigned i = 0, e = ExitBlocks.size(); i != e; ++i)
> - for (pred_iterator PI = pred_begin(ExitBlocks[i]),
> - PE = pred_end(ExitBlocks[i]); PI != PE; ++PI)
> - if (!contains(*PI))
> + for (BasicBlock *BB : ExitBlocks)
> + for (BasicBlock *Predecessor : predecessors(BB))
> + if (!contains(Predecessor))
> return false;
> // All the requirements are met.
> return true;
> @@ -338,42 +333,38 @@ Loop::getUniqueExitBlocks(SmallVectorImp
> "getUniqueExitBlocks assumes the loop has canonical form exits!");
>
> SmallVector<BasicBlock *, 32> switchExitBlocks;
> -
> - for (block_iterator BI = block_begin(), BE = block_end(); BI != BE; ++BI) {
> -
> - BasicBlock *current = *BI;
> + for (BasicBlock *BB : this->blocks()) {
> switchExitBlocks.clear();
> -
> - for (succ_iterator I = succ_begin(*BI), E = succ_end(*BI); I != E; ++I) {
> - // If block is inside the loop then it is not a exit block.
> - if (contains(*I))
> + for (BasicBlock *Successor : successors(BB)) {
> + // If block is inside the loop then it is not an exit block.
> + if (contains(Successor))
> continue;
>
> - pred_iterator PI = pred_begin(*I);
> + pred_iterator PI = pred_begin(Successor);
> BasicBlock *firstPred = *PI;
>
> // If current basic block is this exit block's first predecessor
> // then only insert exit block in to the output ExitBlocks vector.
> // This ensures that same exit block is not inserted twice into
> // ExitBlocks vector.
> - if (current != firstPred)
> + if (BB != firstPred)
> continue;
>
> // If a terminator has more then two successors, for example SwitchInst,
> // then it is possible that there are multiple edges from current block
> // to one exit block.
> - if (std::distance(succ_begin(current), succ_end(current)) <= 2) {
> - ExitBlocks.push_back(*I);
> + if (std::distance(succ_begin(BB), succ_end(BB)) <= 2) {
> + ExitBlocks.push_back(Successor);
> continue;
> }
>
> // In case of multiple edges from current block to exit block, collect
> // only one edge in ExitBlocks. Use switchExitBlocks to keep track of
> // duplicate edges.
> - if (std::find(switchExitBlocks.begin(), switchExitBlocks.end(), *I)
> + if (std::find(switchExitBlocks.begin(), switchExitBlocks.end(), Successor)
> == switchExitBlocks.end()) {
> - switchExitBlocks.push_back(*I);
> - ExitBlocks.push_back(*I);
> + switchExitBlocks.push_back(Successor);
> + ExitBlocks.push_back(Successor);
> }
> }
> }
>
>
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
More information about the llvm-commits
mailing list