diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2017-04-16 16:01:22 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2017-04-16 16:01:22 +0000 |
| commit | 71d5a2540a98c81f5bcaeb48805e0e2881f530ef (patch) | |
| tree | 5343938942df402b49ec7300a1c25a2d4ccd5821 /lib/CodeGen/CriticalAntiDepBreaker.cpp | |
| parent | 31bbf64f3a4974a2d6c8b3b27ad2f519caf74057 (diff) | |
Diffstat (limited to 'lib/CodeGen/CriticalAntiDepBreaker.cpp')
| -rw-r--r-- | lib/CodeGen/CriticalAntiDepBreaker.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/CodeGen/CriticalAntiDepBreaker.cpp b/lib/CodeGen/CriticalAntiDepBreaker.cpp index 5d60c3055456..e1eeddf0816c 100644 --- a/lib/CodeGen/CriticalAntiDepBreaker.cpp +++ b/lib/CodeGen/CriticalAntiDepBreaker.cpp @@ -71,8 +71,11 @@ void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) { // callee-saved register that is not saved in the prolog. const MachineFrameInfo &MFI = MF.getFrameInfo(); BitVector Pristine = MFI.getPristineRegs(MF); - for (const MCPhysReg *I = TRI->getCalleeSavedRegs(&MF); *I; ++I) { - if (!IsReturnBlock && !Pristine.test(*I)) continue; + for (const MCPhysReg *I = MF.getRegInfo().getCalleeSavedRegs(); *I; + ++I) { + unsigned Reg = *I; + if (!IsReturnBlock && !(Pristine.test(Reg) || BB->isLiveIn(Reg))) + continue; for (MCRegAliasIterator AI(*I, TRI, true); AI.isValid(); ++AI) { unsigned Reg = *AI; Classes[Reg] = reinterpret_cast<TargetRegisterClass *>(-1); |