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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 | f94d68398a6a21bb73a7f12a4a6e778c12b9f630 (patch) | |
| tree | 175142dbdbf87b784788d7ffb7076f777c32237d /llvm/lib/CodeGen/MachineRegisterInfo.cpp | |
| parent | 86ec2e8436cee014cf3193ae1530840a295f7389 (diff) | |
| download | bcm5719-llvm-f94d68398a6a21bb73a7f12a4a6e778c12b9f630.tar.gz bcm5719-llvm-f94d68398a6a21bb73a7f12a4a6e778c12b9f630.zip | |
Add MachineRegisterInfo::hasOneUse and hasOneNonDBGUse.
llvm-svn: 97663
Diffstat (limited to 'llvm/lib/CodeGen/MachineRegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineRegisterInfo.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineRegisterInfo.cpp b/llvm/lib/CodeGen/MachineRegisterInfo.cpp index b31973e04fd..d9ab6773a53 100644 --- a/llvm/lib/CodeGen/MachineRegisterInfo.cpp +++ b/llvm/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 { |
