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| author | Evan Cheng <evan.cheng@apple.com> | 2010-03-03 21:18:38 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-03-03 21:18:38 +0000 |
| commit | 1423c70b8f1b1a757c640fac9a17cb015012e8e9 (patch) | |
| tree | fded141d85e944a3c236f9f45594ddc6b5d7e998 /lib/CodeGen/MachineRegisterInfo.cpp | |
| parent | 14c85cbf541ec8940127474c20d8f1b5d5706bfe (diff) | |
| download | llvm-1423c70b8f1b1a757c640fac9a17cb015012e8e9.tar.gz llvm-1423c70b8f1b1a757c640fac9a17cb015012e8e9.tar.bz2 llvm-1423c70b8f1b1a757c640fac9a17cb015012e8e9.tar.xz | |
Add MachineRegisterInfo::hasOneUse and hasOneNonDBGUse.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97663 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineRegisterInfo.cpp')
| -rw-r--r-- | lib/CodeGen/MachineRegisterInfo.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineRegisterInfo.cpp b/lib/CodeGen/MachineRegisterInfo.cpp index b31973e04f..d9ab6773a5 100644 --- a/lib/CodeGen/MachineRegisterInfo.cpp +++ b/lib/CodeGen/MachineRegisterInfo.cpp @@ -116,6 +116,19 @@ MachineInstr *MachineRegisterInfo::getVRegDef(unsigned Reg) const { return 0; } +bool MachineRegisterInfo::hasOneUse(unsigned RegNo) const { + use_iterator UI = use_begin(RegNo); + if (UI == use_end()) + return false; + return ++UI == use_end(); +} + +bool MachineRegisterInfo::hasOneNonDBGUse(unsigned RegNo) const { + use_nodbg_iterator UI = use_nodbg_begin(RegNo); + if (UI == use_nodbg_end()) + return false; + return ++UI == use_nodbg_end(); +} #ifndef NDEBUG void MachineRegisterInfo::dumpUses(unsigned Reg) const { |