diff options
Diffstat (limited to 'include/llvm/Target/TargetInstrInfo.h')
| -rw-r--r-- | include/llvm/Target/TargetInstrInfo.h | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h index 1ba6b2f29992..1bcd6fd8366e 100644 --- a/include/llvm/Target/TargetInstrInfo.h +++ b/include/llvm/Target/TargetInstrInfo.h @@ -26,6 +26,7 @@ class LiveVariables; class CalleeSavedInfo; class SDNode; class SelectionDAG; +class MachineMemOperand; template<class T> class SmallVectorImpl; @@ -182,11 +183,13 @@ public: /// hasLoadFromStackSlot - If the specified machine instruction has /// a load from a stack slot, return true along with the FrameIndex - /// of the loaded stack slot. If not, return false. Unlike + /// of the loaded stack slot and the machine mem operand containing + /// the reference. If not, return false. Unlike /// isLoadFromStackSlot, this returns true for any instructions that /// loads from the stack. This is just a hint, as some cases may be /// missed. virtual bool hasLoadFromStackSlot(const MachineInstr *MI, + const MachineMemOperand *&MMO, int &FrameIndex) const { return 0; } @@ -205,17 +208,18 @@ public: /// stack locations as well. This uses a heuristic so it isn't /// reliable for correctness. virtual unsigned isStoreToStackSlotPostFE(const MachineInstr *MI, - int &FrameIndex) const { + int &FrameIndex) const { return 0; } /// hasStoreToStackSlot - If the specified machine instruction has a /// store to a stack slot, return true along with the FrameIndex of - /// the loaded stack slot. If not, return false. Unlike - /// isStoreToStackSlot, this returns true for any instructions that - /// loads from the stack. This is just a hint, as some cases may be - /// missed. + /// the loaded stack slot and the machine mem operand containing the + /// reference. If not, return false. Unlike isStoreToStackSlot, + /// this returns true for any instructions that loads from the + /// stack. This is just a hint, as some cases may be missed. virtual bool hasStoreToStackSlot(const MachineInstr *MI, + const MachineMemOperand *&MMO, int &FrameIndex) const { return 0; } @@ -282,11 +286,10 @@ public: /// just return false, leaving TBB/FBB null. /// 2. If this block ends with only an unconditional branch, it sets TBB to be /// the destination block. - /// 3. If this block ends with an conditional branch and it falls through to - /// a successor block, it sets TBB to be the branch destination block and - /// a list of operands that evaluate the condition. These - /// operands can be passed to other TargetInstrInfo methods to create new - /// branches. + /// 3. If this block ends with a conditional branch and it falls through to a + /// successor block, it sets TBB to be the branch destination block and a + /// list of operands that evaluate the condition. These operands can be + /// passed to other TargetInstrInfo methods to create new branches. /// 4. If this block ends with a conditional branch followed by an /// unconditional branch, it returns the 'true' destination in TBB, the /// 'false' destination in FBB, and a list of operands that evaluate the @@ -461,14 +464,6 @@ public: return 0; } - /// BlockHasNoFallThrough - Return true if the specified block does not - /// fall-through into its successor block. This is primarily used when a - /// branch is unanalyzable. It is useful for things like unconditional - /// indirect branches (jump tables). - virtual bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const { - return false; - } - /// ReverseBranchCondition - Reverses the branch condition of the specified /// condition list, returning false on success and true if it cannot be /// reversed. |
