diff options
Diffstat (limited to 'llvm/lib/CodeGen/CalcSpillWeights.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/CalcSpillWeights.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/CalcSpillWeights.cpp b/llvm/lib/CodeGen/CalcSpillWeights.cpp index 57541182cab..7f89601da23 100644 --- a/llvm/lib/CodeGen/CalcSpillWeights.cpp +++ b/llvm/lib/CodeGen/CalcSpillWeights.cpp @@ -287,9 +287,11 @@ float VirtRegAuxInfo::weightCalcHelper(LiveInterval &li, SlotIndex *start, if (TargetHint.first == 0 && TargetHint.second) mri.clearSimpleHint(li.reg); + std::set<unsigned> HintedRegs; for (auto &Hint : CopyHints) { - if (TargetHint.first != 0 && Hint.Reg == TargetHint.second) - // Don't add again the target-type hint. + if (!HintedRegs.insert(Hint.Reg).second || + (TargetHint.first != 0 && Hint.Reg == TargetHint.second)) + // Don't add the same reg twice or the target-type hint again. continue; mri.addRegAllocationHint(li.reg, Hint.Reg); if (!tri.enableMultipleCopyHints()) |
