Changes in directory llvm/lib/Target/PowerPC:
PPCInstrInfo.cpp updated: 1.28 -> 1.29
PPCInstrInfo.h updated: 1.18 -> 1.19
---
Log message:
implement the BlockHasNoFallThrough hook
---
Diffs of the changes: (+12 -0)
PPCInstrInfo.cpp | 11 +++++++++++
PPCInstrInfo.h | 1 +
2 files changed, 12 insertions(+)
Index: llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
diff -u llvm/lib/Target/PowerPC/PPCInstrInfo.cpp:1.28
llvm/lib/Target/PowerPC/PPCInstrInfo.cpp:1.29
--- llvm/lib/Target/PowerPC/PPCInstrInfo.cpp:1.28 Sat Oct 21 01:03:11 2006
+++ llvm/lib/Target/PowerPC/PPCInstrInfo.cpp Sat Oct 28 12:35:02 2006
@@ -259,6 +259,17 @@
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!");
Index: llvm/lib/Target/PowerPC/PPCInstrInfo.h
diff -u llvm/lib/Target/PowerPC/PPCInstrInfo.h:1.18
llvm/lib/Target/PowerPC/PPCInstrInfo.h:1.19
--- llvm/lib/Target/PowerPC/PPCInstrInfo.h:1.18 Tue Oct 17 17:39:33 2006
+++ llvm/lib/Target/PowerPC/PPCInstrInfo.h Sat Oct 28 12:35:02 2006
@@ -110,6 +110,7 @@
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;
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