diff options
Diffstat (limited to 'llvm/lib/CodeGen/PHIElimination.h')
| -rw-r--r-- | llvm/lib/CodeGen/PHIElimination.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/PHIElimination.h b/llvm/lib/CodeGen/PHIElimination.h index edc2d36670b..94716eef6c5 100644 --- a/llvm/lib/CodeGen/PHIElimination.h +++ b/llvm/lib/CodeGen/PHIElimination.h @@ -110,11 +110,12 @@ namespace llvm { MachineBasicBlock *SplitCriticalEdge(MachineBasicBlock *A, MachineBasicBlock *B); - // FindCopyInsertPoint - Find a safe place in MBB to insert a copy from - // SrcReg. This needs to be after any def or uses of SrcReg, but before - // any subsequent point where control flow might jump out of the basic - // block. + /// FindCopyInsertPoint - Find a safe place in MBB to insert a copy from + /// SrcReg when following the CFG edge to SuccMBB. This needs to be after + /// any def of SrcReg, but before any subsequent point where control flow + /// might jump out of the basic block. MachineBasicBlock::iterator FindCopyInsertPoint(MachineBasicBlock &MBB, + MachineBasicBlock &SuccMBB, unsigned SrcReg); // SkipPHIsAndLabels - Copies need to be inserted after phi nodes and |
