diff options
| -rw-r--r-- | include/llvm/CodeGen/MachineRegisterInfo.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h index 131231e5ba..fd7431ff0b 100644 --- a/include/llvm/CodeGen/MachineRegisterInfo.h +++ b/include/llvm/CodeGen/MachineRegisterInfo.h @@ -93,6 +93,20 @@ public: /// specified register (it may be live-in). bool reg_empty(unsigned RegNo) const { return reg_begin(RegNo) == reg_end(); } + /// reg_nodbg_iterator/reg_nodbg_begin/reg_nodbg_end - Walk all defs and uses + /// of the specified register, skipping those marked as Debug. + typedef defusechain_iterator<true,true,true> reg_nodbg_iterator; + reg_nodbg_iterator reg_nodbg_begin(unsigned RegNo) const { + return reg_nodbg_iterator(getRegUseDefListHead(RegNo)); + } + static reg_nodbg_iterator reg_nodbg_end() { return reg_nodbg_iterator(0); } + + /// reg_nodbg_empty - Return true if the only instructions using or defining + /// Reg are Debug instructions. + bool reg_nodbg_empty(unsigned RegNo) const { + return reg_nodbg_begin(RegNo) == reg_nodbg_end(); + } + /// def_iterator/def_begin/def_end - Walk all defs of the specified register. typedef defusechain_iterator<false,true,false> def_iterator; def_iterator def_begin(unsigned RegNo) const { |