AMDGPU.cpp source code [clang_source_code/lib/Driver/ToolChains/AMDGPU.cpp]

1	//===--- AMDGPU.cpp - AMDGPU ToolChain Implementations ----------- 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 "AMDGPU.h"
10	#include "CommonArgs.h"
11	#include "InputInfo.h"
12	#include "clang/Driver/Compilation.h"
13	#include "clang/Driver/DriverDiagnostic.h"
14	#include "llvm/Option/ArgList.h"
15
16	using namespace clang::driver;
17	using namespace clang::driver::tools;
18	using namespace clang::driver::toolchains;
19	using namespace clang;
20	using namespace llvm::opt;
21
22	void amdgpu::Linker::ConstructJob(Compilation &C, const JobAction &JA,
23	const InputInfo &Output,
24	const InputInfoList &Inputs,
25	const ArgList &Args,
26	const char *LinkingOutput) const {
27
28	std::string Linker = getToolChain().GetProgramPath(getShortName());
29	ArgStringList CmdArgs;
30	AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
31	CmdArgs.push_back("-shared");
32	CmdArgs.push_back("-o");
33	CmdArgs.push_back(Output.getFilename());
34	C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),
35	CmdArgs, Inputs));
36	}
37
38	void amdgpu::getAMDGPUTargetFeatures(const Driver &D,
39	const llvm::opt::ArgList &Args,
40	std::vector<StringRef> &Features) {
41	if (const Arg *dAbi = Args.getLastArg(options::OPT_mamdgpu_debugger_abi))
42	D.Diag(diag::err_drv_clang_unsupported) << dAbi->getAsString(Args);
43
44	handleTargetFeaturesGroup(
45	Args, Features, options::OPT_m_amdgpu_Features_Group);
46	}
47
48	/// AMDGPU Toolchain
49	AMDGPUToolChain::AMDGPUToolChain(const Driver &D, const llvm::Triple &Triple,
50	const ArgList &Args)
51	: Generic_ELF(D, Triple, Args),
52	OptionsDefault({{options::OPT_O, "3"},
53	{options::OPT_cl_std_EQ, "CL1.2"}}) {}
54
55	Tool *AMDGPUToolChain::buildLinker() const {
56	return new tools::amdgpu::Linker(*this);
57	}
58
59	DerivedArgList *
60	AMDGPUToolChain::TranslateArgs(const DerivedArgList &Args, StringRef BoundArch,
61	Action::OffloadKind DeviceOffloadKind) const {
62
63	DerivedArgList *DAL =
64	Generic_ELF::TranslateArgs(Args, BoundArch, DeviceOffloadKind);
65
66	// Do nothing if not OpenCL (-x cl)
67	if (!Args.getLastArgValue(options::OPT_x).equals("cl"))
68	return DAL;
69
70	if (!DAL)
71	DAL = new DerivedArgList(Args.getBaseArgs());
72	for (auto *A : Args)
73	DAL->append(A);
74
75	const OptTable &Opts = getDriver().getOpts();
76
77	// Phase 1 (.cl -> .bc)
78	if (Args.hasArg(options::OPT_c) && Args.hasArg(options::OPT_emit_llvm)) {
79	DAL->AddFlagArg(nullptr, Opts.getOption(getTriple().isArch64Bit()
80	? options::OPT_m64
81	: options::OPT_m32));
82
83	// Have to check OPT_O4, OPT_O0 & OPT_Ofast separately
84	// as they defined that way in Options.td
85	if (!Args.hasArg(options::OPT_O, options::OPT_O0, options::OPT_O4,
86	options::OPT_Ofast))
87	DAL->AddJoinedArg(nullptr, Opts.getOption(options::OPT_O),
88	getOptionDefault(options::OPT_O));
89	}
90
91	return DAL;
92	}
93
94	void AMDGPUToolChain::addClangTargetOptions(
95	const llvm::opt::ArgList &DriverArgs,
96	llvm::opt::ArgStringList &CC1Args,
97	Action::OffloadKind DeviceOffloadingKind) const {
98	// Default to "hidden" visibility, as object level linking will not be
99	// supported for the foreseeable future.
100	if (!DriverArgs.hasArg(options::OPT_fvisibility_EQ,
101	options::OPT_fvisibility_ms_compat)) {
102	CC1Args.push_back("-fvisibility");
103	CC1Args.push_back("hidden");
104	CC1Args.push_back("-fapply-global-visibility-to-externs");
105	}
106	}
107

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