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Add codegen support for NEON vld3 intrinsics with 128-bit vectors.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83471 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2009-10-07 17:24:55 +00:00
parent 228c08b8dd
commit ff8952e8a9
4 changed files with 146 additions and 13 deletions
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55
lib/Target/ARM/ARMISelDAGToDAG.cpp
View File

@ -444,7 +444,7 @@ bool ARMDAGToDAGISel::SelectAddrMode6(SDValue Op, SDValue N,
SDValue &Addr, SDValue &Update,
SDValue &Opc) {
Addr = N;
// The optional writeback is handled in ARMLoadStoreOpt.
// Default to no writeback.
Update = CurDAG->getRegister(0, MVT::i32);
Opc = CurDAG->getTargetConstant(ARM_AM::getAM6Opc(false), MVT::i32);
return true;
@ -1388,16 +1388,57 @@ SDNode *ARMDAGToDAGISel::Select(SDValue Op) {
SDValue MemAddr, MemUpdate, MemOpc;
if (!SelectAddrMode6(Op, N->getOperand(2), MemAddr, MemUpdate, MemOpc))
return NULL;
if (VT.is64BitVector()) {
switch (VT.getSimpleVT().SimpleTy) {
default: llvm_unreachable("unhandled vld3 type");
case MVT::v8i8: Opc = ARM::VLD3d8; break;
case MVT::v4i16: Opc = ARM::VLD3d16; break;
case MVT::v2f32:
case MVT::v2i32: Opc = ARM::VLD3d32; break;
}
SDValue Chain = N->getOperand(0);
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc, Chain };
return CurDAG->getMachineNode(Opc, dl, VT, VT, VT, MVT::Other, Ops, 4);
}
// Quad registers are loaded with two separate instructions, where one
// loads the even registers and the other loads the odd registers.
EVT RegVT = VT;
unsigned Opc2 = 0;
switch (VT.getSimpleVT().SimpleTy) {
default: llvm_unreachable("unhandled vld3 type");
case MVT::v8i8: Opc = ARM::VLD3d8; break;
case MVT::v4i16: Opc = ARM::VLD3d16; break;
case MVT::v2f32:
case MVT::v2i32: Opc = ARM::VLD3d32; break;
case MVT::v16i8:
Opc = ARM::VLD3q8a; Opc2 = ARM::VLD3q8b; RegVT = MVT::v8i8; break;
case MVT::v8i16:
Opc = ARM::VLD3q16a; Opc2 = ARM::VLD3q16b; RegVT = MVT::v4i16; break;
case MVT::v4f32:
Opc = ARM::VLD3q32a; Opc2 = ARM::VLD3q32b; RegVT = MVT::v2f32; break;
case MVT::v4i32:
Opc = ARM::VLD3q32a; Opc2 = ARM::VLD3q32b; RegVT = MVT::v2i32; break;
}
SDValue Chain = N->getOperand(0);
const SDValue Ops[] = { MemAddr, MemUpdate, MemOpc, Chain };
return CurDAG->getMachineNode(Opc, dl, VT, VT, VT, MVT::Other, Ops, 4);
// Enable writeback to the address register.
MemOpc = CurDAG->getTargetConstant(ARM_AM::getAM6Opc(true), MVT::i32);
std::vector<EVT> ResTys(3, RegVT);
ResTys.push_back(MemAddr.getValueType());
ResTys.push_back(MVT::Other);
const SDValue OpsA[] = { MemAddr, MemUpdate, MemOpc, Chain };
SDNode *VLdA = CurDAG->getMachineNode(Opc, dl, ResTys, OpsA, 4);
Chain = SDValue(VLdA, 4);
const SDValue OpsB[] = { SDValue(VLdA, 3), MemUpdate, MemOpc, Chain };
SDNode *VLdB = CurDAG->getMachineNode(Opc2, dl, ResTys, OpsB, 4);
Chain = SDValue(VLdB, 4);
SDNode *Q0 = PairDRegs(VT, SDValue(VLdA, 0), SDValue(VLdB, 0));
SDNode *Q1 = PairDRegs(VT, SDValue(VLdA, 1), SDValue(VLdB, 1));
SDNode *Q2 = PairDRegs(VT, SDValue(VLdA, 2), SDValue(VLdB, 2));
ReplaceUses(SDValue(N, 0), SDValue(Q0, 0));
ReplaceUses(SDValue(N, 1), SDValue(Q1, 0));
ReplaceUses(SDValue(N, 2), SDValue(Q2, 0));
ReplaceUses(SDValue(N, 3), Chain);
return NULL;
}
case Intrinsic::arm_neon_vld4: {

15
lib/Target/ARM/ARMInstrNEON.td
View File

@ -201,11 +201,26 @@ class VLD3D<string OpcodeStr>
: NLdSt<(outs DPR:$dst1, DPR:$dst2, DPR:$dst3), (ins addrmode6:$addr),
IIC_VLD3,
!strconcat(OpcodeStr, "\t\\{$dst1,$dst2,$dst3\\}, $addr"), "", []>;
class VLD3WB<string OpcodeStr>
: NLdSt<(outs DPR:$dst1, DPR:$dst2, DPR:$dst3, GPR:$wb),
(ins addrmode6:$addr), IIC_VLD3,
!strconcat(OpcodeStr, "\t\\{$dst1,$dst2,$dst3\\}, $addr"),
"$addr.addr = $wb", []>;
def VLD3d8 : VLD3D<"vld3.8">;
def VLD3d16 : VLD3D<"vld3.16">;
def VLD3d32 : VLD3D<"vld3.32">;
// vld3 to double-spaced even registers.
def VLD3q8a : VLD3WB<"vld3.8">;
def VLD3q16a : VLD3WB<"vld3.16">;
def VLD3q32a : VLD3WB<"vld3.32">;
// vld3 to double-spaced odd registers.
def VLD3q8b : VLD3WB<"vld3.8">;
def VLD3q16b : VLD3WB<"vld3.16">;
def VLD3q32b : VLD3WB<"vld3.32">;
// VLD4 : Vector Load (multiple 4-element structures)
class VLD4D<string OpcodeStr>
: NLdSt<(outs DPR:$dst1, DPR:$dst2, DPR:$dst3, DPR:$dst4),

35
lib/Target/ARM/NEONPreAllocPass.cpp
View File

@ -36,8 +36,12 @@ namespace {
char NEONPreAllocPass::ID = 0;
}
static bool isNEONMultiRegOp(int Opcode, unsigned &FirstOpnd,
unsigned &NumRegs) {
static bool isNEONMultiRegOp(int Opcode, unsigned &FirstOpnd, unsigned &NumRegs,
unsigned &Offset, unsigned &Stride) {
// Default to unit stride with no offset.
Stride = 1;
Offset = 0;
switch (Opcode) {
default:
break;
@ -69,6 +73,24 @@ static bool isNEONMultiRegOp(int Opcode, unsigned &FirstOpnd,
NumRegs = 3;
return true;
case ARM::VLD3q8a:
case ARM::VLD3q16a:
case ARM::VLD3q32a:
FirstOpnd = 0;
NumRegs = 3;
Offset = 0;
Stride = 2;
return true;
case ARM::VLD3q8b:
case ARM::VLD3q16b:
case ARM::VLD3q32b:
FirstOpnd = 0;
NumRegs = 3;
Offset = 1;
Stride = 2;
return true;
case ARM::VLD4d8:
case ARM::VLD4d16:
case ARM::VLD4d32:
@ -149,8 +171,8 @@ bool NEONPreAllocPass::PreAllocNEONRegisters(MachineBasicBlock &MBB) {
MachineBasicBlock::iterator MBBI = MBB.begin(), E = MBB.end();
for (; MBBI != E; ++MBBI) {
MachineInstr *MI = &*MBBI;
unsigned FirstOpnd, NumRegs;
if (!isNEONMultiRegOp(MI->getOpcode(), FirstOpnd, NumRegs))
unsigned FirstOpnd, NumRegs, Offset, Stride;
if (!isNEONMultiRegOp(MI->getOpcode(), FirstOpnd, NumRegs, Offset, Stride))
continue;
MachineBasicBlock::iterator NextI = next(MBBI);
@ -164,9 +186,10 @@ bool NEONPreAllocPass::PreAllocNEONRegisters(MachineBasicBlock &MBB) {
// For now, just assign a fixed set of adjacent registers.
// This leaves plenty of room for future improvements.
static const unsigned NEONDRegs[] = {
ARM::D0, ARM::D1, ARM::D2, ARM::D3
ARM::D0, ARM::D1, ARM::D2, ARM::D3,
ARM::D4, ARM::D5, ARM::D6, ARM::D7
};
MO.setReg(NEONDRegs[R]);
MO.setReg(NEONDRegs[Offset + R * Stride]);
if (MO.isUse()) {
// Insert a copy from VirtReg.

54
test/CodeGen/ARM/vld3.ll
View File

@ -5,6 +5,11 @@
%struct.__neon_int32x2x3_t = type { <2 x i32>, <2 x i32>, <2 x i32> }
%struct.__neon_float32x2x3_t = type { <2 x float>, <2 x float>, <2 x float> }
%struct.__neon_int8x16x3_t = type { <16 x i8>, <16 x i8>, <16 x i8> }
%struct.__neon_int16x8x3_t = type { <8 x i16>, <8 x i16>, <8 x i16> }
%struct.__neon_int32x4x3_t = type { <4 x i32>, <4 x i32>, <4 x i32> }
%struct.__neon_float32x4x3_t = type { <4 x float>, <4 x float>, <4 x float> }
define <8 x i8> @vld3i8(i8* %A) nounwind {
;CHECK: vld3i8:
;CHECK: vld3.8
@ -45,7 +50,56 @@ define <2 x float> @vld3f(float* %A) nounwind {
ret <2 x float> %tmp4
}
define <16 x i8> @vld3Qi8(i8* %A) nounwind {
;CHECK: vld3Qi8:
;CHECK: vld3.8
;CHECK: vld3.8
%tmp1 = call %struct.__neon_int8x16x3_t @llvm.arm.neon.vld3.v16i8(i8* %A)
%tmp2 = extractvalue %struct.__neon_int8x16x3_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_int8x16x3_t %tmp1, 2
%tmp4 = add <16 x i8> %tmp2, %tmp3
ret <16 x i8> %tmp4
}
define <8 x i16> @vld3Qi16(i16* %A) nounwind {
;CHECK: vld3Qi16:
;CHECK: vld3.16
;CHECK: vld3.16
%tmp1 = call %struct.__neon_int16x8x3_t @llvm.arm.neon.vld3.v8i16(i16* %A)
%tmp2 = extractvalue %struct.__neon_int16x8x3_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_int16x8x3_t %tmp1, 2
%tmp4 = add <8 x i16> %tmp2, %tmp3
ret <8 x i16> %tmp4
}
define <4 x i32> @vld3Qi32(i32* %A) nounwind {
;CHECK: vld3Qi32:
;CHECK: vld3.32
;CHECK: vld3.32
%tmp1 = call %struct.__neon_int32x4x3_t @llvm.arm.neon.vld3.v4i32(i32* %A)
%tmp2 = extractvalue %struct.__neon_int32x4x3_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_int32x4x3_t %tmp1, 2
%tmp4 = add <4 x i32> %tmp2, %tmp3
ret <4 x i32> %tmp4
}
define <4 x float> @vld3Qf(float* %A) nounwind {
;CHECK: vld3Qf:
;CHECK: vld3.32
;CHECK: vld3.32
%tmp1 = call %struct.__neon_float32x4x3_t @llvm.arm.neon.vld3.v4f32(float* %A)
%tmp2 = extractvalue %struct.__neon_float32x4x3_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_float32x4x3_t %tmp1, 2
%tmp4 = add <4 x float> %tmp2, %tmp3
ret <4 x float> %tmp4
}
declare %struct.__neon_int8x8x3_t @llvm.arm.neon.vld3.v8i8(i8*) nounwind readonly
declare %struct.__neon_int16x4x3_t @llvm.arm.neon.vld3.v4i16(i8*) nounwind readonly
declare %struct.__neon_int32x2x3_t @llvm.arm.neon.vld3.v2i32(i8*) nounwind readonly
declare %struct.__neon_float32x2x3_t @llvm.arm.neon.vld3.v2f32(i8*) nounwind readonly
declare %struct.__neon_int8x16x3_t @llvm.arm.neon.vld3.v16i8(i8*) nounwind readonly
declare %struct.__neon_int16x8x3_t @llvm.arm.neon.vld3.v8i16(i8*) nounwind readonly
declare %struct.__neon_int32x4x3_t @llvm.arm.neon.vld3.v4i32(i8*) nounwind readonly
declare %struct.__neon_float32x4x3_t @llvm.arm.neon.vld3.v4f32(i8*) nounwind readonly