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213 lines
7.1 KiB
213 lines
7.1 KiB
/*
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* Copyright 2010, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _FRAMEWORKS_COMPILE_SLANG_SLANG_BACKEND_H_ // NOLINT
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#define _FRAMEWORKS_COMPILE_SLANG_SLANG_BACKEND_H_
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#include "clang/AST/ASTConsumer.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/Support/raw_ostream.h"
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#include "slang.h"
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#include "slang_pragma_list.h"
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#include "slang_rs_check_ast.h"
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#include "slang_rs_foreach_lowering.h"
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#include "slang_rs_object_ref_count.h"
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#include "slang_version.h"
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namespace llvm {
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class buffer_ostream;
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class LLVMContext;
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class NamedMDNode;
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class Module;
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}
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namespace clang {
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class ASTConsumer;
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class ASTContext;
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class CodeGenOptions;
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class CodeGenerator;
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class DeclGroupRef;
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class DiagnosticsEngine;
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class FunctionDecl;
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class HeaderSearchOptions;
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class PreprocessorOptions;
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class TagDecl;
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class TargetOptions;
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class VarDecl;
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}
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namespace slang {
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class RSContext;
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class Backend : public clang::ASTConsumer {
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private:
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const clang::TargetOptions &mTargetOpts;
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llvm::Module *mpModule;
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// Output stream
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llvm::raw_ostream *mpOS;
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Slang::OutputType mOT;
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// This helps us translate Clang AST using into LLVM IR
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clang::CodeGenerator *mGen;
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// Passes
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// Passes apply on function scope in a translation unit
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llvm::legacy::FunctionPassManager *mPerFunctionPasses;
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// Passes apply on module scope
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llvm::legacy::PassManager *mPerModulePasses;
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// Passes for code emission
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llvm::legacy::FunctionPassManager *mCodeGenPasses;
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llvm::buffer_ostream mBufferOutStream;
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void CreateFunctionPasses();
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void CreateModulePasses();
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bool CreateCodeGenPasses();
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RSContext *mContext;
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clang::SourceManager &mSourceMgr;
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bool mASTPrint;
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bool mAllowRSPrefix;
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bool mIsFilterscript;
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llvm::NamedMDNode *mExportVarMetadata;
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llvm::NamedMDNode *mExportFuncMetadata;
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llvm::NamedMDNode *mExportForEachNameMetadata;
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llvm::NamedMDNode *mExportForEachSignatureMetadata;
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llvm::NamedMDNode *mExportReduceMetadata;
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llvm::NamedMDNode *mExportTypeMetadata;
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llvm::NamedMDNode *mRSObjectSlotsMetadata;
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RSObjectRefCount mRefCount;
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RSCheckAST mASTChecker;
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RSForEachLowering mForEachHandler;
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void AnnotateFunction(clang::FunctionDecl *FD);
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void dumpExportVarInfo(llvm::Module *M);
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void dumpExportFunctionInfo(llvm::Module *M);
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void dumpExportForEachInfo(llvm::Module *M);
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void dumpExportReduceInfo(llvm::Module *M);
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void dumpExportTypeInfo(llvm::Module *M);
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// Translates any rsForEach() or rsForEachWithOptions() calls inside the body
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// of FD to lower-level runtime calls to rsForEachInternal(), if FD is not a
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// kernel function itself, as indicated by isKernel being false. If isKernel
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// is true, reports an error on any calls to rsForEach() or
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// rsForEachWithOptions().
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void LowerRSForEachCall(clang::FunctionDecl* FD, bool isKernel);
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// Insert explicit padding fields into struct to follow the current
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// layout as defined by the RenderScript ABI (32-bit or 64-bit ARM).
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//
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// The padding does not change field offset or structure size -- it
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// makes explicit any padding that was implicit due to the ABI.
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// This ensures that if the frontend compiles for an ABI with
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// stricter alignment requirements than the backend compiles for,
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// the frontend and backend will still agree on structure layout
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// (field offset and structure size). This is important for 32-bit
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// x86: The frontend compiles for 32-bit ARM ABI, in which 64-bit
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// scalars are 64-bit aligned; but the 32-bit x86 ABI says that
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// 64-bit scalars are only 32-bit aligned.
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void PadStruct(clang::RecordDecl* RD);
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protected:
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llvm::LLVMContext &mLLVMContext;
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clang::DiagnosticsEngine &mDiagEngine;
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const clang::CodeGenOptions &mCodeGenOpts;
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PragmaList *mPragmas;
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unsigned int getTargetAPI() const { return mContext->getTargetAPI(); }
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// TODO These are no longer virtual from base. Look into merging into caller.
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// This handler will be invoked before Clang translates @Ctx to LLVM IR. This
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// give you an opportunity to modified the IR in AST level (scope information,
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// unoptimized IR, etc.). After the return from this method, slang will start
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// translate @Ctx into LLVM IR. One should not operate on @Ctx afterwards
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// since the changes applied on that never reflects to the LLVM module used
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// in the final codegen.
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void HandleTranslationUnitPre(clang::ASTContext &Ctx);
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// This handler will be invoked when Clang have converted AST tree to LLVM IR.
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// The @M contains the resulting LLVM IR tree. After the return from this
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// method, slang will start doing optimization and code generation for @M.
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void HandleTranslationUnitPost(llvm::Module *M);
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public:
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Backend(RSContext *Context,
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clang::DiagnosticsEngine *DiagEngine,
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const RSCCOptions &Opts,
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const clang::HeaderSearchOptions &HeaderSearchOpts,
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const clang::PreprocessorOptions &PreprocessorOpts,
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const clang::CodeGenOptions &CodeGenOpts,
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const clang::TargetOptions &TargetOpts,
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PragmaList *Pragmas,
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llvm::raw_ostream *OS,
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Slang::OutputType OT,
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clang::SourceManager &SourceMgr,
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bool AllowRSPrefix,
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bool IsFilterscript);
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virtual ~Backend();
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// Initialize - This is called to initialize the consumer, providing the
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// ASTContext.
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void Initialize(clang::ASTContext &Ctx) override;
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// TODO Clean up what should be private, protected
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// TODO Also clean up the include files
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// HandleTopLevelDecl - Handle the specified top-level declaration. This is
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// called by the parser to process every top-level Decl*. Note that D can be
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// the head of a chain of Decls (e.g. for `int a, b` the chain will have two
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// elements). Use Decl::getNextDeclarator() to walk the chain.
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bool HandleTopLevelDecl(clang::DeclGroupRef D) override;
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// HandleTranslationUnit - This method is called when the ASTs for entire
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// translation unit have been parsed.
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void HandleTranslationUnit(clang::ASTContext &Ctx) override;
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// HandleTagDeclDefinition - This callback is invoked each time a TagDecl
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// (e.g. struct, union, enum, class) is completed. This allows the client to
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// hack on the type, which can occur at any point in the file (because these
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// can be defined in declspecs).
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void HandleTagDeclDefinition(clang::TagDecl *D) override;
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// CompleteTentativeDefinition - Callback invoked at the end of a translation
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// unit to notify the consumer that the given tentative definition should be
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// completed.
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void CompleteTentativeDefinition(clang::VarDecl *D) override;
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};
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} // namespace slang
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#endif // _FRAMEWORKS_COMPILE_SLANG_SLANG_BACKEND_H_ NOLINT
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