LiveDebugVariables.cpp revision 818833f27929d650b4323774cd3660860588f687
1bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen//===- LiveDebugVariables.cpp - Tracking debug info variables -------------===// 2bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// 3bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// The LLVM Compiler Infrastructure 4bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// 5bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// This file is distributed under the University of Illinois Open Source 6bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// License. See LICENSE.TXT for details. 7bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// 8bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen//===----------------------------------------------------------------------===// 9bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// 10bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// This file implements the LiveDebugVariables analysis. 11bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// 12bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// Remove all DBG_VALUE instructions referencing virtual registers and replace 13bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// them with a data structure tracking where live user variables are kept - in a 14bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// virtual register or in a stack slot. 15bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// 16bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// Allow the data structure to be updated during register allocation when values 17bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// are moved between registers and stack slots. Finally emit new DBG_VALUE 18bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// instructions after register allocation is complete. 19bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen// 20bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen//===----------------------------------------------------------------------===// 21bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen 220613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen#define DEBUG_TYPE "livedebug" 23bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen#include "LiveDebugVariables.h" 240613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen#include "llvm/ADT/IntervalMap.h" 25ad90d3a343ca73c32693e2b05b74462ccd9659cdDevang Patel#include "llvm/ADT/Statistic.h" 26c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel#include "llvm/CodeGen/LexicalScopes.h" 27bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen#include "llvm/CodeGen/LiveIntervalAnalysis.h" 280613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen#include "llvm/CodeGen/MachineDominators.h" 2942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen#include "llvm/CodeGen/MachineFunction.h" 3042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen#include "llvm/CodeGen/MachineInstrBuilder.h" 311744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen#include "llvm/CodeGen/MachineRegisterInfo.h" 32bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen#include "llvm/CodeGen/Passes.h" 331ead68d769f27f6d68d4aaeffe4199fa2cacbc95Jakob Stoklund Olesen#include "llvm/CodeGen/VirtRegMap.h" 34d04a8d4b33ff316ca4cf961e06c9e312eff8e64fChandler Carruth#include "llvm/DebugInfo.h" 350b8c9a80f20772c3793201ab5b251d3520b9cea3Chandler Carruth#include "llvm/IR/Constants.h" 360b8c9a80f20772c3793201ab5b251d3520b9cea3Chandler Carruth#include "llvm/IR/Metadata.h" 370b8c9a80f20772c3793201ab5b251d3520b9cea3Chandler Carruth#include "llvm/IR/Value.h" 380613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen#include "llvm/Support/CommandLine.h" 390613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen#include "llvm/Support/Debug.h" 4042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen#include "llvm/Target/TargetInstrInfo.h" 41bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen#include "llvm/Target/TargetMachine.h" 420613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen#include "llvm/Target/TargetRegisterInfo.h" 43bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen 44bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesenusing namespace llvm; 45bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen 4651a666f0e50a34b74212db9c5814153c885153a5Devang Patelstatic cl::opt<bool> 4725dc2268a5aedcb5da57f065dbdb40d790b11bc0Jakob Stoklund OlesenEnableLDV("live-debug-variables", cl::init(true), 4851a666f0e50a34b74212db9c5814153c885153a5Devang Patel cl::desc("Enable the live debug variables pass"), cl::Hidden); 4951a666f0e50a34b74212db9c5814153c885153a5Devang Patel 50ad90d3a343ca73c32693e2b05b74462ccd9659cdDevang PatelSTATISTIC(NumInsertedDebugValues, "Number of DBG_VALUEs inserted"); 51bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesenchar LiveDebugVariables::ID = 0; 52bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen 53bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund OlesenINITIALIZE_PASS_BEGIN(LiveDebugVariables, "livedebugvars", 54bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen "Debug Variable Analysis", false, false) 550613516b16466a92c68d60734801221506c85e86Jakob Stoklund OlesenINITIALIZE_PASS_DEPENDENCY(MachineDominatorTree) 56bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund OlesenINITIALIZE_PASS_DEPENDENCY(LiveIntervals) 57bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund OlesenINITIALIZE_PASS_END(LiveDebugVariables, "livedebugvars", 58bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen "Debug Variable Analysis", false, false) 59bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen 60bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesenvoid LiveDebugVariables::getAnalysisUsage(AnalysisUsage &AU) const { 610613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen AU.addRequired<MachineDominatorTree>(); 62bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen AU.addRequiredTransitive<LiveIntervals>(); 63bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen AU.setPreservesAll(); 64bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen MachineFunctionPass::getAnalysisUsage(AU); 65bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen} 66bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen 67f098620095727dd2a823a94a3a8d47108361ad83Manman RenLiveDebugVariables::LiveDebugVariables() : MachineFunctionPass(ID), pImpl(0) { 68bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen initializeLiveDebugVariablesPass(*PassRegistry::getPassRegistry()); 69bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen} 70bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen 710613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// LocMap - Map of where a user value is live, and its location. 720613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesentypedef IntervalMap<SlotIndex, unsigned, 4> LocMap; 730613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 7476f58d20313a23758399a59ceec0fbc6c2c16397Benjamin Kramernamespace { 753a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel/// UserValueScopes - Keeps track of lexical scopes associated with an 763a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel/// user value's source location. 773a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patelclass UserValueScopes { 783a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel DebugLoc DL; 793a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel LexicalScopes &LS; 803a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel SmallPtrSet<const MachineBasicBlock *, 4> LBlocks; 813a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel 823a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patelpublic: 833a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel UserValueScopes(DebugLoc D, LexicalScopes &L) : DL(D), LS(L) {} 843a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel 853a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel /// dominates - Return true if current scope dominates at least one machine 863a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel /// instruction in a given machine basic block. 873a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel bool dominates(MachineBasicBlock *MBB) { 883a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel if (LBlocks.empty()) 893a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel LS.getMachineBasicBlocks(DL, LBlocks); 903a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel if (LBlocks.count(MBB) != 0 || LS.dominates(DL, MBB)) 913a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel return true; 923a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel return false; 933a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel } 943a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel}; 9576f58d20313a23758399a59ceec0fbc6c2c16397Benjamin Kramer} // end anonymous namespace 963a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel 970613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// UserValue - A user value is a part of a debug info user variable. 980613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// 990613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// A DBG_VALUE instruction notes that (a sub-register of) a virtual register 1000613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// holds part of a user variable. The part is identified by a byte offset. 1010613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// 1020613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// UserValues are grouped into equivalence classes for easier searching. Two 1030613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// user values are related if they refer to the same variable, or if they are 1040613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// held by the same virtual register. The equivalence class is the transitive 1050613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// closure of that relation. 1060613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesennamespace { 1071744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesenclass LDVImpl; 1080613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenclass UserValue { 1090613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen const MDNode *variable; ///< The debug info variable we are part of. 1100613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen unsigned offset; ///< Byte offset into variable. 1113517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl bool IsIndirect; ///< true if this is a register-indirect+offset value. 112f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel DebugLoc dl; ///< The debug location for the variable. This is 113f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel ///< used by dwarf writer to find lexical scope. 1140613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *leader; ///< Equivalence class leader. 1150613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *next; ///< Next value in equivalence class, or null. 1160613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 1170613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// Numbered locations referenced by locmap. 1180804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen SmallVector<MachineOperand, 4> locations; 1190613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 1200613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// Map of slot indices where this value is live. 1210613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LocMap locInts; 1220613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 1235daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen /// coalesceLocation - After LocNo was changed, check if it has become 1245daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen /// identical to another location, and coalesce them. This may cause LocNo or 1255daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen /// a later location to be erased, but no earlier location will be erased. 1265daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen void coalesceLocation(unsigned LocNo); 1275daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen 12842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen /// insertDebugValue - Insert a DBG_VALUE into MBB at Idx for LocNo. 12942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen void insertDebugValue(MachineBasicBlock *MBB, SlotIndex Idx, unsigned LocNo, 13042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen LiveIntervals &LIS, const TargetInstrInfo &TII); 13142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 132f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen /// splitLocation - Replace OldLocNo ranges with NewRegs ranges where NewRegs 133f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen /// is live. Returns true if any changes were made. 1341feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey bool splitLocation(unsigned OldLocNo, ArrayRef<unsigned> NewRegs, 1351feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey LiveIntervals &LIS); 136f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 1370613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenpublic: 1380613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// UserValue - Create a new UserValue. 1393517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl UserValue(const MDNode *var, unsigned o, bool i, DebugLoc L, 140f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel LocMap::Allocator &alloc) 1413517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl : variable(var), offset(o), IsIndirect(i), dl(L), leader(this), 1423517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl next(0), locInts(alloc) 1430613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen {} 1440613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 1450613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// getLeader - Get the leader of this value's equivalence class. 1460613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *getLeader() { 1470613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *l = leader; 1480613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen while (l != l->leader) 1490613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen l = l->leader; 1500613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return leader = l; 1510613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 1520613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 1530613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// getNext - Return the next UserValue in the equivalence class. 1540613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *getNext() const { return next; } 1550613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 156a462d6e8ebe90f3732891b02a057a88038ac1228Devang Patel /// match - Does this UserValue match the parameters? 1570613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen bool match(const MDNode *Var, unsigned Offset) const { 1580613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return Var == variable && Offset == offset; 1590613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 1600613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 1610613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// merge - Merge equivalence classes. 1620613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen static UserValue *merge(UserValue *L1, UserValue *L2) { 1630613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen L2 = L2->getLeader(); 1640613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (!L1) 1650613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return L2; 1660613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen L1 = L1->getLeader(); 1670613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (L1 == L2) 1680613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return L1; 1690613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Splice L2 before L1's members. 1700613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *End = L2; 1710613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen while (End->next) 1720613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen End->leader = L1, End = End->next; 1730613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen End->leader = L1; 1740613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen End->next = L1->next; 1750613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen L1->next = L2; 1760613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return L1; 1770613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 1780613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 1790613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// getLocationNo - Return the location number that matches Loc. 1800804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen unsigned getLocationNo(const MachineOperand &LocMO) { 1811744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (LocMO.isReg()) { 1821744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (LocMO.getReg() == 0) 1831744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen return ~0u; 1841744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // For register locations we dont care about use/def and other flags. 1851744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (unsigned i = 0, e = locations.size(); i != e; ++i) 1861744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (locations[i].isReg() && 1871744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen locations[i].getReg() == LocMO.getReg() && 1881744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen locations[i].getSubReg() == LocMO.getSubReg()) 1891744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen return i; 1901744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen } else 1911744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (unsigned i = 0, e = locations.size(); i != e; ++i) 1921744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (LocMO.isIdenticalTo(locations[i])) 1931744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen return i; 1940804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen locations.push_back(LocMO); 1950804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen // We are storing a MachineOperand outside a MachineInstr. 1960804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen locations.back().clearParent(); 1971744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Don't store def operands. 1981744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (locations.back().isReg()) 1991744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen locations.back().setIsUse(); 2000804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen return locations.size() - 1; 2010613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 2020613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 2031744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// mapVirtRegs - Ensure that all virtual register locations are mapped. 2041744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen void mapVirtRegs(LDVImpl *LDV); 2051744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 2060613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// addDef - Add a definition point to this value. 2070613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen void addDef(SlotIndex Idx, const MachineOperand &LocMO) { 2080613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Add a singular (Idx,Idx) -> Loc mapping. 2090613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LocMap::iterator I = locInts.find(Idx); 2100613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (!I.valid() || I.start() != Idx) 2110613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen I.insert(Idx, Idx.getNextSlot(), getLocationNo(LocMO)); 21279513ed8598bd5ebc25b0764961f326d34aaf388Jakob Stoklund Olesen else 21379513ed8598bd5ebc25b0764961f326d34aaf388Jakob Stoklund Olesen // A later DBG_VALUE at the same SlotIndex overrides the old location. 21479513ed8598bd5ebc25b0764961f326d34aaf388Jakob Stoklund Olesen I.setValue(getLocationNo(LocMO)); 2150613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 2160613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 2170613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// extendDef - Extend the current definition as far as possible down the 2180613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// dominator tree. Stop when meeting an existing def or when leaving the live 2190613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// range of VNI. 2201744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// End points where VNI is no longer live are added to Kills. 2210613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param Idx Starting point for the definition. 2220613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param LocNo Location number to propagate. 2230613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param LI Restrict liveness to where LI has the value VNI. May be null. 2240613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param VNI When LI is not null, this is the value to restrict to. 2251744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// @param Kills Append end points of VNI's live range to Kills. 2260613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param LIS Live intervals analysis. 2270613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param MDT Dominator tree. 2280613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen void extendDef(SlotIndex Idx, unsigned LocNo, 2290613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LiveInterval *LI, const VNInfo *VNI, 2301744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SmallVectorImpl<SlotIndex> *Kills, 231c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel LiveIntervals &LIS, MachineDominatorTree &MDT, 232b82062f65265666690270f3358b0d0f508d3fbbaEric Christopher UserValueScopes &UVS); 2330613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 2341744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// addDefsFromCopies - The value in LI/LocNo may be copies to other 2351744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// registers. Determine if any of the copies are available at the kill 2361744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// points, and add defs if possible. 2371744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// @param LI Scan for copies of the value in LI->reg. 2381744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// @param LocNo Location number of LI->reg. 2391744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// @param Kills Points where the range of LocNo could be extended. 2401744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// @param NewDefs Append (Idx, LocNo) of inserted defs here. 2411744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen void addDefsFromCopies(LiveInterval *LI, unsigned LocNo, 2421744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen const SmallVectorImpl<SlotIndex> &Kills, 2431744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SmallVectorImpl<std::pair<SlotIndex, unsigned> > &NewDefs, 2441744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen MachineRegisterInfo &MRI, 2451744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen LiveIntervals &LIS); 2461744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 2470613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// computeIntervals - Compute the live intervals of all locations after 2480613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// collecting all their def points. 249e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen void computeIntervals(MachineRegisterInfo &MRI, const TargetRegisterInfo &TRI, 250c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel LiveIntervals &LIS, MachineDominatorTree &MDT, 2513a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel UserValueScopes &UVS); 2520613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 253f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen /// splitRegister - Replace OldReg ranges with NewRegs ranges where NewRegs is 254f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen /// live. Returns true if any changes were made. 2551feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey bool splitRegister(unsigned OldLocNo, ArrayRef<unsigned> NewRegs, 2561feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey LiveIntervals &LIS); 257f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 25842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen /// rewriteLocations - Rewrite virtual register locations according to the 25942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen /// provided virtual register map. 26042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen void rewriteLocations(VirtRegMap &VRM, const TargetRegisterInfo &TRI); 26142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 262b3cecdfcf9a0b736d3c0f6f5abffb41ecda3577cEric Christopher /// emitDebugValues - Recreate DBG_VALUE instruction from data structures. 26342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen void emitDebugValues(VirtRegMap *VRM, 26442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen LiveIntervals &LIS, const TargetInstrInfo &TRI); 26542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 266f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel /// findDebugLoc - Return DebugLoc used for this DBG_VALUE instruction. A 267f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel /// variable may have more than one corresponding DBG_VALUE instructions. 268f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel /// Only first one needs DebugLoc to identify variable's lexical scope 269f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel /// in source file. 270f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel DebugLoc findDebugLoc(); 2713a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel 2723a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel /// getDebugLoc - Return DebugLoc of this UserValue. 2733a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel DebugLoc getDebugLoc() { return dl;} 274e77150bbcbf1f53b3830904be4d243c618c00b14Jakob Stoklund Olesen void print(raw_ostream&, const TargetMachine*); 2750613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen}; 2760613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} // namespace 2770613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 2780613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen/// LDVImpl - Implementation of the LiveDebugVariables pass. 2790613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesennamespace { 2800613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenclass LDVImpl { 2810613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LiveDebugVariables &pass; 2820613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LocMap::Allocator allocator; 2830613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MachineFunction *MF; 2840613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LiveIntervals *LIS; 285c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel LexicalScopes LS; 2860613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MachineDominatorTree *MDT; 2870613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen const TargetRegisterInfo *TRI; 2880613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 289f098620095727dd2a823a94a3a8d47108361ad83Manman Ren /// Whether emitDebugValues is called. 290f098620095727dd2a823a94a3a8d47108361ad83Manman Ren bool EmitDone; 291f098620095727dd2a823a94a3a8d47108361ad83Manman Ren /// Whether the machine function is modified during the pass. 292f098620095727dd2a823a94a3a8d47108361ad83Manman Ren bool ModifiedMF; 293f098620095727dd2a823a94a3a8d47108361ad83Manman Ren 2940613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// userValues - All allocated UserValue instances. 2950613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen SmallVector<UserValue*, 8> userValues; 2960613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 2970613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// Map virtual register to eq class leader. 2980613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen typedef DenseMap<unsigned, UserValue*> VRMap; 2996ed4c6af97db8b2bbfd6b54dd2a58f16cf0c592bJakob Stoklund Olesen VRMap virtRegToEqClass; 3000613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3010613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// Map user variable to eq class leader. 3020613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen typedef DenseMap<const MDNode *, UserValue*> UVMap; 3030613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UVMap userVarMap; 3040613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3050613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// getUserValue - Find or create a UserValue. 3063517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl UserValue *getUserValue(const MDNode *Var, unsigned Offset, 3073517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl bool IsIndirect, DebugLoc DL); 3080613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 30930e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen /// lookupVirtReg - Find the EC leader for VirtReg or null. 31030e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen UserValue *lookupVirtReg(unsigned VirtReg); 31130e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen 3120613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// handleDebugValue - Add DBG_VALUE instruction to our maps. 3130613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param MI DBG_VALUE instruction 3140613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param Idx Last valid SLotIndex before instruction. 3150613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @return True if the DBG_VALUE instruction should be deleted. 3160613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen bool handleDebugValue(MachineInstr *MI, SlotIndex Idx); 3170613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3180613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// collectDebugValues - Collect and erase all DBG_VALUE instructions, adding 3190613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// a UserValue def for each instruction. 3200613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @param mf MachineFunction to be scanned. 3210613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// @return True if any debug values were found. 3220613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen bool collectDebugValues(MachineFunction &mf); 3230613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3240613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// computeIntervals - Compute the live intervals of all user values after 3250613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen /// collecting all their def points. 3260613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen void computeIntervals(); 3270613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3280613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenpublic: 329f098620095727dd2a823a94a3a8d47108361ad83Manman Ren LDVImpl(LiveDebugVariables *ps) : pass(*ps), EmitDone(false), 330f098620095727dd2a823a94a3a8d47108361ad83Manman Ren ModifiedMF(false) {} 3310613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen bool runOnMachineFunction(MachineFunction &mf); 3320613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 333f098620095727dd2a823a94a3a8d47108361ad83Manman Ren /// clear - Release all memory. 3340613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen void clear() { 3350613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen DeleteContainerPointers(userValues); 3360613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen userValues.clear(); 3376ed4c6af97db8b2bbfd6b54dd2a58f16cf0c592bJakob Stoklund Olesen virtRegToEqClass.clear(); 3380613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen userVarMap.clear(); 339f098620095727dd2a823a94a3a8d47108361ad83Manman Ren // Make sure we call emitDebugValues if the machine function was modified. 340f098620095727dd2a823a94a3a8d47108361ad83Manman Ren assert((!ModifiedMF || EmitDone) && 341f098620095727dd2a823a94a3a8d47108361ad83Manman Ren "Dbg values are not emitted in LDV"); 342f098620095727dd2a823a94a3a8d47108361ad83Manman Ren EmitDone = false; 343f098620095727dd2a823a94a3a8d47108361ad83Manman Ren ModifiedMF = false; 3440613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 3450613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3461744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen /// mapVirtReg - Map virtual register to an equivalence class. 3471744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen void mapVirtReg(unsigned VirtReg, UserValue *EC); 3481744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 349f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen /// splitRegister - Replace all references to OldReg with NewRegs. 3501feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey void splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs); 351f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 352b3cecdfcf9a0b736d3c0f6f5abffb41ecda3577cEric Christopher /// emitDebugValues - Recreate DBG_VALUE instruction from data structures. 35342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen void emitDebugValues(VirtRegMap *VRM); 35442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 3550613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen void print(raw_ostream&); 3560613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen}; 3570613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} // namespace 3580613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 359e77150bbcbf1f53b3830904be4d243c618c00b14Jakob Stoklund Olesenvoid UserValue::print(raw_ostream &OS, const TargetMachine *TM) { 360a2b552d0aec83b1d030b878a130c8fefafe4d3c3Devang Patel DIVariable DV(variable); 361a2b552d0aec83b1d030b878a130c8fefafe4d3c3Devang Patel OS << "!\""; 362a2b552d0aec83b1d030b878a130c8fefafe4d3c3Devang Patel DV.printExtendedName(OS); 363a2b552d0aec83b1d030b878a130c8fefafe4d3c3Devang Patel OS << "\"\t"; 3640613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (offset) 3650613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen OS << '+' << offset; 3660613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen for (LocMap::const_iterator I = locInts.begin(); I.valid(); ++I) { 3670613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen OS << " [" << I.start() << ';' << I.stop() << "):"; 3680613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (I.value() == ~0u) 3690613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen OS << "undef"; 3700613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen else 3710613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen OS << I.value(); 3720613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 373e77150bbcbf1f53b3830904be4d243c618c00b14Jakob Stoklund Olesen for (unsigned i = 0, e = locations.size(); i != e; ++i) { 374e77150bbcbf1f53b3830904be4d243c618c00b14Jakob Stoklund Olesen OS << " Loc" << i << '='; 375e77150bbcbf1f53b3830904be4d243c618c00b14Jakob Stoklund Olesen locations[i].print(OS, TM); 376e77150bbcbf1f53b3830904be4d243c618c00b14Jakob Stoklund Olesen } 3770613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen OS << '\n'; 3780613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 3790613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3800613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenvoid LDVImpl::print(raw_ostream &OS) { 3810613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen OS << "********** DEBUG VARIABLES **********\n"; 3820613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen for (unsigned i = 0, e = userValues.size(); i != e; ++i) 383e77150bbcbf1f53b3830904be4d243c618c00b14Jakob Stoklund Olesen userValues[i]->print(OS, &MF->getTarget()); 3840613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 3850613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 3865daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesenvoid UserValue::coalesceLocation(unsigned LocNo) { 3870804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen unsigned KeepLoc = 0; 3880804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen for (unsigned e = locations.size(); KeepLoc != e; ++KeepLoc) { 3890804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen if (KeepLoc == LocNo) 3900804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen continue; 3910804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen if (locations[KeepLoc].isIdenticalTo(locations[LocNo])) 3920804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen break; 3935daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen } 3940804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen // No matches. 3950804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen if (KeepLoc == locations.size()) 3960804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen return; 3970804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen 3980804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen // Keep the smaller location, erase the larger one. 3990804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen unsigned EraseLoc = LocNo; 4000804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen if (KeepLoc > EraseLoc) 4010804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen std::swap(KeepLoc, EraseLoc); 4025daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen locations.erase(locations.begin() + EraseLoc); 4035daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen 4045daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen // Rewrite values. 4055daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen for (LocMap::iterator I = locInts.begin(); I.valid(); ++I) { 4065daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen unsigned v = I.value(); 4075daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen if (v == EraseLoc) 4085daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen I.setValue(KeepLoc); // Coalesce when possible. 4095daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen else if (v > EraseLoc) 4105daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen I.setValueUnchecked(v-1); // Avoid coalescing with untransformed values. 4115daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen } 4125daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen} 4135daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen 4141744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesenvoid UserValue::mapVirtRegs(LDVImpl *LDV) { 4151744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (unsigned i = 0, e = locations.size(); i != e; ++i) 4161744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (locations[i].isReg() && 4171744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen TargetRegisterInfo::isVirtualRegister(locations[i].getReg())) 4181744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen LDV->mapVirtReg(locations[i].getReg(), this); 4191744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen} 4201744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 421f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang PatelUserValue *LDVImpl::getUserValue(const MDNode *Var, unsigned Offset, 4223517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl bool IsIndirect, DebugLoc DL) { 4230613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *&Leader = userVarMap[Var]; 4240613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (Leader) { 4250613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UserValue *UV = Leader->getLeader(); 4260613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Leader = UV; 4270613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen for (; UV; UV = UV->getNext()) 4280613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (UV->match(Var, Offset)) 4290613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return UV; 4300613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 4310613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 4323517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl UserValue *UV = new UserValue(Var, Offset, IsIndirect, DL, allocator); 4330613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen userValues.push_back(UV); 4340613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Leader = UserValue::merge(Leader, UV); 4350613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return UV; 4360613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 4370613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 4380613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenvoid LDVImpl::mapVirtReg(unsigned VirtReg, UserValue *EC) { 4390613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen assert(TargetRegisterInfo::isVirtualRegister(VirtReg) && "Only map VirtRegs"); 4406ed4c6af97db8b2bbfd6b54dd2a58f16cf0c592bJakob Stoklund Olesen UserValue *&Leader = virtRegToEqClass[VirtReg]; 4410613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Leader = UserValue::merge(Leader, EC); 4420613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 4430613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 44430e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund OlesenUserValue *LDVImpl::lookupVirtReg(unsigned VirtReg) { 4456ed4c6af97db8b2bbfd6b54dd2a58f16cf0c592bJakob Stoklund Olesen if (UserValue *UV = virtRegToEqClass.lookup(VirtReg)) 44630e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen return UV->getLeader(); 44730e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen return 0; 44830e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen} 44930e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen 4500613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenbool LDVImpl::handleDebugValue(MachineInstr *MI, SlotIndex Idx) { 4510613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // DBG_VALUE loc, offset, variable 4520613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (MI->getNumOperands() != 3 || 4533517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl !(MI->getOperand(1).isReg() || MI->getOperand(1).isImm()) || 4543517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl !MI->getOperand(2).isMetadata()) { 4550613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen DEBUG(dbgs() << "Can't handle " << *MI); 4560613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return false; 4570613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 4580613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 4590613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Get or create the UserValue for (variable,offset). 460818833f27929d650b4323774cd3660860588f687Adrian Prantl bool IsIndirect = MI->isIndirectDebugValue(); 4613517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl unsigned Offset = IsIndirect ? MI->getOperand(1).getImm() : 0; 4620613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen const MDNode *Var = MI->getOperand(2).getMetadata(); 463818833f27929d650b4323774cd3660860588f687Adrian Prantl //here. 4643517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl UserValue *UV = getUserValue(Var, Offset, IsIndirect, MI->getDebugLoc()); 4650613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen UV->addDef(Idx, MI->getOperand(0)); 4660613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return true; 4670613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 4680613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 4690613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenbool LDVImpl::collectDebugValues(MachineFunction &mf) { 4700613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen bool Changed = false; 4710613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen for (MachineFunction::iterator MFI = mf.begin(), MFE = mf.end(); MFI != MFE; 4720613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen ++MFI) { 4730613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MachineBasicBlock *MBB = MFI; 4740613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen for (MachineBasicBlock::iterator MBBI = MBB->begin(), MBBE = MBB->end(); 4750613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MBBI != MBBE;) { 4760613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (!MBBI->isDebugValue()) { 4770613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen ++MBBI; 4780613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen continue; 4790613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 4800613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // DBG_VALUE has no slot index, use the previous instruction instead. 4810613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen SlotIndex Idx = MBBI == MBB->begin() ? 4820613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LIS->getMBBStartIdx(MBB) : 4832debd48ca790ac01be6e12e094fdf4fdcadc8364Jakob Stoklund Olesen LIS->getInstructionIndex(llvm::prior(MBBI)).getRegSlot(); 4840613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Handle consecutive DBG_VALUE instructions with the same slot index. 4850613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen do { 4860613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (handleDebugValue(MBBI, Idx)) { 4870613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MBBI = MBB->erase(MBBI); 4880613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Changed = true; 4890613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } else 4900613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen ++MBBI; 4910613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } while (MBBI != MBBE && MBBI->isDebugValue()); 4920613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 4930613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 4940613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return Changed; 4950613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 4960613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 4970613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenvoid UserValue::extendDef(SlotIndex Idx, unsigned LocNo, 4980613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LiveInterval *LI, const VNInfo *VNI, 4991744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SmallVectorImpl<SlotIndex> *Kills, 500c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel LiveIntervals &LIS, MachineDominatorTree &MDT, 501b82062f65265666690270f3358b0d0f508d3fbbaEric Christopher UserValueScopes &UVS) { 5020613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen SmallVector<SlotIndex, 16> Todo; 5030613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Todo.push_back(Idx); 5040613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen do { 5050613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen SlotIndex Start = Todo.pop_back_val(); 5060613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MachineBasicBlock *MBB = LIS.getMBBFromIndex(Start); 5070613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen SlotIndex Stop = LIS.getMBBEndIdx(MBB); 50812a40314a91511b65bc83782fd5a3e981331adb1Jakob Stoklund Olesen LocMap::iterator I = locInts.find(Start); 5090613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 5100613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Limit to VNI's live range. 5110613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen bool ToEnd = true; 5120613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (LI && VNI) { 5130613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LiveRange *Range = LI->getLiveRangeContaining(Start); 5141744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (!Range || Range->valno != VNI) { 5151744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (Kills) 5161744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen Kills->push_back(Start); 5170613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen continue; 5181744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen } 5190613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (Range->end < Stop) 5200613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Stop = Range->end, ToEnd = false; 5210613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 5220613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 5230613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // There could already be a short def at Start. 5240613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (I.valid() && I.start() <= Start) { 5250613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Stop when meeting a different location or an already extended interval. 5260613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Start = Start.getNextSlot(); 5270613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (I.value() != LocNo || I.stop() != Start) 5280613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen continue; 5290613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // This is a one-slot placeholder. Just skip it. 5300613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen ++I; 5310613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 5320613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 5330613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Limited by the next def. 5340613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (I.valid() && I.start() < Stop) 5350613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Stop = I.start(), ToEnd = false; 5361744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Limited by VNI's live range. 5371744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen else if (!ToEnd && Kills) 5381744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen Kills->push_back(Stop); 5390613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 5400613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (Start >= Stop) 5410613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen continue; 5420613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 5430613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen I.insert(Start, Stop, LocNo); 5440613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 5450613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // If we extended to the MBB end, propagate down the dominator tree. 5460613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (!ToEnd) 5470613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen continue; 5480613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen const std::vector<MachineDomTreeNode*> &Children = 5490613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MDT.getNode(MBB)->getChildren(); 550c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel for (unsigned i = 0, e = Children.size(); i != e; ++i) { 551c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel MachineBasicBlock *MBB = Children[i]->getBlock(); 5523a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel if (UVS.dominates(MBB)) 553c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel Todo.push_back(LIS.getMBBStartIdx(MBB)); 554c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel } 5550613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } while (!Todo.empty()); 5560613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 5570613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 5580613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenvoid 5591744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund OlesenUserValue::addDefsFromCopies(LiveInterval *LI, unsigned LocNo, 5601744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen const SmallVectorImpl<SlotIndex> &Kills, 5611744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SmallVectorImpl<std::pair<SlotIndex, unsigned> > &NewDefs, 5621744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen MachineRegisterInfo &MRI, LiveIntervals &LIS) { 5631744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (Kills.empty()) 5641744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen return; 5651744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Don't track copies from physregs, there are too many uses. 5661744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (!TargetRegisterInfo::isVirtualRegister(LI->reg)) 5671744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen return; 5681744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 5691744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Collect all the (vreg, valno) pairs that are copies of LI. 5701744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SmallVector<std::pair<LiveInterval*, const VNInfo*>, 8> CopyValues; 5711744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (MachineRegisterInfo::use_nodbg_iterator 5721744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen UI = MRI.use_nodbg_begin(LI->reg), 5731744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen UE = MRI.use_nodbg_end(); UI != UE; ++UI) { 5741744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Copies of the full value. 5751744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (UI.getOperand().getSubReg() || !UI->isCopy()) 5761744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen continue; 5771744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen MachineInstr *MI = &*UI; 5781744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen unsigned DstReg = MI->getOperand(0).getReg(); 5791744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 58028cf1156c93afabedc69fe7b73aa92ce85e323a5Jakob Stoklund Olesen // Don't follow copies to physregs. These are usually setting up call 58128cf1156c93afabedc69fe7b73aa92ce85e323a5Jakob Stoklund Olesen // arguments, and the argument registers are always call clobbered. We are 58228cf1156c93afabedc69fe7b73aa92ce85e323a5Jakob Stoklund Olesen // better off in the source register which could be a callee-saved register, 58328cf1156c93afabedc69fe7b73aa92ce85e323a5Jakob Stoklund Olesen // or it could be spilled. 58428cf1156c93afabedc69fe7b73aa92ce85e323a5Jakob Stoklund Olesen if (!TargetRegisterInfo::isVirtualRegister(DstReg)) 58528cf1156c93afabedc69fe7b73aa92ce85e323a5Jakob Stoklund Olesen continue; 58628cf1156c93afabedc69fe7b73aa92ce85e323a5Jakob Stoklund Olesen 5871744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Is LocNo extended to reach this copy? If not, another def may be blocking 5881744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // it, or we are looking at a wrong value of LI. 5891744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SlotIndex Idx = LIS.getInstructionIndex(MI); 5902debd48ca790ac01be6e12e094fdf4fdcadc8364Jakob Stoklund Olesen LocMap::iterator I = locInts.find(Idx.getRegSlot(true)); 5911744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (!I.valid() || I.value() != LocNo) 5921744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen continue; 5931744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 5941744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (!LIS.hasInterval(DstReg)) 5951744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen continue; 5961744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen LiveInterval *DstLI = &LIS.getInterval(DstReg); 5972debd48ca790ac01be6e12e094fdf4fdcadc8364Jakob Stoklund Olesen const VNInfo *DstVNI = DstLI->getVNInfoAt(Idx.getRegSlot()); 5982debd48ca790ac01be6e12e094fdf4fdcadc8364Jakob Stoklund Olesen assert(DstVNI && DstVNI->def == Idx.getRegSlot() && "Bad copy value"); 5991744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen CopyValues.push_back(std::make_pair(DstLI, DstVNI)); 6001744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen } 6011744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 6021744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (CopyValues.empty()) 6031744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen return; 6041744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 6051744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen DEBUG(dbgs() << "Got " << CopyValues.size() << " copies of " << *LI << '\n'); 6061744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 6071744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Try to add defs of the copied values for each kill point. 6081744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (unsigned i = 0, e = Kills.size(); i != e; ++i) { 6091744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SlotIndex Idx = Kills[i]; 6101744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (unsigned j = 0, e = CopyValues.size(); j != e; ++j) { 6111744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen LiveInterval *DstLI = CopyValues[j].first; 6121744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen const VNInfo *DstVNI = CopyValues[j].second; 6131744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (DstLI->getVNInfoAt(Idx) != DstVNI) 6141744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen continue; 6151744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Check that there isn't already a def at Idx 6161744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen LocMap::iterator I = locInts.find(Idx); 6171744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen if (I.valid() && I.start() <= Idx) 6181744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen continue; 6191744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen DEBUG(dbgs() << "Kill at " << Idx << " covered by valno #" 6201744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen << DstVNI->id << " in " << *DstLI << '\n'); 6211744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen MachineInstr *CopyMI = LIS.getInstructionFromIndex(DstVNI->def); 6221744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen assert(CopyMI && CopyMI->isCopy() && "Bad copy value"); 6231744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen unsigned LocNo = getLocationNo(CopyMI->getOperand(0)); 6241744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen I.insert(Idx, Idx.getNextSlot(), LocNo); 6251744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen NewDefs.push_back(std::make_pair(Idx, LocNo)); 6261744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen break; 6271744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen } 6281744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen } 6291744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen} 6301744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen 6311744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesenvoid 6321744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund OlesenUserValue::computeIntervals(MachineRegisterInfo &MRI, 633e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen const TargetRegisterInfo &TRI, 6341744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen LiveIntervals &LIS, 635c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel MachineDominatorTree &MDT, 636b82062f65265666690270f3358b0d0f508d3fbbaEric Christopher UserValueScopes &UVS) { 6370613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen SmallVector<std::pair<SlotIndex, unsigned>, 16> Defs; 6380613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 6390613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Collect all defs to be extended (Skipping undefs). 6400613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen for (LocMap::const_iterator I = locInts.begin(); I.valid(); ++I) 6410613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (I.value() != ~0u) 6420613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen Defs.push_back(std::make_pair(I.start(), I.value())); 6430613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 6441744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen // Extend all defs, and possibly add new ones along the way. 6451744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (unsigned i = 0; i != Defs.size(); ++i) { 6460613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen SlotIndex Idx = Defs[i].first; 6470613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen unsigned LocNo = Defs[i].second; 6480804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen const MachineOperand &Loc = locations[LocNo]; 6490613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 650e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen if (!Loc.isReg()) { 651e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen extendDef(Idx, LocNo, 0, 0, 0, LIS, MDT, UVS); 652e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen continue; 653e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen } 654e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen 6550613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Register locations are constrained to where the register value is live. 656e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen if (TargetRegisterInfo::isVirtualRegister(Loc.getReg())) { 657b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen LiveInterval *LI = 0; 658b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen const VNInfo *VNI = 0; 659b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen if (LIS.hasInterval(Loc.getReg())) { 660b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen LI = &LIS.getInterval(Loc.getReg()); 661b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen VNI = LI->getVNInfoAt(Idx); 662b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen } 6631744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen SmallVector<SlotIndex, 16> Kills; 6643a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel extendDef(Idx, LocNo, LI, VNI, &Kills, LIS, MDT, UVS); 665b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen if (LI) 666b150930910a254377a62ed74af981c37eafe8fcbJakob Stoklund Olesen addDefsFromCopies(LI, LocNo, Kills, Defs, MRI, LIS); 667e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen continue; 668e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen } 669e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen 670e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen // For physregs, use the live range of the first regunit as a guide. 671e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen unsigned Unit = *MCRegUnitIterator(Loc.getReg(), &TRI); 672e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen LiveInterval *LI = &LIS.getRegUnit(Unit); 673e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen const VNInfo *VNI = LI->getVNInfoAt(Idx); 674e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen // Don't track copies from physregs, it is too expensive. 675e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen extendDef(Idx, LocNo, LI, VNI, 0, LIS, MDT, UVS); 6760613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen } 6770613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 6780613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen // Finally, erase all the undefs. 6790613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen for (LocMap::iterator I = locInts.begin(); I.valid();) 6800613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (I.value() == ~0u) 6810613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen I.erase(); 6820613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen else 6830613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen ++I; 6840613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 6850613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 6860613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenvoid LDVImpl::computeIntervals() { 6871744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen for (unsigned i = 0, e = userValues.size(); i != e; ++i) { 6883a2d80df88c28dc8b2d3a855c3ebd7935c8ad125Devang Patel UserValueScopes UVS(userValues[i]->getDebugLoc(), LS); 689e8a0a1286417e73f4b2bffe21ae45882701e703fJakob Stoklund Olesen userValues[i]->computeIntervals(MF->getRegInfo(), *TRI, *LIS, *MDT, UVS); 6901744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen userValues[i]->mapVirtRegs(this); 6911744e476ec3df0350a1163bf2c6439ea21aefbbaJakob Stoklund Olesen } 6920613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 6930613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 6940613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenbool LDVImpl::runOnMachineFunction(MachineFunction &mf) { 6950613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MF = &mf; 6960613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen LIS = &pass.getAnalysis<LiveIntervals>(); 6970613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen MDT = &pass.getAnalysis<MachineDominatorTree>(); 6980613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen TRI = mf.getTarget().getRegisterInfo(); 6990613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen clear(); 700c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel LS.initialize(mf); 7010613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen DEBUG(dbgs() << "********** COMPUTING LIVE DEBUG VARIABLES: " 702986d76d7b3844b9a2f3d01a48975952749267a93David Blaikie << mf.getName() << " **********\n"); 7030613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 7040613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen bool Changed = collectDebugValues(mf); 7050613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen computeIntervals(); 7060613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen DEBUG(print(dbgs())); 707c722c3d5ffd4ad07e17f81c2b2eb7f8074559600Devang Patel LS.releaseMemory(); 708f098620095727dd2a823a94a3a8d47108361ad83Manman Ren ModifiedMF = Changed; 7090613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen return Changed; 7100613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 7110613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 712bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesenbool LiveDebugVariables::runOnMachineFunction(MachineFunction &mf) { 71351a666f0e50a34b74212db9c5814153c885153a5Devang Patel if (!EnableLDV) 71451a666f0e50a34b74212db9c5814153c885153a5Devang Patel return false; 7150613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (!pImpl) 7160613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen pImpl = new LDVImpl(this); 717f098620095727dd2a823a94a3a8d47108361ad83Manman Ren return static_cast<LDVImpl*>(pImpl)->runOnMachineFunction(mf); 7180613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 7190613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 7200613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesenvoid LiveDebugVariables::releaseMemory() { 721f098620095727dd2a823a94a3a8d47108361ad83Manman Ren if (pImpl) 7220613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen static_cast<LDVImpl*>(pImpl)->clear(); 7230613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen} 7240613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen 7250613516b16466a92c68d60734801221506c85e86Jakob Stoklund OlesenLiveDebugVariables::~LiveDebugVariables() { 7260613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen if (pImpl) 7270613516b16466a92c68d60734801221506c85e86Jakob Stoklund Olesen delete static_cast<LDVImpl*>(pImpl); 728bb7b23f5b79a7ca2aa62faa1a6078428af597234Jakob Stoklund Olesen} 72930e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen 730f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen//===----------------------------------------------------------------------===// 731f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen// Live Range Splitting 732f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen//===----------------------------------------------------------------------===// 733f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 734f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesenbool 7351feb5854aeeda897e9318c8193d187673c8576b8Mark LaceyUserValue::splitLocation(unsigned OldLocNo, ArrayRef<unsigned> NewRegs, 7361feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey LiveIntervals& LIS) { 737f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen DEBUG({ 738f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen dbgs() << "Splitting Loc" << OldLocNo << '\t'; 739f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen print(dbgs(), 0); 740f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen }); 741f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen bool DidChange = false; 742f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMap::iterator LocMapI; 743f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.setMap(locInts); 744f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen for (unsigned i = 0; i != NewRegs.size(); ++i) { 7451feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey LiveInterval *LI = &LIS.getInterval(NewRegs[i]); 746f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LI->empty()) 747f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen continue; 748f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 749f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Don't allocate the new LocNo until it is needed. 750f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen unsigned NewLocNo = ~0u; 751f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 752f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Iterate over the overlaps between locInts and LI. 753f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.find(LI->beginIndex()); 754f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (!LocMapI.valid()) 755f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen continue; 756f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LiveInterval::iterator LII = LI->advanceTo(LI->begin(), LocMapI.start()); 757f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LiveInterval::iterator LIE = LI->end(); 758f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen while (LocMapI.valid() && LII != LIE) { 759f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // At this point, we know that LocMapI.stop() > LII->start. 760f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LII = LI->advanceTo(LII, LocMapI.start()); 761f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LII == LIE) 762f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen break; 763f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 764f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Now LII->end > LocMapI.start(). Do we have an overlap? 765f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LocMapI.value() == OldLocNo && LII->start < LocMapI.stop()) { 766f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Overlapping correct location. Allocate NewLocNo now. 767f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (NewLocNo == ~0u) { 768f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen MachineOperand MO = MachineOperand::CreateReg(LI->reg, false); 769f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen MO.setSubReg(locations[OldLocNo].getSubReg()); 770f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen NewLocNo = getLocationNo(MO); 771f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen DidChange = true; 772f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 773f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 774f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen SlotIndex LStart = LocMapI.start(); 775f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen SlotIndex LStop = LocMapI.stop(); 776f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 777f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Trim LocMapI down to the LII overlap. 778f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LStart < LII->start) 779f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.setStartUnchecked(LII->start); 780f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LStop > LII->end) 781f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.setStopUnchecked(LII->end); 782f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 783f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Change the value in the overlap. This may trigger coalescing. 784f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.setValue(NewLocNo); 785f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 786f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Re-insert any removed OldLocNo ranges. 787f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LStart < LocMapI.start()) { 788f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.insert(LStart, LocMapI.start(), OldLocNo); 789f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen ++LocMapI; 790f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen assert(LocMapI.valid() && "Unexpected coalescing"); 791f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 792f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LStop > LocMapI.stop()) { 793f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen ++LocMapI; 794f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.insert(LII->end, LStop, OldLocNo); 795f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen --LocMapI; 796f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 797f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 798f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 799f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Advance to the next overlap. 800f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (LII->end < LocMapI.stop()) { 801f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (++LII == LIE) 802f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen break; 803f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.advanceTo(LII->start); 804f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } else { 805f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen ++LocMapI; 806f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (!LocMapI.valid()) 807f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen break; 808f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LII = LI->advanceTo(LII, LocMapI.start()); 809f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 810f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 811f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 812f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 813f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Finally, remove any remaining OldLocNo intervals and OldLocNo itself. 814f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen locations.erase(locations.begin() + OldLocNo); 815f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.goToBegin(); 816f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen while (LocMapI.valid()) { 817f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen unsigned v = LocMapI.value(); 818f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (v == OldLocNo) { 819f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen DEBUG(dbgs() << "Erasing [" << LocMapI.start() << ';' 820f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen << LocMapI.stop() << ")\n"); 821f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.erase(); 822f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } else { 823f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (v > OldLocNo) 824f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen LocMapI.setValueUnchecked(v-1); 825f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen ++LocMapI; 826f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 827f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 828f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 829f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen DEBUG({dbgs() << "Split result: \t"; print(dbgs(), 0);}); 830f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen return DidChange; 831f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen} 832f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 833f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesenbool 8341feb5854aeeda897e9318c8193d187673c8576b8Mark LaceyUserValue::splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs, 8351feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey LiveIntervals &LIS) { 836f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen bool DidChange = false; 8376212f9a304d7f8061c87920d39bddbc19afecb0cJakob Stoklund Olesen // Split locations referring to OldReg. Iterate backwards so splitLocation can 8387cc5177d460333ca9a2f3c0783dd0d0490456867Eric Christopher // safely erase unused locations. 8396212f9a304d7f8061c87920d39bddbc19afecb0cJakob Stoklund Olesen for (unsigned i = locations.size(); i ; --i) { 8406212f9a304d7f8061c87920d39bddbc19afecb0cJakob Stoklund Olesen unsigned LocNo = i-1; 841f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen const MachineOperand *Loc = &locations[LocNo]; 842f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (!Loc->isReg() || Loc->getReg() != OldReg) 843f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen continue; 8441feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey DidChange |= splitLocation(LocNo, NewRegs, LIS); 845f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen } 846f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen return DidChange; 847f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen} 848f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 8491feb5854aeeda897e9318c8193d187673c8576b8Mark Laceyvoid LDVImpl::splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs) { 850f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen bool DidChange = false; 851f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen for (UserValue *UV = lookupVirtReg(OldReg); UV; UV = UV->getNext()) 8521feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey DidChange |= UV->splitRegister(OldReg, NewRegs, *LIS); 853f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 854f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (!DidChange) 855f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen return; 856f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 857f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen // Map all of the new virtual registers. 858f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen UserValue *UV = lookupVirtReg(OldReg); 859f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen for (unsigned i = 0; i != NewRegs.size(); ++i) 8601feb5854aeeda897e9318c8193d187673c8576b8Mark Lacey mapVirtReg(NewRegs[i], UV); 861f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen} 862f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 863f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesenvoid LiveDebugVariables:: 8641feb5854aeeda897e9318c8193d187673c8576b8Mark LaceysplitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs, LiveIntervals &LIS) { 865f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen if (pImpl) 866f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen static_cast<LDVImpl*>(pImpl)->splitRegister(OldReg, NewRegs); 867f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen} 868f42b66169d75301346e3685fd2b3e45e47806367Jakob Stoklund Olesen 86942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesenvoid 87042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund OlesenUserValue::rewriteLocations(VirtRegMap &VRM, const TargetRegisterInfo &TRI) { 87142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // Iterate over locations in reverse makes it easier to handle coalescing. 87242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen for (unsigned i = locations.size(); i ; --i) { 87342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen unsigned LocNo = i-1; 8740804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen MachineOperand &Loc = locations[LocNo]; 87542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // Only virtual registers are rewritten. 8760804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen if (!Loc.isReg() || !Loc.getReg() || 8770804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen !TargetRegisterInfo::isVirtualRegister(Loc.getReg())) 87842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen continue; 8790804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen unsigned VirtReg = Loc.getReg(); 880f203627f21614cbef9526aa791b3e7b0493d1e41Jakob Stoklund Olesen if (VRM.isAssignedReg(VirtReg) && 881f203627f21614cbef9526aa791b3e7b0493d1e41Jakob Stoklund Olesen TargetRegisterInfo::isPhysicalRegister(VRM.getPhys(VirtReg))) { 882cf724f078623e786fc92335fdb0ec70b46f2e86dJakob Stoklund Olesen // This can create a %noreg operand in rare cases when the sub-register 883cf724f078623e786fc92335fdb0ec70b46f2e86dJakob Stoklund Olesen // index is no longer available. That means the user value is in a 884cf724f078623e786fc92335fdb0ec70b46f2e86dJakob Stoklund Olesen // non-existent sub-register, and %noreg is exactly what we want. 8850804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen Loc.substPhysReg(VRM.getPhys(VirtReg), TRI); 886cb39064e7aee2273da1d00e6b800db84ddc34b6bJakob Stoklund Olesen } else if (VRM.getStackSlot(VirtReg) != VirtRegMap::NO_STACK_SLOT) { 88742acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // FIXME: Translate SubIdx to a stackslot offset. 8880804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen Loc = MachineOperand::CreateFI(VRM.getStackSlot(VirtReg)); 88942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } else { 8900804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen Loc.setReg(0); 8910804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen Loc.setSubReg(0); 89242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } 8935daec2215bdb6f484956362d81e5923bb2bffd58Jakob Stoklund Olesen coalesceLocation(LocNo); 89442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } 89542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen} 89642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 897f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel/// findInsertLocation - Find an iterator for inserting a DBG_VALUE 89842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen/// instruction. 89942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesenstatic MachineBasicBlock::iterator 900f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang PatelfindInsertLocation(MachineBasicBlock *MBB, SlotIndex Idx, 90142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen LiveIntervals &LIS) { 90242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen SlotIndex Start = LIS.getMBBStartIdx(MBB); 90342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen Idx = Idx.getBaseIndex(); 90442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 90542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // Try to find an insert location by going backwards from Idx. 90642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen MachineInstr *MI; 90742acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen while (!(MI = LIS.getInstructionFromIndex(Idx))) { 90842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // We've reached the beginning of MBB. 90942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen if (Idx == Start) { 91042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen MachineBasicBlock::iterator I = MBB->SkipPHIsAndLabels(MBB->begin()); 91142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen return I; 91242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } 91342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen Idx = Idx.getPrevIndex(); 91442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } 915f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel 916eea666f216ad3a8f8cd88a969176f86add7228f3Jakob Stoklund Olesen // Don't insert anything after the first terminator, though. 9175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng return MI->isTerminator() ? MBB->getFirstTerminator() : 9185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng llvm::next(MachineBasicBlock::iterator(MI)); 91942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen} 92042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 921f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang PatelDebugLoc UserValue::findDebugLoc() { 922f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel DebugLoc D = dl; 923f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel dl = DebugLoc(); 924f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel return D; 925f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel} 92642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesenvoid UserValue::insertDebugValue(MachineBasicBlock *MBB, SlotIndex Idx, 92742acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen unsigned LocNo, 92842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen LiveIntervals &LIS, 92942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen const TargetInstrInfo &TII) { 930f827cd717b63fd3f1d9ad16e69087c65e9af8c82Devang Patel MachineBasicBlock::iterator I = findInsertLocation(MBB, Idx, LIS); 9310804ead404d694b35e9c55ccbf43f99cd394e487Jakob Stoklund Olesen MachineOperand &Loc = locations[LocNo]; 932d9f3fc7faaa7686af3e1a004d86397da9c8e0449Devang Patel ++NumInsertedDebugValues; 93342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 9343517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl if (Loc.isReg()) 9353517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl BuildMI(*MBB, I, findDebugLoc(), TII.get(TargetOpcode::DBG_VALUE), 9363517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl IsIndirect, Loc.getReg(), offset, variable); 9373517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl else 9383517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl BuildMI(*MBB, I, findDebugLoc(), TII.get(TargetOpcode::DBG_VALUE)) 9393517640443f0b5224e2a6414c246ac60016ee9d4Adrian Prantl .addOperand(Loc).addImm(offset).addMetadata(variable); 94042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen} 94142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 94242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesenvoid UserValue::emitDebugValues(VirtRegMap *VRM, LiveIntervals &LIS, 94342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen const TargetInstrInfo &TII) { 94442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen MachineFunction::iterator MFEnd = VRM->getMachineFunction().end(); 94542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 94642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen for (LocMap::const_iterator I = locInts.begin(); I.valid();) { 94742acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen SlotIndex Start = I.start(); 94842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen SlotIndex Stop = I.stop(); 94942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen unsigned LocNo = I.value(); 95042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen DEBUG(dbgs() << "\t[" << Start << ';' << Stop << "):" << LocNo); 95142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen MachineFunction::iterator MBB = LIS.getMBBFromIndex(Start); 95242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen SlotIndex MBBEnd = LIS.getMBBEndIdx(MBB); 95342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 95442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen DEBUG(dbgs() << " BB#" << MBB->getNumber() << '-' << MBBEnd); 95542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen insertDebugValue(MBB, Start, LocNo, LIS, TII); 95642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // This interval may span multiple basic blocks. 95742acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // Insert a DBG_VALUE into each one. 95842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen while(Stop > MBBEnd) { 95942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen // Move to the next block. 96042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen Start = MBBEnd; 96142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen if (++MBB == MFEnd) 96242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen break; 96342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen MBBEnd = LIS.getMBBEndIdx(MBB); 96442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen DEBUG(dbgs() << " BB#" << MBB->getNumber() << '-' << MBBEnd); 96542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen insertDebugValue(MBB, Start, LocNo, LIS, TII); 96642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } 96742acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen DEBUG(dbgs() << '\n'); 96842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen if (MBB == MFEnd) 96942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen break; 97042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 97142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen ++I; 97242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } 97342acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen} 97442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 97542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesenvoid LDVImpl::emitDebugValues(VirtRegMap *VRM) { 97642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen DEBUG(dbgs() << "********** EMITTING LIVE DEBUG VARIABLES **********\n"); 97742acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen const TargetInstrInfo *TII = MF->getTarget().getInstrInfo(); 97842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen for (unsigned i = 0, e = userValues.size(); i != e; ++i) { 979cf724f078623e786fc92335fdb0ec70b46f2e86dJakob Stoklund Olesen DEBUG(userValues[i]->print(dbgs(), &MF->getTarget())); 98042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen userValues[i]->rewriteLocations(*VRM, *TRI); 98142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen userValues[i]->emitDebugValues(VRM, *LIS, *TII); 98242acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen } 983f098620095727dd2a823a94a3a8d47108361ad83Manman Ren EmitDone = true; 98442acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen} 98542acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 98642acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesenvoid LiveDebugVariables::emitDebugValues(VirtRegMap *VRM) { 987f098620095727dd2a823a94a3a8d47108361ad83Manman Ren if (pImpl) 98842acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen static_cast<LDVImpl*>(pImpl)->emitDebugValues(VRM); 98942acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen} 99042acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 99142acf069c9e46395a2fa230ed6b89b402828e3d5Jakob Stoklund Olesen 99230e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen#ifndef NDEBUG 99330e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesenvoid LiveDebugVariables::dump() { 99430e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen if (pImpl) 99530e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen static_cast<LDVImpl*>(pImpl)->print(dbgs()); 99630e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen} 99730e2128a731e5a0bcac45a6a79a03bdedce68a0aJakob Stoklund Olesen#endif 998