diff options
Diffstat (limited to 'lib/CodeGen/LiveVariables.cpp')
| -rw-r--r-- | lib/CodeGen/LiveVariables.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp index 82016ed591..dbe650c0af 100644 --- a/lib/CodeGen/LiveVariables.cpp +++ b/lib/CodeGen/LiveVariables.cpp @@ -29,6 +29,7 @@ #include "llvm/CodeGen/LiveVariables.h" #include "llvm/CodeGen/MachineInstr.h" #include "llvm/CodeGen/MachineRegisterInfo.h" +#include "llvm/CodeGen/Passes.h" #include "llvm/Target/TargetRegisterInfo.h" #include "llvm/Target/TargetInstrInfo.h" #include "llvm/Target/TargetMachine.h" @@ -43,6 +44,12 @@ using namespace llvm; char LiveVariables::ID = 0; static RegisterPass<LiveVariables> X("livevars", "Live Variable Analysis"); + +void LiveVariables::getAnalysisUsage(AnalysisUsage &AU) const { + AU.addRequiredID(UnreachableMachineBlockElimID); + AU.setPreservesAll(); +} + void LiveVariables::VarInfo::dump() const { cerr << " Alive in blocks: "; for (unsigned i = 0, e = AliveBlocks.size(); i != e; ++i) |