1285163Sdim//===-- WebAssemblySelectionDAGInfo.cpp - WebAssembly SelectionDAG Info ---===//
2285163Sdim//
3353358Sdim// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4353358Sdim// See https://llvm.org/LICENSE.txt for license information.
5353358Sdim// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6285163Sdim//
7285163Sdim//===----------------------------------------------------------------------===//
8285163Sdim///
9285163Sdim/// \file
10341825Sdim/// This file implements the WebAssemblySelectionDAGInfo class.
11285163Sdim///
12285163Sdim//===----------------------------------------------------------------------===//
13285163Sdim
14285163Sdim#include "WebAssemblyTargetMachine.h"
15285163Sdimusing namespace llvm;
16285163Sdim
17285163Sdim#define DEBUG_TYPE "wasm-selectiondag-info"
18285163Sdim
19353358SdimWebAssemblySelectionDAGInfo::~WebAssemblySelectionDAGInfo() = default; // anchor
20353358Sdim
21353358SdimSDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemcpy(
22353358Sdim    SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst, SDValue Src,
23353358Sdim    SDValue Size, unsigned Align, bool IsVolatile, bool AlwaysInline,
24353358Sdim    MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const {
25353358Sdim  if (!DAG.getMachineFunction()
26353358Sdim           .getSubtarget<WebAssemblySubtarget>()
27353358Sdim           .hasBulkMemory())
28353358Sdim    return SDValue();
29353358Sdim
30353358Sdim  SDValue MemIdx = DAG.getConstant(0, DL, MVT::i32);
31353358Sdim  return DAG.getNode(WebAssemblyISD::MEMORY_COPY, DL, MVT::Other,
32353358Sdim                     {Chain, MemIdx, MemIdx, Dst, Src,
33353358Sdim                      DAG.getZExtOrTrunc(Size, DL, MVT::i32)});
34353358Sdim}
35353358Sdim
36353358SdimSDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemmove(
37353358Sdim    SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Op1, SDValue Op2,
38353358Sdim    SDValue Op3, unsigned Align, bool IsVolatile,
39353358Sdim    MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const {
40353358Sdim  return EmitTargetCodeForMemcpy(DAG, DL, Chain, Op1, Op2, Op3, Align,
41353358Sdim                                 IsVolatile, false, DstPtrInfo,
42353358Sdim                                 SrcPtrInfo);
43353358Sdim}
44353358Sdim
45353358SdimSDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemset(
46353358Sdim    SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst, SDValue Val,
47353358Sdim    SDValue Size, unsigned Align, bool IsVolatile,
48353358Sdim    MachinePointerInfo DstPtrInfo) const {
49353358Sdim  if (!DAG.getMachineFunction()
50353358Sdim           .getSubtarget<WebAssemblySubtarget>()
51353358Sdim           .hasBulkMemory())
52353358Sdim    return SDValue();
53353358Sdim
54353358Sdim  SDValue MemIdx = DAG.getConstant(0, DL, MVT::i32);
55353358Sdim  // Only low byte matters for val argument, so anyext the i8
56353358Sdim  return DAG.getNode(WebAssemblyISD::MEMORY_FILL, DL, MVT::Other, Chain, MemIdx,
57353358Sdim                     Dst, DAG.getAnyExtOrTrunc(Val, DL, MVT::i32),
58353358Sdim                     DAG.getZExtOrTrunc(Size, DL, MVT::i32));
59353358Sdim}
60