93d2a2caf6
This moves DXILFinalizeLinkage before the DXIL op lowering passes so that it doesn't end up internalizing any of the `dx.op.*` functions. This also exposed a bug when the pass is run on a module with intrinsics in them - marking the intrinsics as internal will fail the validator. Fixes #117761
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
//===- DXILFinalizeLinkage.cpp - Finalize linkage of functions ------------===//
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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 "DXILFinalizeLinkage.h"
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#include "DirectX.h"
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#include "llvm/Analysis/DXILResource.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/GlobalValue.h"
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#include "llvm/IR/Metadata.h"
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#include "llvm/IR/Module.h"
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#define DEBUG_TYPE "dxil-finalize-linkage"
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using namespace llvm;
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static bool finalizeLinkage(Module &M) {
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SmallPtrSet<Function *, 8> Funcs;
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// Collect non-entry and non-exported functions to set to internal linkage.
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for (Function &EF : M.functions()) {
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if (EF.isIntrinsic())
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continue;
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if (EF.hasFnAttribute("hlsl.shader") || EF.hasFnAttribute("hlsl.export"))
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continue;
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Funcs.insert(&EF);
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}
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for (Function *F : Funcs) {
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if (F->getLinkage() == GlobalValue::ExternalLinkage)
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F->setLinkage(GlobalValue::InternalLinkage);
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if (F->isDefTriviallyDead())
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M.getFunctionList().erase(F);
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}
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return false;
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}
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PreservedAnalyses DXILFinalizeLinkage::run(Module &M,
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ModuleAnalysisManager &AM) {
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if (finalizeLinkage(M))
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return PreservedAnalyses::none();
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return PreservedAnalyses::all();
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}
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bool DXILFinalizeLinkageLegacy::runOnModule(Module &M) {
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return finalizeLinkage(M);
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}
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void DXILFinalizeLinkageLegacy::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.addPreserved<DXILResourceWrapperPass>();
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}
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char DXILFinalizeLinkageLegacy::ID = 0;
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INITIALIZE_PASS_BEGIN(DXILFinalizeLinkageLegacy, DEBUG_TYPE,
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"DXIL Finalize Linkage", false, false)
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INITIALIZE_PASS_END(DXILFinalizeLinkageLegacy, DEBUG_TYPE,
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"DXIL Finalize Linkage", false, false)
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ModulePass *llvm::createDXILFinalizeLinkageLegacyPass() {
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return new DXILFinalizeLinkageLegacy();
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}
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