diff options
| -rw-r--r-- | lib/Target/PowerPC/PPCRegisterInfo.cpp | 14 | ||||
| -rw-r--r-- | lib/Target/PowerPC/PPCRegisterInfo.h | 2 |
2 files changed, 16 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCRegisterInfo.cpp b/lib/Target/PowerPC/PPCRegisterInfo.cpp index 76402ef978..ab8bf1f93a 100644 --- a/lib/Target/PowerPC/PPCRegisterInfo.cpp +++ b/lib/Target/PowerPC/PPCRegisterInfo.cpp @@ -199,6 +199,20 @@ PPCRegisterInfo::getRegPressureLimit(const TargetRegisterClass *RC, } } +bool +PPCRegisterInfo::avoidWriteAfterWrite(const TargetRegisterClass *RC) const { + switch (RC->getID()) { + case PPC::G8RCRegClassID: + case PPC::GPRCRegClassID: + case PPC::F8RCRegClassID: + case PPC::F4RCRegClassID: + case PPC::VRRCRegClassID: + return true; + default: + return false; + } +} + //===----------------------------------------------------------------------===// // Stack Frame Processing methods //===----------------------------------------------------------------------===// diff --git a/lib/Target/PowerPC/PPCRegisterInfo.h b/lib/Target/PowerPC/PPCRegisterInfo.h index 78e17c6890..152c36d699 100644 --- a/lib/Target/PowerPC/PPCRegisterInfo.h +++ b/lib/Target/PowerPC/PPCRegisterInfo.h @@ -47,6 +47,8 @@ public: BitVector getReservedRegs(const MachineFunction &MF) const; + virtual bool avoidWriteAfterWrite(const TargetRegisterClass *RC) const; + /// requiresRegisterScavenging - We require a register scavenger. /// FIXME (64-bit): Should be inlined. bool requiresRegisterScavenging(const MachineFunction &MF) const; |