72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
//===- DXContainerGlobals.cpp - DXContainer global generator pass ---------===//
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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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//
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// DXContainerGlobalsPass implementation.
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//
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//===----------------------------------------------------------------------===//
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#include "DXILShaderFlags.h"
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#include "DirectX.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/CodeGen/Passes.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/Pass.h"
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#include "llvm/Transforms/Utils/ModuleUtils.h"
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using namespace llvm;
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using namespace llvm::dxil;
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namespace {
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class DXContainerGlobals : public llvm::ModulePass {
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public:
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static char ID; // Pass identification, replacement for typeid
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DXContainerGlobals() : ModulePass(ID) {
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initializeDXContainerGlobalsPass(*PassRegistry::getPassRegistry());
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}
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StringRef getPassName() const override {
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return "DXContainer Global Emitter";
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}
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bool runOnModule(Module &M) override;
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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AU.addRequired<ShaderFlagsAnalysisWrapper>();
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}
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};
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} // namespace
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bool DXContainerGlobals::runOnModule(Module &M) {
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const uint64_t Flags =
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(uint64_t)(getAnalysis<ShaderFlagsAnalysisWrapper>().getShaderFlags());
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Constant *FlagsConstant = ConstantInt::get(M.getContext(), APInt(64, Flags));
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auto *GV = new llvm::GlobalVariable(M, FlagsConstant->getType(), true,
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GlobalValue::PrivateLinkage,
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FlagsConstant, "dx.sfi0");
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GV->setSection("SFI0");
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GV->setAlignment(Align(4));
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appendToCompilerUsed(M, {GV});
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return true;
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}
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char DXContainerGlobals::ID = 0;
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INITIALIZE_PASS_BEGIN(DXContainerGlobals, "dxil-globals",
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"DXContainer Global Emitter", false, true)
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INITIALIZE_PASS_DEPENDENCY(ShaderFlagsAnalysisWrapper)
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INITIALIZE_PASS_END(DXContainerGlobals, "dxil-globals",
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"DXContainer Global Emitter", false, true)
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ModulePass *llvm::createDXContainerGlobalsPass() {
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return new DXContainerGlobals();
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}
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