diff options
| -rw-r--r-- | llvm/lib/CodeGen/MachineBasicBlock.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/MachineBasicBlock.cpp b/llvm/lib/CodeGen/MachineBasicBlock.cpp index 49181e338a1..6a242d8d070 100644 --- a/llvm/lib/CodeGen/MachineBasicBlock.cpp +++ b/llvm/lib/CodeGen/MachineBasicBlock.cpp @@ -1404,9 +1404,8 @@ MachineBasicBlock::computeRegisterLiveness(const TargetRegisterInfo *TRI, // no successor has it live in. if (I == end()) { for (MachineBasicBlock *S : successors()) { - for (MCSubRegIterator SubReg(Reg, TRI, /*IncludeSelf*/true); - SubReg.isValid(); ++SubReg) { - if (S->isLiveIn(*SubReg)) + for (const MachineBasicBlock::RegisterMaskPair &LI : S->liveins()) { + if (TRI->regsOverlap(LI.PhysReg, Reg)) return LQR_Live; } } @@ -1460,9 +1459,8 @@ MachineBasicBlock::computeRegisterLiveness(const TargetRegisterInfo *TRI, // Did we get to the start of the block? if (I == begin()) { // If so, the register's state is definitely defined by the live-in state. - for (MCRegAliasIterator RAI(Reg, TRI, /*IncludeSelf=*/true); RAI.isValid(); - ++RAI) - if (isLiveIn(*RAI)) + for (const MachineBasicBlock::RegisterMaskPair &LI : liveins()) + if (TRI->regsOverlap(LI.PhysReg, Reg)) return LQR_Live; return LQR_Dead; |
