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path: root/lib/Target/R600/R600ISelLowering.cpp
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Diffstat (limited to 'lib/Target/R600/R600ISelLowering.cpp')
-rw-r--r--lib/Target/R600/R600ISelLowering.cpp178
1 files changed, 83 insertions, 95 deletions
diff --git a/lib/Target/R600/R600ISelLowering.cpp b/lib/Target/R600/R600ISelLowering.cpp
index 7f3560a..a214e53 100644
--- a/lib/Target/R600/R600ISelLowering.cpp
+++ b/lib/Target/R600/R600ISelLowering.cpp
@@ -19,6 +19,7 @@
#include "R600Defines.h"
#include "R600InstrInfo.h"
#include "R600MachineFunctionInfo.h"
+#include "llvm/Analysis/ValueTracking.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
@@ -82,6 +83,8 @@ R600TargetLowering::R600TargetLowering(TargetMachine &TM) :
setOperationAction(ISD::SETCC, MVT::i32, Expand);
setOperationAction(ISD::SETCC, MVT::f32, Expand);
setOperationAction(ISD::FP_TO_UINT, MVT::i1, Custom);
+ setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom);
+ setOperationAction(ISD::FP_TO_UINT, MVT::i64, Custom);
setOperationAction(ISD::SELECT, MVT::i32, Expand);
setOperationAction(ISD::SELECT, MVT::f32, Expand);
@@ -189,7 +192,7 @@ MachineBasicBlock * R600TargetLowering::EmitInstrWithCustomInserter(
MachineRegisterInfo &MRI = MF->getRegInfo();
MachineBasicBlock::iterator I = *MI;
const R600InstrInfo *TII =
- static_cast<const R600InstrInfo*>(MF->getTarget().getInstrInfo());
+ static_cast<const R600InstrInfo *>(MF->getSubtarget().getInstrInfo());
switch (MI->getOpcode()) {
default:
@@ -199,7 +202,10 @@ MachineBasicBlock * R600TargetLowering::EmitInstrWithCustomInserter(
int DstIdx = TII->getOperandIdx(MI->getOpcode(), AMDGPU::OpName::dst);
assert(DstIdx != -1);
MachineInstrBuilder NewMI;
- if (!MRI.use_empty(MI->getOperand(DstIdx).getReg()))
+ // FIXME: getLDSNoRetOp method only handles LDS_1A1D LDS ops. Add
+ // LDS_1A2D support and remove this special case.
+ if (!MRI.use_empty(MI->getOperand(DstIdx).getReg()) ||
+ MI->getOpcode() == AMDGPU::LDS_CMPST_RET)
return BB;
NewMI = BuildMI(*BB, I, BB->findDebugLoc(I),
@@ -642,8 +648,8 @@ SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const
MachineSDNode *interp;
if (ijb < 0) {
const MachineFunction &MF = DAG.getMachineFunction();
- const R600InstrInfo *TII =
- static_cast<const R600InstrInfo*>(MF.getTarget().getInstrInfo());
+ const R600InstrInfo *TII = static_cast<const R600InstrInfo *>(
+ MF.getSubtarget().getInstrInfo());
interp = DAG.getMachineNode(AMDGPU::INTERP_VEC_LOAD, DL,
MVT::v4f32, DAG.getTargetConstant(slot / 4 , MVT::i32));
return DAG.getTargetExtractSubreg(
@@ -803,6 +809,9 @@ SDValue R600TargetLowering::LowerOperation(SDValue Op, SelectionDAG &DAG) const
case Intrinsic::r600_read_local_size_z:
return LowerImplicitParameter(DAG, VT, DL, 8);
+ case Intrinsic::AMDGPU_read_workdim:
+ return LowerImplicitParameter(DAG, VT, DL, MFI->ABIArgOffset / 4);
+
case Intrinsic::r600_read_tgid_x:
return CreateLiveInRegister(DAG, &AMDGPU::R600_TReg32RegClass,
AMDGPU::T1_X, VT);
@@ -839,8 +848,20 @@ void R600TargetLowering::ReplaceNodeResults(SDNode *N,
default:
AMDGPUTargetLowering::ReplaceNodeResults(N, Results, DAG);
return;
- case ISD::FP_TO_UINT: Results.push_back(LowerFPTOUINT(N->getOperand(0), DAG));
+ case ISD::FP_TO_UINT:
+ if (N->getValueType(0) == MVT::i1) {
+ Results.push_back(LowerFPTOUINT(N->getOperand(0), DAG));
+ return;
+ }
+ // Fall-through. Since we don't care about out of bounds values
+ // we can use FP_TO_SINT for uints too. The DAGLegalizer code for uint
+ // considers some extra cases which are not necessary here.
+ case ISD::FP_TO_SINT: {
+ SDValue Result;
+ if (expandFP_TO_SINT(N, Result, DAG))
+ Results.push_back(Result);
return;
+ }
case ISD::UDIV: {
SDValue Op = SDValue(N, 0);
SDLoc DL(Op);
@@ -886,74 +907,7 @@ void R600TargetLowering::ReplaceNodeResults(SDNode *N,
}
case ISD::UDIVREM: {
SDValue Op = SDValue(N, 0);
- SDLoc DL(Op);
- EVT VT = Op.getValueType();
- EVT HalfVT = VT.getHalfSizedIntegerVT(*DAG.getContext());
-
- SDValue one = DAG.getConstant(1, HalfVT);
- SDValue zero = DAG.getConstant(0, HalfVT);
-
- //HiLo split
- SDValue LHS = N->getOperand(0);
- SDValue LHS_Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, LHS, zero);
- SDValue LHS_Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, LHS, one);
-
- SDValue RHS = N->getOperand(1);
- SDValue RHS_Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, RHS, zero);
- SDValue RHS_Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, RHS, one);
-
- // Get Speculative values
- SDValue DIV_Part = DAG.getNode(ISD::UDIV, DL, HalfVT, LHS_Hi, RHS_Lo);
- SDValue REM_Part = DAG.getNode(ISD::UREM, DL, HalfVT, LHS_Hi, RHS_Lo);
-
- SDValue REM_Hi = zero;
- SDValue REM_Lo = DAG.getSelectCC(DL, RHS_Hi, zero, REM_Part, LHS_Hi, ISD::SETEQ);
-
- SDValue DIV_Hi = DAG.getSelectCC(DL, RHS_Hi, zero, DIV_Part, zero, ISD::SETEQ);
- SDValue DIV_Lo = zero;
-
- const unsigned halfBitWidth = HalfVT.getSizeInBits();
-
- for (unsigned i = 0; i < halfBitWidth; ++i) {
- SDValue POS = DAG.getConstant(halfBitWidth - i - 1, HalfVT);
- // Get Value of high bit
- SDValue HBit;
- if (halfBitWidth == 32 && Subtarget->hasBFE()) {
- HBit = DAG.getNode(AMDGPUISD::BFE_U32, DL, HalfVT, LHS_Lo, POS, one);
- } else {
- HBit = DAG.getNode(ISD::SRL, DL, HalfVT, LHS_Lo, POS);
- HBit = DAG.getNode(ISD::AND, DL, HalfVT, HBit, one);
- }
-
- SDValue Carry = DAG.getNode(ISD::SRL, DL, HalfVT, REM_Lo,
- DAG.getConstant(halfBitWidth - 1, HalfVT));
- REM_Hi = DAG.getNode(ISD::SHL, DL, HalfVT, REM_Hi, one);
- REM_Hi = DAG.getNode(ISD::OR, DL, HalfVT, REM_Hi, Carry);
-
- REM_Lo = DAG.getNode(ISD::SHL, DL, HalfVT, REM_Lo, one);
- REM_Lo = DAG.getNode(ISD::OR, DL, HalfVT, REM_Lo, HBit);
-
-
- SDValue REM = DAG.getNode(ISD::BUILD_PAIR, DL, VT, REM_Lo, REM_Hi);
-
- SDValue BIT = DAG.getConstant(1 << (halfBitWidth - i - 1), HalfVT);
- SDValue realBIT = DAG.getSelectCC(DL, REM, RHS, BIT, zero, ISD::SETGE);
-
- DIV_Lo = DAG.getNode(ISD::OR, DL, HalfVT, DIV_Lo, realBIT);
-
- // Update REM
-
- SDValue REM_sub = DAG.getNode(ISD::SUB, DL, VT, REM, RHS);
-
- REM = DAG.getSelectCC(DL, REM, RHS, REM_sub, REM, ISD::SETGE);
- REM_Lo = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, REM, zero);
- REM_Hi = DAG.getNode(ISD::EXTRACT_ELEMENT, DL, HalfVT, REM, one);
- }
-
- SDValue REM = DAG.getNode(ISD::BUILD_PAIR, DL, VT, REM_Lo, REM_Hi);
- SDValue DIV = DAG.getNode(ISD::BUILD_PAIR, DL, VT, DIV_Lo, DIV_Hi);
- Results.push_back(DIV);
- Results.push_back(REM);
+ LowerUDIVREM64(Op, DAG, Results);
break;
}
}
@@ -1415,8 +1369,8 @@ SDValue R600TargetLowering::LowerSTORE(SDValue Op, SelectionDAG &DAG) const {
// Lowering for indirect addressing
const MachineFunction &MF = DAG.getMachineFunction();
- const AMDGPUFrameLowering *TFL = static_cast<const AMDGPUFrameLowering*>(
- getTargetMachine().getFrameLowering());
+ const AMDGPUFrameLowering *TFL = static_cast<const AMDGPUFrameLowering *>(
+ getTargetMachine().getSubtargetImpl()->getFrameLowering());
unsigned StackWidth = TFL->getStackWidth(MF);
Ptr = stackPtrToRegIndex(Ptr, StackWidth, DAG);
@@ -1512,10 +1466,23 @@ SDValue R600TargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const
return DAG.getMergeValues(Ops, DL);
}
+ // Lower loads constant address space global variable loads
+ if (LoadNode->getAddressSpace() == AMDGPUAS::CONSTANT_ADDRESS &&
+ isa<GlobalVariable>(
+ GetUnderlyingObject(LoadNode->getMemOperand()->getValue()))) {
+
+ SDValue Ptr = DAG.getZExtOrTrunc(LoadNode->getBasePtr(), DL,
+ getPointerTy(AMDGPUAS::PRIVATE_ADDRESS));
+ Ptr = DAG.getNode(ISD::SRL, DL, MVT::i32, Ptr,
+ DAG.getConstant(2, MVT::i32));
+ return DAG.getNode(AMDGPUISD::REGISTER_LOAD, DL, Op->getVTList(),
+ LoadNode->getChain(), Ptr,
+ DAG.getTargetConstant(0, MVT::i32), Op.getOperand(2));
+ }
if (LoadNode->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS && VT.isVector()) {
SDValue MergedValues[2] = {
- SplitVectorLoad(Op, DAG),
+ ScalarizeVectorLoad(Op, DAG),
Chain
};
return DAG.getMergeValues(MergedValues, DL);
@@ -1585,6 +1552,7 @@ SDValue R600TargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const
LoadNode->getPointerInfo(), MemVT,
LoadNode->isVolatile(),
LoadNode->isNonTemporal(),
+ LoadNode->isInvariant(),
LoadNode->getAlignment());
SDValue Shl = DAG.getNode(ISD::SHL, DL, VT, NewLoad, ShiftAmount);
SDValue Sra = DAG.getNode(ISD::SRA, DL, VT, Shl, ShiftAmount);
@@ -1599,8 +1567,8 @@ SDValue R600TargetLowering::LowerLOAD(SDValue Op, SelectionDAG &DAG) const
// Lowering for indirect addressing
const MachineFunction &MF = DAG.getMachineFunction();
- const AMDGPUFrameLowering *TFL = static_cast<const AMDGPUFrameLowering*>(
- getTargetMachine().getFrameLowering());
+ const AMDGPUFrameLowering *TFL = static_cast<const AMDGPUFrameLowering *>(
+ getTargetMachine().getSubtargetImpl()->getFrameLowering());
unsigned StackWidth = TFL->getStackWidth(MF);
Ptr = stackPtrToRegIndex(Ptr, StackWidth, DAG);
@@ -1663,10 +1631,10 @@ SDValue R600TargetLowering::LowerFormalArguments(
SDLoc DL, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const {
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
- getTargetMachine(), ArgLocs, *DAG.getContext());
+ CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(), ArgLocs,
+ *DAG.getContext());
MachineFunction &MF = DAG.getMachineFunction();
- unsigned ShaderType = MF.getInfo<R600MachineFunctionInfo>()->ShaderType;
+ R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>();
SmallVector<ISD::InputArg, 8> LocalIns;
@@ -1676,10 +1644,15 @@ SDValue R600TargetLowering::LowerFormalArguments(
for (unsigned i = 0, e = Ins.size(); i < e; ++i) {
CCValAssign &VA = ArgLocs[i];
- EVT VT = Ins[i].VT;
- EVT MemVT = LocalIns[i].VT;
+ const ISD::InputArg &In = Ins[i];
+ EVT VT = In.VT;
+ EVT MemVT = VA.getLocVT();
+ if (!VT.isVector() && MemVT.isVector()) {
+ // Get load source type if scalarized.
+ MemVT = MemVT.getVectorElementType();
+ }
- if (ShaderType != ShaderType::COMPUTE) {
+ if (MFI->getShaderType() != ShaderType::COMPUTE) {
unsigned Reg = MF.addLiveIn(VA.getLocReg(), &AMDGPU::R600_Reg128RegClass);
SDValue Register = DAG.getCopyFromReg(Chain, DL, Reg, VT);
InVals.push_back(Register);
@@ -1687,7 +1660,7 @@ SDValue R600TargetLowering::LowerFormalArguments(
}
PointerType *PtrTy = PointerType::get(VT.getTypeForEVT(*DAG.getContext()),
- AMDGPUAS::CONSTANT_BUFFER_0);
+ AMDGPUAS::CONSTANT_BUFFER_0);
// i64 isn't a legal type, so the register type used ends up as i32, which
// isn't expected here. It attempts to create this sextload, but it ends up
@@ -1696,18 +1669,33 @@ SDValue R600TargetLowering::LowerFormalArguments(
// The first 36 bytes of the input buffer contains information about
// thread group and global sizes.
+ ISD::LoadExtType Ext = ISD::NON_EXTLOAD;
+ if (MemVT.getScalarSizeInBits() != VT.getScalarSizeInBits()) {
+ // FIXME: This should really check the extload type, but the handling of
+ // extload vector parameters seems to be broken.
+
+ // Ext = In.Flags.isSExt() ? ISD::SEXTLOAD : ISD::ZEXTLOAD;
+ Ext = ISD::SEXTLOAD;
+ }
+
+ // Compute the offset from the value.
+ // XXX - I think PartOffset should give you this, but it seems to give the
+ // size of the register which isn't useful.
+
+ unsigned ValBase = ArgLocs[In.OrigArgIndex].getLocMemOffset();
+ unsigned PartOffset = VA.getLocMemOffset();
+ unsigned Offset = 36 + VA.getLocMemOffset();
- // FIXME: This should really check the extload type, but the handling of
- // extload vecto parameters seems to be broken.
- //ISD::LoadExtType Ext = Ins[i].Flags.isSExt() ? ISD::SEXTLOAD : ISD::ZEXTLOAD;
- ISD::LoadExtType Ext = ISD::SEXTLOAD;
- SDValue Arg = DAG.getExtLoad(Ext, DL, VT, Chain,
- DAG.getConstant(36 + VA.getLocMemOffset(), MVT::i32),
- MachinePointerInfo(UndefValue::get(PtrTy)),
- MemVT, false, false, 4);
+ MachinePointerInfo PtrInfo(UndefValue::get(PtrTy), PartOffset - ValBase);
+ SDValue Arg = DAG.getLoad(ISD::UNINDEXED, Ext, VT, DL, Chain,
+ DAG.getConstant(Offset, MVT::i32),
+ DAG.getUNDEF(MVT::i32),
+ PtrInfo,
+ MemVT, false, true, true, 4);
// 4 is the preferred alignment for the CONSTANT memory space.
InVals.push_back(Arg);
+ MFI->ABIArgOffset = Offset + MemVT.getStoreSize();
}
return Chain;
}
@@ -2053,7 +2041,7 @@ static bool
FoldOperand(SDNode *ParentNode, unsigned SrcIdx, SDValue &Src, SDValue &Neg,
SDValue &Abs, SDValue &Sel, SDValue &Imm, SelectionDAG &DAG) {
const R600InstrInfo *TII =
- static_cast<const R600InstrInfo *>(DAG.getTarget().getInstrInfo());
+ static_cast<const R600InstrInfo *>(DAG.getSubtarget().getInstrInfo());
if (!Src.isMachineOpcode())
return false;
switch (Src.getMachineOpcode()) {
@@ -2178,7 +2166,7 @@ FoldOperand(SDNode *ParentNode, unsigned SrcIdx, SDValue &Src, SDValue &Neg,
SDNode *R600TargetLowering::PostISelFolding(MachineSDNode *Node,
SelectionDAG &DAG) const {
const R600InstrInfo *TII =
- static_cast<const R600InstrInfo *>(DAG.getTarget().getInstrInfo());
+ static_cast<const R600InstrInfo *>(DAG.getSubtarget().getInstrInfo());
if (!Node->isMachineOpcode())
return Node;
unsigned Opcode = Node->getMachineOpcode();
generated by cgit v1.1 at 2025-07-03 16:28:31 +0000