diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstrInfo.cpp | 34 | ||||
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstrInfo.h | 7 |
2 files changed, 41 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp index 503bda08a9c..4953892ed4a 100644 --- a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp +++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp @@ -1085,6 +1085,32 @@ bool AArch64InstrInfo::isFalkorShiftExtFast(const MachineInstr &MI) const { } } +bool AArch64InstrInfo::isSEHInstruction(const MachineInstr &MI) { + unsigned Opc = MI.getOpcode(); + switch (Opc) { + default: + return false; + case AArch64::SEH_StackAlloc: + case AArch64::SEH_SaveFPLR: + case AArch64::SEH_SaveFPLR_X: + case AArch64::SEH_SaveReg: + case AArch64::SEH_SaveReg_X: + case AArch64::SEH_SaveRegP: + case AArch64::SEH_SaveRegP_X: + case AArch64::SEH_SaveFReg: + case AArch64::SEH_SaveFReg_X: + case AArch64::SEH_SaveFRegP: + case AArch64::SEH_SaveFRegP_X: + case AArch64::SEH_SetFP: + case AArch64::SEH_AddFP: + case AArch64::SEH_Nop: + case AArch64::SEH_PrologEnd: + case AArch64::SEH_EpilogStart: + case AArch64::SEH_EpilogEnd: + return true; + } +} + bool AArch64InstrInfo::isCoalescableExtInstr(const MachineInstr &MI, unsigned &SrcReg, unsigned &DstReg, unsigned &SubIdx) const { @@ -1137,6 +1163,14 @@ bool AArch64InstrInfo::areMemAccessesTriviallyDisjoint( return false; } +bool AArch64InstrInfo::isSchedulingBoundary(const MachineInstr &MI, + const MachineBasicBlock *MBB, + const MachineFunction &MF) const { + if (TargetInstrInfo::isSchedulingBoundary(MI, MBB, MF)) + return true; + return isSEHInstruction(MI); +} + /// analyzeCompare - For a comparison instruction, return the source registers /// in SrcReg and SrcReg2, and the value it compares against in CmpValue. /// Return true if the comparison instruction can be analyzed. diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.h b/llvm/lib/Target/AArch64/AArch64InstrInfo.h index 05721336df7..e8e93e64200 100644 --- a/llvm/lib/Target/AArch64/AArch64InstrInfo.h +++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.h @@ -189,6 +189,10 @@ public: unsigned FalseReg) const override; void getNoop(MCInst &NopInst) const override; + bool isSchedulingBoundary(const MachineInstr &MI, + const MachineBasicBlock *MBB, + const MachineFunction &MF) const override; + /// analyzeCompare - For a comparison instruction, return the source registers /// in SrcReg and SrcReg2, and the value it compares against in CmpValue. /// Return true if the comparison instruction can be analyzed. @@ -262,6 +266,9 @@ public: /// Returns true if the instruction has a shift by immediate that can be /// executed in one cycle less. bool isFalkorShiftExtFast(const MachineInstr &MI) const; + /// Return true if the instructions is a SEH instruciton used for unwinding + /// on Windows. + static bool isSEHInstruction(const MachineInstr &MI); private: /// Sets the offsets on outlined instructions in \p MBB which use SP |
