diff options
Diffstat (limited to 'llvm/lib/CodeGen/ReachingDefAnalysis.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/ReachingDefAnalysis.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/ReachingDefAnalysis.cpp b/llvm/lib/CodeGen/ReachingDefAnalysis.cpp index dd70f91..4e18c7d 100644 --- a/llvm/lib/CodeGen/ReachingDefAnalysis.cpp +++ b/llvm/lib/CodeGen/ReachingDefAnalysis.cpp @@ -272,8 +272,10 @@ int ReachingDefAnalysis::getReachingDef(MachineInstr *MI, int PhysReg) const { } MachineInstr* ReachingDefAnalysis::getReachingLocalMIDef(MachineInstr *MI, - int PhysReg) const { - return getInstFromId(MI->getParent(), getReachingDef(MI, PhysReg)); + int PhysReg) const { + return hasLocalDefBefore(MI, PhysReg) + ? getInstFromId(MI->getParent(), getReachingDef(MI, PhysReg)) + : nullptr; } bool ReachingDefAnalysis::hasSameReachingDef(MachineInstr *A, MachineInstr *B, |