From ce049437d6986cfb4c0dba6bf99cadd8c301351a Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Wed, 18 Jun 2008 07:47:55 +0000 Subject: [PATCH] Add MachineRegisterInfo::use_empty. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52451 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/CodeGen/MachineRegisterInfo.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h index f5fda9bfc02..b93794c1be2 100644 --- a/include/llvm/CodeGen/MachineRegisterInfo.h +++ b/include/llvm/CodeGen/MachineRegisterInfo.h @@ -90,6 +90,10 @@ public: } static use_iterator use_end() { return use_iterator(0); } + /// use_empty - Return true if there are no instructions using the specified + /// register. + bool use_empty(unsigned RegNo) const { return use_begin(RegNo) == use_end(); } + /// replaceRegWith - Replace all instances of FromReg with ToReg in the /// machine function. This is like llvm-level X->replaceAllUsesWith(Y),