0045d01af9
This patch adds a toolchain (TC) for SPIR-V along with the
following changes in Driver and base ToolChain and Tool.
This is required to provide a mechanism in clang to bypass
SPIR-V backend in LLVM for SPIR-V until it lands in LLVM and
matures.
The SPIR-V code is generated by the SPIRV-LLVM translator tool
named 'llvm-spirv' that is sought in 'PATH'.
The compilation phases/actions should be bound for SPIR-V in
the meantime as following:
compile -> tools::Clang
backend -> tools::SPIRV::Translator
assemble -> tools::SPIRV::Translator
However, Driver’s ToolSelector collapses compile-backend-assemble
and compile-backend sequences to tools::Clang. To prevent this,
added new {use,has}IntegratedBackend properties in ToolChain and
Tool to which the ToolSelector reacts on, and which SPIR-V TC
overrides.
Linking of multiple input files is currently not supported but
can be added separately.
Differential Revision: https://reviews.llvm.org/D112410
Co-authored-by: Henry Linjamäki <henry.linjamaki@parmance.com>
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
//===--- SPIRV.cpp - SPIR-V Tool Implementations ----------------*- 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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#include "SPIRV.h"
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#include "CommonArgs.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/InputInfo.h"
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#include "clang/Driver/Options.h"
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using namespace clang::driver;
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using namespace clang::driver::toolchains;
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using namespace clang::driver::tools;
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using namespace llvm::opt;
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void SPIRV::constructTranslateCommand(Compilation &C, const Tool &T,
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const JobAction &JA,
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const InputInfo &Output,
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const InputInfo &Input,
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const llvm::opt::ArgStringList &Args) {
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llvm::opt::ArgStringList CmdArgs(Args);
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CmdArgs.push_back(Input.getFilename());
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if (Input.getType() == types::TY_PP_Asm)
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CmdArgs.push_back("-to-binary");
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if (Output.getType() == types::TY_PP_Asm)
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CmdArgs.push_back("--spirv-tools-dis");
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CmdArgs.append({"-o", Output.getFilename()});
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const char *Exec =
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C.getArgs().MakeArgString(T.getToolChain().GetProgramPath("llvm-spirv"));
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C.addCommand(std::make_unique<Command>(JA, T, ResponseFileSupport::None(),
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Exec, CmdArgs, Input, Output));
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}
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void SPIRV::Translator::ConstructJob(Compilation &C, const JobAction &JA,
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const InputInfo &Output,
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const InputInfoList &Inputs,
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const ArgList &Args,
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const char *LinkingOutput) const {
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claimNoWarnArgs(Args);
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if (Inputs.size() != 1)
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llvm_unreachable("Invalid number of input files.");
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constructTranslateCommand(C, *this, JA, Output, Inputs[0], {});
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}
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clang::driver::Tool *SPIRVToolChain::getTranslator() const {
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if (!Translator)
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Translator = std::make_unique<SPIRV::Translator>(*this);
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return Translator.get();
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}
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clang::driver::Tool *SPIRVToolChain::SelectTool(const JobAction &JA) const {
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Action::ActionClass AC = JA.getKind();
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return SPIRVToolChain::getTool(AC);
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}
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clang::driver::Tool *SPIRVToolChain::getTool(Action::ActionClass AC) const {
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switch (AC) {
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default:
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break;
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case Action::BackendJobClass:
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case Action::AssembleJobClass:
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return SPIRVToolChain::getTranslator();
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}
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return ToolChain::getTool(AC);
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}
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