diff options
Diffstat (limited to 'include/llvm/CodeGen')
| -rw-r--r-- | include/llvm/CodeGen/MachineBasicBlock.h | 7 | ||||
| -rw-r--r-- | include/llvm/CodeGen/TargetInstrInfo.h | 9 |
2 files changed, 13 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h index 0c9110cbaa876..89210e16629e9 100644 --- a/include/llvm/CodeGen/MachineBasicBlock.h +++ b/include/llvm/CodeGen/MachineBasicBlock.h @@ -449,6 +449,13 @@ public: /// Replace successor OLD with NEW and update probability info. void replaceSuccessor(MachineBasicBlock *Old, MachineBasicBlock *New); + /// Copy a successor (and any probability info) from original block to this + /// block's. Uses an iterator into the original blocks successors. + /// + /// This is useful when doing a partial clone of successors. Afterward, the + /// probabilities may need to be normalized. + void copySuccessor(MachineBasicBlock *Orig, succ_iterator I); + /// Transfers all the successors from MBB to this machine basic block (i.e., /// copies all the successors FromMBB and remove all the successors from /// FromMBB). diff --git a/include/llvm/CodeGen/TargetInstrInfo.h b/include/llvm/CodeGen/TargetInstrInfo.h index 6b5404be35d36..57dee3bb44b3a 100644 --- a/include/llvm/CodeGen/TargetInstrInfo.h +++ b/include/llvm/CodeGen/TargetInstrInfo.h @@ -421,7 +421,8 @@ public: /// Build the equivalent inputs of a REG_SEQUENCE for the given \p MI /// and \p DefIdx. /// \p [out] InputRegs of the equivalent REG_SEQUENCE. Each element of - /// the list is modeled as <Reg:SubReg, SubIdx>. + /// the list is modeled as <Reg:SubReg, SubIdx>. Operands with the undef + /// flag are not added to this list. /// E.g., REG_SEQUENCE %1:sub1, sub0, %2, sub1 would produce /// two elements: /// - %1:sub1, sub0 @@ -446,7 +447,8 @@ public: /// - %1:sub1, sub0 /// /// \returns true if it is possible to build such an input sequence - /// with the pair \p MI, \p DefIdx. False otherwise. + /// with the pair \p MI, \p DefIdx and the operand has no undef flag set. + /// False otherwise. /// /// \pre MI.isExtractSubreg() or MI.isExtractSubregLike(). /// @@ -465,7 +467,8 @@ public: /// - InsertedReg: %1:sub1, sub3 /// /// \returns true if it is possible to build such an input sequence - /// with the pair \p MI, \p DefIdx. False otherwise. + /// with the pair \p MI, \p DefIdx and the operand has no undef flag set. + /// False otherwise. /// /// \pre MI.isInsertSubreg() or MI.isInsertSubregLike(). /// |