diff options
Diffstat (limited to 'contrib/llvm/lib/Target/AMDGPU/AMDILCFGStructurizer.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/AMDGPU/AMDILCFGStructurizer.cpp | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/contrib/llvm/lib/Target/AMDGPU/AMDILCFGStructurizer.cpp b/contrib/llvm/lib/Target/AMDGPU/AMDILCFGStructurizer.cpp index c9b25a1..d918ac3 100644 --- a/contrib/llvm/lib/Target/AMDGPU/AMDILCFGStructurizer.cpp +++ b/contrib/llvm/lib/Target/AMDGPU/AMDILCFGStructurizer.cpp @@ -1719,7 +1719,6 @@ MachineBasicBlock * AMDGPUCFGStructurizer::normalizeInfiniteLoopExit(MachineLoop* LoopRep) { MachineBasicBlock *LoopHeader = LoopRep->getHeader(); MachineBasicBlock *LoopLatch = LoopRep->getLoopLatch(); - const TargetRegisterClass * I32RC = TRI->getCFGStructurizerRegClass(MVT::i32); if (!LoopHeader || !LoopLatch) return nullptr; @@ -1732,18 +1731,9 @@ AMDGPUCFGStructurizer::normalizeInfiniteLoopExit(MachineLoop* LoopRep) { FuncRep->push_back(DummyExitBlk); //insert to function SHOWNEWBLK(DummyExitBlk, "DummyExitBlock to normalize infiniteLoop: "); DEBUG(dbgs() << "Old branch instr: " << *BranchMI << "\n";); - MachineBasicBlock::iterator I = BranchMI; - unsigned ImmReg = FuncRep->getRegInfo().createVirtualRegister(I32RC); - llvm_unreachable("Extra register needed to handle CFG"); - MachineInstr *NewMI = insertInstrBefore(I, AMDGPU::BRANCH_COND_i32); - MachineInstrBuilder MIB(*FuncRep, NewMI); - MIB.addMBB(LoopHeader); - MIB.addReg(ImmReg, false); - SHOWNEWINSTR(NewMI); - BranchMI->eraseFromParent(); - LoopLatch->addSuccessor(DummyExitBlk); - - return DummyExitBlk; + LLVMContext &Ctx = LoopHeader->getParent()->getFunction()->getContext(); + Ctx.emitError("Extra register needed to handle CFG"); + return nullptr; } void AMDGPUCFGStructurizer::removeUnconditionalBranch(MachineBasicBlock *MBB) { |
