| //===----- CGHLSLRuntime.cpp - Interface to HLSL Runtimes -----------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This provides an abstract class for HLSL code generation. Concrete |
| // subclasses of this implement code generation for specific HLSL |
| // runtime libraries. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "CGHLSLRuntime.h" |
| #include "CodeGenModule.h" |
| #include "clang/Basic/TargetOptions.h" |
| #include "llvm/IR/Metadata.h" |
| #include "llvm/IR/Module.h" |
| |
| using namespace clang; |
| using namespace CodeGen; |
| using namespace llvm; |
| |
| namespace { |
| void addDxilValVersion(StringRef ValVersionStr, llvm::Module &M) { |
| // The validation of ValVersionStr is done at HLSLToolChain::TranslateArgs. |
| // Assume ValVersionStr is legal here. |
| VersionTuple Version; |
| if (Version.tryParse(ValVersionStr) || Version.getBuild() || |
| Version.getSubminor() || !Version.getMinor()) { |
| return; |
| } |
| |
| uint64_t Major = Version.getMajor(); |
| uint64_t Minor = *Version.getMinor(); |
| |
| auto &Ctx = M.getContext(); |
| IRBuilder<> B(M.getContext()); |
| MDNode *Val = MDNode::get(Ctx, {ConstantAsMetadata::get(B.getInt32(Major)), |
| ConstantAsMetadata::get(B.getInt32(Minor))}); |
| StringRef DxilValKey = "dx.valver"; |
| M.addModuleFlag(llvm::Module::ModFlagBehavior::AppendUnique, DxilValKey, Val); |
| } |
| } // namespace |
| |
| void CGHLSLRuntime::finishCodeGen() { |
| auto &TargetOpts = CGM.getTarget().getTargetOpts(); |
| |
| llvm::Module &M = CGM.getModule(); |
| addDxilValVersion(TargetOpts.DxilValidatorVersion, M); |
| } |