b8d1994778
When sampling from images with coordinates that only have 16 bit accuracy, convert the image intrinsic call to use a16 or g16. This does only happen if the target hardware supports it. An alternative would be to always apply this combination, independent of the target hardware and extend 16 bit arguments to 32 bit arguments during legalization. To me, this sounds like an unnecessary roundtrip that could prevent some further InstCombine optimizations. Differential Revision: https://reviews.llvm.org/D85887
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
//===-- AMDGPUInstrInfo.h - AMDGPU Instruction Information ------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// Contains the definition of a TargetInstrInfo class that is common
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/// to all AMD GPUs.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUINSTRINFO_H
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#define LLVM_LIB_TARGET_AMDGPU_AMDGPUINSTRINFO_H
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#include "AMDGPU.h"
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#include "Utils/AMDGPUBaseInfo.h"
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#include "llvm/CodeGen/TargetInstrInfo.h"
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namespace llvm {
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class GCNSubtarget;
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class MachineFunction;
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class MachineInstr;
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class MachineInstrBuilder;
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class AMDGPUInstrInfo {
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public:
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explicit AMDGPUInstrInfo(const GCNSubtarget &st);
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static bool isUniformMMO(const MachineMemOperand *MMO);
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};
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namespace AMDGPU {
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struct RsrcIntrinsic {
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unsigned Intr;
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uint8_t RsrcArg;
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bool IsImage;
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};
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const RsrcIntrinsic *lookupRsrcIntrinsic(unsigned Intr);
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struct D16ImageDimIntrinsic {
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unsigned Intr;
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unsigned D16HelperIntr;
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};
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const D16ImageDimIntrinsic *lookupD16ImageDimIntrinsic(unsigned Intr);
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struct ImageDimIntrinsicInfo {
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unsigned Intr;
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unsigned BaseOpcode;
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MIMGDim Dim;
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unsigned GradientStart;
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unsigned CoordStart;
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unsigned VAddrEnd;
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unsigned GradientTyArg;
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unsigned CoordTyArg;
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};
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const ImageDimIntrinsicInfo *getImageDimIntrinsicInfo(unsigned Intr);
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const ImageDimIntrinsicInfo *getImageDimInstrinsicByBaseOpcode(unsigned BaseOpcode,
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unsigned Dim);
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} // end AMDGPU namespace
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} // End llvm namespace
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#endif
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