diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCInstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCInstrInfo.cpp | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp index ecc5e28c0d8..5952d73d205 100644 --- a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp +++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp @@ -2357,13 +2357,6 @@ MachineInstr *PPCInstrInfo::getForwardingDefMI( MachineBasicBlock::reverse_iterator E = MI.getParent()->rend(), It = MI; It++; unsigned Reg = MI.getOperand(i).getReg(); - // MachineInstr::readsRegister only returns true if the machine - // instruction reads the exact register or its super-register. It - // does not consider uses of sub-registers which seems like strange - // behaviour. Nonetheless, if we end up with a 64-bit register here, - // get the corresponding 32-bit register to check. - if (PPC::G8RCRegClass.contains(Reg)) - Reg = Reg - PPC::X0 + PPC::R0; // Is this register defined by some form of add-immediate (including // load-immediate) within this basic block? @@ -3183,14 +3176,7 @@ bool PPCInstrInfo::isRegElgibleForForwarding(const MachineOperand &RegMO, if (MRI.isSSA()) return false; - // MachineInstr::readsRegister only returns true if the machine - // instruction reads the exact register or its super-register. It - // does not consider uses of sub-registers which seems like strange - // behaviour. Nonetheless, if we end up with a 64-bit register here, - // get the corresponding 32-bit register to check. unsigned Reg = RegMO.getReg(); - if (PPC::G8RCRegClass.contains(Reg)) - Reg = Reg - PPC::X0 + PPC::R0; // Walking the inst in reverse(MI-->DefMI) to get the last DEF of the Reg. MachineBasicBlock::const_reverse_iterator It = MI; |
