diff options
Diffstat (limited to 'llvm/lib/CodeGen/GlobalISel/Legalizer.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/GlobalISel/Legalizer.cpp | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp b/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp index 849363caf09..657ddb30791 100644 --- a/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp +++ b/llvm/lib/CodeGen/GlobalISel/Legalizer.cpp @@ -171,21 +171,34 @@ bool Legalizer::runOnMachineFunction(MachineFunction &MF) { // and are assumed to be legal. if (!isPreISelGenericOpcode(MI->getOpcode())) continue; - - auto Res = Helper.legalizeInstr(*MI); - - // Error out if we couldn't legalize this instruction. We may want to fall - // back to DAG ISel instead in the future. - if (Res == LegalizerHelper::UnableToLegalize) { - reportGISelFailure(MF, TPC, MORE, "gisel-legalize", - "unable to legalize instruction", *MI); - return false; - } - - Changed |= Res == LegalizerHelper::Legalized; + SmallVector<MachineInstr *, 4> WorkList; + Helper.MIRBuilder.recordInsertions( + [&](MachineInstr *MI) { WorkList.push_back(MI); }); + WorkList.push_back(&*MI); + + LegalizerHelper::LegalizeResult Res; + unsigned Idx = 0; + do { + Res = Helper.legalizeInstrStep(*WorkList[Idx]); + // Error out if we couldn't legalize this instruction. We may want to + // fall + // back to DAG ISel instead in the future. + if (Res == LegalizerHelper::UnableToLegalize) { + Helper.MIRBuilder.stopRecordingInsertions(); + if (Res == LegalizerHelper::UnableToLegalize) { + reportGISelFailure(MF, TPC, MORE, "gisel-legalize", + "unable to legalize instruction", + *WorkList[Idx]); + return false; + } + } + Changed |= Res == LegalizerHelper::Legalized; + ++Idx; + } while (Idx < WorkList.size()); + + Helper.MIRBuilder.stopRecordingInsertions(); } - MachineRegisterInfo &MRI = MF.getRegInfo(); const TargetInstrInfo &TII = *MF.getSubtarget().getInstrInfo(); for (auto &MBB : MF) { |
