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Add reg_nodbg_iterator 

llvm-svn: 103856
This commit is contained in:
Jakob Stoklund Olesen 2010-05-15 02:52:58 +00:00
parent 3d214cdfaf
commit 3ced97c0a0
1 changed files with 14 additions and 0 deletions
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14
llvm/include/llvm/CodeGen/MachineRegisterInfo.h
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@ -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 {