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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Compiler/CISACodeGen/CISACodeGen.h"
#include "Compiler/CodeGenContextWrapper.hpp"
#include "Compiler/CodeGenPublic.h"
namespace llvm {
class DataLayout;
class Type;
class FunctionPass;
} // namespace llvm
namespace IGC {
llvm::FunctionPass *createVectorPreProcessPass();
llvm::FunctionPass *createVectorProcessPass();
class EmitPass;
// Used to map vector to its corresponding messages
class VectorMessage {
public:
enum MESSAGE_KIND {
MESSAGE_A32_UNTYPED_SURFACE_RW,
MESSAGE_A32_BYTE_SCATTERED_RW,
MESSAGE_A64_UNTYPED_SURFACE_RW,
MESSAGE_A64_SCATTERED_RW,
MESSAGE_A32_QWORD_SCATTERED_RW,
MESSAGE_A32_LSC_RW,
MESSAGE_A64_LSC_RW
};
// VECMESSAGEINFO_MAX_LEN:
// VectorPreProcess splits larger vectors. After that, the
// max vector would be <8 x i32>, which would be 8 insts at
// most (when it is unaligned) using byte scattered messages.
// Therefore, using 16 would be enough.
enum {
VECMESSAGEINFO_MAX_LEN = 16,
// SKL+
// Exception
// BDW : use A64_BYTE_SCATTERED_MAX_BYTES_8B
// TGL : no 8DW scattered message.
// use A64_SCATTERED_MAX_BYTES_4DW
A32_UNTYPED_MAX_BYTES = 16,
A32_BYTE_SCATTERED_MAX_BYTES = 4,
A64_UNTYPED_MAX_BYTES = 16,
A64_SCATTERED_MAX_BYTES_8DW_SIMD8 = 32,
A64_SCATTERED_MAX_BYTES_4DW = 16,
A64_BYTE_SCATTERED_MAX_BYTES_8B = 8,
A64_BYTE_SCATTERED_MAX_BYTES = 4,
A32_A64_BYTE_LSC_LOAD_STORE_MAX_BYTES_SIMD32 = 16,
A32_A64_BYTE_LSC_LOAD_STORE_MAX_BYTES_SIMD16 = 32,
A32_A64_BYTE_LSC_LOAD_STORE_MAX_BYTES = 64,
A32_A64_DATA_SIZE_LSC_LOAD_STORE_MAX_BYTES = 64
};
// Calculated by getInfo().
struct {
MESSAGE_KIND kind;
uint16_t startByte;
VISA_Type blkType; // type of a block (B, D, Q, etc)
uint16_t blkInBytes; // the block size in bytes
uint16_t numBlks; // the number of blocks
} insts[VECMESSAGEINFO_MAX_LEN] = {};
uint16_t numInsts = 0;
VectorMessage(EmitPass *emitter);
VectorMessage(CShader *shader) : Shader(shader) {}
void getInfo(llvm::Type *Ty, uint64_t Align, bool useA32, bool forceByteScatteredRW = false);
void getLSCInfo(llvm::Type *Ty, uint64_t Align, CodeGenContext *ctx, bool useA32, bool transpose);
private:
const CShader *Shader;
VectorMessage(const VectorMessage &); // not implemented
void operator=(const VectorMessage &); // not implemented
};
} // namespace IGC
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