Target/AMDGPU/SIOptimizeVGPRLiveRange.cpp

115       MachineBasicBlock *LoopHeader, MachineBasicBlock *LoopEnd,
137       Register Reg, MachineBasicBlock *LoopHeader,
331     MachineBasicBlock *LoopHeader, MachineBasicBlock *LoopEnd,
337   auto *MBB = LoopHeader;
348     if ((MBB != LoopHeader && MBB->pred_size() != 1) ||
349         (MBB == LoopHeader && MBB->pred_size() != 2) || MBB->succ_size() != 1) {
544     Register Reg, MachineBasicBlock *LoopHeader,
564       BuildMI(*LoopHeader, LoopHeader->getFirstNonPHI(), DebugLoc(),
566   for (auto *Pred : LoopHeader->predecessors()) {
602     } else if (Block != LoopHeader) {
673         auto *LoopHeader = MI.getOperand(0).getMBB();
677                           << printMBBReference(*LoopHeader) << '\n');
683         collectWaterfallCandidateRegisters(LoopHeader, LoopEnd, CandidateRegs,
688           optimizeWaterfallLiveRange(Reg, LoopHeader, Blocks, Instructions);