NearestGapPos     681 src/lithium-allocator.cc   int index = chunk_->NearestGapPos(last_instruction);
NearestGapPos    1182 src/lithium-allocator.cc   LGap* gap = GapAt(chunk_->NearestGapPos(pos.InstructionIndex()));
NearestGapPos     649 src/lithium.h    int NearestGapPos(int index) const;