From 27fb3dcbc738451856f641c70c94ed44a6b44ffd Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Tue, 26 Aug 2008 18:03:31 +0000 Subject: Make TargetInstrInfo::copyRegToReg return a bool indicating whether the copy requested was inserted or not. This allows bitcast in fast isel to properly handle the case where an appropriate reg-to-reg copy is not available. llvm-svn: 55375 --- llvm/lib/Target/Mips/MipsInstrInfo.cpp | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'llvm/lib/Target/Mips/MipsInstrInfo.cpp') diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.cpp b/llvm/lib/Target/Mips/MipsInstrInfo.cpp index 2d016c67d46..4a919a0a28e 100644 --- a/llvm/lib/Target/Mips/MipsInstrInfo.cpp +++ b/llvm/lib/Target/Mips/MipsInstrInfo.cpp @@ -118,7 +118,7 @@ insertNoop(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI) const BuildMI(MBB, MI, get(Mips::NOP)); } -void MipsInstrInfo:: +bool MipsInstrInfo:: copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned DestReg, unsigned SrcReg, const TargetRegisterClass *DestRC, @@ -141,10 +141,10 @@ copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, BuildMI(MBB, I, get(Mips::MTC1A), DestReg).addReg(SrcReg); else if ((SrcRC == Mips::CCRRegisterClass) && (SrcReg == Mips::FCR31)) - return; // This register is used implicitly, no copy needed. + return true; // This register is used implicitly, no copy needed. else if ((DestRC == Mips::CCRRegisterClass) && (DestReg == Mips::FCR31)) - return; // This register is used implicitly, no copy needed. + return true; // This register is used implicitly, no copy needed. else if ((DestRC == Mips::HILORegisterClass) && (SrcRC == Mips::CPURegsRegisterClass)) { unsigned Opc = (DestReg == Mips::HI) ? Mips::MTHI : Mips::MTLO; @@ -154,9 +154,10 @@ copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned Opc = (SrcReg == Mips::HI) ? Mips::MFHI : Mips::MFLO; BuildMI(MBB, I, get(Opc), DestReg); } else - assert (0 && "DestRC != SrcRC, Can't copy this register"); + // DestRC != SrcRC, Can't copy this register + return false; - return; + return true; } if (DestRC == Mips::CPURegsRegisterClass) @@ -169,7 +170,10 @@ copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, else if (DestRC == Mips::AFGR64RegisterClass) BuildMI(MBB, I, get(Mips::FMOV_D32), DestReg).addReg(SrcReg); else - assert (0 && "Can't copy this register"); + // Can't copy this register + return false; + + return true; } void MipsInstrInfo:: -- cgit v1.2.3