diff options
| -rw-r--r-- | lib/Target/PowerPC/PPCInstrInfo.cpp | 11 | ||||
| -rw-r--r-- | lib/Target/PowerPC/PPCInstrInfo.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCInstrInfo.cpp b/lib/Target/PowerPC/PPCInstrInfo.cpp index 63188466be..9876e3cdad 100644 --- a/lib/Target/PowerPC/PPCInstrInfo.cpp +++ b/lib/Target/PowerPC/PPCInstrInfo.cpp @@ -259,6 +259,17 @@ void PPCInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, BuildMI(&MBB, PPC::B, 1).addMBB(FBB); } +bool PPCInstrInfo::BlockHasNoFallThrough(MachineBasicBlock &MBB) const { + if (MBB.empty()) return false; + + switch (MBB.back().getOpcode()) { + case PPC::B: // Uncond branch. + case PPC::BCTR: // Indirect branch. + return true; + default: return false; + } +} + bool PPCInstrInfo:: ReverseBranchCondition(std::vector<MachineOperand> &Cond) const { assert(Cond.size() == 2 && "Invalid PPC branch opcode!"); diff --git a/lib/Target/PowerPC/PPCInstrInfo.h b/lib/Target/PowerPC/PPCInstrInfo.h index dc16aed4dc..769474b503 100644 --- a/lib/Target/PowerPC/PPCInstrInfo.h +++ b/lib/Target/PowerPC/PPCInstrInfo.h @@ -110,6 +110,7 @@ public: virtual void InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, MachineBasicBlock *FBB, const std::vector<MachineOperand> &Cond) const; + virtual bool BlockHasNoFallThrough(MachineBasicBlock &MBB) const; virtual bool ReverseBranchCondition(std::vector<MachineOperand> &Cond) const; |