clang 19.0.0git
AMDGPUOpenMP.cpp
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1//===- AMDGPUOpenMP.cpp - AMDGPUOpenMP ToolChain Implementation -*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "AMDGPUOpenMP.h"
10#include "AMDGPU.h"
11#include "CommonArgs.h"
12#include "ToolChains/ROCm.h"
15#include "clang/Driver/Driver.h"
19#include "clang/Driver/Tool.h"
20#include "llvm/ADT/STLExtras.h"
21#include "llvm/Support/FileSystem.h"
22#include "llvm/Support/FormatAdapters.h"
23#include "llvm/Support/FormatVariadic.h"
24#include "llvm/Support/Path.h"
25
26using namespace clang::driver;
27using namespace clang::driver::toolchains;
28using namespace clang::driver::tools;
29using namespace clang;
30using namespace llvm::opt;
31
33 const llvm::Triple &Triple,
34 const ToolChain &HostTC,
35 const ArgList &Args)
36 : ROCMToolChain(D, Triple, Args), HostTC(HostTC) {
37 // Lookup binaries into the driver directory, this is used to
38 // discover the 'amdgpu-arch' executable.
39 getProgramPaths().push_back(getDriver().Dir);
40}
41
43 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
44 Action::OffloadKind DeviceOffloadingKind) const {
45 HostTC.addClangTargetOptions(DriverArgs, CC1Args, DeviceOffloadingKind);
46
47 StringRef GPUArch = DriverArgs.getLastArgValue(options::OPT_march_EQ);
48 assert(!GPUArch.empty() && "Must have an explicit GPU arch.");
49
50 assert(DeviceOffloadingKind == Action::OFK_OpenMP &&
51 "Only OpenMP offloading kinds are supported.");
52
53 CC1Args.push_back("-target-cpu");
54 CC1Args.push_back(DriverArgs.MakeArgStringRef(GPUArch));
55 CC1Args.push_back("-fcuda-is-device");
56
57 if (DriverArgs.hasArg(options::OPT_nogpulib))
58 return;
59
60 for (auto BCFile : getDeviceLibs(DriverArgs)) {
61 CC1Args.push_back(BCFile.ShouldInternalize ? "-mlink-builtin-bitcode"
62 : "-mlink-bitcode-file");
63 CC1Args.push_back(DriverArgs.MakeArgString(BCFile.Path));
64 }
65
66 // Link the bitcode library late if we're using device LTO.
67 if (getDriver().isUsingLTO(/* IsOffload */ true))
68 return;
69}
70
71llvm::opt::DerivedArgList *AMDGPUOpenMPToolChain::TranslateArgs(
72 const llvm::opt::DerivedArgList &Args, StringRef BoundArch,
73 Action::OffloadKind DeviceOffloadKind) const {
74 DerivedArgList *DAL =
75 HostTC.TranslateArgs(Args, BoundArch, DeviceOffloadKind);
76 if (!DAL)
77 DAL = new DerivedArgList(Args.getBaseArgs());
78
79 const OptTable &Opts = getDriver().getOpts();
80
81 if (DeviceOffloadKind == Action::OFK_OpenMP) {
82 for (Arg *A : Args)
83 if (!llvm::is_contained(*DAL, A))
84 DAL->append(A);
85
86 if (!DAL->hasArg(options::OPT_march_EQ)) {
87 StringRef Arch = BoundArch;
88 if (Arch.empty()) {
89 auto ArchsOrErr = getSystemGPUArchs(Args);
90 if (!ArchsOrErr) {
91 std::string ErrMsg =
92 llvm::formatv("{0}", llvm::fmt_consume(ArchsOrErr.takeError()));
93 getDriver().Diag(diag::err_drv_undetermined_gpu_arch)
94 << llvm::Triple::getArchTypeName(getArch()) << ErrMsg << "-march";
96 } else {
97 Arch = Args.MakeArgString(ArchsOrErr->front());
98 }
99 }
100 DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_march_EQ), Arch);
101 }
102
103 return DAL;
104 }
105
106 for (Arg *A : Args) {
107 DAL->append(A);
108 }
109
110 if (!BoundArch.empty()) {
111 DAL->eraseArg(options::OPT_march_EQ);
112 DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_march_EQ),
113 BoundArch);
114 }
115
116 return DAL;
117}
118
120 ArgStringList &CC1Args) const {
123}
124
126AMDGPUOpenMPToolChain::GetCXXStdlibType(const ArgList &Args) const {
127 return HostTC.GetCXXStdlibType(Args);
128}
129
131 const ArgList &DriverArgs, ArgStringList &CC1Args) const {
132 HostTC.AddClangSystemIncludeArgs(DriverArgs, CC1Args);
133}
134
136 ArgStringList &CC1Args) const {
137 HostTC.AddIAMCUIncludeArgs(Args, CC1Args);
138}
139
141 // The AMDGPUOpenMPToolChain only supports sanitizers in the sense that it
142 // allows sanitizer arguments on the command line if they are supported by the
143 // host toolchain. The AMDGPUOpenMPToolChain will actually ignore any command
144 // line arguments for any of these "supported" sanitizers. That means that no
145 // sanitization of device code is actually supported at this time.
146 //
147 // This behavior is necessary because the host and device toolchains
148 // invocations often share the command line, so the device toolchain must
149 // tolerate flags meant only for the host toolchain.
151}
152
153VersionTuple
155 const ArgList &Args) const {
156 return HostTC.computeMSVCVersion(D, Args);
157}
158
160AMDGPUOpenMPToolChain::getDeviceLibs(const llvm::opt::ArgList &Args) const {
161 if (Args.hasArg(options::OPT_nogpulib))
162 return {};
163
164 if (!RocmInstallation->hasDeviceLibrary()) {
165 getDriver().Diag(diag::err_drv_no_rocm_device_lib) << 0;
166 return {};
167 }
168
169 StringRef GpuArch = getProcessorFromTargetID(
170 getTriple(), Args.getLastArgValue(options::OPT_march_EQ));
171
173 for (auto BCLib : getCommonDeviceLibNames(Args, GpuArch.str(),
174 /*IsOpenMP=*/true))
175 BCLibs.emplace_back(BCLib);
176
177 return BCLibs;
178}
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:77
DiagnosticBuilder Diag(unsigned DiagID) const
Definition: Driver.h:144
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:399
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:92
virtual void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const
Add warning options that need to be passed to cc1 for this target.
Definition: ToolChain.cpp:1065
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:268
const Driver & getDriver() const
Definition: ToolChain.h:252
path_list & getProgramPaths()
Definition: ToolChain.h:297
virtual llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
Definition: ToolChain.h:358
const llvm::Triple & getTriple() const
Definition: ToolChain.h:254
virtual VersionTuple computeMSVCVersion(const Driver *D, const llvm::opt::ArgList &Args) const
On Windows, returns the MSVC compatibility version.
Definition: ToolChain.cpp:1391
virtual void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add arguments to use MCU GCC toolchain includes.
Definition: ToolChain.cpp:1374
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:1137
virtual void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const
Add options that need to be passed to cc1 for this target.
Definition: ToolChain.cpp:1058
virtual void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Add the clang cc1 arguments for system include paths.
Definition: ToolChain.cpp:1053
virtual SanitizerMask getSupportedSanitizers() const
Return sanitizers which are available in this toolchain.
Definition: ToolChain.cpp:1338
SanitizerMask getSupportedSanitizers() const override
Return sanitizers which are available in this toolchain.
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override
Common warning options shared by AMDGPU HIP, OpenCL and OpenMP toolchains.
void AddIAMCUIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add arguments to use MCU GCC toolchain includes.
llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const override
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
llvm::SmallVector< BitCodeLibraryInfo, 12 > getDeviceLibs(const llvm::opt::ArgList &Args) const override
Get paths for device libraries.
CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const override
VersionTuple computeMSVCVersion(const Driver *D, const llvm::opt::ArgList &Args) const override
On Windows, returns the MSVC compatibility version.
void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add the clang cc1 arguments for system include paths.
AMDGPUOpenMPToolChain(const Driver &D, const llvm::Triple &Triple, const ToolChain &HostTC, const llvm::opt::ArgList &Args)
void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const override
Add options that need to be passed to cc1 for this target.
void addClangWarningOptions(llvm::opt::ArgStringList &CC1Args) const override
Common warning options shared by AMDGPU HIP, OpenCL and OpenMP toolchains.
Definition: AMDGPU.cpp:837
virtual Expected< SmallVector< std::string > > getSystemGPUArchs(const llvm::opt::ArgList &Args) const override
Uses amdgpu-arch tool to get arch of the system GPU.
Definition: AMDGPU.cpp:873
LazyDetector< RocmInstallationDetector > RocmInstallation
Definition: Gnu.h:290
llvm::SmallVector< std::string, 12 > getCommonDeviceLibNames(const llvm::opt::ArgList &DriverArgs, const std::string &GPUArch, bool isOpenMP=false) const
Definition: AMDGPU.cpp:996
The JSON file list parser is used to communicate input to InstallAPI.
llvm::StringRef getProcessorFromTargetID(const llvm::Triple &T, llvm::StringRef OffloadArch)
Get processor name from target ID.
Definition: TargetID.cpp:54
const char * CudaArchToString(CudaArch A)
Definition: Cuda.cpp:150