diff options
| -rw-r--r-- | llvm/include/llvm/Target/TargetInstrInfo.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/llvm/include/llvm/Target/TargetInstrInfo.h b/llvm/include/llvm/Target/TargetInstrInfo.h index 1ba6b2f2999..ee3b21ad695 100644 --- a/llvm/include/llvm/Target/TargetInstrInfo.h +++ b/llvm/include/llvm/Target/TargetInstrInfo.h @@ -16,6 +16,7 @@ #include "llvm/Target/TargetInstrDesc.h" #include "llvm/CodeGen/MachineFunction.h" +#include "llvm/CodeGen/MachineMemOperand.h" namespace llvm { @@ -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; } @@ -543,6 +547,13 @@ public: /// length. virtual unsigned getInlineAsmLength(const char *Str, const MCAsmInfo &MAI) const; + + /// TailDuplicationLimit - Returns the limit on the number of instructions + /// in basic block MBB beyond which it will not be tail-duplicated. + virtual unsigned TailDuplicationLimit(const MachineBasicBlock &MBB, + unsigned DefaultLimit) const { + return DefaultLimit; + } }; /// TargetInstrInfoImpl - This is the default implementation of |
