| //===-- WebAssemblySelectionDAGInfo.cpp - WebAssembly SelectionDAG Info ---===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// This file implements the WebAssemblySelectionDAGInfo class. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "WebAssemblyTargetMachine.h" |
| using namespace llvm; |
| |
| #define DEBUG_TYPE "wasm-selectiondag-info" |
| |
| WebAssemblySelectionDAGInfo::~WebAssemblySelectionDAGInfo() = default; // anchor |
| |
| SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemcpy( |
| SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst, SDValue Src, |
| SDValue Size, Align Alignment, bool IsVolatile, bool AlwaysInline, |
| MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const { |
| auto &ST = DAG.getMachineFunction().getSubtarget<WebAssemblySubtarget>(); |
| if (!ST.hasBulkMemory()) |
| return SDValue(); |
| |
| SDValue MemIdx = DAG.getConstant(0, DL, MVT::i32); |
| auto LenMVT = ST.hasAddr64() ? MVT::i64 : MVT::i32; |
| return DAG.getNode(WebAssemblyISD::MEMORY_COPY, DL, MVT::Other, |
| {Chain, MemIdx, MemIdx, Dst, Src, |
| DAG.getZExtOrTrunc(Size, DL, LenMVT)}); |
| } |
| |
| SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemmove( |
| SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Op1, SDValue Op2, |
| SDValue Op3, Align Alignment, bool IsVolatile, |
| MachinePointerInfo DstPtrInfo, MachinePointerInfo SrcPtrInfo) const { |
| return EmitTargetCodeForMemcpy(DAG, DL, Chain, Op1, Op2, Op3, |
| Alignment, IsVolatile, false, |
| DstPtrInfo, SrcPtrInfo); |
| } |
| |
| SDValue WebAssemblySelectionDAGInfo::EmitTargetCodeForMemset( |
| SelectionDAG &DAG, const SDLoc &DL, SDValue Chain, SDValue Dst, SDValue Val, |
| SDValue Size, Align Alignment, bool IsVolatile, |
| MachinePointerInfo DstPtrInfo) const { |
| auto &ST = DAG.getMachineFunction().getSubtarget<WebAssemblySubtarget>(); |
| if (!ST.hasBulkMemory()) |
| return SDValue(); |
| |
| SDValue MemIdx = DAG.getConstant(0, DL, MVT::i32); |
| auto LenMVT = ST.hasAddr64() ? MVT::i64 : MVT::i32; |
| // Only low byte matters for val argument, so anyext the i8 |
| return DAG.getNode(WebAssemblyISD::MEMORY_FILL, DL, MVT::Other, Chain, MemIdx, |
| Dst, DAG.getAnyExtOrTrunc(Val, DL, MVT::i32), |
| DAG.getZExtOrTrunc(Size, DL, LenMVT)); |
| } |