diff options
Diffstat (limited to 'lib/CodeGen/MachineBasicBlock.cpp')
| -rw-r--r-- | lib/CodeGen/MachineBasicBlock.cpp | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp index e2ce642cfd6d..9215bd583b59 100644 --- a/lib/CodeGen/MachineBasicBlock.cpp +++ b/lib/CodeGen/MachineBasicBlock.cpp @@ -378,7 +378,7 @@ bool MachineBasicBlock::canFallThrough() { MachineBasicBlock *TBB = 0, *FBB = 0; SmallVector<MachineOperand, 4> Cond; const TargetInstrInfo *TII = getParent()->getTarget().getInstrInfo(); - if (TII->AnalyzeBranch(*this, TBB, FBB, Cond, true)) { + if (TII->AnalyzeBranch(*this, TBB, FBB, Cond)) { // If we couldn't analyze the branch, examine the last instruction. // If the block doesn't end in a known control barrier, assume fallthrough // is possible. The isPredicable check is needed because this code can be @@ -524,7 +524,26 @@ bool MachineBasicBlock::CorrectExtraCFGEdges(MachineBasicBlock *DestA, return MadeChange; } +/// findDebugLoc - find the next valid DebugLoc starting at MBBI, skipping +/// any DEBUG_VALUE instructions. Return UnknownLoc if there is none. +DebugLoc +MachineBasicBlock::findDebugLoc(MachineBasicBlock::iterator &MBBI) { + DebugLoc DL; + MachineBasicBlock::iterator E = end(); + if (MBBI != E) { + // Skip debug declarations, we don't want a DebugLoc from them. + MachineBasicBlock::iterator MBBI2 = MBBI; + while (MBBI2 != E && + MBBI2->getOpcode()==TargetInstrInfo::DEBUG_VALUE) + MBBI2++; + if (MBBI2 != E) + DL = MBBI2->getDebugLoc(); + } + return DL; +} + void llvm::WriteAsOperand(raw_ostream &OS, const MachineBasicBlock *MBB, bool t) { OS << "BB#" << MBB->getNumber(); } + |