270     bool fixupImmediateBr(ImmBranch &Br);
271     bool fixupConditionalBr(ImmBranch &Br);
272     bool fixupUnconditionalBr(ImmBranch &Br);
1705 bool ARMConstantIslands::fixupImmediateBr(ImmBranch &Br) {  in fixupImmediateBr()  argument
1706   MachineInstr *MI = Br.MI;  in fixupImmediateBr()
1710   if (BBUtils->isBBInRange(MI, DestBB, Br.MaxDisp))  in fixupImmediateBr()
1713   if (!Br.isCond)  in fixupImmediateBr()
1714     return fixupUnconditionalBr(Br);  in fixupImmediateBr()
1715   return fixupConditionalBr(Br);  in fixupImmediateBr()
1723 ARMConstantIslands::fixupUnconditionalBr(ImmBranch &Br) {  in fixupUnconditionalBr()  argument
1724   MachineInstr *MI = Br.MI;  in fixupUnconditionalBr()
1733   Br.MaxDisp = (1 << 21) * 2;  in fixupUnconditionalBr()
1749 ARMConstantIslands::fixupConditionalBr(ImmBranch &Br) {  in fixupConditionalBr()  argument
1750   MachineInstr *MI = Br.MI;  in fixupConditionalBr()
1774         BMI->getOpcode() == Br.UncondBr) {  in fixupConditionalBr()
1783       if (BBUtils->isBBInRange(MI, NewDest, Br.MaxDisp)) {  in fixupConditionalBr()
1820   Br.MI = &MBB->back();  in fixupConditionalBr()
1823     BuildMI(MBB, DebugLoc(), TII->get(Br.UncondBr))  in fixupConditionalBr()
1827     BuildMI(MBB, DebugLoc(), TII->get(Br.UncondBr)).addMBB(DestBB);  in fixupConditionalBr()
1829   unsigned MaxDisp = getUnconditionalBrDisp(Br.UncondBr);  in fixupConditionalBr()
1830   ImmBranches.push_back(ImmBranch(&MBB->back(), MaxDisp, false, Br.UncondBr));  in fixupConditionalBr()
1894   auto TryShrinkBranch = [this](ImmBranch &Br) {  in optimizeThumb2Branches()  argument
1895     unsigned Opcode = Br.MI->getOpcode();  in optimizeThumb2Branches()
1914       MachineBasicBlock *DestBB = Br.MI->getOperand(0).getMBB();  in optimizeThumb2Branches()
1915       if (BBUtils->isBBInRange(Br.MI, DestBB, MaxOffs)) {  in optimizeThumb2Branches()
1916         LLVM_DEBUG(dbgs() << "Shrink branch: " << *Br.MI);  in optimizeThumb2Branches()
1917         Br.MI->setDesc(TII->get(NewOpc));  in optimizeThumb2Branches()
1918         MachineBasicBlock *MBB = Br.MI->getParent();  in optimizeThumb2Branches()
1933   auto FindCmpForCBZ = [this](ImmBranch &Br, ImmCompare &ImmCmp,  in optimizeThumb2Branches()
1940     if (!Br.MI->killsRegister(ARM::CPSR, /*TRI=*/nullptr))  in optimizeThumb2Branches()
1945     ARMCC::CondCodes Pred = getInstrPredicate(*Br.MI, PredReg);  in optimizeThumb2Branches()
1955     unsigned BrOffset = BBUtils->getOffsetOf(Br.MI) + 4 - 2;  in optimizeThumb2Branches()
1963     MachineInstr *CmpMI = findCMPToFoldIntoCBZ(Br.MI, TRI);  in optimizeThumb2Branches()
1972   auto TryConvertToLE = [this](ImmBranch &Br, ImmCompare &Cmp) {  in optimizeThumb2Branches()  argument
1973     if (Br.MI->getOpcode() != ARM::t2Bcc || !STI->hasLOB() ||  in optimizeThumb2Branches()
1977     MachineBasicBlock *MBB = Br.MI->getParent();  in optimizeThumb2Branches()
1978     MachineBasicBlock *DestBB = Br.MI->getOperand(0).getMBB();  in optimizeThumb2Branches()
1980         !BBUtils->isBBInRange(Br.MI, DestBB, 4094))  in optimizeThumb2Branches()
1990     MachineInstrBuilder MIB = BuildMI(*MBB, Br.MI, Br.MI->getDebugLoc(),  in optimizeThumb2Branches()
1993     MIB.add(Br.MI->getOperand(0));  in optimizeThumb2Branches()
1994     Br.MI->eraseFromParent();  in optimizeThumb2Branches()
1995     Br.MI = MIB;  in optimizeThumb2Branches()
2007   for (ImmBranch &Br : reverse(ImmBranches)) {  in optimizeThumb2Branches()
2008     MachineBasicBlock *DestBB = Br.MI->getOperand(0).getMBB();  in optimizeThumb2Branches()
2009     MachineBasicBlock *MBB = Br.MI->getParent();  in optimizeThumb2Branches()
2010     MachineBasicBlock *ExitBB = &MBB->back() == Br.MI ?  in optimizeThumb2Branches()
2015     if (FindCmpForCBZ(Br, Cmp, ExitBB) && TryConvertToLE(Br, Cmp)) {  in optimizeThumb2Branches()
2019       FindCmpForCBZ(Br, Cmp, DestBB);  in optimizeThumb2Branches()
2020       MadeChange |= TryShrinkBranch(Br);  in optimizeThumb2Branches()
2023     unsigned Opcode = Br.MI->getOpcode();  in optimizeThumb2Branches()
2032     MachineBasicBlock::iterator KillMI = Br.MI;  in optimizeThumb2Branches()
2044     LLVM_DEBUG(dbgs() << "Fold: " << *Cmp.MI << " and: " << *Br.MI);  in optimizeThumb2Branches()
2046         BuildMI(*MBB, Br.MI, Br.MI->getDebugLoc(), TII->get(Cmp.NewOpc))  in optimizeThumb2Branches()
2049             .addMBB(DestBB, Br.MI->getOperand(0).getTargetFlags());  in optimizeThumb2Branches()
2053     if (Br.MI->getOpcode() == ARM::tBcc) {  in optimizeThumb2Branches()
2054       Br.MI->eraseFromParent();  in optimizeThumb2Branches()
2055       Br.MI = NewBR;  in optimizeThumb2Branches()