SplitKit.h revision cfa7134a9c33c0c7f8dda359c89dc6763a258e07
114e8d71cc945034d4ee6e76be00e00f14efac62fAndrew Trick//===-------- SplitKit.cpp - Toolkit for splitting live ranges --*- C++ -*-===// 28ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// 38ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// The LLVM Compiler Infrastructure 48ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// 58ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// This file is distributed under the University of Illinois Open Source 68ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// License. See LICENSE.TXT for details. 78ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// 88ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen//===----------------------------------------------------------------------===// 98ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// 108ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// This file contains the SplitAnalysis class as well as mutator functions for 118ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// live range splitting. 128ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen// 138ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen//===----------------------------------------------------------------------===// 148ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 158ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen#include "llvm/ADT/SmallPtrSet.h" 168ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen#include "llvm/ADT/DenseMap.h" 17f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen#include "llvm/CodeGen/SlotIndexes.h" 188ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 198ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesennamespace llvm { 208ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 218ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesenclass LiveInterval; 228ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesenclass LiveIntervals; 23a17768f5822ab62bc18608e5ba473187bf726b84Jakob Stoklund Olesenclass LiveRangeEdit; 248ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesenclass MachineInstr; 258ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesenclass MachineLoop; 268ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesenclass MachineLoopInfo; 27f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesenclass MachineRegisterInfo; 286a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesenclass TargetInstrInfo; 29cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesenclass TargetRegisterInfo; 30f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesenclass VirtRegMap; 31f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesenclass VNInfo; 32532de3dc6ea98387368954c0ac0e07b0adca8b62Jakob Stoklund Olesenclass raw_ostream; 338ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 34e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen/// At some point we should just include MachineDominators.h: 35e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesenclass MachineDominatorTree; 36e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesentemplate <class NodeT> class DomTreeNodeBase; 37e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesentypedef DomTreeNodeBase<MachineBasicBlock> MachineDomTreeNode; 38e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen 39f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen/// SplitAnalysis - Analyze a LiveInterval, looking for live range splitting 40f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen/// opportunities. 418ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesenclass SplitAnalysis { 4208e93b14c37277ab40b835de340f89ba357d3332Jakob Stoklund Olesenpublic: 438ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen const MachineFunction &mf_; 448ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen const LiveIntervals &lis_; 458ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen const MachineLoopInfo &loops_; 466a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen const TargetInstrInfo &tii_; 478ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 488ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen // Instructions using the the current register. 498ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen typedef SmallPtrSet<const MachineInstr*, 16> InstrPtrSet; 508ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen InstrPtrSet usingInstrs_; 518ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 528ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen // The number of instructions using curli in each basic block. 538ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen typedef DenseMap<const MachineBasicBlock*, unsigned> BlockCountMap; 548ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen BlockCountMap usingBlocks_; 558ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 562dee7a527b083e259f9e826c57c1e5dab9540798Jakob Stoklund Olesen // The number of basic block using curli in each loop. 572dee7a527b083e259f9e826c57c1e5dab9540798Jakob Stoklund Olesen typedef DenseMap<const MachineLoop*, unsigned> LoopCountMap; 582dee7a527b083e259f9e826c57c1e5dab9540798Jakob Stoklund Olesen LoopCountMap usingLoops_; 598ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 60f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesenprivate: 61f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen // Current live interval. 62f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen const LiveInterval *curli_; 63f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen 648ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen // Sumarize statistics by counting instructions using curli_. 65abff28087fd6be8150ff0e69def7de7312b2f76bJakob Stoklund Olesen void analyzeUses(); 668ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 676a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen /// canAnalyzeBranch - Return true if MBB ends in a branch that can be 686a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen /// analyzed. 696a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen bool canAnalyzeBranch(const MachineBasicBlock *MBB); 706a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen 718ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesenpublic: 72f2c6e367c1c0d8797e62e58a3ccdb8cceee27987Jakob Stoklund Olesen SplitAnalysis(const MachineFunction &mf, const LiveIntervals &lis, 73f2c6e367c1c0d8797e62e58a3ccdb8cceee27987Jakob Stoklund Olesen const MachineLoopInfo &mli); 748ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 758ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// analyze - set curli to the specified interval, and analyze how it may be 768ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// split. 778ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen void analyze(const LiveInterval *li); 788ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 798ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// clear - clear all data structures so SplitAnalysis is ready to analyze a 808ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// new interval. 818ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen void clear(); 828ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 836a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen typedef SmallPtrSet<const MachineBasicBlock*, 16> BlockPtrSet; 842dee7a527b083e259f9e826c57c1e5dab9540798Jakob Stoklund Olesen typedef SmallPtrSet<const MachineLoop*, 16> LoopPtrSet; 856a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen 86532de3dc6ea98387368954c0ac0e07b0adca8b62Jakob Stoklund Olesen // Print a set of blocks with use counts. 87532de3dc6ea98387368954c0ac0e07b0adca8b62Jakob Stoklund Olesen void print(const BlockPtrSet&, raw_ostream&) const; 88532de3dc6ea98387368954c0ac0e07b0adca8b62Jakob Stoklund Olesen 896a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen // Sets of basic blocks surrounding a machine loop. 906a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen struct LoopBlocks { 916a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen BlockPtrSet Loop; // Blocks in the loop. 926a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen BlockPtrSet Preds; // Loop predecessor blocks. 936a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen BlockPtrSet Exits; // Loop exit blocks. 946a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen 956a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen void clear() { 966a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen Loop.clear(); 976a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen Preds.clear(); 986a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen Exits.clear(); 996a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen } 1006a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen }; 1016a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen 102532de3dc6ea98387368954c0ac0e07b0adca8b62Jakob Stoklund Olesen // Print loop blocks with use counts. 103532de3dc6ea98387368954c0ac0e07b0adca8b62Jakob Stoklund Olesen void print(const LoopBlocks&, raw_ostream&) const; 104532de3dc6ea98387368954c0ac0e07b0adca8b62Jakob Stoklund Olesen 1056a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen // Calculate the block sets surrounding the loop. 1066a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen void getLoopBlocks(const MachineLoop *Loop, LoopBlocks &Blocks); 1076a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen 1088ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// LoopPeripheralUse - how is a variable used in and around a loop? 1098ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// Peripheral blocks are the loop predecessors and exit blocks. 1108ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen enum LoopPeripheralUse { 1118ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen ContainedInLoop, // All uses are inside the loop. 1128ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen SinglePeripheral, // At most one instruction per peripheral block. 1138ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen MultiPeripheral, // Multiple instructions in some peripheral blocks. 1148ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen OutsideLoop // Uses outside loop periphery. 1158ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen }; 1168ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 1178ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// analyzeLoopPeripheralUse - Return an enum describing how curli_ is used in 1188ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// and around the Loop. 1196a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen LoopPeripheralUse analyzeLoopPeripheralUse(const LoopBlocks&); 1206a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen 1216a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen /// getCriticalExits - It may be necessary to partially break critical edges 1226a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen /// leaving the loop if an exit block has phi uses of curli. Collect the exit 1236a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen /// blocks that need special treatment into CriticalExits. 1246a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen void getCriticalExits(const LoopBlocks &Blocks, BlockPtrSet &CriticalExits); 1256a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen 1266a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen /// canSplitCriticalExits - Return true if it is possible to insert new exit 1276a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen /// blocks before the blocks in CriticalExits. 1286a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen bool canSplitCriticalExits(const LoopBlocks &Blocks, 1296a0dc079efe7acf7e71cc4c0948fe814f35ba091Jakob Stoklund Olesen BlockPtrSet &CriticalExits); 1308ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 1310960a650b7047373da25bee6ec2eb73889c3b7bbJakob Stoklund Olesen /// getCriticalPreds - Get the set of loop predecessors with critical edges to 1320960a650b7047373da25bee6ec2eb73889c3b7bbJakob Stoklund Olesen /// blocks outside the loop that have curli live in. We don't have to break 1330960a650b7047373da25bee6ec2eb73889c3b7bbJakob Stoklund Olesen /// these edges, but they do require special treatment. 1340960a650b7047373da25bee6ec2eb73889c3b7bbJakob Stoklund Olesen void getCriticalPreds(const LoopBlocks &Blocks, BlockPtrSet &CriticalPreds); 1350960a650b7047373da25bee6ec2eb73889c3b7bbJakob Stoklund Olesen 1368ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// getBestSplitLoop - Return the loop where curli may best be split to a 1378ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen /// separate register, or NULL. 1388ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen const MachineLoop *getBestSplitLoop(); 139f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen 140f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen /// getMultiUseBlocks - Add basic blocks to Blocks that may benefit from 141f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen /// having curli split to a new live interval. Return true if Blocks can be 142f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen /// passed to SplitEditor::splitSingleBlocks. 143f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen bool getMultiUseBlocks(BlockPtrSet &Blocks); 144fc412d85c46a8656361fe1e9197ea85922e2cd61Jakob Stoklund Olesen 145fc412d85c46a8656361fe1e9197ea85922e2cd61Jakob Stoklund Olesen /// getBlockForInsideSplit - If curli is contained inside a single basic block, 146fc412d85c46a8656361fe1e9197ea85922e2cd61Jakob Stoklund Olesen /// and it wou pay to subdivide the interval inside that block, return it. 147fc412d85c46a8656361fe1e9197ea85922e2cd61Jakob Stoklund Olesen /// Otherwise return NULL. The returned block can be passed to 148fc412d85c46a8656361fe1e9197ea85922e2cd61Jakob Stoklund Olesen /// SplitEditor::splitInsideBlock. 149fc412d85c46a8656361fe1e9197ea85922e2cd61Jakob Stoklund Olesen const MachineBasicBlock *getBlockForInsideSplit(); 1508ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen}; 1518ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 1521407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 1531407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// LiveIntervalMap - Map values from a large LiveInterval into a small 1541407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// interval that is a subset. Insert phi-def values as needed. This class is 1551407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// used by SplitEditor to create new smaller LiveIntervals. 1561407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// 1571407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// parentli_ is the larger interval, li_ is the subset interval. Every value 1581407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// in li_ corresponds to exactly one value in parentli_, and the live range 1591407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// of the value is contained within the live range of the parentli_ value. 1601407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen/// Values in parentli_ may map to any number of openli_ values, including 0. 1611407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesenclass LiveIntervalMap { 1621407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen LiveIntervals &lis_; 163d68f458244b9d9a6644a9550dd5cee60331c9e7dJakob Stoklund Olesen MachineDominatorTree &mdt_; 1641407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 1651407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen // The parent interval is never changed. 1661407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen const LiveInterval &parentli_; 1671407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 1681407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen // The child interval's values are fully contained inside parentli_ values. 1699ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen LiveInterval *li_; 1701407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 1711407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen typedef DenseMap<const VNInfo*, VNInfo*> ValueMap; 1721407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 1731407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen // Map parentli_ values to simple values in li_ that are defined at the same 1741407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen // SlotIndex, or NULL for parentli_ values that have complex li_ defs. 1751407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen // Note there is a difference between values mapping to NULL (complex), and 1761407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen // values not present (unknown/unmapped). 1771407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen ValueMap valueMap_; 1781407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 179e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen typedef std::pair<VNInfo*, MachineDomTreeNode*> LiveOutPair; 180e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen typedef DenseMap<MachineBasicBlock*,LiveOutPair> LiveOutMap; 181e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen 182e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // liveOutCache_ - Map each basic block where li_ is live out to the live-out 183e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // value and its defining block. One of these conditions shall be true: 184e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // 185e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // 1. !liveOutCache_.count(MBB) 186e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // 2. liveOutCache_[MBB].second.getNode() == MBB 187e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // 3. forall P in preds(MBB): liveOutCache_[P] == liveOutCache_[MBB] 188e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // 189e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // This is only a cache, the values can be computed as: 190e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // 191e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // VNI = li_->getVNInfoAt(lis_.getMBBEndIdx(MBB)) 192e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // Node = mbt_[lis_.getMBBFromIndex(VNI->def)] 193e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // 194e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen // The cache is also used as a visiteed set by mapValue(). 195e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen LiveOutMap liveOutCache_; 196e1dde7b05a83438eeba4bd83f8cf080f56d22c5bJakob Stoklund Olesen 1971407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesenpublic: 1981407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen LiveIntervalMap(LiveIntervals &lis, 199d68f458244b9d9a6644a9550dd5cee60331c9e7dJakob Stoklund Olesen MachineDominatorTree &mdt, 2009ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen const LiveInterval &parentli) 201d68f458244b9d9a6644a9550dd5cee60331c9e7dJakob Stoklund Olesen : lis_(lis), mdt_(mdt), parentli_(parentli), li_(0) {} 2029ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen 2039ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen /// reset - clear all data structures and start a new live interval. 2049ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen void reset(LiveInterval *); 2059ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen 2069ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen /// getLI - return the current live interval. 2079ca2aeb2d223d11fd01b0bb8f13fe7f3a969714dJakob Stoklund Olesen LiveInterval *getLI() const { return li_; } 2081407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 2091407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// defValue - define a value in li_ from the parentli_ value VNI and Idx. 2101407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// Idx does not have to be ParentVNI->def, but it must be contained within 2111407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// ParentVNI's live range in parentli_. 2121407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// Return the new li_ value. 2131407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen VNInfo *defValue(const VNInfo *ParentVNI, SlotIndex Idx); 2141407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 2151407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// mapValue - map ParentVNI to the corresponding li_ value at Idx. It is 2161407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// assumed that ParentVNI is live at Idx. 2171407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// If ParentVNI has not been defined by defValue, it is assumed that 2181407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// ParentVNI->def dominates Idx. 2191407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// If ParentVNI has been defined by defValue one or more times, a value that 2201407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// dominates Idx will be returned. This may require creating extra phi-def 2211407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// values and adding live ranges to li_. 2225fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// If simple is not NULL, *simple will indicate if ParentVNI is a simply 2235fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// mapped value. 2245fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen VNInfo *mapValue(const VNInfo *ParentVNI, SlotIndex Idx, bool *simple = 0); 2255fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen 226fc60d7729bb5b63b7d61e370e51bd05e9a18b8bcJakob Stoklund Olesen // extendTo - Find the last li_ value defined in MBB at or before Idx. The 227fc60d7729bb5b63b7d61e370e51bd05e9a18b8bcJakob Stoklund Olesen // parentli is assumed to be live at Idx. Extend the live range to include 228fc60d7729bb5b63b7d61e370e51bd05e9a18b8bcJakob Stoklund Olesen // Idx. Return the found VNInfo, or NULL. 229c95c1465fdba059f6cbf24d1d9fd84f442c60fe4Jakob Stoklund Olesen VNInfo *extendTo(const MachineBasicBlock *MBB, SlotIndex Idx); 230fc60d7729bb5b63b7d61e370e51bd05e9a18b8bcJakob Stoklund Olesen 2315fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// isMapped - Return true is ParentVNI is a known mapped value. It may be a 2325fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// simple 1-1 mapping or a complex mapping to later defs. 2335fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen bool isMapped(const VNInfo *ParentVNI) const { 2345fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen return valueMap_.count(ParentVNI); 2355fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen } 2365fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen 2375fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// isComplexMapped - Return true if ParentVNI has received new definitions 2385fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// with defValue. 2395fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen bool isComplexMapped(const VNInfo *ParentVNI) const; 2405fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen 2415fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen // addSimpleRange - Add a simple range from parentli_ to li_. 2425fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen // ParentVNI must be live in the [Start;End) interval. 2435fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen void addSimpleRange(SlotIndex Start, SlotIndex End, const VNInfo *ParentVNI); 2441407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 2451407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// addRange - Add live ranges to li_ where [Start;End) intersects parentli_. 2461407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// All needed values whose def is not inside [Start;End) must be defined 2471407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen /// beforehand so mapValue will work. 2481407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen void addRange(SlotIndex Start, SlotIndex End); 2491407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen}; 2501407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 2511407c84242688dbcdbaa5b0296c18f46d102f25aJakob Stoklund Olesen 252f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen/// SplitEditor - Edit machine code and LiveIntervals for live range 253f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen/// splitting. 254f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen/// 2555eb308b9448ee5b14fac26c0533eac481bc28471Jakob Stoklund Olesen/// - Create a SplitEditor from a SplitAnalysis. 2567536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen/// - Start a new live interval with openIntv. 2577536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen/// - Mark the places where the new interval is entered using enterIntv* 2587536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen/// - Mark the ranges where the new interval is used with useIntv* 2597536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen/// - Mark the places where the interval is exited with exitIntv*. 2607536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen/// - Finish the current interval with closeIntv and repeat from 2. 2617466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen/// - Rewrite instructions with finish(). 262f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen/// 263f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesenclass SplitEditor { 264f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen SplitAnalysis &sa_; 265f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen LiveIntervals &lis_; 266f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen VirtRegMap &vrm_; 267f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen MachineRegisterInfo &mri_; 268f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen const TargetInstrInfo &tii_; 269cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen const TargetRegisterInfo &tri_; 270f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 271a17768f5822ab62bc18608e5ba473187bf726b84Jakob Stoklund Olesen /// edit_ - The current parent register and new intervals created. 272a17768f5822ab62bc18608e5ba473187bf726b84Jakob Stoklund Olesen LiveRangeEdit &edit_; 273a17768f5822ab62bc18608e5ba473187bf726b84Jakob Stoklund Olesen 2745eb308b9448ee5b14fac26c0533eac481bc28471Jakob Stoklund Olesen /// dupli_ - Created as a copy of curli_, ranges are carved out as new 2755eb308b9448ee5b14fac26c0533eac481bc28471Jakob Stoklund Olesen /// intervals get added through openIntv / closeIntv. This is used to avoid 2765eb308b9448ee5b14fac26c0533eac481bc28471Jakob Stoklund Olesen /// editing curli_. 277dd9f3fdc77b77b10710c27050d508d7c7fb40c25Jakob Stoklund Olesen LiveIntervalMap dupli_; 278f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 279f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen /// Currently open LiveInterval. 280dd9f3fdc77b77b10710c27050d508d7c7fb40c25Jakob Stoklund Olesen LiveIntervalMap openli_; 281f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 282cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen /// defFromParent - Define Reg from ParentVNI at UseIdx using either 283cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen /// rematerialization or a COPY from parent. Return the new value. 284cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen VNInfo *defFromParent(LiveIntervalMap &Reg, 285cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen VNInfo *ParentVNI, 286cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen SlotIndex UseIdx, 287cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen MachineBasicBlock &MBB, 288cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen MachineBasicBlock::iterator I); 289cfa7134a9c33c0c7f8dda359c89dc6763a258e07Jakob Stoklund Olesen 2905fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// intervalsLiveAt - Return true if any member of intervals_ is live at Idx. 2915fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen bool intervalsLiveAt(SlotIndex Idx) const; 2925fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen 2935fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// Values in curli whose live range has been truncated when entering an open 2945fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// li. 2955fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen SmallPtrSet<const VNInfo*, 8> truncatedValues; 2965fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen 2975fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// addTruncSimpleRange - Add the given simple range to dupli_ after 2985fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen /// truncating any overlap with intervals_. 2995fa42a45a1845046dde84089fb4d8e1e1b329b65Jakob Stoklund Olesen void addTruncSimpleRange(SlotIndex Start, SlotIndex End, VNInfo *VNI); 300f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 301c95c1465fdba059f6cbf24d1d9fd84f442c60fe4Jakob Stoklund Olesen /// criticalPreds_ - Set of basic blocks where both dupli and openli should be 302c95c1465fdba059f6cbf24d1d9fd84f442c60fe4Jakob Stoklund Olesen /// live out because of a critical edge. 303c95c1465fdba059f6cbf24d1d9fd84f442c60fe4Jakob Stoklund Olesen SplitAnalysis::BlockPtrSet criticalPreds_; 304c95c1465fdba059f6cbf24d1d9fd84f442c60fe4Jakob Stoklund Olesen 3057466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen /// computeRemainder - Compute the dupli liveness as the complement of all the 3067466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen /// new intervals. 3077466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen void computeRemainder(); 3087466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen 3097466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen /// rewrite - Rewrite all uses of reg to use the new registers. 3107466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen void rewrite(unsigned reg); 3117466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen 312f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesenpublic: 313f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen /// Create a new SplitEditor for editing the LiveInterval analyzed by SA. 3147536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// Newly created intervals will be appended to newIntervals. 315d68f458244b9d9a6644a9550dd5cee60331c9e7dJakob Stoklund Olesen SplitEditor(SplitAnalysis &SA, LiveIntervals&, VirtRegMap&, 316d68f458244b9d9a6644a9550dd5cee60331c9e7dJakob Stoklund Olesen MachineDominatorTree&, LiveRangeEdit&); 317f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 3185eb308b9448ee5b14fac26c0533eac481bc28471Jakob Stoklund Olesen /// getAnalysis - Get the corresponding analysis. 3195eb308b9448ee5b14fac26c0533eac481bc28471Jakob Stoklund Olesen SplitAnalysis &getAnalysis() { return sa_; } 320f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 3217536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// Create a new virtual register and live interval. 3227536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen void openIntv(); 323f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 324f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen /// enterIntvBefore - Enter openli before the instruction at Idx. If curli is 325f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen /// not live before Idx, a COPY is not inserted. 326f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen void enterIntvBefore(SlotIndex Idx); 327f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen 3287536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// enterIntvAtEnd - Enter openli at the end of MBB. 329f6a129a24b866635c3c51edf08749755f952b5f2Jakob Stoklund Olesen void enterIntvAtEnd(MachineBasicBlock &MBB); 330f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 3317536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// useIntv - indicate that all instructions in MBB should use openli. 3327536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen void useIntv(const MachineBasicBlock &MBB); 333f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 3347536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// useIntv - indicate that all instructions in range should use openli. 3357536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen void useIntv(SlotIndex Start, SlotIndex End); 336f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 337f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen /// leaveIntvAfter - Leave openli after the instruction at Idx. 338f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen void leaveIntvAfter(SlotIndex Idx); 339f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen 3407536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// leaveIntvAtTop - Leave the interval at the top of MBB. 3417536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// Currently, only one value can leave the interval. 3427536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen void leaveIntvAtTop(MachineBasicBlock &MBB); 343f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 3447536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen /// closeIntv - Indicate that we are done editing the currently open 345f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen /// LiveInterval, and ranges can be trimmed. 3467536f72a97ad25c3652fdfe26d392fd78b6ea7b9Jakob Stoklund Olesen void closeIntv(); 347f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 3487466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen /// finish - after all the new live ranges have been created, compute the 3497466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen /// remaining live range, and rewrite instructions to use the new registers. 3507466927b1af264b359c860cb9f7d1f3b275cc5cdJakob Stoklund Olesen void finish(); 351f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 352f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen // ===--- High level methods ---=== 353f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 354f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen /// splitAroundLoop - Split curli into a separate live interval inside 35557d0f2deb0afefe69770a28937a4363e7b1f9753Jakob Stoklund Olesen /// the loop. 35657d0f2deb0afefe69770a28937a4363e7b1f9753Jakob Stoklund Olesen void splitAroundLoop(const MachineLoop*); 357f0179004e94259a8adab6c48f295ea9ab18af4c3Jakob Stoklund Olesen 358f1b05f2b0ef48cb80b064e2f792b38c626822fc0Jakob Stoklund Olesen /// splitSingleBlocks - Split curli into a separate live interval inside each 35957d0f2deb0afefe69770a28937a4363e7b1f9753Jakob Stoklund Olesen /// basic block in Blocks. 36057d0f2deb0afefe69770a28937a4363e7b1f9753Jakob Stoklund Olesen void splitSingleBlocks(const SplitAnalysis::BlockPtrSet &Blocks); 36157d0f2deb0afefe69770a28937a4363e7b1f9753Jakob Stoklund Olesen 36257d0f2deb0afefe69770a28937a4363e7b1f9753Jakob Stoklund Olesen /// splitInsideBlock - Split curli into multiple intervals inside MBB. 36357d0f2deb0afefe69770a28937a4363e7b1f9753Jakob Stoklund Olesen void splitInsideBlock(const MachineBasicBlock *); 364fc412d85c46a8656361fe1e9197ea85922e2cd61Jakob Stoklund Olesen}; 3658ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen 3668ae0263471cc29c5f8278ee1ea5b678042ec6dceJakob Stoklund Olesen} 367