diff options
Diffstat (limited to 'include/llvm/CodeGen/MachineRegisterInfo.h')
-rw-r--r-- | include/llvm/CodeGen/MachineRegisterInfo.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h index 2e7f034..abb04de 100644 --- a/include/llvm/CodeGen/MachineRegisterInfo.h +++ b/include/llvm/CodeGen/MachineRegisterInfo.h @@ -52,6 +52,9 @@ private: /// accurate when after this flag is cleared. bool TracksLiveness; + /// True if subregister liveness is tracked. + bool TracksSubRegLiveness; + /// VRegInfo - Information we keep for each virtual register. /// /// Each element in this list contains the register class of the vreg and the @@ -120,8 +123,8 @@ private: /// second element. std::vector<std::pair<unsigned, unsigned> > LiveIns; - MachineRegisterInfo(const MachineRegisterInfo&) LLVM_DELETED_FUNCTION; - void operator=(const MachineRegisterInfo&) LLVM_DELETED_FUNCTION; + MachineRegisterInfo(const MachineRegisterInfo&) = delete; + void operator=(const MachineRegisterInfo&) = delete; public: explicit MachineRegisterInfo(const MachineFunction *MF); @@ -179,6 +182,12 @@ public: /// information. void invalidateLiveness() { TracksLiveness = false; } + bool tracksSubRegLiveness() const { return TracksSubRegLiveness; } + + void enableSubRegLiveness(bool Enable = true) { + TracksSubRegLiveness = Enable; + } + //===--------------------------------------------------------------------===// // Register Info //===--------------------------------------------------------------------===// @@ -584,7 +593,7 @@ public: /// virtual register, for example after removing instructions or splitting /// the live range. /// - bool recomputeRegClass(unsigned Reg, const TargetMachine&); + bool recomputeRegClass(unsigned Reg); /// createVirtualRegister - Create and return a new virtual register in the /// function with the specified register class. @@ -768,6 +777,10 @@ public: const TargetRegisterInfo &TRI, const TargetInstrInfo &TII); + /// Returns a mask covering all bits that can appear in lane masks of + /// subregisters of the virtual register @p Reg. + unsigned getMaxLaneMaskForVReg(unsigned Reg) const; + /// defusechain_iterator - This class provides iterator support for machine /// operands in the function that use or define a specific register. If /// ReturnUses is true it returns uses of registers, if ReturnDefs is true it |