diff options
| -rw-r--r-- | lib/Target/ARM/Thumb2ITBlockPass.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/Thumb2ITBlockPass.cpp b/lib/Target/ARM/Thumb2ITBlockPass.cpp index ecb4c2f0e5..e2166ffc32 100644 --- a/lib/Target/ARM/Thumb2ITBlockPass.cpp +++ b/lib/Target/ARM/Thumb2ITBlockPass.cpp @@ -15,6 +15,7 @@ #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineInstrBundle.h" #include "llvm/CodeGen/MachineFunctionPass.h" +#include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/ADT/SmallSet.h" #include "llvm/ADT/Statistic.h" using namespace llvm; @@ -258,6 +259,9 @@ bool Thumb2ITBlockPass::runOnMachineFunction(MachineFunction &Fn) { if (!AFI->isThumbFunction()) return false; + // IT block insertion invalidates accurate register liveness. + Fn.getRegInfo().invalidateLiveness(); + bool Modified = false; for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E; ) { MachineBasicBlock &MBB = *MFI; |