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Add codegen support for NEON vld4 intrinsics with 128-bit vectors.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83479 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson 2009-10-07 18:09:32 +00:00
parent 99e6d4e839
commit 7708c22baa
4 changed files with 137 additions and 7 deletions
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43
lib/Target/ARM/ARMISelDAGToDAG.cpp
View File

@ -1445,6 +1445,7 @@ 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 vld4 type");
case MVT::v8i8: Opc = ARM::VLD4d8; break;
@ -1458,6 +1459,48 @@ SDNode *ARMDAGToDAGISel::Select(SDValue Op) {
ResTys.push_back(MVT::Other);
return CurDAG->getMachineNode(Opc, dl, ResTys, 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 vld4 type");
case MVT::v16i8:
Opc = ARM::VLD4q8a; Opc2 = ARM::VLD4q8b; RegVT = MVT::v8i8; break;
case MVT::v8i16:
Opc = ARM::VLD4q16a; Opc2 = ARM::VLD4q16b; RegVT = MVT::v4i16; break;
case MVT::v4f32:
Opc = ARM::VLD4q32a; Opc2 = ARM::VLD4q32b; RegVT = MVT::v2f32; break;
case MVT::v4i32:
Opc = ARM::VLD4q32a; Opc2 = ARM::VLD4q32b; RegVT = MVT::v2i32; break;
}
SDValue Chain = N->getOperand(0);
// Enable writeback to the address register.
MemOpc = CurDAG->getTargetConstant(ARM_AM::getAM6Opc(true), MVT::i32);
std::vector<EVT> ResTys(4, 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, 5);
const SDValue OpsB[] = { SDValue(VLdA, 4), MemUpdate, MemOpc, Chain };
SDNode *VLdB = CurDAG->getMachineNode(Opc2, dl, ResTys, OpsB, 4);
Chain = SDValue(VLdB, 5);
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));
SDNode *Q3 = PairDRegs(VT, SDValue(VLdA, 3), SDValue(VLdB, 3));
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), SDValue(Q3, 0));
ReplaceUses(SDValue(N, 4), Chain);
return NULL;
}
case Intrinsic::arm_neon_vld2lane: {
SDValue MemAddr, MemUpdate, MemOpc;

15
lib/Target/ARM/ARMInstrNEON.td
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@ -227,11 +227,26 @@ class VLD4D<string OpcodeStr>
(ins addrmode6:$addr), IIC_VLD4,
!strconcat(OpcodeStr, "\t\\{$dst1,$dst2,$dst3,$dst4\\}, $addr"),
"", []>;
class VLD4WB<string OpcodeStr>
: NLdSt<(outs DPR:$dst1, DPR:$dst2, DPR:$dst3, DPR:$dst4, GPR:$wb),
(ins addrmode6:$addr), IIC_VLD4,
!strconcat(OpcodeStr, "\t\\{$dst1,$dst2,$dst3,$dst4\\}, $addr"),
"$addr.addr = $wb", []>;
def VLD4d8 : VLD4D<"vld4.8">;
def VLD4d16 : VLD4D<"vld4.16">;
def VLD4d32 : VLD4D<"vld4.32">;
// vld4 to double-spaced even registers.
def VLD4q8a : VLD4WB<"vld4.8">;
def VLD4q16a : VLD4WB<"vld4.16">;
def VLD4q32a : VLD4WB<"vld4.32">;
// vld4 to double-spaced odd registers.
def VLD4q8b : VLD4WB<"vld4.8">;
def VLD4q16b : VLD4WB<"vld4.16">;
def VLD4q32b : VLD4WB<"vld4.32">;
// VLD2LN : Vector Load (single 2-element structure to one lane)
class VLD2LND<string OpcodeStr>
: NLdSt<(outs DPR:$dst1, DPR:$dst2),

18
lib/Target/ARM/NEONPreAllocPass.cpp
View File

@ -101,6 +101,24 @@ static bool isNEONMultiRegOp(int Opcode, unsigned &FirstOpnd, unsigned &NumRegs,
NumRegs = 4;
return true;
case ARM::VLD4q8a:
case ARM::VLD4q16a:
case ARM::VLD4q32a:
FirstOpnd = 0;
NumRegs = 4;
Offset = 0;
Stride = 2;
return true;
case ARM::VLD4q8b:
case ARM::VLD4q16b:
case ARM::VLD4q32b:
FirstOpnd = 0;
NumRegs = 4;
Offset = 1;
Stride = 2;
return true;
case ARM::VST2d8:
case ARM::VST2d16:
case ARM::VST2d32:

54
test/CodeGen/ARM/vld4.ll
View File

@ -5,6 +5,11 @@
%struct.__neon_int32x2x4_t = type { <2 x i32>, <2 x i32>, <2 x i32>, <2 x i32> }
%struct.__neon_float32x2x4_t = type { <2 x float>, <2 x float>, <2 x float>, <2 x float> }
%struct.__neon_int8x16x4_t = type { <16 x i8>, <16 x i8>, <16 x i8>, <16 x i8> }
%struct.__neon_int16x8x4_t = type { <8 x i16>, <8 x i16>, <8 x i16>, <8 x i16> }
%struct.__neon_int32x4x4_t = type { <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32> }
%struct.__neon_float32x4x4_t = type { <4 x float>, <4 x float>, <4 x float>, <4 x float> }
define <8 x i8> @vld4i8(i8* %A) nounwind {
;CHECK: vld4i8:
;CHECK: vld4.8
@ -45,7 +50,56 @@ define <2 x float> @vld4f(float* %A) nounwind {
ret <2 x float> %tmp4
}
define <16 x i8> @vld4Qi8(i8* %A) nounwind {
;CHECK: vld4Qi8:
;CHECK: vld4.8
;CHECK: vld4.8
%tmp1 = call %struct.__neon_int8x16x4_t @llvm.arm.neon.vld4.v16i8(i8* %A)
%tmp2 = extractvalue %struct.__neon_int8x16x4_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_int8x16x4_t %tmp1, 2
%tmp4 = add <16 x i8> %tmp2, %tmp3
ret <16 x i8> %tmp4
}
define <8 x i16> @vld4Qi16(i16* %A) nounwind {
;CHECK: vld4Qi16:
;CHECK: vld4.16
;CHECK: vld4.16
%tmp1 = call %struct.__neon_int16x8x4_t @llvm.arm.neon.vld4.v8i16(i16* %A)
%tmp2 = extractvalue %struct.__neon_int16x8x4_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_int16x8x4_t %tmp1, 2
%tmp4 = add <8 x i16> %tmp2, %tmp3
ret <8 x i16> %tmp4
}
define <4 x i32> @vld4Qi32(i32* %A) nounwind {
;CHECK: vld4Qi32:
;CHECK: vld4.32
;CHECK: vld4.32
%tmp1 = call %struct.__neon_int32x4x4_t @llvm.arm.neon.vld4.v4i32(i32* %A)
%tmp2 = extractvalue %struct.__neon_int32x4x4_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_int32x4x4_t %tmp1, 2
%tmp4 = add <4 x i32> %tmp2, %tmp3
ret <4 x i32> %tmp4
}
define <4 x float> @vld4Qf(float* %A) nounwind {
;CHECK: vld4Qf:
;CHECK: vld4.32
;CHECK: vld4.32
%tmp1 = call %struct.__neon_float32x4x4_t @llvm.arm.neon.vld4.v4f32(float* %A)
%tmp2 = extractvalue %struct.__neon_float32x4x4_t %tmp1, 0
%tmp3 = extractvalue %struct.__neon_float32x4x4_t %tmp1, 2
%tmp4 = add <4 x float> %tmp2, %tmp3
ret <4 x float> %tmp4
}
declare %struct.__neon_int8x8x4_t @llvm.arm.neon.vld4.v8i8(i8*) nounwind readonly
declare %struct.__neon_int16x4x4_t @llvm.arm.neon.vld4.v4i16(i8*) nounwind readonly
declare %struct.__neon_int32x2x4_t @llvm.arm.neon.vld4.v2i32(i8*) nounwind readonly
declare %struct.__neon_float32x2x4_t @llvm.arm.neon.vld4.v2f32(i8*) nounwind readonly
declare %struct.__neon_int8x16x4_t @llvm.arm.neon.vld4.v16i8(i8*) nounwind readonly
declare %struct.__neon_int16x8x4_t @llvm.arm.neon.vld4.v8i16(i8*) nounwind readonly
declare %struct.__neon_int32x4x4_t @llvm.arm.neon.vld4.v4i32(i8*) nounwind readonly
declare %struct.__neon_float32x4x4_t @llvm.arm.neon.vld4.v4f32(i8*) nounwind readonly