LLVM: lib/Transforms/Utils/LoopUtils.cpp File Reference (original) (raw)

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Macros
#define	DEBUG_TYPE "loop-utils"

Functions
static MDNode *	createStringMetadata (Loop *TheLoop, StringRef Name, unsigned V)
	Create MDNode for input string.
static BranchInst *	getExpectedExitLoopLatchBranch (Loop *L)
	Checks if L has an exiting latch branch.
static raw_ostream &	operator<< (raw_ostream &OS, DbgLoop D)
static std::optional< unsigned >	estimateLoopTripCount (Loop *L)
static bool	hasHardUserWithinLoop (const Loop L, const Instruction I)
static bool	canLoopBeDeleted (Loop *L, SmallVector< RewritePhi, 8 > &RewritePhiSet)
static bool	checkIsIndPhi (PHINode Phi, Loop L, ScalarEvolution *SE, InductionDescriptor &ID)
	Checks if it is safe to call InductionDescriptor::isInductionPHI for Phi, and returns true if this Phi is an induction phi in the loop.
static PointerBounds	expandBounds (const RuntimeCheckingPtrGroup CG, Loop TheLoop, Instruction *Loc, SCEVExpander &Exp, bool HoistRuntimeChecks)
	Expand code for the lower and upper bound of the pointer group CG in TheLoop.
static SmallVector< std::pair< PointerBounds, PointerBounds >, 4 >	expandBounds (const SmallVectorImpl< RuntimePointerCheck > &PointerChecks, Loop L, Instruction Loc, SCEVExpander &Exp, bool HoistRuntimeChecks)
	Turns a collection of checks into a collection of expanded upper and lower bounds for both pointers in the check.

◆ DEBUG_TYPE

#define DEBUG_TYPE "loop-utils"

◆ canLoopBeDeleted()

◆ checkIsIndPhi()

◆ createStringMetadata()

◆ estimateLoopTripCount()

std::optional< unsigned > estimateLoopTripCount ( Loop * L)	static

◆ expandBounds() [1/2]

Expand code for the lower and upper bound of the pointer group CG in TheLoop.

Returns

the values for the bounds.

Definition at line 2006 of file LoopUtils.cpp.

References llvm::RuntimeCheckingPtrGroup::AddressSpace, llvm::ScalarEvolution::applyLoopGuards(), llvm::cast(), llvm::dbgs(), llvm::PointerType::get(), llvm::ScalarEvolution::getExitCount(), llvm::LoopBase< BlockT, LoopT >::getLoopLatch(), llvm::LoopBase< BlockT, LoopT >::getParentLoop(), llvm::SCEV::getType(), High, llvm::RuntimeCheckingPtrGroup::High, HoistRuntimeChecks, llvm::isa(), llvm::Type::isIntegerTy(), llvm::ScalarEvolution::isKnownNonNegative(), LLVM_DEBUG, llvm::RuntimeCheckingPtrGroup::Low, llvm::Low, and llvm::RuntimeCheckingPtrGroup::NeedsFreeze.

Referenced by llvm::addRuntimeChecks(), and expandBounds().

◆ expandBounds() [2/2]

◆ getExpectedExitLoopLatchBranch()

◆ hasHardUserWithinLoop()

◆ operator<<()

◆ LLVMLoopDisableLICM

const char* LLVMLoopDisableLICM = "llvm.licm.disable"	static

◆ LLVMLoopDisableNonforced

const char* LLVMLoopDisableNonforced = "llvm.loop.disable_nonforced"	static