diff options
| -rw-r--r-- | lib/CodeGen/PreAllocSplitting.cpp | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp index 4044b73..8f223b36 100644 --- a/lib/CodeGen/PreAllocSplitting.cpp +++ b/lib/CodeGen/PreAllocSplitting.cpp @@ -89,8 +89,6 @@ namespace { AU.addPreservedID(StrongPHIEliminationID); else AU.addPreservedID(PHIEliminationID); - AU.addRequired<MachineLoopInfo>(); - AU.addPreserved<MachineLoopInfo>(); MachineFunctionPass::getAnalysisUsage(AU); } @@ -635,14 +633,6 @@ bool PreAllocSplitting::SplitRegLiveInterval(LiveInterval *LI) { assert(0 && "Val# is defined by a dead def?"); abort(); } - - // Pre-splitting a vreg that does not have a PHI kill across a barrier - // that is within a loop can potentially create a join that was not - // present before, which would make updating the live intervals very - // difficult. Bailout instead. - MachineLoopInfo& MLI = getAnalysis<MachineLoopInfo>(); - if (!ValNo->hasPHIKill && MLI.getLoopFor(BarrierMBB)) - return false; // FIXME: For now, if definition is rematerializable, do not split. MachineInstr *DefMI = (ValNo->def != ~0U) |