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a52756b2c9
Identifies kernels which performs device side kernel enqueues and emit metadata for the associated hidden kernel arguments. Such kernels are marked with calls-enqueue-kernel function attribute by AMDGPUOpenCLEnqueueKernelLowering pass and later on hidden kernel arguments metadata HiddenDefaultQueue and HiddenCompletionAction are emitted for them. Differential Revision: https://reviews.llvm.org/D39255 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316907 91177308-0d34-0410-b5e6-96231b3b80d8
406 lines
13 KiB
C++
406 lines
13 KiB
C++
//===--- AMDGPUHSAMetadataStreamer.cpp --------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// \brief AMDGPU HSA Metadata Streamer.
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///
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//
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//===----------------------------------------------------------------------===//
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#include "AMDGPUHSAMetadataStreamer.h"
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#include "AMDGPU.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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static cl::opt<bool> DumpHSAMetadata(
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"amdgpu-dump-hsa-metadata",
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cl::desc("Dump AMDGPU HSA Metadata"));
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static cl::opt<bool> VerifyHSAMetadata(
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"amdgpu-verify-hsa-metadata",
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cl::desc("Verify AMDGPU HSA Metadata"));
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namespace AMDGPU {
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namespace HSAMD {
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void MetadataStreamer::dump(StringRef HSAMetadataString) const {
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errs() << "AMDGPU HSA Metadata:\n" << HSAMetadataString << '\n';
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}
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void MetadataStreamer::verify(StringRef HSAMetadataString) const {
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errs() << "AMDGPU HSA Metadata Parser Test: ";
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HSAMD::Metadata FromHSAMetadataString;
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if (fromString(HSAMetadataString, FromHSAMetadataString)) {
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errs() << "FAIL\n";
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return;
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}
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std::string ToHSAMetadataString;
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if (toString(FromHSAMetadataString, ToHSAMetadataString)) {
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errs() << "FAIL\n";
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return;
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}
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errs() << (HSAMetadataString == ToHSAMetadataString ? "PASS" : "FAIL")
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<< '\n';
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if (HSAMetadataString != ToHSAMetadataString) {
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errs() << "Original input: " << HSAMetadataString << '\n'
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<< "Produced output: " << ToHSAMetadataString << '\n';
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}
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}
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AccessQualifier MetadataStreamer::getAccessQualifier(StringRef AccQual) const {
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if (AccQual.empty())
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return AccessQualifier::Unknown;
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return StringSwitch<AccessQualifier>(AccQual)
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.Case("read_only", AccessQualifier::ReadOnly)
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.Case("write_only", AccessQualifier::WriteOnly)
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.Case("read_write", AccessQualifier::ReadWrite)
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.Default(AccessQualifier::Default);
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}
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AddressSpaceQualifier MetadataStreamer::getAddressSpaceQualifer(
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unsigned AddressSpace) const {
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if (AddressSpace == AMDGPUASI.PRIVATE_ADDRESS)
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return AddressSpaceQualifier::Private;
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if (AddressSpace == AMDGPUASI.GLOBAL_ADDRESS)
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return AddressSpaceQualifier::Global;
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if (AddressSpace == AMDGPUASI.CONSTANT_ADDRESS)
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return AddressSpaceQualifier::Constant;
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if (AddressSpace == AMDGPUASI.LOCAL_ADDRESS)
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return AddressSpaceQualifier::Local;
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if (AddressSpace == AMDGPUASI.FLAT_ADDRESS)
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return AddressSpaceQualifier::Generic;
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if (AddressSpace == AMDGPUASI.REGION_ADDRESS)
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return AddressSpaceQualifier::Region;
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llvm_unreachable("Unknown address space qualifier");
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}
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ValueKind MetadataStreamer::getValueKind(Type *Ty, StringRef TypeQual,
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StringRef BaseTypeName) const {
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if (TypeQual.find("pipe") != StringRef::npos)
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return ValueKind::Pipe;
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return StringSwitch<ValueKind>(BaseTypeName)
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.Case("image1d_t", ValueKind::Image)
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.Case("image1d_array_t", ValueKind::Image)
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.Case("image1d_buffer_t", ValueKind::Image)
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.Case("image2d_t", ValueKind::Image)
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.Case("image2d_array_t", ValueKind::Image)
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.Case("image2d_array_depth_t", ValueKind::Image)
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.Case("image2d_array_msaa_t", ValueKind::Image)
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.Case("image2d_array_msaa_depth_t", ValueKind::Image)
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.Case("image2d_depth_t", ValueKind::Image)
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.Case("image2d_msaa_t", ValueKind::Image)
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.Case("image2d_msaa_depth_t", ValueKind::Image)
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.Case("image3d_t", ValueKind::Image)
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.Case("sampler_t", ValueKind::Sampler)
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.Case("queue_t", ValueKind::Queue)
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.Default(isa<PointerType>(Ty) ?
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(Ty->getPointerAddressSpace() ==
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AMDGPUASI.LOCAL_ADDRESS ?
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ValueKind::DynamicSharedPointer :
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ValueKind::GlobalBuffer) :
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ValueKind::ByValue);
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}
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ValueType MetadataStreamer::getValueType(Type *Ty, StringRef TypeName) const {
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switch (Ty->getTypeID()) {
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case Type::IntegerTyID: {
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auto Signed = !TypeName.startswith("u");
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switch (Ty->getIntegerBitWidth()) {
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case 8:
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return Signed ? ValueType::I8 : ValueType::U8;
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case 16:
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return Signed ? ValueType::I16 : ValueType::U16;
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case 32:
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return Signed ? ValueType::I32 : ValueType::U32;
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case 64:
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return Signed ? ValueType::I64 : ValueType::U64;
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default:
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return ValueType::Struct;
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}
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}
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case Type::HalfTyID:
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return ValueType::F16;
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case Type::FloatTyID:
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return ValueType::F32;
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case Type::DoubleTyID:
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return ValueType::F64;
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case Type::PointerTyID:
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return getValueType(Ty->getPointerElementType(), TypeName);
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case Type::VectorTyID:
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return getValueType(Ty->getVectorElementType(), TypeName);
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default:
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return ValueType::Struct;
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}
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}
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std::string MetadataStreamer::getTypeName(Type *Ty, bool Signed) const {
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switch (Ty->getTypeID()) {
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case Type::IntegerTyID: {
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if (!Signed)
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return (Twine('u') + getTypeName(Ty, true)).str();
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auto BitWidth = Ty->getIntegerBitWidth();
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switch (BitWidth) {
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case 8:
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return "char";
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case 16:
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return "short";
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case 32:
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return "int";
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case 64:
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return "long";
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default:
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return (Twine('i') + Twine(BitWidth)).str();
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}
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}
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case Type::HalfTyID:
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return "half";
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case Type::FloatTyID:
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return "float";
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case Type::DoubleTyID:
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return "double";
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case Type::VectorTyID: {
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auto VecTy = cast<VectorType>(Ty);
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auto ElTy = VecTy->getElementType();
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auto NumElements = VecTy->getVectorNumElements();
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return (Twine(getTypeName(ElTy, Signed)) + Twine(NumElements)).str();
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}
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default:
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return "unknown";
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}
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}
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std::vector<uint32_t> MetadataStreamer::getWorkGroupDimensions(
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MDNode *Node) const {
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std::vector<uint32_t> Dims;
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if (Node->getNumOperands() != 3)
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return Dims;
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for (auto &Op : Node->operands())
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Dims.push_back(mdconst::extract<ConstantInt>(Op)->getZExtValue());
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return Dims;
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}
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void MetadataStreamer::emitVersion() {
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auto &Version = HSAMetadata.mVersion;
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Version.push_back(VersionMajor);
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Version.push_back(VersionMinor);
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}
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void MetadataStreamer::emitPrintf(const Module &Mod) {
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auto &Printf = HSAMetadata.mPrintf;
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auto Node = Mod.getNamedMetadata("llvm.printf.fmts");
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if (!Node)
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return;
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for (auto Op : Node->operands())
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if (Op->getNumOperands())
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Printf.push_back(cast<MDString>(Op->getOperand(0))->getString());
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}
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void MetadataStreamer::emitKernelLanguage(const Function &Func) {
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auto &Kernel = HSAMetadata.mKernels.back();
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// TODO: What about other languages?
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auto Node = Func.getParent()->getNamedMetadata("opencl.ocl.version");
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if (!Node || !Node->getNumOperands())
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return;
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auto Op0 = Node->getOperand(0);
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if (Op0->getNumOperands() <= 1)
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return;
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Kernel.mLanguage = "OpenCL C";
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Kernel.mLanguageVersion.push_back(
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mdconst::extract<ConstantInt>(Op0->getOperand(0))->getZExtValue());
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Kernel.mLanguageVersion.push_back(
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mdconst::extract<ConstantInt>(Op0->getOperand(1))->getZExtValue());
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}
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void MetadataStreamer::emitKernelAttrs(const Function &Func) {
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auto &Attrs = HSAMetadata.mKernels.back().mAttrs;
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if (auto Node = Func.getMetadata("reqd_work_group_size"))
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Attrs.mReqdWorkGroupSize = getWorkGroupDimensions(Node);
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if (auto Node = Func.getMetadata("work_group_size_hint"))
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Attrs.mWorkGroupSizeHint = getWorkGroupDimensions(Node);
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if (auto Node = Func.getMetadata("vec_type_hint")) {
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Attrs.mVecTypeHint = getTypeName(
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cast<ValueAsMetadata>(Node->getOperand(0))->getType(),
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mdconst::extract<ConstantInt>(Node->getOperand(1))->getZExtValue());
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}
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if (Func.hasFnAttribute("runtime-handle")) {
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Attrs.mRuntimeHandle =
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Func.getFnAttribute("runtime-handle").getValueAsString().str();
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}
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}
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void MetadataStreamer::emitKernelArgs(const Function &Func) {
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for (auto &Arg : Func.args())
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emitKernelArg(Arg);
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// TODO: What about other languages?
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if (!Func.getParent()->getNamedMetadata("opencl.ocl.version"))
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return;
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auto &DL = Func.getParent()->getDataLayout();
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auto Int64Ty = Type::getInt64Ty(Func.getContext());
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emitKernelArg(DL, Int64Ty, ValueKind::HiddenGlobalOffsetX);
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emitKernelArg(DL, Int64Ty, ValueKind::HiddenGlobalOffsetY);
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emitKernelArg(DL, Int64Ty, ValueKind::HiddenGlobalOffsetZ);
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auto Int8PtrTy = Type::getInt8PtrTy(Func.getContext(),
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AMDGPUASI.GLOBAL_ADDRESS);
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auto CallsPrintf = Func.getParent()->getNamedMetadata("llvm.printf.fmts");
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if (CallsPrintf)
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emitKernelArg(DL, Int8PtrTy, ValueKind::HiddenPrintfBuffer);
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if (Func.hasFnAttribute("calls-enqueue-kernel")) {
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if (!CallsPrintf) {
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// Emit a dummy argument so that the remaining hidden arguments
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// have a fixed position relative to the first hidden argument.
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// This is to facilitate library code to access hidden arguments.
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emitKernelArg(DL, Int8PtrTy, ValueKind::HiddenNone);
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}
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emitKernelArg(DL, Int8PtrTy, ValueKind::HiddenDefaultQueue);
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emitKernelArg(DL, Int8PtrTy, ValueKind::HiddenCompletionAction);
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}
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}
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void MetadataStreamer::emitKernelArg(const Argument &Arg) {
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auto Func = Arg.getParent();
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auto ArgNo = Arg.getArgNo();
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const MDNode *Node;
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StringRef Name;
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Node = Func->getMetadata("kernel_arg_name");
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if (Node && ArgNo < Node->getNumOperands())
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Name = cast<MDString>(Node->getOperand(ArgNo))->getString();
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StringRef TypeName;
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Node = Func->getMetadata("kernel_arg_type");
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if (Node && ArgNo < Node->getNumOperands())
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TypeName = cast<MDString>(Node->getOperand(ArgNo))->getString();
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StringRef BaseTypeName;
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Node = Func->getMetadata("kernel_arg_base_type");
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if (Node && ArgNo < Node->getNumOperands())
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BaseTypeName = cast<MDString>(Node->getOperand(ArgNo))->getString();
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StringRef AccQual;
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if (Arg.getType()->isPointerTy() && Arg.onlyReadsMemory() &&
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Arg.hasNoAliasAttr()) {
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AccQual = "read_only";
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} else {
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Node = Func->getMetadata("kernel_arg_access_qual");
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if (Node && ArgNo < Node->getNumOperands())
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AccQual = cast<MDString>(Node->getOperand(ArgNo))->getString();
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}
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StringRef TypeQual;
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Node = Func->getMetadata("kernel_arg_type_qual");
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if (Node && ArgNo < Node->getNumOperands())
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TypeQual = cast<MDString>(Node->getOperand(ArgNo))->getString();
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emitKernelArg(Func->getParent()->getDataLayout(), Arg.getType(),
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getValueKind(Arg.getType(), TypeQual, BaseTypeName), Name,
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TypeName, BaseTypeName, AccQual, TypeQual);
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}
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void MetadataStreamer::emitKernelArg(const DataLayout &DL, Type *Ty,
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ValueKind ValueKind, StringRef Name,
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StringRef TypeName, StringRef BaseTypeName,
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StringRef AccQual, StringRef TypeQual) {
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HSAMetadata.mKernels.back().mArgs.push_back(Kernel::Arg::Metadata());
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auto &Arg = HSAMetadata.mKernels.back().mArgs.back();
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Arg.mName = Name;
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Arg.mTypeName = TypeName;
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Arg.mSize = DL.getTypeAllocSize(Ty);
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Arg.mAlign = DL.getABITypeAlignment(Ty);
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Arg.mValueKind = ValueKind;
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Arg.mValueType = getValueType(Ty, BaseTypeName);
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if (auto PtrTy = dyn_cast<PointerType>(Ty)) {
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auto ElTy = PtrTy->getElementType();
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if (PtrTy->getAddressSpace() == AMDGPUASI.LOCAL_ADDRESS && ElTy->isSized())
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Arg.mPointeeAlign = DL.getABITypeAlignment(ElTy);
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}
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if (auto PtrTy = dyn_cast<PointerType>(Ty))
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Arg.mAddrSpaceQual = getAddressSpaceQualifer(PtrTy->getAddressSpace());
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Arg.mAccQual = getAccessQualifier(AccQual);
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// TODO: Emit Arg.mActualAccQual.
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SmallVector<StringRef, 1> SplitTypeQuals;
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TypeQual.split(SplitTypeQuals, " ", -1, false);
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for (StringRef Key : SplitTypeQuals) {
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auto P = StringSwitch<bool*>(Key)
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.Case("const", &Arg.mIsConst)
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.Case("restrict", &Arg.mIsRestrict)
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.Case("volatile", &Arg.mIsVolatile)
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.Case("pipe", &Arg.mIsPipe)
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.Default(nullptr);
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if (P)
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*P = true;
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}
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}
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void MetadataStreamer::begin(const Module &Mod) {
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AMDGPUASI = getAMDGPUAS(Mod);
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emitVersion();
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emitPrintf(Mod);
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}
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void MetadataStreamer::end() {
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std::string HSAMetadataString;
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if (toString(HSAMetadata, HSAMetadataString))
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return;
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if (DumpHSAMetadata)
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dump(HSAMetadataString);
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if (VerifyHSAMetadata)
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verify(HSAMetadataString);
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}
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void MetadataStreamer::emitKernel(
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const Function &Func,
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const Kernel::CodeProps::Metadata &CodeProps,
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const Kernel::DebugProps::Metadata &DebugProps) {
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if (Func.getCallingConv() != CallingConv::AMDGPU_KERNEL)
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return;
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HSAMetadata.mKernels.push_back(Kernel::Metadata());
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auto &Kernel = HSAMetadata.mKernels.back();
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Kernel.mName = Func.getName();
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Kernel.mSymbolName = (Twine(Func.getName()) + Twine("@kd")).str();
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emitKernelLanguage(Func);
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emitKernelAttrs(Func);
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emitKernelArgs(Func);
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HSAMetadata.mKernels.back().mCodeProps = CodeProps;
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HSAMetadata.mKernels.back().mDebugProps = DebugProps;
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}
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} // end namespace HSAMD
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} // end namespace AMDGPU
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} // end namespace llvm
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