diff options
| -rw-r--r-- | lib/Target/PowerPC/PPCRegisterInfo.cpp | 16 | ||||
| -rw-r--r-- | lib/Target/PowerPC/PPCRegisterInfo.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCRegisterInfo.cpp b/lib/Target/PowerPC/PPCRegisterInfo.cpp index 6d564b9..9093381 100644 --- a/lib/Target/PowerPC/PPCRegisterInfo.cpp +++ b/lib/Target/PowerPC/PPCRegisterInfo.cpp @@ -134,6 +134,22 @@ void PPC32RegisterInfo::copyRegToReg(MachineBasicBlock &MBB, } } +unsigned PPC32RegisterInfo::isLoadFromStackSlot(MachineInstr *MI, + int &FrameIndex) const { + switch (MI->getOpcode()) { + default: break; + case PPC::LWZ: + case PPC::LFD: + if (MI->getOperand(1).isImmediate() && !MI->getOperand(1).getImmedValue() && + MI->getOperand(2).isFrameIndex()) { + FrameIndex = MI->getOperand(2).getFrameIndex(); + return MI->getOperand(0).getReg(); + } + break; + } + return 0; +} + /// foldMemoryOperand - PowerPC (like most RISC's) can only fold spills into /// copy instructions, turning them into load/store instructions. MachineInstr *PPC32RegisterInfo::foldMemoryOperand(MachineInstr *MI, diff --git a/lib/Target/PowerPC/PPCRegisterInfo.h b/lib/Target/PowerPC/PPCRegisterInfo.h index d274545..603d1b3 100644 --- a/lib/Target/PowerPC/PPCRegisterInfo.h +++ b/lib/Target/PowerPC/PPCRegisterInfo.h @@ -40,6 +40,8 @@ public: unsigned DestReg, unsigned SrcReg, const TargetRegisterClass *RC) const; + unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const; + /// foldMemoryOperand - PowerPC (like most RISC's) can only fold spills into /// copy instructions, turning them into load/store instructions. virtual MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum, |