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llvm-project/llvm/lib/Target/AMDGPU/AMDGPUHSAMetadataStreamer.cpp

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//===--- AMDGPUHSAMetadataStreamer.cpp --------------------------*- C++ -*-===//
//
// 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
/// AMDGPU HSA Metadata Streamer.
///
//
//===----------------------------------------------------------------------===//
#include "AMDGPUHSAMetadataStreamer.h"
#include "AMDGPU.h"
#include "AMDGPUSubtarget.h"
#include "MCTargetDesc/AMDGPUTargetStreamer.h"
#include "SIMachineFunctionInfo.h"
#include "SIProgramInfo.h"
#include "Utils/AMDGPUBaseInfo.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
static std::pair<Type *, Align> getArgumentTypeAlign(const Argument &Arg,
const DataLayout &DL) {
Type *Ty = Arg.getType();
MaybeAlign ArgAlign;
if (Arg.hasByRefAttr()) {
Ty = Arg.getParamByRefType();
ArgAlign = Arg.getParamAlign();
}
if (!ArgAlign)
ArgAlign = DL.getABITypeAlign(Ty);
return std::make_pair(Ty, *ArgAlign);
}
namespace llvm {
static cl::opt<bool> DumpHSAMetadata(
"amdgpu-dump-hsa-metadata",
cl::desc("Dump AMDGPU HSA Metadata"));
static cl::opt<bool> VerifyHSAMetadata(
"amdgpu-verify-hsa-metadata",
cl::desc("Verify AMDGPU HSA Metadata"));
namespace AMDGPU {
namespace HSAMD {
//===----------------------------------------------------------------------===//
// HSAMetadataStreamerV2
//===----------------------------------------------------------------------===//
void MetadataStreamerV2::dump(StringRef HSAMetadataString) const {
errs() << "AMDGPU HSA Metadata:\n" << HSAMetadataString << '\n';
}
void MetadataStreamerV2::verify(StringRef HSAMetadataString) const {
errs() << "AMDGPU HSA Metadata Parser Test: ";
HSAMD::Metadata FromHSAMetadataString;
if (fromString(std::string(HSAMetadataString), FromHSAMetadataString)) {
errs() << "FAIL\n";
return;
}
std::string ToHSAMetadataString;
if (toString(FromHSAMetadataString, ToHSAMetadataString)) {
errs() << "FAIL\n";
return;
}
errs() << (HSAMetadataString == ToHSAMetadataString ? "PASS" : "FAIL")
<< '\n';
if (HSAMetadataString != ToHSAMetadataString) {
errs() << "Original input: " << HSAMetadataString << '\n'
<< "Produced output: " << ToHSAMetadataString << '\n';
}
}
AccessQualifier
MetadataStreamerV2::getAccessQualifier(StringRef AccQual) const {
if (AccQual.empty())
return AccessQualifier::Unknown;
return StringSwitch<AccessQualifier>(AccQual)
.Case("read_only", AccessQualifier::ReadOnly)
.Case("write_only", AccessQualifier::WriteOnly)
.Case("read_write", AccessQualifier::ReadWrite)
.Default(AccessQualifier::Default);
}
AddressSpaceQualifier
MetadataStreamerV2::getAddressSpaceQualifier(
unsigned AddressSpace) const {
switch (AddressSpace) {
case AMDGPUAS::PRIVATE_ADDRESS:
return AddressSpaceQualifier::Private;
case AMDGPUAS::GLOBAL_ADDRESS:
return AddressSpaceQualifier::Global;
case AMDGPUAS::CONSTANT_ADDRESS:
return AddressSpaceQualifier::Constant;
case AMDGPUAS::LOCAL_ADDRESS:
return AddressSpaceQualifier::Local;
case AMDGPUAS::FLAT_ADDRESS:
return AddressSpaceQualifier::Generic;
case AMDGPUAS::REGION_ADDRESS:
return AddressSpaceQualifier::Region;
default:
return AddressSpaceQualifier::Unknown;
}
}
ValueKind MetadataStreamerV2::getValueKind(Type *Ty, StringRef TypeQual,
StringRef BaseTypeName) const {
if (TypeQual.find("pipe") != StringRef::npos)
return ValueKind::Pipe;
return StringSwitch<ValueKind>(BaseTypeName)
.Case("image1d_t", ValueKind::Image)
.Case("image1d_array_t", ValueKind::Image)
.Case("image1d_buffer_t", ValueKind::Image)
.Case("image2d_t", ValueKind::Image)
.Case("image2d_array_t", ValueKind::Image)
.Case("image2d_array_depth_t", ValueKind::Image)
.Case("image2d_array_msaa_t", ValueKind::Image)
.Case("image2d_array_msaa_depth_t", ValueKind::Image)
.Case("image2d_depth_t", ValueKind::Image)
.Case("image2d_msaa_t", ValueKind::Image)
.Case("image2d_msaa_depth_t", ValueKind::Image)
.Case("image3d_t", ValueKind::Image)
.Case("sampler_t", ValueKind::Sampler)
.Case("queue_t", ValueKind::Queue)
.Default(isa<PointerType>(Ty) ?
(Ty->getPointerAddressSpace() ==
AMDGPUAS::LOCAL_ADDRESS ?
ValueKind::DynamicSharedPointer :
ValueKind::GlobalBuffer) :
ValueKind::ByValue);
}
std::string MetadataStreamerV2::getTypeName(Type *Ty, bool Signed) const {
switch (Ty->getTypeID()) {
case Type::IntegerTyID: {
if (!Signed)
return (Twine('u') + getTypeName(Ty, true)).str();
auto BitWidth = Ty->getIntegerBitWidth();
switch (BitWidth) {
case 8:
return "char";
case 16:
return "short";
case 32:
return "int";
case 64:
return "long";
default:
return (Twine('i') + Twine(BitWidth)).str();
}
}
case Type::HalfTyID:
return "half";
case Type::FloatTyID:
return "float";
case Type::DoubleTyID:
return "double";
case Type::FixedVectorTyID: {
auto VecTy = cast<FixedVectorType>(Ty);
auto ElTy = VecTy->getElementType();
auto NumElements = VecTy->getNumElements();
return (Twine(getTypeName(ElTy, Signed)) + Twine(NumElements)).str();
}
default:
return "unknown";
}
}
std::vector<uint32_t>
MetadataStreamerV2::getWorkGroupDimensions(MDNode *Node) const {
std::vector<uint32_t> Dims;
if (Node->getNumOperands() != 3)
return Dims;
for (auto &Op : Node->operands())
Dims.push_back(mdconst::extract<ConstantInt>(Op)->getZExtValue());
return Dims;
}
Kernel::CodeProps::Metadata
MetadataStreamerV2::getHSACodeProps(const MachineFunction &MF,
const SIProgramInfo &ProgramInfo) const {
const GCNSubtarget &STM = MF.getSubtarget<GCNSubtarget>();
const SIMachineFunctionInfo &MFI = *MF.getInfo<SIMachineFunctionInfo>();
HSAMD::Kernel::CodeProps::Metadata HSACodeProps;
const Function &F = MF.getFunction();
assert(F.getCallingConv() == CallingConv::AMDGPU_KERNEL ||
F.getCallingConv() == CallingConv::SPIR_KERNEL);
Align MaxKernArgAlign;
HSACodeProps.mKernargSegmentSize = STM.getKernArgSegmentSize(F,
MaxKernArgAlign);
HSACodeProps.mGroupSegmentFixedSize = ProgramInfo.LDSSize;
HSACodeProps.mPrivateSegmentFixedSize = ProgramInfo.ScratchSize;
HSACodeProps.mKernargSegmentAlign =
std::max(MaxKernArgAlign, Align(4)).value();
HSACodeProps.mWavefrontSize = STM.getWavefrontSize();
HSACodeProps.mNumSGPRs = ProgramInfo.NumSGPR;
HSACodeProps.mNumVGPRs = ProgramInfo.NumVGPR;
HSACodeProps.mMaxFlatWorkGroupSize = MFI.getMaxFlatWorkGroupSize();
HSACodeProps.mIsDynamicCallStack = ProgramInfo.DynamicCallStack;
HSACodeProps.mIsXNACKEnabled = STM.isXNACKEnabled();
HSACodeProps.mNumSpilledSGPRs = MFI.getNumSpilledSGPRs();
HSACodeProps.mNumSpilledVGPRs = MFI.getNumSpilledVGPRs();
return HSACodeProps;
}
Kernel::DebugProps::Metadata
MetadataStreamerV2::getHSADebugProps(const MachineFunction &MF,
const SIProgramInfo &ProgramInfo) const {
return HSAMD::Kernel::DebugProps::Metadata();
}
void MetadataStreamerV2::emitVersion() {
auto &Version = HSAMetadata.mVersion;
Version.push_back(VersionMajor);
Version.push_back(VersionMinor);
}
void MetadataStreamerV2::emitPrintf(const Module &Mod) {
auto &Printf = HSAMetadata.mPrintf;
auto Node = Mod.getNamedMetadata("llvm.printf.fmts");
if (!Node)
return;
for (auto Op : Node->operands())
if (Op->getNumOperands())
Printf.push_back(
std::string(cast<MDString>(Op->getOperand(0))->getString()));
}
void MetadataStreamerV2::emitKernelLanguage(const Function &Func) {
auto &Kernel = HSAMetadata.mKernels.back();
// TODO: What about other languages?
auto Node = Func.getParent()->getNamedMetadata("opencl.ocl.version");
if (!Node || !Node->getNumOperands())
return;
auto Op0 = Node->getOperand(0);
if (Op0->getNumOperands() <= 1)
return;
Kernel.mLanguage = "OpenCL C";
Kernel.mLanguageVersion.push_back(
mdconst::extract<ConstantInt>(Op0->getOperand(0))->getZExtValue());
Kernel.mLanguageVersion.push_back(
mdconst::extract<ConstantInt>(Op0->getOperand(1))->getZExtValue());
}
void MetadataStreamerV2::emitKernelAttrs(const Function &Func) {
auto &Attrs = HSAMetadata.mKernels.back().mAttrs;
if (auto Node = Func.getMetadata("reqd_work_group_size"))
Attrs.mReqdWorkGroupSize = getWorkGroupDimensions(Node);
if (auto Node = Func.getMetadata("work_group_size_hint"))
Attrs.mWorkGroupSizeHint = getWorkGroupDimensions(Node);
if (auto Node = Func.getMetadata("vec_type_hint")) {
Attrs.mVecTypeHint = getTypeName(
cast<ValueAsMetadata>(Node->getOperand(0))->getType(),
mdconst::extract<ConstantInt>(Node->getOperand(1))->getZExtValue());
}
if (Func.hasFnAttribute("runtime-handle")) {
Attrs.mRuntimeHandle =
Func.getFnAttribute("runtime-handle").getValueAsString().str();
}
}
void MetadataStreamerV2::emitKernelArgs(const Function &Func) {
for (auto &Arg : Func.args())
emitKernelArg(Arg);
emitHiddenKernelArgs(Func);
}
void MetadataStreamerV2::emitKernelArg(const Argument &Arg) {
auto Func = Arg.getParent();
auto ArgNo = Arg.getArgNo();
const MDNode *Node;
StringRef Name;
Node = Func->getMetadata("kernel_arg_name");
if (Node && ArgNo < Node->getNumOperands())
Name = cast<MDString>(Node->getOperand(ArgNo))->getString();
else if (Arg.hasName())
Name = Arg.getName();
StringRef TypeName;
Node = Func->getMetadata("kernel_arg_type");
if (Node && ArgNo < Node->getNumOperands())
TypeName = cast<MDString>(Node->getOperand(ArgNo))->getString();
StringRef BaseTypeName;
Node = Func->getMetadata("kernel_arg_base_type");
if (Node && ArgNo < Node->getNumOperands())
BaseTypeName = cast<MDString>(Node->getOperand(ArgNo))->getString();
StringRef AccQual;
if (Arg.getType()->isPointerTy() && Arg.onlyReadsMemory() &&
Arg.hasNoAliasAttr()) {
AccQual = "read_only";
} else {
Node = Func->getMetadata("kernel_arg_access_qual");
if (Node && ArgNo < Node->getNumOperands())
AccQual = cast<MDString>(Node->getOperand(ArgNo))->getString();
}
StringRef TypeQual;
Node = Func->getMetadata("kernel_arg_type_qual");
if (Node && ArgNo < Node->getNumOperands())
TypeQual = cast<MDString>(Node->getOperand(ArgNo))->getString();
const DataLayout &DL = Func->getParent()->getDataLayout();
MaybeAlign PointeeAlign;
if (auto PtrTy = dyn_cast<PointerType>(Arg.getType())) {
if (PtrTy->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS) {
// FIXME: Should report this for all address spaces
PointeeAlign = DL.getValueOrABITypeAlignment(Arg.getParamAlign(),
PtrTy->getElementType());
}
}
Type *ArgTy;
Align ArgAlign;
std::tie(ArgTy, ArgAlign) = getArgumentTypeAlign(Arg, DL);
emitKernelArg(DL, ArgTy, ArgAlign,
getValueKind(ArgTy, TypeQual, BaseTypeName), PointeeAlign, Name,
TypeName, BaseTypeName, AccQual, TypeQual);
}
void MetadataStreamerV2::emitKernelArg(const DataLayout &DL, Type *Ty,
Align Alignment, ValueKind ValueKind,
MaybeAlign PointeeAlign, StringRef Name,
StringRef TypeName,
StringRef BaseTypeName,
StringRef AccQual, StringRef TypeQual) {
HSAMetadata.mKernels.back().mArgs.push_back(Kernel::Arg::Metadata());
auto &Arg = HSAMetadata.mKernels.back().mArgs.back();
Arg.mName = std::string(Name);
Arg.mTypeName = std::string(TypeName);
Arg.mSize = DL.getTypeAllocSize(Ty);
Arg.mAlign = Alignment.value();
Arg.mValueKind = ValueKind;
Arg.mPointeeAlign = PointeeAlign ? PointeeAlign->value() : 0;
if (auto PtrTy = dyn_cast<PointerType>(Ty))
Arg.mAddrSpaceQual = getAddressSpaceQualifier(PtrTy->getAddressSpace());
Arg.mAccQual = getAccessQualifier(AccQual);
// TODO: Emit Arg.mActualAccQual.
SmallVector<StringRef, 1> SplitTypeQuals;
TypeQual.split(SplitTypeQuals, " ", -1, false);
for (StringRef Key : SplitTypeQuals) {
auto P = StringSwitch<bool*>(Key)
.Case("const", &Arg.mIsConst)
.Case("restrict", &Arg.mIsRestrict)
.Case("volatile", &Arg.mIsVolatile)
.Case("pipe", &Arg.mIsPipe)
.Default(nullptr);
if (P)
*P = true;
}
}
void MetadataStreamerV2::emitHiddenKernelArgs(const Function &Func) {
int HiddenArgNumBytes =
getIntegerAttribute(Func, "amdgpu-implicitarg-num-bytes", 0);
if (!HiddenArgNumBytes)
return;
auto &DL = Func.getParent()->getDataLayout();
auto Int64Ty = Type::getInt64Ty(Func.getContext());
if (HiddenArgNumBytes >= 8)
emitKernelArg(DL, Int64Ty, Align(8), ValueKind::HiddenGlobalOffsetX);
if (HiddenArgNumBytes >= 16)
emitKernelArg(DL, Int64Ty, Align(8), ValueKind::HiddenGlobalOffsetY);
if (HiddenArgNumBytes >= 24)
emitKernelArg(DL, Int64Ty, Align(8), ValueKind::HiddenGlobalOffsetZ);
auto Int8PtrTy = Type::getInt8PtrTy(Func.getContext(),
AMDGPUAS::GLOBAL_ADDRESS);
// Emit "printf buffer" argument if printf is used, otherwise emit dummy
// "none" argument.
if (HiddenArgNumBytes >= 32) {
if (Func.getParent()->getNamedMetadata("llvm.printf.fmts"))
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenPrintfBuffer);
else if (Func.getParent()->getFunction("__ockl_hostcall_internal")) {
// The printf runtime binding pass should have ensured that hostcall and
// printf are not used in the same module.
assert(!Func.getParent()->getNamedMetadata("llvm.printf.fmts"));
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenHostcallBuffer);
} else
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenNone);
}
// Emit "default queue" and "completion action" arguments if enqueue kernel is
// used, otherwise emit dummy "none" arguments.
if (HiddenArgNumBytes >= 48) {
if (Func.hasFnAttribute("calls-enqueue-kernel")) {
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenDefaultQueue);
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenCompletionAction);
} else {
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenNone);
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenNone);
}
}
// Emit the pointer argument for multi-grid object.
if (HiddenArgNumBytes >= 56)
emitKernelArg(DL, Int8PtrTy, Align(8), ValueKind::HiddenMultiGridSyncArg);
}
bool MetadataStreamerV2::emitTo(AMDGPUTargetStreamer &TargetStreamer) {
return TargetStreamer.EmitHSAMetadata(getHSAMetadata());
}
void MetadataStreamerV2::begin(const Module &Mod) {
emitVersion();
emitPrintf(Mod);
}
void MetadataStreamerV2::end() {
std::string HSAMetadataString;
if (toString(HSAMetadata, HSAMetadataString))
return;
if (DumpHSAMetadata)
dump(HSAMetadataString);
if (VerifyHSAMetadata)
verify(HSAMetadataString);
}
void MetadataStreamerV2::emitKernel(const MachineFunction &MF,
const SIProgramInfo &ProgramInfo) {
auto &Func = MF.getFunction();
if (Func.getCallingConv() != CallingConv::AMDGPU_KERNEL)
return;
auto CodeProps = getHSACodeProps(MF, ProgramInfo);
auto DebugProps = getHSADebugProps(MF, ProgramInfo);
HSAMetadata.mKernels.push_back(Kernel::Metadata());
auto &Kernel = HSAMetadata.mKernels.back();
Kernel.mName = std::string(Func.getName());
Kernel.mSymbolName = (Twine(Func.getName()) + Twine("@kd")).str();
emitKernelLanguage(Func);
emitKernelAttrs(Func);
emitKernelArgs(Func);
HSAMetadata.mKernels.back().mCodeProps = CodeProps;
HSAMetadata.mKernels.back().mDebugProps = DebugProps;
}
//===----------------------------------------------------------------------===//
// HSAMetadataStreamerV3
//===----------------------------------------------------------------------===//
void MetadataStreamerV3::dump(StringRef HSAMetadataString) const {
errs() << "AMDGPU HSA Metadata:\n" << HSAMetadataString << '\n';
}
void MetadataStreamerV3::verify(StringRef HSAMetadataString) const {
errs() << "AMDGPU HSA Metadata Parser Test: ";
msgpack::Document FromHSAMetadataString;
if (!FromHSAMetadataString.fromYAML(HSAMetadataString)) {
errs() << "FAIL\n";
return;
}
std::string ToHSAMetadataString;
raw_string_ostream StrOS(ToHSAMetadataString);
FromHSAMetadataString.toYAML(StrOS);
errs() << (HSAMetadataString == StrOS.str() ? "PASS" : "FAIL") << '\n';
if (HSAMetadataString != ToHSAMetadataString) {
errs() << "Original input: " << HSAMetadataString << '\n'
<< "Produced output: " << StrOS.str() << '\n';
}
}
Optional<StringRef>
MetadataStreamerV3::getAccessQualifier(StringRef AccQual) const {
return StringSwitch<Optional<StringRef>>(AccQual)
.Case("read_only", StringRef("read_only"))
.Case("write_only", StringRef("write_only"))
.Case("read_write", StringRef("read_write"))
.Default(None);
}
Optional<StringRef>
MetadataStreamerV3::getAddressSpaceQualifier(unsigned AddressSpace) const {
switch (AddressSpace) {
case AMDGPUAS::PRIVATE_ADDRESS:
return StringRef("private");
case AMDGPUAS::GLOBAL_ADDRESS:
return StringRef("global");
case AMDGPUAS::CONSTANT_ADDRESS:
return StringRef("constant");
case AMDGPUAS::LOCAL_ADDRESS:
return StringRef("local");
case AMDGPUAS::FLAT_ADDRESS:
return StringRef("generic");
case AMDGPUAS::REGION_ADDRESS:
return StringRef("region");
default:
return None;
}
}
StringRef MetadataStreamerV3::getValueKind(Type *Ty, StringRef TypeQual,
StringRef BaseTypeName) const {
if (TypeQual.find("pipe") != StringRef::npos)
return "pipe";
return StringSwitch<StringRef>(BaseTypeName)
.Case("image1d_t", "image")
.Case("image1d_array_t", "image")
.Case("image1d_buffer_t", "image")
.Case("image2d_t", "image")
.Case("image2d_array_t", "image")
.Case("image2d_array_depth_t", "image")
.Case("image2d_array_msaa_t", "image")
.Case("image2d_array_msaa_depth_t", "image")
.Case("image2d_depth_t", "image")
.Case("image2d_msaa_t", "image")
.Case("image2d_msaa_depth_t", "image")
.Case("image3d_t", "image")
.Case("sampler_t", "sampler")
.Case("queue_t", "queue")
.Default(isa<PointerType>(Ty)
? (Ty->getPointerAddressSpace() == AMDGPUAS::LOCAL_ADDRESS
? "dynamic_shared_pointer"
: "global_buffer")
: "by_value");
}
std::string MetadataStreamerV3::getTypeName(Type *Ty, bool Signed) const {
switch (Ty->getTypeID()) {
case Type::IntegerTyID: {
if (!Signed)
return (Twine('u') + getTypeName(Ty, true)).str();
auto BitWidth = Ty->getIntegerBitWidth();
switch (BitWidth) {
case 8:
return "char";
case 16:
return "short";
case 32:
return "int";
case 64:
return "long";
default:
return (Twine('i') + Twine(BitWidth)).str();
}
}
case Type::HalfTyID:
return "half";
case Type::FloatTyID:
return "float";
case Type::DoubleTyID:
return "double";
case Type::FixedVectorTyID: {
auto VecTy = cast<FixedVectorType>(Ty);
auto ElTy = VecTy->getElementType();
auto NumElements = VecTy->getNumElements();
return (Twine(getTypeName(ElTy, Signed)) + Twine(NumElements)).str();
}
default:
return "unknown";
}
}
msgpack::ArrayDocNode
MetadataStreamerV3::getWorkGroupDimensions(MDNode *Node) const {
auto Dims = HSAMetadataDoc->getArrayNode();
if (Node->getNumOperands() != 3)
return Dims;
for (auto &Op : Node->operands())
Dims.push_back(Dims.getDocument()->getNode(
uint64_t(mdconst::extract<ConstantInt>(Op)->getZExtValue())));
return Dims;
}
void MetadataStreamerV3::emitVersion() {
auto Version = HSAMetadataDoc->getArrayNode();
Version.push_back(Version.getDocument()->getNode(VersionMajor));
Version.push_back(Version.getDocument()->getNode(VersionMinor));
getRootMetadata("amdhsa.version") = Version;
}
void MetadataStreamerV3::emitPrintf(const Module &Mod) {
auto Node = Mod.getNamedMetadata("llvm.printf.fmts");
if (!Node)
return;
auto Printf = HSAMetadataDoc->getArrayNode();
for (auto Op : Node->operands())
if (Op->getNumOperands())
Printf.push_back(Printf.getDocument()->getNode(
cast<MDString>(Op->getOperand(0))->getString(), /*Copy=*/true));
getRootMetadata("amdhsa.printf") = Printf;
}
void MetadataStreamerV3::emitKernelLanguage(const Function &Func,
msgpack::MapDocNode Kern) {
// TODO: What about other languages?
auto Node = Func.getParent()->getNamedMetadata("opencl.ocl.version");
if (!Node || !Node->getNumOperands())
return;
auto Op0 = Node->getOperand(0);
if (Op0->getNumOperands() <= 1)
return;
Kern[".language"] = Kern.getDocument()->getNode("OpenCL C");
auto LanguageVersion = Kern.getDocument()->getArrayNode();
LanguageVersion.push_back(Kern.getDocument()->getNode(
mdconst::extract<ConstantInt>(Op0->getOperand(0))->getZExtValue()));
LanguageVersion.push_back(Kern.getDocument()->getNode(
mdconst::extract<ConstantInt>(Op0->getOperand(1))->getZExtValue()));
Kern[".language_version"] = LanguageVersion;
}
void MetadataStreamerV3::emitKernelAttrs(const Function &Func,
msgpack::MapDocNode Kern) {
if (auto Node = Func.getMetadata("reqd_work_group_size"))
Kern[".reqd_workgroup_size"] = getWorkGroupDimensions(Node);
if (auto Node = Func.getMetadata("work_group_size_hint"))
Kern[".workgroup_size_hint"] = getWorkGroupDimensions(Node);
if (auto Node = Func.getMetadata("vec_type_hint")) {
Kern[".vec_type_hint"] = Kern.getDocument()->getNode(
getTypeName(
cast<ValueAsMetadata>(Node->getOperand(0))->getType(),
mdconst::extract<ConstantInt>(Node->getOperand(1))->getZExtValue()),
/*Copy=*/true);
}
if (Func.hasFnAttribute("runtime-handle")) {
Kern[".device_enqueue_symbol"] = Kern.getDocument()->getNode(
Func.getFnAttribute("runtime-handle").getValueAsString().str(),
/*Copy=*/true);
}
}
void MetadataStreamerV3::emitKernelArgs(const Function &Func,
msgpack::MapDocNode Kern) {
unsigned Offset = 0;
auto Args = HSAMetadataDoc->getArrayNode();
for (auto &Arg : Func.args())
emitKernelArg(Arg, Offset, Args);
emitHiddenKernelArgs(Func, Offset, Args);
Kern[".args"] = Args;
}
void MetadataStreamerV3::emitKernelArg(const Argument &Arg, unsigned &Offset,
msgpack::ArrayDocNode Args) {
auto Func = Arg.getParent();
auto ArgNo = Arg.getArgNo();
const MDNode *Node;
StringRef Name;
Node = Func->getMetadata("kernel_arg_name");
if (Node && ArgNo < Node->getNumOperands())
Name = cast<MDString>(Node->getOperand(ArgNo))->getString();
else if (Arg.hasName())
Name = Arg.getName();
StringRef TypeName;
Node = Func->getMetadata("kernel_arg_type");
if (Node && ArgNo < Node->getNumOperands())
TypeName = cast<MDString>(Node->getOperand(ArgNo))->getString();
StringRef BaseTypeName;
Node = Func->getMetadata("kernel_arg_base_type");
if (Node && ArgNo < Node->getNumOperands())
BaseTypeName = cast<MDString>(Node->getOperand(ArgNo))->getString();
StringRef AccQual;
if (Arg.getType()->isPointerTy() && Arg.onlyReadsMemory() &&
Arg.hasNoAliasAttr()) {
AccQual = "read_only";
} else {
Node = Func->getMetadata("kernel_arg_access_qual");
if (Node && ArgNo < Node->getNumOperands())
AccQual = cast<MDString>(Node->getOperand(ArgNo))->getString();
}
StringRef TypeQual;
Node = Func->getMetadata("kernel_arg_type_qual");
if (Node && ArgNo < Node->getNumOperands())
TypeQual = cast<MDString>(Node->getOperand(ArgNo))->getString();
const DataLayout &DL = Func->getParent()->getDataLayout();
MaybeAlign PointeeAlign;
Type *Ty = Arg.hasByRefAttr() ? Arg.getParamByRefType() : Arg.getType();
// FIXME: Need to distinguish in memory alignment from pointer alignment.
if (auto PtrTy = dyn_cast<PointerType>(Ty)) {
if (PtrTy->getAddressSpace() == AMDGPUAS::LOCAL_ADDRESS) {
PointeeAlign = DL.getValueOrABITypeAlignment(Arg.getParamAlign(),
PtrTy->getElementType());
}
}
// There's no distinction between byval aggregates and raw aggregates.
Type *ArgTy;
Align ArgAlign;
std::tie(ArgTy, ArgAlign) = getArgumentTypeAlign(Arg, DL);
emitKernelArg(DL, ArgTy, ArgAlign,
getValueKind(ArgTy, TypeQual, BaseTypeName), Offset, Args,
PointeeAlign, Name, TypeName, BaseTypeName, AccQual, TypeQual);
}
void MetadataStreamerV3::emitKernelArg(
const DataLayout &DL, Type *Ty, Align Alignment, StringRef ValueKind,
unsigned &Offset, msgpack::ArrayDocNode Args, MaybeAlign PointeeAlign,
StringRef Name, StringRef TypeName, StringRef BaseTypeName,
StringRef AccQual, StringRef TypeQual) {
auto Arg = Args.getDocument()->getMapNode();
if (!Name.empty())
Arg[".name"] = Arg.getDocument()->getNode(Name, /*Copy=*/true);
if (!TypeName.empty())
Arg[".type_name"] = Arg.getDocument()->getNode(TypeName, /*Copy=*/true);
auto Size = DL.getTypeAllocSize(Ty);
Arg[".size"] = Arg.getDocument()->getNode(Size);
Offset = alignTo(Offset, Alignment);
Arg[".offset"] = Arg.getDocument()->getNode(Offset);
Offset += Size;
Arg[".value_kind"] = Arg.getDocument()->getNode(ValueKind, /*Copy=*/true);
if (PointeeAlign)
Arg[".pointee_align"] = Arg.getDocument()->getNode(PointeeAlign->value());
if (auto PtrTy = dyn_cast<PointerType>(Ty))
if (auto Qualifier = getAddressSpaceQualifier(PtrTy->getAddressSpace()))
Arg[".address_space"] = Arg.getDocument()->getNode(*Qualifier, /*Copy=*/true);
if (auto AQ = getAccessQualifier(AccQual))
Arg[".access"] = Arg.getDocument()->getNode(*AQ, /*Copy=*/true);
// TODO: Emit Arg[".actual_access"].
SmallVector<StringRef, 1> SplitTypeQuals;
TypeQual.split(SplitTypeQuals, " ", -1, false);
for (StringRef Key : SplitTypeQuals) {
if (Key == "const")
Arg[".is_const"] = Arg.getDocument()->getNode(true);
else if (Key == "restrict")
Arg[".is_restrict"] = Arg.getDocument()->getNode(true);
else if (Key == "volatile")
Arg[".is_volatile"] = Arg.getDocument()->getNode(true);
else if (Key == "pipe")
Arg[".is_pipe"] = Arg.getDocument()->getNode(true);
}
Args.push_back(Arg);
}
void MetadataStreamerV3::emitHiddenKernelArgs(const Function &Func,
unsigned &Offset,
msgpack::ArrayDocNode Args) {
int HiddenArgNumBytes =
getIntegerAttribute(Func, "amdgpu-implicitarg-num-bytes", 0);
if (!HiddenArgNumBytes)
return;
auto &DL = Func.getParent()->getDataLayout();
auto Int64Ty = Type::getInt64Ty(Func.getContext());
if (HiddenArgNumBytes >= 8)
emitKernelArg(DL, Int64Ty, Align(8), "hidden_global_offset_x", Offset,
Args);
if (HiddenArgNumBytes >= 16)
emitKernelArg(DL, Int64Ty, Align(8), "hidden_global_offset_y", Offset,
Args);
if (HiddenArgNumBytes >= 24)
emitKernelArg(DL, Int64Ty, Align(8), "hidden_global_offset_z", Offset,
Args);
auto Int8PtrTy =
Type::getInt8PtrTy(Func.getContext(), AMDGPUAS::GLOBAL_ADDRESS);
// Emit "printf buffer" argument if printf is used, otherwise emit dummy
// "none" argument.
if (HiddenArgNumBytes >= 32) {
if (Func.getParent()->getNamedMetadata("llvm.printf.fmts"))
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_printf_buffer", Offset,
Args);
else if (Func.getParent()->getFunction("__ockl_hostcall_internal")) {
// The printf runtime binding pass should have ensured that hostcall and
// printf are not used in the same module.
assert(!Func.getParent()->getNamedMetadata("llvm.printf.fmts"));
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_hostcall_buffer", Offset,
Args);
} else
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_none", Offset, Args);
}
// Emit "default queue" and "completion action" arguments if enqueue kernel is
// used, otherwise emit dummy "none" arguments.
if (HiddenArgNumBytes >= 48) {
if (Func.hasFnAttribute("calls-enqueue-kernel")) {
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_default_queue", Offset,
Args);
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_completion_action", Offset,
Args);
} else {
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_none", Offset, Args);
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_none", Offset, Args);
}
}
// Emit the pointer argument for multi-grid object.
if (HiddenArgNumBytes >= 56)
emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_multigrid_sync_arg", Offset,
Args);
}
msgpack::MapDocNode
MetadataStreamerV3::getHSAKernelProps(const MachineFunction &MF,
const SIProgramInfo &ProgramInfo) const {
const GCNSubtarget &STM = MF.getSubtarget<GCNSubtarget>();
const SIMachineFunctionInfo &MFI = *MF.getInfo<SIMachineFunctionInfo>();
const Function &F = MF.getFunction();
auto Kern = HSAMetadataDoc->getMapNode();
Align MaxKernArgAlign;
Kern[".kernarg_segment_size"] = Kern.getDocument()->getNode(
STM.getKernArgSegmentSize(F, MaxKernArgAlign));
Kern[".group_segment_fixed_size"] =
Kern.getDocument()->getNode(ProgramInfo.LDSSize);
Kern[".private_segment_fixed_size"] =
Kern.getDocument()->getNode(ProgramInfo.ScratchSize);
Kern[".kernarg_segment_align"] =
Kern.getDocument()->getNode(std::max(Align(4), MaxKernArgAlign).value());
Kern[".wavefront_size"] =
Kern.getDocument()->getNode(STM.getWavefrontSize());
Kern[".sgpr_count"] = Kern.getDocument()->getNode(ProgramInfo.NumSGPR);
Kern[".vgpr_count"] = Kern.getDocument()->getNode(ProgramInfo.NumVGPR);
Kern[".max_flat_workgroup_size"] =
Kern.getDocument()->getNode(MFI.getMaxFlatWorkGroupSize());
Kern[".sgpr_spill_count"] =
Kern.getDocument()->getNode(MFI.getNumSpilledSGPRs());
Kern[".vgpr_spill_count"] =
Kern.getDocument()->getNode(MFI.getNumSpilledVGPRs());
return Kern;
}
bool MetadataStreamerV3::emitTo(AMDGPUTargetStreamer &TargetStreamer) {
return TargetStreamer.EmitHSAMetadata(*HSAMetadataDoc, true);
}
void MetadataStreamerV3::begin(const Module &Mod) {
emitVersion();
emitPrintf(Mod);
getRootMetadata("amdhsa.kernels") = HSAMetadataDoc->getArrayNode();
}
void MetadataStreamerV3::end() {
std::string HSAMetadataString;
raw_string_ostream StrOS(HSAMetadataString);
HSAMetadataDoc->toYAML(StrOS);
if (DumpHSAMetadata)
dump(StrOS.str());
if (VerifyHSAMetadata)
verify(StrOS.str());
}
void MetadataStreamerV3::emitKernel(const MachineFunction &MF,
const SIProgramInfo &ProgramInfo) {
auto &Func = MF.getFunction();
auto Kern = getHSAKernelProps(MF, ProgramInfo);
assert(Func.getCallingConv() == CallingConv::AMDGPU_KERNEL ||
Func.getCallingConv() == CallingConv::SPIR_KERNEL);
auto Kernels =
getRootMetadata("amdhsa.kernels").getArray(/*Convert=*/true);
{
Kern[".name"] = Kern.getDocument()->getNode(Func.getName());
Kern[".symbol"] = Kern.getDocument()->getNode(
(Twine(Func.getName()) + Twine(".kd")).str(), /*Copy=*/true);
emitKernelLanguage(Func, Kern);
emitKernelAttrs(Func, Kern);
emitKernelArgs(Func, Kern);
}
Kernels.push_back(Kern);
}
} // end namespace HSAMD
} // end namespace AMDGPU
} // end namespace llvm
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