/// 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 {