1758 lines
58 KiB
C++
1758 lines
58 KiB
C++
//===--- ParsePragma.cpp - Language specific pragma parsing ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the language specific #pragma handlers.
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//
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//===----------------------------------------------------------------------===//
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#include "RAIIObjectsForParser.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Parse/ParseDiagnostic.h"
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#include "clang/Parse/Parser.h"
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#include "clang/Sema/LoopHint.h"
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#include "clang/Sema/Scope.h"
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#include "llvm/ADT/StringSwitch.h"
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using namespace clang;
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namespace {
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struct PragmaAlignHandler : public PragmaHandler {
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explicit PragmaAlignHandler() : PragmaHandler("align") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaGCCVisibilityHandler : public PragmaHandler {
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explicit PragmaGCCVisibilityHandler() : PragmaHandler("visibility") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaOptionsHandler : public PragmaHandler {
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explicit PragmaOptionsHandler() : PragmaHandler("options") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaPackHandler : public PragmaHandler {
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explicit PragmaPackHandler() : PragmaHandler("pack") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaMSStructHandler : public PragmaHandler {
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explicit PragmaMSStructHandler() : PragmaHandler("ms_struct") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaUnusedHandler : public PragmaHandler {
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PragmaUnusedHandler() : PragmaHandler("unused") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaWeakHandler : public PragmaHandler {
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explicit PragmaWeakHandler() : PragmaHandler("weak") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaRedefineExtnameHandler : public PragmaHandler {
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explicit PragmaRedefineExtnameHandler() : PragmaHandler("redefine_extname") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaOpenCLExtensionHandler : public PragmaHandler {
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PragmaOpenCLExtensionHandler() : PragmaHandler("EXTENSION") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaFPContractHandler : public PragmaHandler {
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PragmaFPContractHandler() : PragmaHandler("FP_CONTRACT") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaNoOpenMPHandler : public PragmaHandler {
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PragmaNoOpenMPHandler() : PragmaHandler("omp") { }
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaOpenMPHandler : public PragmaHandler {
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PragmaOpenMPHandler() : PragmaHandler("omp") { }
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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/// PragmaCommentHandler - "\#pragma comment ...".
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struct PragmaCommentHandler : public PragmaHandler {
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PragmaCommentHandler(Sema &Actions)
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: PragmaHandler("comment"), Actions(Actions) {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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private:
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Sema &Actions;
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};
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struct PragmaDetectMismatchHandler : public PragmaHandler {
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PragmaDetectMismatchHandler(Sema &Actions)
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: PragmaHandler("detect_mismatch"), Actions(Actions) {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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private:
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Sema &Actions;
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};
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struct PragmaMSPointersToMembers : public PragmaHandler {
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explicit PragmaMSPointersToMembers() : PragmaHandler("pointers_to_members") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaMSVtorDisp : public PragmaHandler {
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explicit PragmaMSVtorDisp() : PragmaHandler("vtordisp") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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struct PragmaMSPragma : public PragmaHandler {
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explicit PragmaMSPragma(const char *name) : PragmaHandler(name) {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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/// PragmaOptimizeHandler - "\#pragma clang optimize on/off".
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struct PragmaOptimizeHandler : public PragmaHandler {
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PragmaOptimizeHandler(Sema &S)
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: PragmaHandler("optimize"), Actions(S) {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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private:
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Sema &Actions;
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};
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struct PragmaLoopHintHandler : public PragmaHandler {
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PragmaLoopHintHandler() : PragmaHandler("loop") {}
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void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
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Token &FirstToken) override;
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};
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} // end namespace
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void Parser::initializePragmaHandlers() {
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AlignHandler.reset(new PragmaAlignHandler());
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PP.AddPragmaHandler(AlignHandler.get());
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GCCVisibilityHandler.reset(new PragmaGCCVisibilityHandler());
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PP.AddPragmaHandler("GCC", GCCVisibilityHandler.get());
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OptionsHandler.reset(new PragmaOptionsHandler());
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PP.AddPragmaHandler(OptionsHandler.get());
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PackHandler.reset(new PragmaPackHandler());
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PP.AddPragmaHandler(PackHandler.get());
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MSStructHandler.reset(new PragmaMSStructHandler());
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PP.AddPragmaHandler(MSStructHandler.get());
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UnusedHandler.reset(new PragmaUnusedHandler());
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PP.AddPragmaHandler(UnusedHandler.get());
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WeakHandler.reset(new PragmaWeakHandler());
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PP.AddPragmaHandler(WeakHandler.get());
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RedefineExtnameHandler.reset(new PragmaRedefineExtnameHandler());
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PP.AddPragmaHandler(RedefineExtnameHandler.get());
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FPContractHandler.reset(new PragmaFPContractHandler());
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PP.AddPragmaHandler("STDC", FPContractHandler.get());
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if (getLangOpts().OpenCL) {
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OpenCLExtensionHandler.reset(new PragmaOpenCLExtensionHandler());
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PP.AddPragmaHandler("OPENCL", OpenCLExtensionHandler.get());
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PP.AddPragmaHandler("OPENCL", FPContractHandler.get());
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}
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if (getLangOpts().OpenMP)
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OpenMPHandler.reset(new PragmaOpenMPHandler());
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else
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OpenMPHandler.reset(new PragmaNoOpenMPHandler());
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PP.AddPragmaHandler(OpenMPHandler.get());
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if (getLangOpts().MicrosoftExt) {
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MSCommentHandler.reset(new PragmaCommentHandler(Actions));
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PP.AddPragmaHandler(MSCommentHandler.get());
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MSDetectMismatchHandler.reset(new PragmaDetectMismatchHandler(Actions));
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PP.AddPragmaHandler(MSDetectMismatchHandler.get());
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MSPointersToMembers.reset(new PragmaMSPointersToMembers());
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PP.AddPragmaHandler(MSPointersToMembers.get());
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MSVtorDisp.reset(new PragmaMSVtorDisp());
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PP.AddPragmaHandler(MSVtorDisp.get());
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MSInitSeg.reset(new PragmaMSPragma("init_seg"));
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PP.AddPragmaHandler(MSInitSeg.get());
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MSDataSeg.reset(new PragmaMSPragma("data_seg"));
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PP.AddPragmaHandler(MSDataSeg.get());
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MSBSSSeg.reset(new PragmaMSPragma("bss_seg"));
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PP.AddPragmaHandler(MSBSSSeg.get());
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MSConstSeg.reset(new PragmaMSPragma("const_seg"));
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PP.AddPragmaHandler(MSConstSeg.get());
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MSCodeSeg.reset(new PragmaMSPragma("code_seg"));
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PP.AddPragmaHandler(MSCodeSeg.get());
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MSSection.reset(new PragmaMSPragma("section"));
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PP.AddPragmaHandler(MSSection.get());
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}
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OptimizeHandler.reset(new PragmaOptimizeHandler(Actions));
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PP.AddPragmaHandler("clang", OptimizeHandler.get());
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LoopHintHandler.reset(new PragmaLoopHintHandler());
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PP.AddPragmaHandler("clang", LoopHintHandler.get());
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}
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void Parser::resetPragmaHandlers() {
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// Remove the pragma handlers we installed.
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PP.RemovePragmaHandler(AlignHandler.get());
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AlignHandler.reset();
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PP.RemovePragmaHandler("GCC", GCCVisibilityHandler.get());
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GCCVisibilityHandler.reset();
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PP.RemovePragmaHandler(OptionsHandler.get());
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OptionsHandler.reset();
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PP.RemovePragmaHandler(PackHandler.get());
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PackHandler.reset();
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PP.RemovePragmaHandler(MSStructHandler.get());
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MSStructHandler.reset();
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PP.RemovePragmaHandler(UnusedHandler.get());
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UnusedHandler.reset();
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PP.RemovePragmaHandler(WeakHandler.get());
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WeakHandler.reset();
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PP.RemovePragmaHandler(RedefineExtnameHandler.get());
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RedefineExtnameHandler.reset();
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if (getLangOpts().OpenCL) {
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PP.RemovePragmaHandler("OPENCL", OpenCLExtensionHandler.get());
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OpenCLExtensionHandler.reset();
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PP.RemovePragmaHandler("OPENCL", FPContractHandler.get());
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}
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PP.RemovePragmaHandler(OpenMPHandler.get());
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OpenMPHandler.reset();
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if (getLangOpts().MicrosoftExt) {
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PP.RemovePragmaHandler(MSCommentHandler.get());
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MSCommentHandler.reset();
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PP.RemovePragmaHandler(MSDetectMismatchHandler.get());
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MSDetectMismatchHandler.reset();
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PP.RemovePragmaHandler(MSPointersToMembers.get());
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MSPointersToMembers.reset();
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PP.RemovePragmaHandler(MSVtorDisp.get());
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MSVtorDisp.reset();
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PP.RemovePragmaHandler(MSInitSeg.get());
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MSInitSeg.reset();
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PP.RemovePragmaHandler(MSDataSeg.get());
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MSDataSeg.reset();
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PP.RemovePragmaHandler(MSBSSSeg.get());
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MSBSSSeg.reset();
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PP.RemovePragmaHandler(MSConstSeg.get());
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MSConstSeg.reset();
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PP.RemovePragmaHandler(MSCodeSeg.get());
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MSCodeSeg.reset();
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PP.RemovePragmaHandler(MSSection.get());
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MSSection.reset();
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}
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PP.RemovePragmaHandler("STDC", FPContractHandler.get());
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FPContractHandler.reset();
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PP.RemovePragmaHandler("clang", OptimizeHandler.get());
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OptimizeHandler.reset();
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PP.RemovePragmaHandler("clang", LoopHintHandler.get());
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LoopHintHandler.reset();
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}
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/// \brief Handle the annotation token produced for #pragma unused(...)
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///
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/// Each annot_pragma_unused is followed by the argument token so e.g.
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/// "#pragma unused(x,y)" becomes:
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/// annot_pragma_unused 'x' annot_pragma_unused 'y'
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void Parser::HandlePragmaUnused() {
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assert(Tok.is(tok::annot_pragma_unused));
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SourceLocation UnusedLoc = ConsumeToken();
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Actions.ActOnPragmaUnused(Tok, getCurScope(), UnusedLoc);
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ConsumeToken(); // The argument token.
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}
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void Parser::HandlePragmaVisibility() {
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assert(Tok.is(tok::annot_pragma_vis));
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const IdentifierInfo *VisType =
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static_cast<IdentifierInfo *>(Tok.getAnnotationValue());
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SourceLocation VisLoc = ConsumeToken();
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Actions.ActOnPragmaVisibility(VisType, VisLoc);
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}
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struct PragmaPackInfo {
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Sema::PragmaPackKind Kind;
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IdentifierInfo *Name;
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Token Alignment;
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SourceLocation LParenLoc;
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SourceLocation RParenLoc;
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};
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void Parser::HandlePragmaPack() {
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assert(Tok.is(tok::annot_pragma_pack));
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PragmaPackInfo *Info =
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static_cast<PragmaPackInfo *>(Tok.getAnnotationValue());
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SourceLocation PragmaLoc = ConsumeToken();
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ExprResult Alignment;
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if (Info->Alignment.is(tok::numeric_constant)) {
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Alignment = Actions.ActOnNumericConstant(Info->Alignment);
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if (Alignment.isInvalid())
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return;
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}
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Actions.ActOnPragmaPack(Info->Kind, Info->Name, Alignment.get(), PragmaLoc,
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Info->LParenLoc, Info->RParenLoc);
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}
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void Parser::HandlePragmaMSStruct() {
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assert(Tok.is(tok::annot_pragma_msstruct));
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Sema::PragmaMSStructKind Kind =
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static_cast<Sema::PragmaMSStructKind>(
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reinterpret_cast<uintptr_t>(Tok.getAnnotationValue()));
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Actions.ActOnPragmaMSStruct(Kind);
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ConsumeToken(); // The annotation token.
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}
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void Parser::HandlePragmaAlign() {
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assert(Tok.is(tok::annot_pragma_align));
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Sema::PragmaOptionsAlignKind Kind =
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static_cast<Sema::PragmaOptionsAlignKind>(
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reinterpret_cast<uintptr_t>(Tok.getAnnotationValue()));
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SourceLocation PragmaLoc = ConsumeToken();
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Actions.ActOnPragmaOptionsAlign(Kind, PragmaLoc);
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}
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void Parser::HandlePragmaWeak() {
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assert(Tok.is(tok::annot_pragma_weak));
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SourceLocation PragmaLoc = ConsumeToken();
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Actions.ActOnPragmaWeakID(Tok.getIdentifierInfo(), PragmaLoc,
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Tok.getLocation());
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ConsumeToken(); // The weak name.
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}
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void Parser::HandlePragmaWeakAlias() {
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assert(Tok.is(tok::annot_pragma_weakalias));
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SourceLocation PragmaLoc = ConsumeToken();
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IdentifierInfo *WeakName = Tok.getIdentifierInfo();
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SourceLocation WeakNameLoc = Tok.getLocation();
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ConsumeToken();
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IdentifierInfo *AliasName = Tok.getIdentifierInfo();
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SourceLocation AliasNameLoc = Tok.getLocation();
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ConsumeToken();
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Actions.ActOnPragmaWeakAlias(WeakName, AliasName, PragmaLoc,
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WeakNameLoc, AliasNameLoc);
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}
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void Parser::HandlePragmaRedefineExtname() {
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assert(Tok.is(tok::annot_pragma_redefine_extname));
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SourceLocation RedefLoc = ConsumeToken();
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IdentifierInfo *RedefName = Tok.getIdentifierInfo();
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SourceLocation RedefNameLoc = Tok.getLocation();
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ConsumeToken();
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IdentifierInfo *AliasName = Tok.getIdentifierInfo();
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SourceLocation AliasNameLoc = Tok.getLocation();
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ConsumeToken();
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Actions.ActOnPragmaRedefineExtname(RedefName, AliasName, RedefLoc,
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RedefNameLoc, AliasNameLoc);
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}
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void Parser::HandlePragmaFPContract() {
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assert(Tok.is(tok::annot_pragma_fp_contract));
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tok::OnOffSwitch OOS =
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static_cast<tok::OnOffSwitch>(
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reinterpret_cast<uintptr_t>(Tok.getAnnotationValue()));
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Actions.ActOnPragmaFPContract(OOS);
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ConsumeToken(); // The annotation token.
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}
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StmtResult Parser::HandlePragmaCaptured()
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{
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assert(Tok.is(tok::annot_pragma_captured));
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ConsumeToken();
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if (Tok.isNot(tok::l_brace)) {
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PP.Diag(Tok, diag::err_expected) << tok::l_brace;
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return StmtError();
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}
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SourceLocation Loc = Tok.getLocation();
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ParseScope CapturedRegionScope(this, Scope::FnScope | Scope::DeclScope);
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Actions.ActOnCapturedRegionStart(Loc, getCurScope(), CR_Default,
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/*NumParams=*/1);
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StmtResult R = ParseCompoundStatement();
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CapturedRegionScope.Exit();
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if (R.isInvalid()) {
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Actions.ActOnCapturedRegionError();
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return StmtError();
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}
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return Actions.ActOnCapturedRegionEnd(R.get());
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}
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namespace {
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typedef llvm::PointerIntPair<IdentifierInfo *, 1, bool> OpenCLExtData;
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}
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void Parser::HandlePragmaOpenCLExtension() {
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assert(Tok.is(tok::annot_pragma_opencl_extension));
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OpenCLExtData data =
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OpenCLExtData::getFromOpaqueValue(Tok.getAnnotationValue());
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unsigned state = data.getInt();
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IdentifierInfo *ename = data.getPointer();
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SourceLocation NameLoc = Tok.getLocation();
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ConsumeToken(); // The annotation token.
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OpenCLOptions &f = Actions.getOpenCLOptions();
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// OpenCL 1.1 9.1: "The all variant sets the behavior for all extensions,
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// overriding all previously issued extension directives, but only if the
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// behavior is set to disable."
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if (state == 0 && ename->isStr("all")) {
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#define OPENCLEXT(nm) f.nm = 0;
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#include "clang/Basic/OpenCLExtensions.def"
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}
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#define OPENCLEXT(nm) else if (ename->isStr(#nm)) { f.nm = state; }
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#include "clang/Basic/OpenCLExtensions.def"
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else {
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PP.Diag(NameLoc, diag::warn_pragma_unknown_extension) << ename;
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return;
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}
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}
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void Parser::HandlePragmaMSPointersToMembers() {
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assert(Tok.is(tok::annot_pragma_ms_pointers_to_members));
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LangOptions::PragmaMSPointersToMembersKind RepresentationMethod =
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static_cast<LangOptions::PragmaMSPointersToMembersKind>(
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reinterpret_cast<uintptr_t>(Tok.getAnnotationValue()));
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SourceLocation PragmaLoc = ConsumeToken(); // The annotation token.
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Actions.ActOnPragmaMSPointersToMembers(RepresentationMethod, PragmaLoc);
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}
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void Parser::HandlePragmaMSVtorDisp() {
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assert(Tok.is(tok::annot_pragma_ms_vtordisp));
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uintptr_t Value = reinterpret_cast<uintptr_t>(Tok.getAnnotationValue());
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Sema::PragmaVtorDispKind Kind =
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static_cast<Sema::PragmaVtorDispKind>((Value >> 16) & 0xFFFF);
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MSVtorDispAttr::Mode Mode = MSVtorDispAttr::Mode(Value & 0xFFFF);
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SourceLocation PragmaLoc = ConsumeToken(); // The annotation token.
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Actions.ActOnPragmaMSVtorDisp(Kind, PragmaLoc, Mode);
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}
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void Parser::HandlePragmaMSPragma() {
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assert(Tok.is(tok::annot_pragma_ms_pragma));
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// Grab the tokens out of the annotation and enter them into the stream.
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auto TheTokens = (std::pair<Token*, size_t> *)Tok.getAnnotationValue();
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PP.EnterTokenStream(TheTokens->first, TheTokens->second, true, true);
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SourceLocation PragmaLocation = ConsumeToken(); // The annotation token.
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assert(Tok.isAnyIdentifier());
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llvm::StringRef PragmaName = Tok.getIdentifierInfo()->getName();
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PP.Lex(Tok); // pragma kind
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// Figure out which #pragma we're dealing with. The switch has no default
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// because lex shouldn't emit the annotation token for unrecognized pragmas.
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typedef unsigned (Parser::*PragmaHandler)(llvm::StringRef, SourceLocation);
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PragmaHandler Handler = llvm::StringSwitch<PragmaHandler>(PragmaName)
|
|
.Case("data_seg", &Parser::HandlePragmaMSSegment)
|
|
.Case("bss_seg", &Parser::HandlePragmaMSSegment)
|
|
.Case("const_seg", &Parser::HandlePragmaMSSegment)
|
|
.Case("code_seg", &Parser::HandlePragmaMSSegment)
|
|
.Case("section", &Parser::HandlePragmaMSSection)
|
|
.Case("init_seg", &Parser::HandlePragmaMSInitSeg);
|
|
if (auto DiagID = (this->*Handler)(PragmaName, PragmaLocation)) {
|
|
PP.Diag(PragmaLocation, DiagID) << PragmaName;
|
|
while (Tok.isNot(tok::eof))
|
|
PP.Lex(Tok);
|
|
PP.Lex(Tok);
|
|
}
|
|
}
|
|
|
|
unsigned Parser::HandlePragmaMSSection(llvm::StringRef PragmaName,
|
|
SourceLocation PragmaLocation) {
|
|
if (Tok.isNot(tok::l_paren))
|
|
return diag::warn_pragma_expected_lparen;
|
|
PP.Lex(Tok); // (
|
|
// Parsing code for pragma section
|
|
if (Tok.isNot(tok::string_literal))
|
|
return diag::warn_pragma_expected_section_name;
|
|
StringLiteral *SegmentName =
|
|
cast<StringLiteral>(ParseStringLiteralExpression().get());
|
|
int SectionFlags = 0;
|
|
while (Tok.is(tok::comma)) {
|
|
PP.Lex(Tok); // ,
|
|
if (!Tok.isAnyIdentifier())
|
|
return diag::warn_pragma_expected_action_or_r_paren;
|
|
Sema::PragmaSectionFlag Flag =
|
|
llvm::StringSwitch<Sema::PragmaSectionFlag>(
|
|
Tok.getIdentifierInfo()->getName())
|
|
.Case("read", Sema::PSF_Read)
|
|
.Case("write", Sema::PSF_Write)
|
|
.Case("execute", Sema::PSF_Execute)
|
|
.Case("shared", Sema::PSF_Invalid)
|
|
.Case("nopage", Sema::PSF_Invalid)
|
|
.Case("nocache", Sema::PSF_Invalid)
|
|
.Case("discard", Sema::PSF_Invalid)
|
|
.Case("remove", Sema::PSF_Invalid)
|
|
.Default(Sema::PSF_None);
|
|
if (Flag == Sema::PSF_None || Flag == Sema::PSF_Invalid) {
|
|
PP.Diag(PragmaLocation, Flag == Sema::PSF_None ?
|
|
diag::warn_pragma_invalid_specific_action :
|
|
diag::warn_pragma_unsupported_action)
|
|
<< PragmaName << Tok.getIdentifierInfo()->getName();
|
|
while (Tok.isNot(tok::eof))
|
|
PP.Lex(Tok);
|
|
PP.Lex(Tok);
|
|
return 0;
|
|
}
|
|
SectionFlags |= Flag;
|
|
PP.Lex(Tok); // Identifier
|
|
}
|
|
if (Tok.isNot(tok::r_paren))
|
|
return diag::warn_pragma_expected_rparen;
|
|
PP.Lex(Tok); // )
|
|
if (Tok.isNot(tok::eof))
|
|
return diag::warn_pragma_extra_tokens_at_eol;
|
|
PP.Lex(Tok); // eof
|
|
Actions.ActOnPragmaMSSection(PragmaLocation, SectionFlags, SegmentName);
|
|
return 0;
|
|
}
|
|
|
|
unsigned Parser::HandlePragmaMSSegment(llvm::StringRef PragmaName,
|
|
SourceLocation PragmaLocation) {
|
|
if (Tok.isNot(tok::l_paren))
|
|
return diag::warn_pragma_expected_lparen;
|
|
PP.Lex(Tok); // (
|
|
Sema::PragmaMsStackAction Action = Sema::PSK_Reset;
|
|
llvm::StringRef SlotLabel;
|
|
if (Tok.isAnyIdentifier()) {
|
|
llvm::StringRef PushPop = Tok.getIdentifierInfo()->getName();
|
|
if (PushPop == "push")
|
|
Action = Sema::PSK_Push;
|
|
else if (PushPop == "pop")
|
|
Action = Sema::PSK_Pop;
|
|
else
|
|
return diag::warn_pragma_expected_section_push_pop_or_name;
|
|
if (Action != Sema::PSK_Reset) {
|
|
PP.Lex(Tok); // push | pop
|
|
if (Tok.is(tok::comma)) {
|
|
PP.Lex(Tok); // ,
|
|
// If we've got a comma, we either need a label or a string.
|
|
if (Tok.isAnyIdentifier()) {
|
|
SlotLabel = Tok.getIdentifierInfo()->getName();
|
|
PP.Lex(Tok); // identifier
|
|
if (Tok.is(tok::comma))
|
|
PP.Lex(Tok);
|
|
else if (Tok.isNot(tok::r_paren))
|
|
return diag::warn_pragma_expected_punc;
|
|
}
|
|
} else if (Tok.isNot(tok::r_paren))
|
|
return diag::warn_pragma_expected_punc;
|
|
}
|
|
}
|
|
// Grab the string literal for our section name.
|
|
StringLiteral *SegmentName = nullptr;
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
if (Tok.isNot(tok::string_literal))
|
|
return Action != Sema::PSK_Reset ? !SlotLabel.empty() ?
|
|
diag::warn_pragma_expected_section_name :
|
|
diag::warn_pragma_expected_section_label_or_name :
|
|
diag::warn_pragma_expected_section_push_pop_or_name;
|
|
SegmentName = cast<StringLiteral>(ParseStringLiteralExpression().get());
|
|
// Setting section "" has no effect
|
|
if (SegmentName->getLength())
|
|
Action = (Sema::PragmaMsStackAction)(Action | Sema::PSK_Set);
|
|
}
|
|
if (Tok.isNot(tok::r_paren))
|
|
return diag::warn_pragma_expected_rparen;
|
|
PP.Lex(Tok); // )
|
|
if (Tok.isNot(tok::eof))
|
|
return diag::warn_pragma_extra_tokens_at_eol;
|
|
PP.Lex(Tok); // eof
|
|
Actions.ActOnPragmaMSSeg(PragmaLocation, Action, SlotLabel,
|
|
SegmentName, PragmaName);
|
|
return 0;
|
|
}
|
|
|
|
unsigned Parser::HandlePragmaMSInitSeg(llvm::StringRef PragmaName,
|
|
SourceLocation PragmaLocation) {
|
|
return PP.getDiagnostics().getCustomDiagID(
|
|
DiagnosticsEngine::Error, "'#pragma %0' not implemented.");
|
|
}
|
|
|
|
struct PragmaLoopHintInfo {
|
|
Token Loop;
|
|
Token Value;
|
|
Token Option;
|
|
};
|
|
|
|
LoopHint Parser::HandlePragmaLoopHint() {
|
|
assert(Tok.is(tok::annot_pragma_loop_hint));
|
|
PragmaLoopHintInfo *Info =
|
|
static_cast<PragmaLoopHintInfo *>(Tok.getAnnotationValue());
|
|
|
|
LoopHint Hint;
|
|
Hint.LoopLoc =
|
|
IdentifierLoc::create(Actions.Context, Info->Loop.getLocation(),
|
|
Info->Loop.getIdentifierInfo());
|
|
Hint.OptionLoc =
|
|
IdentifierLoc::create(Actions.Context, Info->Option.getLocation(),
|
|
Info->Option.getIdentifierInfo());
|
|
Hint.ValueLoc =
|
|
IdentifierLoc::create(Actions.Context, Info->Value.getLocation(),
|
|
Info->Value.getIdentifierInfo());
|
|
Hint.Range =
|
|
SourceRange(Info->Option.getLocation(), Info->Value.getLocation());
|
|
|
|
// FIXME: We should allow non-type template parameters for the loop hint
|
|
// value. See bug report #19610
|
|
if (Info->Value.is(tok::numeric_constant))
|
|
Hint.ValueExpr = Actions.ActOnNumericConstant(Info->Value).get();
|
|
else
|
|
Hint.ValueExpr = nullptr;
|
|
|
|
return Hint;
|
|
}
|
|
|
|
// #pragma GCC visibility comes in two variants:
|
|
// 'push' '(' [visibility] ')'
|
|
// 'pop'
|
|
void PragmaGCCVisibilityHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &VisTok) {
|
|
SourceLocation VisLoc = VisTok.getLocation();
|
|
|
|
Token Tok;
|
|
PP.LexUnexpandedToken(Tok);
|
|
|
|
const IdentifierInfo *PushPop = Tok.getIdentifierInfo();
|
|
|
|
const IdentifierInfo *VisType;
|
|
if (PushPop && PushPop->isStr("pop")) {
|
|
VisType = nullptr;
|
|
} else if (PushPop && PushPop->isStr("push")) {
|
|
PP.LexUnexpandedToken(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen)
|
|
<< "visibility";
|
|
return;
|
|
}
|
|
PP.LexUnexpandedToken(Tok);
|
|
VisType = Tok.getIdentifierInfo();
|
|
if (!VisType) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< "visibility";
|
|
return;
|
|
}
|
|
PP.LexUnexpandedToken(Tok);
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_rparen)
|
|
<< "visibility";
|
|
return;
|
|
}
|
|
} else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< "visibility";
|
|
return;
|
|
}
|
|
PP.LexUnexpandedToken(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
|
|
<< "visibility";
|
|
return;
|
|
}
|
|
|
|
Token *Toks = new Token[1];
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_vis);
|
|
Toks[0].setLocation(VisLoc);
|
|
Toks[0].setAnnotationValue(
|
|
const_cast<void*>(static_cast<const void*>(VisType)));
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/true);
|
|
}
|
|
|
|
// #pragma pack(...) comes in the following delicious flavors:
|
|
// pack '(' [integer] ')'
|
|
// pack '(' 'show' ')'
|
|
// pack '(' ('push' | 'pop') [',' identifier] [, integer] ')'
|
|
void PragmaPackHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &PackTok) {
|
|
SourceLocation PackLoc = PackTok.getLocation();
|
|
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen) << "pack";
|
|
return;
|
|
}
|
|
|
|
Sema::PragmaPackKind Kind = Sema::PPK_Default;
|
|
IdentifierInfo *Name = nullptr;
|
|
Token Alignment;
|
|
Alignment.startToken();
|
|
SourceLocation LParenLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.is(tok::numeric_constant)) {
|
|
Alignment = Tok;
|
|
|
|
PP.Lex(Tok);
|
|
|
|
// In MSVC/gcc, #pragma pack(4) sets the alignment without affecting
|
|
// the push/pop stack.
|
|
// In Apple gcc, #pragma pack(4) is equivalent to #pragma pack(push, 4)
|
|
if (PP.getLangOpts().ApplePragmaPack)
|
|
Kind = Sema::PPK_Push;
|
|
} else if (Tok.is(tok::identifier)) {
|
|
const IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
if (II->isStr("show")) {
|
|
Kind = Sema::PPK_Show;
|
|
PP.Lex(Tok);
|
|
} else {
|
|
if (II->isStr("push")) {
|
|
Kind = Sema::PPK_Push;
|
|
} else if (II->isStr("pop")) {
|
|
Kind = Sema::PPK_Pop;
|
|
} else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_invalid_action) << "pack";
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.is(tok::comma)) {
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.is(tok::numeric_constant)) {
|
|
Alignment = Tok;
|
|
|
|
PP.Lex(Tok);
|
|
} else if (Tok.is(tok::identifier)) {
|
|
Name = Tok.getIdentifierInfo();
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.is(tok::comma)) {
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.isNot(tok::numeric_constant)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_malformed);
|
|
return;
|
|
}
|
|
|
|
Alignment = Tok;
|
|
|
|
PP.Lex(Tok);
|
|
}
|
|
} else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_pack_malformed);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
} else if (PP.getLangOpts().ApplePragmaPack) {
|
|
// In MSVC/gcc, #pragma pack() resets the alignment without affecting
|
|
// the push/pop stack.
|
|
// In Apple gcc #pragma pack() is equivalent to #pragma pack(pop).
|
|
Kind = Sema::PPK_Pop;
|
|
}
|
|
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_rparen) << "pack";
|
|
return;
|
|
}
|
|
|
|
SourceLocation RParenLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << "pack";
|
|
return;
|
|
}
|
|
|
|
PragmaPackInfo *Info =
|
|
(PragmaPackInfo*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(PragmaPackInfo), llvm::alignOf<PragmaPackInfo>());
|
|
new (Info) PragmaPackInfo();
|
|
Info->Kind = Kind;
|
|
Info->Name = Name;
|
|
Info->Alignment = Alignment;
|
|
Info->LParenLoc = LParenLoc;
|
|
Info->RParenLoc = RParenLoc;
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 1, llvm::alignOf<Token>());
|
|
new (Toks) Token();
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_pack);
|
|
Toks[0].setLocation(PackLoc);
|
|
Toks[0].setAnnotationValue(static_cast<void*>(Info));
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/false);
|
|
}
|
|
|
|
// #pragma ms_struct on
|
|
// #pragma ms_struct off
|
|
void PragmaMSStructHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &MSStructTok) {
|
|
Sema::PragmaMSStructKind Kind = Sema::PMSST_OFF;
|
|
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_ms_struct);
|
|
return;
|
|
}
|
|
const IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
if (II->isStr("on")) {
|
|
Kind = Sema::PMSST_ON;
|
|
PP.Lex(Tok);
|
|
}
|
|
else if (II->isStr("off") || II->isStr("reset"))
|
|
PP.Lex(Tok);
|
|
else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_ms_struct);
|
|
return;
|
|
}
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
|
|
<< "ms_struct";
|
|
return;
|
|
}
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 1, llvm::alignOf<Token>());
|
|
new (Toks) Token();
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_msstruct);
|
|
Toks[0].setLocation(MSStructTok.getLocation());
|
|
Toks[0].setAnnotationValue(reinterpret_cast<void*>(
|
|
static_cast<uintptr_t>(Kind)));
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/false);
|
|
}
|
|
|
|
// #pragma 'align' '=' {'native','natural','mac68k','power','reset'}
|
|
// #pragma 'options 'align' '=' {'native','natural','mac68k','power','reset'}
|
|
static void ParseAlignPragma(Preprocessor &PP, Token &FirstTok,
|
|
bool IsOptions) {
|
|
Token Tok;
|
|
|
|
if (IsOptions) {
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier) ||
|
|
!Tok.getIdentifierInfo()->isStr("align")) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_options_expected_align);
|
|
return;
|
|
}
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::equal)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_align_expected_equal)
|
|
<< IsOptions;
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< (IsOptions ? "options" : "align");
|
|
return;
|
|
}
|
|
|
|
Sema::PragmaOptionsAlignKind Kind = Sema::POAK_Natural;
|
|
const IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
if (II->isStr("native"))
|
|
Kind = Sema::POAK_Native;
|
|
else if (II->isStr("natural"))
|
|
Kind = Sema::POAK_Natural;
|
|
else if (II->isStr("packed"))
|
|
Kind = Sema::POAK_Packed;
|
|
else if (II->isStr("power"))
|
|
Kind = Sema::POAK_Power;
|
|
else if (II->isStr("mac68k"))
|
|
Kind = Sema::POAK_Mac68k;
|
|
else if (II->isStr("reset"))
|
|
Kind = Sema::POAK_Reset;
|
|
else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_align_invalid_option)
|
|
<< IsOptions;
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
|
|
<< (IsOptions ? "options" : "align");
|
|
return;
|
|
}
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 1, llvm::alignOf<Token>());
|
|
new (Toks) Token();
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_align);
|
|
Toks[0].setLocation(FirstTok.getLocation());
|
|
Toks[0].setAnnotationValue(reinterpret_cast<void*>(
|
|
static_cast<uintptr_t>(Kind)));
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/false);
|
|
}
|
|
|
|
void PragmaAlignHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &AlignTok) {
|
|
ParseAlignPragma(PP, AlignTok, /*IsOptions=*/false);
|
|
}
|
|
|
|
void PragmaOptionsHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &OptionsTok) {
|
|
ParseAlignPragma(PP, OptionsTok, /*IsOptions=*/true);
|
|
}
|
|
|
|
// #pragma unused(identifier)
|
|
void PragmaUnusedHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &UnusedTok) {
|
|
// FIXME: Should we be expanding macros here? My guess is no.
|
|
SourceLocation UnusedLoc = UnusedTok.getLocation();
|
|
|
|
// Lex the left '('.
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_lparen) << "unused";
|
|
return;
|
|
}
|
|
|
|
// Lex the declaration reference(s).
|
|
SmallVector<Token, 5> Identifiers;
|
|
SourceLocation RParenLoc;
|
|
bool LexID = true;
|
|
|
|
while (true) {
|
|
PP.Lex(Tok);
|
|
|
|
if (LexID) {
|
|
if (Tok.is(tok::identifier)) {
|
|
Identifiers.push_back(Tok);
|
|
LexID = false;
|
|
continue;
|
|
}
|
|
|
|
// Illegal token!
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_unused_expected_var);
|
|
return;
|
|
}
|
|
|
|
// We are execting a ')' or a ','.
|
|
if (Tok.is(tok::comma)) {
|
|
LexID = true;
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::r_paren)) {
|
|
RParenLoc = Tok.getLocation();
|
|
break;
|
|
}
|
|
|
|
// Illegal token!
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_punc) << "unused";
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) <<
|
|
"unused";
|
|
return;
|
|
}
|
|
|
|
// Verify that we have a location for the right parenthesis.
|
|
assert(RParenLoc.isValid() && "Valid '#pragma unused' must have ')'");
|
|
assert(!Identifiers.empty() && "Valid '#pragma unused' must have arguments");
|
|
|
|
// For each identifier token, insert into the token stream a
|
|
// annot_pragma_unused token followed by the identifier token.
|
|
// This allows us to cache a "#pragma unused" that occurs inside an inline
|
|
// C++ member function.
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 2 * Identifiers.size(), llvm::alignOf<Token>());
|
|
for (unsigned i=0; i != Identifiers.size(); i++) {
|
|
Token &pragmaUnusedTok = Toks[2*i], &idTok = Toks[2*i+1];
|
|
pragmaUnusedTok.startToken();
|
|
pragmaUnusedTok.setKind(tok::annot_pragma_unused);
|
|
pragmaUnusedTok.setLocation(UnusedLoc);
|
|
idTok = Identifiers[i];
|
|
}
|
|
PP.EnterTokenStream(Toks, 2*Identifiers.size(),
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
}
|
|
|
|
// #pragma weak identifier
|
|
// #pragma weak identifier '=' identifier
|
|
void PragmaWeakHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &WeakTok) {
|
|
SourceLocation WeakLoc = WeakTok.getLocation();
|
|
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) << "weak";
|
|
return;
|
|
}
|
|
|
|
Token WeakName = Tok;
|
|
bool HasAlias = false;
|
|
Token AliasName;
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.is(tok::equal)) {
|
|
HasAlias = true;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< "weak";
|
|
return;
|
|
}
|
|
AliasName = Tok;
|
|
PP.Lex(Tok);
|
|
}
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) << "weak";
|
|
return;
|
|
}
|
|
|
|
if (HasAlias) {
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 3, llvm::alignOf<Token>());
|
|
Token &pragmaUnusedTok = Toks[0];
|
|
pragmaUnusedTok.startToken();
|
|
pragmaUnusedTok.setKind(tok::annot_pragma_weakalias);
|
|
pragmaUnusedTok.setLocation(WeakLoc);
|
|
Toks[1] = WeakName;
|
|
Toks[2] = AliasName;
|
|
PP.EnterTokenStream(Toks, 3,
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
} else {
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 2, llvm::alignOf<Token>());
|
|
Token &pragmaUnusedTok = Toks[0];
|
|
pragmaUnusedTok.startToken();
|
|
pragmaUnusedTok.setKind(tok::annot_pragma_weak);
|
|
pragmaUnusedTok.setLocation(WeakLoc);
|
|
Toks[1] = WeakName;
|
|
PP.EnterTokenStream(Toks, 2,
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
}
|
|
}
|
|
|
|
// #pragma redefine_extname identifier identifier
|
|
void PragmaRedefineExtnameHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &RedefToken) {
|
|
SourceLocation RedefLoc = RedefToken.getLocation();
|
|
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) <<
|
|
"redefine_extname";
|
|
return;
|
|
}
|
|
|
|
Token RedefName = Tok;
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< "redefine_extname";
|
|
return;
|
|
}
|
|
|
|
Token AliasName = Tok;
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) <<
|
|
"redefine_extname";
|
|
return;
|
|
}
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 3, llvm::alignOf<Token>());
|
|
Token &pragmaRedefTok = Toks[0];
|
|
pragmaRedefTok.startToken();
|
|
pragmaRedefTok.setKind(tok::annot_pragma_redefine_extname);
|
|
pragmaRedefTok.setLocation(RedefLoc);
|
|
Toks[1] = RedefName;
|
|
Toks[2] = AliasName;
|
|
PP.EnterTokenStream(Toks, 3,
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/false);
|
|
}
|
|
|
|
|
|
void
|
|
PragmaFPContractHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
tok::OnOffSwitch OOS;
|
|
if (PP.LexOnOffSwitch(OOS))
|
|
return;
|
|
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 1, llvm::alignOf<Token>());
|
|
new (Toks) Token();
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_fp_contract);
|
|
Toks[0].setLocation(Tok.getLocation());
|
|
Toks[0].setAnnotationValue(reinterpret_cast<void*>(
|
|
static_cast<uintptr_t>(OOS)));
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/false);
|
|
}
|
|
|
|
void
|
|
PragmaOpenCLExtensionHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
PP.LexUnexpandedToken(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier) <<
|
|
"OPENCL";
|
|
return;
|
|
}
|
|
IdentifierInfo *ename = Tok.getIdentifierInfo();
|
|
SourceLocation NameLoc = Tok.getLocation();
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::colon)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_colon) << ename;
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_enable_disable);
|
|
return;
|
|
}
|
|
IdentifierInfo *op = Tok.getIdentifierInfo();
|
|
|
|
unsigned state;
|
|
if (op->isStr("enable")) {
|
|
state = 1;
|
|
} else if (op->isStr("disable")) {
|
|
state = 0;
|
|
} else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_enable_disable);
|
|
return;
|
|
}
|
|
SourceLocation StateLoc = Tok.getLocation();
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol) <<
|
|
"OPENCL EXTENSION";
|
|
return;
|
|
}
|
|
|
|
OpenCLExtData data(ename, state);
|
|
Token *Toks =
|
|
(Token*) PP.getPreprocessorAllocator().Allocate(
|
|
sizeof(Token) * 1, llvm::alignOf<Token>());
|
|
new (Toks) Token();
|
|
Toks[0].startToken();
|
|
Toks[0].setKind(tok::annot_pragma_opencl_extension);
|
|
Toks[0].setLocation(NameLoc);
|
|
Toks[0].setAnnotationValue(data.getOpaqueValue());
|
|
PP.EnterTokenStream(Toks, 1, /*DisableMacroExpansion=*/true,
|
|
/*OwnsTokens=*/false);
|
|
|
|
if (PP.getPPCallbacks())
|
|
PP.getPPCallbacks()->PragmaOpenCLExtension(NameLoc, ename,
|
|
StateLoc, state);
|
|
}
|
|
|
|
/// \brief Handle '#pragma omp ...' when OpenMP is disabled.
|
|
///
|
|
void
|
|
PragmaNoOpenMPHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &FirstTok) {
|
|
if (!PP.getDiagnostics().isIgnored(diag::warn_pragma_omp_ignored,
|
|
FirstTok.getLocation())) {
|
|
PP.Diag(FirstTok, diag::warn_pragma_omp_ignored);
|
|
PP.getDiagnostics().setSeverity(diag::warn_pragma_omp_ignored,
|
|
diag::Severity::Ignored, SourceLocation());
|
|
}
|
|
PP.DiscardUntilEndOfDirective();
|
|
}
|
|
|
|
/// \brief Handle '#pragma omp ...' when OpenMP is enabled.
|
|
///
|
|
void
|
|
PragmaOpenMPHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &FirstTok) {
|
|
SmallVector<Token, 16> Pragma;
|
|
Token Tok;
|
|
Tok.startToken();
|
|
Tok.setKind(tok::annot_pragma_openmp);
|
|
Tok.setLocation(FirstTok.getLocation());
|
|
|
|
while (Tok.isNot(tok::eod)) {
|
|
Pragma.push_back(Tok);
|
|
PP.Lex(Tok);
|
|
}
|
|
SourceLocation EodLoc = Tok.getLocation();
|
|
Tok.startToken();
|
|
Tok.setKind(tok::annot_pragma_openmp_end);
|
|
Tok.setLocation(EodLoc);
|
|
Pragma.push_back(Tok);
|
|
|
|
Token *Toks = new Token[Pragma.size()];
|
|
std::copy(Pragma.begin(), Pragma.end(), Toks);
|
|
PP.EnterTokenStream(Toks, Pragma.size(),
|
|
/*DisableMacroExpansion=*/true, /*OwnsTokens=*/true);
|
|
}
|
|
|
|
/// \brief Handle '#pragma pointers_to_members'
|
|
// The grammar for this pragma is as follows:
|
|
//
|
|
// <inheritance model> ::= ('single' | 'multiple' | 'virtual') '_inheritance'
|
|
//
|
|
// #pragma pointers_to_members '(' 'best_case' ')'
|
|
// #pragma pointers_to_members '(' 'full_generality' [',' inheritance-model] ')'
|
|
// #pragma pointers_to_members '(' inheritance-model ')'
|
|
void PragmaMSPointersToMembers::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
SourceLocation PointersToMembersLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(PointersToMembersLoc, diag::warn_pragma_expected_lparen)
|
|
<< "pointers_to_members";
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
const IdentifierInfo *Arg = Tok.getIdentifierInfo();
|
|
if (!Arg) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_identifier)
|
|
<< "pointers_to_members";
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
|
|
LangOptions::PragmaMSPointersToMembersKind RepresentationMethod;
|
|
if (Arg->isStr("best_case")) {
|
|
RepresentationMethod = LangOptions::PPTMK_BestCase;
|
|
} else {
|
|
if (Arg->isStr("full_generality")) {
|
|
if (Tok.is(tok::comma)) {
|
|
PP.Lex(Tok);
|
|
|
|
Arg = Tok.getIdentifierInfo();
|
|
if (!Arg) {
|
|
PP.Diag(Tok.getLocation(),
|
|
diag::err_pragma_pointers_to_members_unknown_kind)
|
|
<< Tok.getKind() << /*OnlyInheritanceModels*/ 0;
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
} else if (Tok.is(tok::r_paren)) {
|
|
// #pragma pointers_to_members(full_generality) implicitly specifies
|
|
// virtual_inheritance.
|
|
Arg = nullptr;
|
|
RepresentationMethod = LangOptions::PPTMK_FullGeneralityVirtualInheritance;
|
|
} else {
|
|
PP.Diag(Tok.getLocation(), diag::err_expected_punc)
|
|
<< "full_generality";
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (Arg) {
|
|
if (Arg->isStr("single_inheritance")) {
|
|
RepresentationMethod =
|
|
LangOptions::PPTMK_FullGeneralitySingleInheritance;
|
|
} else if (Arg->isStr("multiple_inheritance")) {
|
|
RepresentationMethod =
|
|
LangOptions::PPTMK_FullGeneralityMultipleInheritance;
|
|
} else if (Arg->isStr("virtual_inheritance")) {
|
|
RepresentationMethod =
|
|
LangOptions::PPTMK_FullGeneralityVirtualInheritance;
|
|
} else {
|
|
PP.Diag(Tok.getLocation(),
|
|
diag::err_pragma_pointers_to_members_unknown_kind)
|
|
<< Arg << /*HasPointerDeclaration*/ 1;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_expected_rparen_after)
|
|
<< (Arg ? Arg->getName() : "full_generality");
|
|
return;
|
|
}
|
|
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
|
|
<< "pointers_to_members";
|
|
return;
|
|
}
|
|
|
|
Token AnnotTok;
|
|
AnnotTok.startToken();
|
|
AnnotTok.setKind(tok::annot_pragma_ms_pointers_to_members);
|
|
AnnotTok.setLocation(PointersToMembersLoc);
|
|
AnnotTok.setAnnotationValue(
|
|
reinterpret_cast<void *>(static_cast<uintptr_t>(RepresentationMethod)));
|
|
PP.EnterToken(AnnotTok);
|
|
}
|
|
|
|
/// \brief Handle '#pragma vtordisp'
|
|
// The grammar for this pragma is as follows:
|
|
//
|
|
// <vtordisp-mode> ::= ('off' | 'on' | '0' | '1' | '2' )
|
|
//
|
|
// #pragma vtordisp '(' ['push' ','] vtordisp-mode ')'
|
|
// #pragma vtordisp '(' 'pop' ')'
|
|
// #pragma vtordisp '(' ')'
|
|
void PragmaMSVtorDisp::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
SourceLocation VtorDispLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(VtorDispLoc, diag::warn_pragma_expected_lparen) << "vtordisp";
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
|
|
Sema::PragmaVtorDispKind Kind = Sema::PVDK_Set;
|
|
const IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
if (II) {
|
|
if (II->isStr("push")) {
|
|
// #pragma vtordisp(push, mode)
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::comma)) {
|
|
PP.Diag(VtorDispLoc, diag::warn_pragma_expected_punc) << "vtordisp";
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
Kind = Sema::PVDK_Push;
|
|
// not push, could be on/off
|
|
} else if (II->isStr("pop")) {
|
|
// #pragma vtordisp(pop)
|
|
PP.Lex(Tok);
|
|
Kind = Sema::PVDK_Pop;
|
|
}
|
|
// not push or pop, could be on/off
|
|
} else {
|
|
if (Tok.is(tok::r_paren)) {
|
|
// #pragma vtordisp()
|
|
Kind = Sema::PVDK_Reset;
|
|
}
|
|
}
|
|
|
|
|
|
uint64_t Value = 0;
|
|
if (Kind == Sema::PVDK_Push || Kind == Sema::PVDK_Set) {
|
|
const IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
if (II && II->isStr("off")) {
|
|
PP.Lex(Tok);
|
|
Value = 0;
|
|
} else if (II && II->isStr("on")) {
|
|
PP.Lex(Tok);
|
|
Value = 1;
|
|
} else if (Tok.is(tok::numeric_constant) &&
|
|
PP.parseSimpleIntegerLiteral(Tok, Value)) {
|
|
if (Value > 2) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_expected_integer)
|
|
<< 0 << 2 << "vtordisp";
|
|
return;
|
|
}
|
|
} else {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_invalid_action)
|
|
<< "vtordisp";
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Finish the pragma: ')' $
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(VtorDispLoc, diag::warn_pragma_expected_rparen) << "vtordisp";
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
|
|
<< "vtordisp";
|
|
return;
|
|
}
|
|
|
|
// Enter the annotation.
|
|
Token AnnotTok;
|
|
AnnotTok.startToken();
|
|
AnnotTok.setKind(tok::annot_pragma_ms_vtordisp);
|
|
AnnotTok.setLocation(VtorDispLoc);
|
|
AnnotTok.setAnnotationValue(reinterpret_cast<void *>(
|
|
static_cast<uintptr_t>((Kind << 16) | (Value & 0xFFFF))));
|
|
PP.EnterToken(AnnotTok);
|
|
}
|
|
|
|
/// \brief Handle all MS pragmas. Simply forwards the tokens after inserting
|
|
/// an annotation token.
|
|
void PragmaMSPragma::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
Token EoF, AnnotTok;
|
|
EoF.startToken();
|
|
EoF.setKind(tok::eof);
|
|
AnnotTok.startToken();
|
|
AnnotTok.setKind(tok::annot_pragma_ms_pragma);
|
|
AnnotTok.setLocation(Tok.getLocation());
|
|
SmallVector<Token, 8> TokenVector;
|
|
// Suck up all of the tokens before the eod.
|
|
for (; Tok.isNot(tok::eod); PP.Lex(Tok))
|
|
TokenVector.push_back(Tok);
|
|
// Add a sentinal EoF token to the end of the list.
|
|
TokenVector.push_back(EoF);
|
|
// We must allocate this array with new because EnterTokenStream is going to
|
|
// delete it later.
|
|
Token *TokenArray = new Token[TokenVector.size()];
|
|
std::copy(TokenVector.begin(), TokenVector.end(), TokenArray);
|
|
auto Value = new (PP.getPreprocessorAllocator())
|
|
std::pair<Token*, size_t>(std::make_pair(TokenArray, TokenVector.size()));
|
|
AnnotTok.setAnnotationValue(Value);
|
|
PP.EnterToken(AnnotTok);
|
|
}
|
|
|
|
/// \brief Handle the Microsoft \#pragma detect_mismatch extension.
|
|
///
|
|
/// The syntax is:
|
|
/// \code
|
|
/// #pragma detect_mismatch("name", "value")
|
|
/// \endcode
|
|
/// Where 'name' and 'value' are quoted strings. The values are embedded in
|
|
/// the object file and passed along to the linker. If the linker detects a
|
|
/// mismatch in the object file's values for the given name, a LNK2038 error
|
|
/// is emitted. See MSDN for more details.
|
|
void PragmaDetectMismatchHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
SourceLocation CommentLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(CommentLoc, diag::err_expected) << tok::l_paren;
|
|
return;
|
|
}
|
|
|
|
// Read the name to embed, which must be a string literal.
|
|
std::string NameString;
|
|
if (!PP.LexStringLiteral(Tok, NameString,
|
|
"pragma detect_mismatch",
|
|
/*MacroExpansion=*/true))
|
|
return;
|
|
|
|
// Read the comma followed by a second string literal.
|
|
std::string ValueString;
|
|
if (Tok.isNot(tok::comma)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_detect_mismatch_malformed);
|
|
return;
|
|
}
|
|
|
|
if (!PP.LexStringLiteral(Tok, ValueString, "pragma detect_mismatch",
|
|
/*MacroExpansion=*/true))
|
|
return;
|
|
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_expected) << tok::r_paren;
|
|
return;
|
|
}
|
|
PP.Lex(Tok); // Eat the r_paren.
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_detect_mismatch_malformed);
|
|
return;
|
|
}
|
|
|
|
// If the pragma is lexically sound, notify any interested PPCallbacks.
|
|
if (PP.getPPCallbacks())
|
|
PP.getPPCallbacks()->PragmaDetectMismatch(CommentLoc, NameString,
|
|
ValueString);
|
|
|
|
Actions.ActOnPragmaDetectMismatch(NameString, ValueString);
|
|
}
|
|
|
|
/// \brief Handle the microsoft \#pragma comment extension.
|
|
///
|
|
/// The syntax is:
|
|
/// \code
|
|
/// #pragma comment(linker, "foo")
|
|
/// \endcode
|
|
/// 'linker' is one of five identifiers: compiler, exestr, lib, linker, user.
|
|
/// "foo" is a string, which is fully macro expanded, and permits string
|
|
/// concatenation, embedded escape characters etc. See MSDN for more details.
|
|
void PragmaCommentHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
SourceLocation CommentLoc = Tok.getLocation();
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(CommentLoc, diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
|
|
// Read the identifier.
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(CommentLoc, diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
|
|
// Verify that this is one of the 5 whitelisted options.
|
|
IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
Sema::PragmaMSCommentKind Kind =
|
|
llvm::StringSwitch<Sema::PragmaMSCommentKind>(II->getName())
|
|
.Case("linker", Sema::PCK_Linker)
|
|
.Case("lib", Sema::PCK_Lib)
|
|
.Case("compiler", Sema::PCK_Compiler)
|
|
.Case("exestr", Sema::PCK_ExeStr)
|
|
.Case("user", Sema::PCK_User)
|
|
.Default(Sema::PCK_Unknown);
|
|
if (Kind == Sema::PCK_Unknown) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_comment_unknown_kind);
|
|
return;
|
|
}
|
|
|
|
// Read the optional string if present.
|
|
PP.Lex(Tok);
|
|
std::string ArgumentString;
|
|
if (Tok.is(tok::comma) && !PP.LexStringLiteral(Tok, ArgumentString,
|
|
"pragma comment",
|
|
/*MacroExpansion=*/true))
|
|
return;
|
|
|
|
// FIXME: warn that 'exestr' is deprecated.
|
|
// FIXME: If the kind is "compiler" warn if the string is present (it is
|
|
// ignored).
|
|
// The MSDN docs say that "lib" and "linker" require a string and have a short
|
|
// whitelist of linker options they support, but in practice MSVC doesn't
|
|
// issue a diagnostic. Therefore neither does clang.
|
|
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
PP.Lex(Tok); // eat the r_paren.
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_comment_malformed);
|
|
return;
|
|
}
|
|
|
|
// If the pragma is lexically sound, notify any interested PPCallbacks.
|
|
if (PP.getPPCallbacks())
|
|
PP.getPPCallbacks()->PragmaComment(CommentLoc, II, ArgumentString);
|
|
|
|
Actions.ActOnPragmaMSComment(Kind, ArgumentString);
|
|
}
|
|
|
|
// #pragma clang optimize off
|
|
// #pragma clang optimize on
|
|
void PragmaOptimizeHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &FirstToken) {
|
|
Token Tok;
|
|
PP.Lex(Tok);
|
|
if (Tok.is(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_optimize_missing_argument);
|
|
return;
|
|
}
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_optimize_invalid_argument)
|
|
<< PP.getSpelling(Tok);
|
|
return;
|
|
}
|
|
const IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
// The only accepted values are 'on' or 'off'.
|
|
bool IsOn = false;
|
|
if (II->isStr("on")) {
|
|
IsOn = true;
|
|
} else if (!II->isStr("off")) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_optimize_invalid_argument)
|
|
<< PP.getSpelling(Tok);
|
|
return;
|
|
}
|
|
PP.Lex(Tok);
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_optimize_extra_argument)
|
|
<< PP.getSpelling(Tok);
|
|
return;
|
|
}
|
|
|
|
Actions.ActOnPragmaOptimize(IsOn, FirstToken.getLocation());
|
|
}
|
|
|
|
/// \brief Handle the \#pragma clang loop directive.
|
|
/// #pragma clang 'loop' loop-hints
|
|
///
|
|
/// loop-hints:
|
|
/// loop-hint loop-hints[opt]
|
|
///
|
|
/// loop-hint:
|
|
/// 'vectorize' '(' loop-hint-keyword ')'
|
|
/// 'interleave' '(' loop-hint-keyword ')'
|
|
/// 'unroll' '(' loop-hint-keyword ')'
|
|
/// 'vectorize_width' '(' loop-hint-value ')'
|
|
/// 'interleave_count' '(' loop-hint-value ')'
|
|
/// 'unroll_count' '(' loop-hint-value ')'
|
|
///
|
|
/// loop-hint-keyword:
|
|
/// 'enable'
|
|
/// 'disable'
|
|
///
|
|
/// loop-hint-value:
|
|
/// constant-expression
|
|
///
|
|
/// Specifying vectorize(enable) or vectorize_width(_value_) instructs llvm to
|
|
/// try vectorizing the instructions of the loop it precedes. Specifying
|
|
/// interleave(enable) or interleave_count(_value_) instructs llvm to try
|
|
/// interleaving multiple iterations of the loop it precedes. The width of the
|
|
/// vector instructions is specified by vectorize_width() and the number of
|
|
/// interleaved loop iterations is specified by interleave_count(). Specifying a
|
|
/// value of 1 effectively disables vectorization/interleaving, even if it is
|
|
/// possible and profitable, and 0 is invalid. The loop vectorizer currently
|
|
/// only works on inner loops.
|
|
///
|
|
/// The unroll and unroll_count directives control the concatenation
|
|
/// unroller. Specifying unroll(enable) instructs llvm to try to
|
|
/// unroll the loop completely, and unroll(disable) disables unrolling
|
|
/// for the loop. Specifying unroll_count(_value_) instructs llvm to
|
|
/// try to unroll the loop the number of times indicated by the value.
|
|
/// If unroll(enable) and unroll_count are both specified only
|
|
/// unroll_count takes effect.
|
|
void PragmaLoopHintHandler::HandlePragma(Preprocessor &PP,
|
|
PragmaIntroducerKind Introducer,
|
|
Token &Tok) {
|
|
Token Loop = Tok;
|
|
SmallVector<Token, 1> TokenList;
|
|
|
|
// Lex the optimization option and verify it is an identifier.
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::identifier)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_loop_invalid_option)
|
|
<< /*MissingOption=*/true << "";
|
|
return;
|
|
}
|
|
|
|
while (Tok.is(tok::identifier)) {
|
|
Token Option = Tok;
|
|
IdentifierInfo *OptionInfo = Tok.getIdentifierInfo();
|
|
|
|
bool OptionValid = llvm::StringSwitch<bool>(OptionInfo->getName())
|
|
.Case("vectorize", true)
|
|
.Case("interleave", true)
|
|
.Case("unroll", true)
|
|
.Case("vectorize_width", true)
|
|
.Case("interleave_count", true)
|
|
.Case("unroll_count", true)
|
|
.Default(false);
|
|
if (!OptionValid) {
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_loop_invalid_option)
|
|
<< /*MissingOption=*/false << OptionInfo;
|
|
return;
|
|
}
|
|
|
|
// Read '('
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_expected) << tok::l_paren;
|
|
return;
|
|
}
|
|
|
|
// FIXME: All tokens between '(' and ')' should be stored and parsed as a
|
|
// constant expression.
|
|
PP.Lex(Tok);
|
|
if (Tok.is(tok::r_paren)) {
|
|
// Nothing between the parentheses.
|
|
PP.Diag(Tok.getLocation(), diag::err_pragma_loop_missing_argument)
|
|
<< OptionInfo;
|
|
return;
|
|
}
|
|
Token Value = Tok;
|
|
|
|
// Read ')'
|
|
PP.Lex(Tok);
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
PP.Diag(Tok.getLocation(), diag::err_expected) << tok::r_paren;
|
|
return;
|
|
}
|
|
|
|
// Get next optimization option.
|
|
PP.Lex(Tok);
|
|
|
|
auto *Info = new (PP.getPreprocessorAllocator()) PragmaLoopHintInfo;
|
|
Info->Loop = Loop;
|
|
Info->Option = Option;
|
|
Info->Value = Value;
|
|
|
|
// Generate the vectorization hint token.
|
|
Token LoopHintTok;
|
|
LoopHintTok.startToken();
|
|
LoopHintTok.setKind(tok::annot_pragma_loop_hint);
|
|
LoopHintTok.setLocation(Loop.getLocation());
|
|
LoopHintTok.setAnnotationValue(static_cast<void *>(Info));
|
|
TokenList.push_back(LoopHintTok);
|
|
}
|
|
|
|
if (Tok.isNot(tok::eod)) {
|
|
PP.Diag(Tok.getLocation(), diag::warn_pragma_extra_tokens_at_eol)
|
|
<< "clang loop";
|
|
return;
|
|
}
|
|
|
|
Token *TokenArray = new Token[TokenList.size()];
|
|
std::copy(TokenList.begin(), TokenList.end(), TokenArray);
|
|
|
|
PP.EnterTokenStream(TokenArray, TokenList.size(),
|
|
/*DisableMacroExpansion=*/false,
|
|
/*OwnsTokens=*/true);
|
|
}
|