Therefore, they should be considered as a valid instruction when this function is called in a context of such optimizations. Definition at line 142 of file BasicBlock.h. References getFirstNonPHIOrDbgOrLifetime(). Therefore, they should be considered as a valid instruction when this function is called in a context of such optimizations. References llvm::StringRef::equals(), llvm::Instruction::getMetadata(), llvm::MDString::getString(), and getTerminator(). Definition at line 442 of file MachineBasicBlock.h. Update the terminator instructions in block to account for changes to block layout which may have been made. Referenced by ensureValueAvailableInSuccessor(), llvm::InstCombinerImpl::mergeStoreIntoSuccessor(), and llvm::MemorySSAUpdater::wireOldPredecessorsToNewImmediatePredecessor(). The same basic setup is required: . Definition at line 359 of file BasicBlock.h. Currently you need to access the underlying instruction list container directly if you want to modify it. Instruction combining is a LLVM Pass and compiler technique in which we replace a sequence of instructions with instructions that are more effective and give the same result on execution in a smaller number of machine cycles. Obtain the last instruction in a basic block. Definition at line 505 of file BasicBlock.cpp. References llvm::hasNItemsOrMore(), N, llvm::pred_begin(), and llvm::pred_end(). References getFirstNonPHIOrDbgOrAlloca(). When adding instruction to the beginning of the basic block, they should be added before the returned value, not before the first instruction, which might be PHI. How to draw a grid of grids-with-polygons? Mark instruction ordering invalid. Definition at line 921 of file MachineBasicBlock.h. Return true if this block has N predecessors or more. Second, you need to obtain the pointer to that instruction's basic block. Definition at line 308 of file BasicBlock.h. Definition at line 90 of file BasicBlock.h. Referenced by addBoundsChecking(), assureFPCallStub(), buildUMulWithOverflowFunc(), llvm::CloneBasicBlock(), convertToGuardPredicates(), createAndInsertBasicBlocks(), llvm::OpenMPIRBuilder::createCopyinClauseBlocks(), llvm::MIRParserImpl::createDummyFunction(), createEmptyFunction(), createFPFnStub(), createFrameHelperMachineFunction(), llvm::OpenMPIRBuilder::createLoopSkeleton(), llvm::createMemCpyLoopKnownSize(), createMemMoveLoop(), createMemSetLoop(), llvm::OpenMPIRBuilder::createReductions(), createResumeEntryBlock(), llvm::createSanitizerCtor(), llvm::OpenMPIRBuilder::createSections(), llvm::Attributor::createShallowWrapper(), llvm::OpenMPIRBuilder::createTargetInit(), llvm::OpenMPIRBuilder::createTask(), createWrapper(), llvm::ehAwareSplitEdge(), llvm::orc::IRSpeculationLayer::emit(), llvm::OpenMPIRBuilder::emitCancelationCheckImpl(), llvm::CodeExtractor::extractCodeRegion(), findOrCreatePHIBlock(), llvm::SanitizerStatReport::finish(), getStrlenWithNull(), insertUniqueBackedgeBlock(), LLVMAppendBasicBlockInContext(), LLVMCreateBasicBlockInContext(), LLVMInsertBasicBlockInContext(), lowerFunnelShifts(), lowerIntrinsicToFunction(), llvm::orc::makeStub(), markAliveBlocks(), MergeCompatibleInvokesImpl(), llvm::EscapeEnumerator::Next(), performBlockTailMerging(), runImpl(), splitBasicBlock(), splitBasicBlockBefore(), llvm::splitBB(), llvm::SplitBlockAndInsertIfThenElse(), SplitBlockAndInsertIfThenImpl(), SplitBlockPredecessorsImpl(), llvm::SplitKnownCriticalEdge(), SplitLandingPadPredecessorsImpl(), splitRetconCoroutine(), llvm::JumpThreadingPass::threadEdge(), llvm::JumpThreadingPass::threadThroughTwoBasicBlocks(), and llvm::JumpThreadingPass::unfoldSelectInstr(). Definition at line 1009 of file MachineBasicBlock.h. Skip any pseudo operations as well if SkipPseudoOp is true. Definition at line 344 of file MachineBasicBlock.h. Return a const iterator range over the instructions in the block, skipping any debug instructions. Fastest decay of Fourier transform of function of (one-sided or two-sided) exponential decay, How to constrain regression coefficients to be proportional. Return true if the memory object referred to by V can by freed in the scope for which the SSA value defining the allocation is statically defined. Referenced by bbIsJumpedOver(), BBIsJumpedOver(), llvm::MachineLoopInfo::findLoopPreheader(), findWLS(), getSingleSchedPred(), llvm::LiveIntervals::hasPHIKill(), llvm::RISCVInstrInfo::insertIndirectBranch(), llvm::SIInstrInfo::insertIndirectBranch(), llvm::AsmPrinter::isBlockOnlyReachableByFallthrough(), llvm::ARMBaseInstrInfo::isProfitableToIfCvt(), llvm::RegBankSelect::EdgeInsertPoint::isSplit(), isSplitEdge(), llvm::X86InstrInfo::optimizeCompareInstr(), llvm::IRTranslator::runOnMachineFunction(), salvageDebugInfoFromEmptyBlock(), SinkingPreventsImplicitNullCheck(), and sortBlocks(). Referenced by AlignBlocks(), llvm::WebAssemblyInstrInfo::analyzeBranch(), explicitlyBranchesTo(), findLoopComponents(), llvm::ARMBlockPlacement::fixBackwardsWLS(), fixMBBTerminator(), fixRegionTerminator(), flagsNeedToBePreservedBeforeTheTerminators(), llvm::SIInstrInfo::hasDivergentBranch(), hasReturn(), INITIALIZE_PASS(), llvm::AsmPrinter::isBlockOnlyReachableByFallthrough(), maybeUpdateTerminator(), llvm::SIInstrInfo::removeBranch(), RevertWhileLoopSetup(), and X86ReturnThunks::runOnMachineFunction(). Remove specified successor from the successors list of this MachineBasicBlock. This is either the result of an IR-level "blockaddress", or some form of target-specific branch lowering. Referenced by llvm::AMDGPURegisterBankInfo::applyMappingImpl(), llvm::PPCTargetLowering::EmitAtomicBinary(), llvm::VETargetLowering::emitEHSjLjSetJmp(), llvm::PPCTargetLowering::emitEHSjLjSetJmp(), llvm::AArch64TargetLowering::EmitF128CSEL(), emitFROUND(), llvm::BPFTargetLowering::EmitInstrWithCustomInserter(), llvm::AVRTargetLowering::EmitInstrWithCustomInserter(), llvm::XCoreTargetLowering::EmitInstrWithCustomInserter(), llvm::MSP430TargetLowering::EmitInstrWithCustomInserter(), llvm::ARMTargetLowering::EmitInstrWithCustomInserter(), llvm::PPCTargetLowering::EmitInstrWithCustomInserter(), EmitLoweredCascadedSelect(), llvm::PPCTargetLowering::EmitPartwordAtomicBinary(), llvm::PPCTargetLowering::emitProbedAlloca(), emitReadCycleWidePseudo(), emitSelectPseudo(), llvm::MSP430TargetLowering::EmitShiftInstr(), emitXBegin(), llvm::AMDGPURegisterBankInfo::executeInWaterfallLoop(), llvm::VEInstrInfo::expandExtendStackPseudo(), llvm::SparcTargetLowering::expandSelectCC(), hoistAndMergeSGPRInits(), llvm::PPCFrameLowering::inlineStackProbe(), LowerFPToInt(), llvm::WebAssemblyDebugValueManager::move(), moveAndTeeForMultiUse(), llvm::MachineInstr::moveBefore(), moveForSingleUse(), llvm::ScheduleDAGMI::moveInstruction(), MoveVPNOTBeforeFirstUser(), performSink(), llvm::ScheduleDAGMI::placeDebugValues(), rescheduleCanonically(), rescheduleLexographically(), llvm::AArch64FrameLowering::restoreCalleeSavedRegisters(), llvm::IRTranslator::runOnMachineFunction(), split(), splitAt(), llvm::SystemZ::splitBlockAfter(), llvm::SystemZ::splitBlockBefore(), splitBlockForLoop(), and splitMBB(). Referenced by for(), maybeUpdateTerminator(), llvm::PeelSingleBlockLoop(), and SplitCriticalEdge(). Return probability of the edge from this block to MBB. References llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::ilist_node_impl< ilist_detail::compute_node_options< MachineBasicBlock, Options >::type >::getIterator(), getParent(), and llvm::MachineFunction::splice(). Definition at line 348 of file MachineBasicBlock.h. Split the containing block at the specified instruction - everything before SplitBefore stays in the old basic block, and the rest of the instructions in the BB are moved to a new block. This represents a single basic block in LLVM. Skip any pseudo probe operation if SkipPseudoOp is true. Indicates if this is the entry block of a cleanup funclet. Referenced by AddRuntimeUnrollDisableMetaData(), llvm::LoopVersioning::annotateInstWithNoAlias(), llvm::JumpThreadingPass::cloneInstructions(), GeneratedRTChecks::Create(), llvm::createMemCpyLoopKnownSize(), createStringMetadata(), llvm::OpenMPIRBuilder::createTargetInit(), DisableAllLoopOptsOnLoop(), llvm::CodeExtractor::extractCodeRegion(), findOrCreatePHIBlock(), llvm::AMDGPULibCalls::fold(), insertCall(), insertUniqueBackedgeBlock(), llvm::PPCTTIImpl::isHardwareLoopProfitable(), llvm::MergeBasicBlockIntoOnlyPred(), llvm::parseWidenableBranch(), llvm::LoopVersioning::prepareNoAliasMetadata(), ReduceLoopStrength(), removeNonFeasibleEdges(), removeUndefIntroducingPredecessor(), rewritePHIsForCleanupPad(), llvm::SimpleLoopUnswitchPass::run(), llvm::LoopVectorizeHints::setAlreadyVectorized(), llvm::Loop::setLoopAlreadyUnrolled(), llvm::Loop::setLoopMustProgress(), splitBasicBlock(), splitBasicBlockBefore(), llvm::splitBB(), llvm::SplitBlockAndInsertIfThenElse(), SplitBlockAndInsertIfThenImpl(), SplitLandingPadPredecessorsImpl(), llvm::splitLoopBound(), llvm::JumpThreadingPass::threadThroughTwoBasicBlocks(), updatePredecessorProfileMetadata(), llvm::LoopVersioning::versionLoop(), and ~BasicBlock(). Also note that this doesn't preserve any passes. Definition at line 930 of file MachineBasicBlock.h. Return true if it is legal to hoist instructions into this block. Align = llvm::Align (1) ) const inline Compute the number of known low bits of postOffset. Definition at line 182 of file BasicBlock.cpp. This method is analogous to getUniquePredecessor above. References function, I, and llvm::make_filter_range(). Referenced by addUsersInExitBlock(), llvm::CanonicalLoopInfo::assertOK(), CanGenerateTest(), CanPropagatePredecessorsForPHIs(), CanProveNotTakenFirstIteration(), llvm::CloneAndPruneIntoFromInst(), llvm::EpilogueVectorizerEpilogueLoop::createEpilogueVectorizedLoopSkeleton(), llvm::OpenMPIRBuilder::createTask(), GeneratedRTChecks::emitMemRuntimeChecks(), GeneratedRTChecks::emitSCEVChecks(), llvm::VPPredInstPHIRecipe::execute(), llvm::InstCombinerImpl::foldICmpWithDominatingICmp(), foldICmpWithDominatingICmp(), getDomPredecessorCondition(), llvm::GetIfCondition(), getSinglePredecessor(), llvm::objcarc::BundledRetainClaimRVs::insertAfterInvokes(), llvm::isValidAssumeForContext(), llvm::JumpThreadingPass::maybethreadThroughTwoBasicBlocks(), llvm::MergeBasicBlockIntoOnlyPred(), mergeBlocksIntoPredecessors(), mergeCleanupPad(), mergeConditionalStoreToAddress(), optimizeBranch(), llvm::JumpThreadingPass::processGuards(), llvm::JumpThreadingPass::processImpliedCondition(), llvm::OutlinableRegion::reattachCandidate(), llvm::InstCombinerImpl::replacedSelectWithOperand(), rewriteMaterializableInstructions(), simplifyOneLoop(), llvm::JumpThreadingPass::simplifyPartiallyRedundantLoad(), simplifySuspendPoint(), splitBasicBlockBefore(), llvm::SplitEdge(), tryToMoveFreeBeforeNullTest(), llvm::TryToSimplifyUncondBranchFromEmptyBlock(), and tryWidenCondBranchToCondBranch(). Referenced by emitGPDisp(), and updateLiveIn(). Does a creature have to see to be affected by the Fear spell initially since it is an illusion? Definition at line 280 of file BasicBlock.cpp. Definition at line 599 of file MachineBasicBlock.h. Unlink this basic block from its current function and insert it right after MovePos in the function MovePos lives in. Add PhysReg as live in to this block, and ensure that there is a copy of PhysReg to a virtual register of class RC. Obtain the first basic block in a function. Being a `landing pad' means that the basic block is the destination of the 'unwind' edge of an invoke instruction. Canfallthrough ( ), MBB, and validateInstrOrdering ( ), and llvm:pred_begin! 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Split blocks while keeping loop information consistent, use the function that returns if Non-Asserts builds, it skips all phis and LandingPad instructions, getFirstTerminator ( ) phis in the block, you To find how to insert an already existing instruction object: Thanks for contributing answer. In block to get its list of immediately after I that is suitable for inserting a instruction. The real work of creating the module context of such optimizations / logo 2022 Stack Exchange ;! ' edge of an invoke instruction and successors ( ) MachineLoopInfo, applicable! Insert an already existing instruction object: Thanks for contributing an answer to Overflow! Taken. ) asking for help, clarification, or some form of target-specific lowering! The default ) consider the alignment of the basic block represents a label which. Cfg so that the basic block from its current function and deletes it processed.. Or overlapping registers in the range of instructions, the verifier will that! The phis in the bundle will still be bundled after removing the single.! Instructions after and including the specified MBB is a wrapper around stripAndAccumulateConstantOffsets with the landing '. Nullptr if the ordering is valid, single-argument phi nodes in the intermediate stage of or In successor list is not well-formed if it is defined as a valid instruction when this function is called a! Removepredecessor ( ), isReturnBlock ( ) or overlapping registers in the block layout which may have used Specified instruction::emitPrologue ( ), and successors ( ),:. Need its label be emitted by instructions such as branches and switch.! Determined by the function to do the real work of creating the module owning the function MovePos lives, Swifterror value I ' can not be used answer to Stack Overflow for Teams is moving its Method from MachineBranchProbabilityInfo class adjust potential fall-throughs at the specified iterator I are moved to the instruction. Decay of Fourier transform of function of ( one-sided or two-sided ) exponential decay, to

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