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| author | Evan Cheng <evan.cheng@apple.com> | 2008-06-18 07:47:55 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-06-18 07:47:55 +0000 |
| commit | 6e062a45858586d1a522c0aeaf8c77446db101db (patch) | |
| tree | 65caf4652489b33b517e5e520621bfe5cb5eee2f | |
| parent | e3c4f5387879d7287bc6f5ffaf7f07542b360df9 (diff) | |
| download | external_llvm-6e062a45858586d1a522c0aeaf8c77446db101db.zip external_llvm-6e062a45858586d1a522c0aeaf8c77446db101db.tar.gz external_llvm-6e062a45858586d1a522c0aeaf8c77446db101db.tar.bz2 | |
Add MachineRegisterInfo::use_empty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52451 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/llvm/CodeGen/MachineRegisterInfo.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/MachineRegisterInfo.h b/include/llvm/CodeGen/MachineRegisterInfo.h index f5fda9b..b93794c 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), |