diff options
Diffstat (limited to 'lib/Target/Mips/MipsISelLowering.cpp')
| -rw-r--r-- | lib/Target/Mips/MipsISelLowering.cpp | 53 |
1 files changed, 3 insertions, 50 deletions
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp index e10061a9ea..c5207c6737 100644 --- a/lib/Target/Mips/MipsISelLowering.cpp +++ b/lib/Target/Mips/MipsISelLowering.cpp @@ -157,7 +157,6 @@ MipsTargetLowering(MipsTargetMachine &TM) setOperationAction(ISD::SETCC, MVT::f32, Custom); setOperationAction(ISD::SETCC, MVT::f64, Custom); setOperationAction(ISD::BRCOND, MVT::Other, Custom); - setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom); setOperationAction(ISD::VASTART, MVT::Other, Custom); setOperationAction(ISD::FCOPYSIGN, MVT::f32, Custom); setOperationAction(ISD::FCOPYSIGN, MVT::f64, Custom); @@ -178,7 +177,6 @@ MipsTargetLowering(MipsTargetMachine &TM) setOperationAction(ISD::JumpTable, MVT::i64, Custom); setOperationAction(ISD::ConstantPool, MVT::i64, Custom); setOperationAction(ISD::SELECT, MVT::i64, Custom); - setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Custom); setOperationAction(ISD::LOAD, MVT::i64, Custom); setOperationAction(ISD::STORE, MVT::i64, Custom); } @@ -217,6 +215,8 @@ MipsTargetLowering(MipsTargetMachine &TM) setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand); setOperationAction(ISD::ROTL, MVT::i32, Expand); setOperationAction(ISD::ROTL, MVT::i64, Expand); + setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Expand); + setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Expand); if (!Subtarget->hasMips32r2()) setOperationAction(ISD::ROTR, MVT::i32, Expand); @@ -792,7 +792,6 @@ LowerOperation(SDValue Op, SelectionDAG &DAG) const { case ISD::BRCOND: return LowerBRCOND(Op, DAG); case ISD::ConstantPool: return LowerConstantPool(Op, DAG); - case ISD::DYNAMIC_STACKALLOC: return LowerDYNAMIC_STACKALLOC(Op, DAG); case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG); case ISD::BlockAddress: return LowerBlockAddress(Op, DAG); case ISD::GlobalTLSAddress: return LowerGlobalTLSAddress(Op, DAG); @@ -1502,42 +1501,6 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI, // Misc Lower Operation implementation //===----------------------------------------------------------------------===// SDValue MipsTargetLowering:: -LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const -{ - MachineFunction &MF = DAG.getMachineFunction(); - MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>(); - unsigned SP = IsN64 ? Mips::SP_64 : Mips::SP; - - assert(getTargetMachine().getFrameLowering()->getStackAlignment() >= - cast<ConstantSDNode>(Op.getOperand(2).getNode())->getZExtValue() && - "Cannot lower if the alignment of the allocated space is larger than \ - that of the stack."); - - SDValue Chain = Op.getOperand(0); - SDValue Size = Op.getOperand(1); - DebugLoc dl = Op.getDebugLoc(); - - // Get a reference from Mips stack pointer - SDValue StackPointer = DAG.getCopyFromReg(Chain, dl, SP, getPointerTy()); - - // Subtract the dynamic size from the actual stack size to - // obtain the new stack size. - SDValue Sub = DAG.getNode(ISD::SUB, dl, getPointerTy(), StackPointer, Size); - - // The Sub result contains the new stack start address, so it - // must be placed in the stack pointer register. - Chain = DAG.getCopyToReg(StackPointer.getValue(1), dl, SP, Sub, SDValue()); - - // This node always has two return values: a new stack pointer - // value and a chain - SDVTList VTLs = DAG.getVTList(getPointerTy(), MVT::Other); - SDValue Ptr = DAG.getFrameIndex(MipsFI->getDynAllocFI(), getPointerTy()); - SDValue Ops[] = { Chain, Ptr, Chain.getValue(1) }; - - return DAG.getNode(MipsISD::DynAlloc, dl, VTLs, Ops, 3); -} - -SDValue MipsTargetLowering:: LowerBRCOND(SDValue Op, SelectionDAG &DAG) const { // The first operand is the chain, the second is the condition, the third is @@ -2691,19 +2654,9 @@ MipsTargetLowering::LowerCall(TargetLowering::CallLoweringInfo &CLI, IsN64 ? Mips::SP_64 : Mips::SP, getPointerTy()); - // Get the frame index of the stack frame object that points to the location - // of dynamically allocated area on the stack. - int DynAllocFI = MipsFI->getDynAllocFI(); - - if (MipsFI->getMaxCallFrameSize() < NextStackOffset) { + if (MipsFI->getMaxCallFrameSize() < NextStackOffset) MipsFI->setMaxCallFrameSize(NextStackOffset); - // Set the offsets relative to $sp of the $gp restore slot and dynamically - // allocated stack space. These offsets must be aligned to a boundary - // determined by the stack alignment of the ABI. - MFI->setObjectOffset(DynAllocFI, NextStackOffset); - } - // With EABI is it possible to have 16 args on registers. SmallVector<std::pair<unsigned, SDValue>, 16> RegsToPass; SmallVector<SDValue, 8> MemOpChains; |