diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineCSE.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp index d05e7f542d0..2df6d40d929 100644 --- a/llvm/lib/CodeGen/MachineCSE.cpp +++ b/llvm/lib/CodeGen/MachineCSE.cpp @@ -799,6 +799,8 @@ bool MachineCSE::ProcessBlockPRE(MachineDominatorTree *DT, !DT->properlyDominates(MBB, MBB1) && "MBB cannot properly dominate MBB1 while DFS through dominators tree!"); auto CMBB = DT->findNearestCommonDominator(MBB, MBB1); + if (!CMBB->isLegalToHoistInto()) + continue; // Two instrs are partial redundant if their basic blocks are reachable // from one to another but one doesn't dominate another. |
