diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 58004f0201e..e9df3f53375 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -4481,55 +4481,6 @@ SDOperand X86TargetLowering::LowerMEMSET(SDOperand Op, SelectionDAG &DAG) { return Chain; } -SDOperand X86TargetLowering::LowerMEMCPY(SDOperand Op, SelectionDAG &DAG) { - SDOperand ChainOp = Op.getOperand(0); - SDOperand DestOp = Op.getOperand(1); - SDOperand SourceOp = Op.getOperand(2); - SDOperand CountOp = Op.getOperand(3); - SDOperand AlignOp = Op.getOperand(4); - SDOperand AlwaysInlineOp = Op.getOperand(5); - - bool AlwaysInline = (bool)cast<ConstantSDNode>(AlwaysInlineOp)->getValue(); - unsigned Align = (unsigned)cast<ConstantSDNode>(AlignOp)->getValue(); - if (Align == 0) Align = 1; - - // If size is unknown, call memcpy. - ConstantSDNode *I = dyn_cast<ConstantSDNode>(CountOp); - if (!I) { - assert(!AlwaysInline && "Cannot inline copy of unknown size"); - return LowerMEMCPYCall(ChainOp, DestOp, SourceOp, CountOp, DAG); - } - - // If not DWORD aligned or if size is more than threshold, then call memcpy. - // The libc version is likely to be faster for the following cases. It can - // use the address value and run time information about the CPU. - // With glibc 2.6.1 on a core 2, coping an array of 100M longs was 30% faster - unsigned Size = I->getValue(); - if (AlwaysInline || - (Size <= Subtarget->getMaxInlineSizeThreshold() && - (Align & 3) == 0)) - return LowerMEMCPYInline(ChainOp, DestOp, SourceOp, Size, Align, DAG); - return LowerMEMCPYCall(ChainOp, DestOp, SourceOp, CountOp, DAG); -} - -SDOperand X86TargetLowering::LowerMEMCPYCall(SDOperand Chain, - SDOperand Dest, - SDOperand Source, - SDOperand Count, - SelectionDAG &DAG) { - MVT::ValueType IntPtr = getPointerTy(); - TargetLowering::ArgListTy Args; - TargetLowering::ArgListEntry Entry; - Entry.Ty = getTargetData()->getIntPtrType(); - Entry.Node = Dest; Args.push_back(Entry); - Entry.Node = Source; Args.push_back(Entry); - Entry.Node = Count; Args.push_back(Entry); - std::pair<SDOperand,SDOperand> CallResult = - LowerCallTo(Chain, Type::VoidTy, false, false, CallingConv::C, false, - DAG.getExternalSymbol("memcpy", IntPtr), Args, DAG); - return CallResult.second; -} - SDOperand X86TargetLowering::LowerMEMCPYInline(SDOperand Chain, SDOperand Dest, SDOperand Source, |

