From f94d68398a6a21bb73a7f12a4a6e778c12b9f630 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Wed, 3 Mar 2010 21:18:38 +0000 Subject: Add MachineRegisterInfo::hasOneUse and hasOneNonDBGUse. llvm-svn: 97663 --- llvm/lib/CodeGen/MachineRegisterInfo.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'llvm/lib/CodeGen/MachineRegisterInfo.cpp') 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 { -- cgit v1.2.3