d2472d4cdb
This change partly addresses a heinous problem we have with the
parsing of attribute arguments that are a lone identifier. Previously,
we would end up parsing the 'align' attribute of this as an expression
"(Align)":
template<unsigned Size, unsigned Align>
class my_aligned_storage
{
__attribute__((align((Align)))) char storage[Size];
};
while this would parse as a "parameter name" 'Align':
template<unsigned Size, unsigned Align>
class my_aligned_storage
{
__attribute__((align(Align))) char storage[Size];
};
The code that handles the alignment attribute would completely ignore
the parameter name, so the while the first of these would do what's
expected, the second would silently be equivalent to
template<unsigned Size, unsigned Align>
class my_aligned_storage
{
__attribute__((align)) char storage[Size];
};
i.e., use the maximal alignment rather than the specified alignment.
Address this by sniffing the "Args" provided in the TableGen
description of attributes. If the first argument is "obviously"
something that should be treated as an expression (rather than an
identifier to be matched later), parse it as an expression.
Fixes <rdar://problem/13700933>.
llvm-svn: 180973
252 lines
10 KiB
C++
252 lines
10 KiB
C++
//===- TableGen.cpp - Top-Level TableGen implementation for Clang ---------===//
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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 contains the main function for Clang's TableGen.
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//
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//===----------------------------------------------------------------------===//
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#include "TableGenBackends.h" // Declares all backends.
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/TableGen/Error.h"
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#include "llvm/TableGen/Main.h"
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#include "llvm/TableGen/Record.h"
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using namespace llvm;
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using namespace clang;
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enum ActionType {
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GenClangAttrClasses,
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GenClangAttrExprArgsList,
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GenClangAttrImpl,
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GenClangAttrList,
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GenClangAttrPCHRead,
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GenClangAttrPCHWrite,
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GenClangAttrSpellingList,
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GenClangAttrSpellingListIndex,
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GenClangAttrLateParsedList,
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GenClangAttrTemplateInstantiate,
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GenClangAttrParsedAttrList,
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GenClangAttrParsedAttrKinds,
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GenClangAttrDump,
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GenClangDiagsDefs,
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GenClangDiagGroups,
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GenClangDiagsIndexName,
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GenClangCommentNodes,
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GenClangDeclNodes,
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GenClangStmtNodes,
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GenClangSACheckers,
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GenClangCommentHTMLTags,
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GenClangCommentHTMLTagsProperties,
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GenClangCommentHTMLNamedCharacterReferences,
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GenClangCommentCommandInfo,
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GenClangCommentCommandList,
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GenOptParserDefs, GenOptParserImpl,
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GenArmNeon,
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GenArmNeonSema,
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GenArmNeonTest
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};
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namespace {
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cl::opt<ActionType>
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Action(cl::desc("Action to perform:"),
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cl::values(clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
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"Generate option definitions"),
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clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
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"Generate option parser implementation"),
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clEnumValN(GenClangAttrClasses, "gen-clang-attr-classes",
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"Generate clang attribute clases"),
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clEnumValN(GenClangAttrExprArgsList,
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"gen-clang-attr-expr-args-list",
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"Generate a clang attribute expression "
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"arguments list"),
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clEnumValN(GenClangAttrImpl, "gen-clang-attr-impl",
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"Generate clang attribute implementations"),
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clEnumValN(GenClangAttrList, "gen-clang-attr-list",
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"Generate a clang attribute list"),
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clEnumValN(GenClangAttrPCHRead, "gen-clang-attr-pch-read",
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"Generate clang PCH attribute reader"),
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clEnumValN(GenClangAttrPCHWrite, "gen-clang-attr-pch-write",
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"Generate clang PCH attribute writer"),
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clEnumValN(GenClangAttrSpellingList,
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"gen-clang-attr-spelling-list",
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"Generate a clang attribute spelling list"),
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clEnumValN(GenClangAttrSpellingListIndex,
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"gen-clang-attr-spelling-index",
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"Generate a clang attribute spelling index"),
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clEnumValN(GenClangAttrLateParsedList,
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"gen-clang-attr-late-parsed-list",
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"Generate a clang attribute LateParsed list"),
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clEnumValN(GenClangAttrTemplateInstantiate,
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"gen-clang-attr-template-instantiate",
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"Generate a clang template instantiate code"),
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clEnumValN(GenClangAttrParsedAttrList,
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"gen-clang-attr-parsed-attr-list",
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"Generate a clang parsed attribute list"),
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clEnumValN(GenClangAttrParsedAttrKinds,
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"gen-clang-attr-parsed-attr-kinds",
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"Generate a clang parsed attribute kinds"),
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clEnumValN(GenClangAttrDump, "gen-clang-attr-dump",
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"Generate clang attribute dumper"),
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clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
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"Generate Clang diagnostics definitions"),
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clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
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"Generate Clang diagnostic groups"),
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clEnumValN(GenClangDiagsIndexName,
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"gen-clang-diags-index-name",
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"Generate Clang diagnostic name index"),
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clEnumValN(GenClangCommentNodes, "gen-clang-comment-nodes",
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"Generate Clang AST comment nodes"),
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clEnumValN(GenClangDeclNodes, "gen-clang-decl-nodes",
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"Generate Clang AST declaration nodes"),
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clEnumValN(GenClangStmtNodes, "gen-clang-stmt-nodes",
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"Generate Clang AST statement nodes"),
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clEnumValN(GenClangSACheckers, "gen-clang-sa-checkers",
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"Generate Clang Static Analyzer checkers"),
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clEnumValN(GenClangCommentHTMLTags,
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"gen-clang-comment-html-tags",
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"Generate efficient matchers for HTML tag "
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"names that are used in documentation comments"),
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clEnumValN(GenClangCommentHTMLTagsProperties,
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"gen-clang-comment-html-tags-properties",
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"Generate efficient matchers for HTML tag "
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"properties"),
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clEnumValN(GenClangCommentHTMLNamedCharacterReferences,
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"gen-clang-comment-html-named-character-references",
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"Generate function to translate named character "
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"references to UTF-8 sequences"),
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clEnumValN(GenClangCommentCommandInfo,
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"gen-clang-comment-command-info",
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"Generate command properties for commands that "
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"are used in documentation comments"),
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clEnumValN(GenClangCommentCommandList,
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"gen-clang-comment-command-list",
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"Generate list of commands that are used in "
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"documentation comments"),
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clEnumValN(GenArmNeon, "gen-arm-neon",
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"Generate arm_neon.h for clang"),
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clEnumValN(GenArmNeonSema, "gen-arm-neon-sema",
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"Generate ARM NEON sema support for clang"),
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clEnumValN(GenArmNeonTest, "gen-arm-neon-test",
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"Generate ARM NEON tests for clang"),
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clEnumValEnd));
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cl::opt<std::string>
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ClangComponent("clang-component",
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cl::desc("Only use warnings from specified component"),
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cl::value_desc("component"), cl::Hidden);
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bool ClangTableGenMain(raw_ostream &OS, RecordKeeper &Records) {
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switch (Action) {
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case GenClangAttrClasses:
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EmitClangAttrClass(Records, OS);
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break;
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case GenClangAttrExprArgsList:
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EmitClangAttrExprArgsList(Records, OS);
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break;
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case GenClangAttrImpl:
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EmitClangAttrImpl(Records, OS);
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break;
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case GenClangAttrList:
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EmitClangAttrList(Records, OS);
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break;
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case GenClangAttrPCHRead:
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EmitClangAttrPCHRead(Records, OS);
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break;
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case GenClangAttrPCHWrite:
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EmitClangAttrPCHWrite(Records, OS);
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break;
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case GenClangAttrSpellingList:
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EmitClangAttrSpellingList(Records, OS);
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break;
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case GenClangAttrSpellingListIndex:
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EmitClangAttrSpellingListIndex(Records, OS);
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break;
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case GenClangAttrLateParsedList:
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EmitClangAttrLateParsedList(Records, OS);
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break;
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case GenClangAttrTemplateInstantiate:
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EmitClangAttrTemplateInstantiate(Records, OS);
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break;
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case GenClangAttrParsedAttrList:
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EmitClangAttrParsedAttrList(Records, OS);
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break;
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case GenClangAttrParsedAttrKinds:
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EmitClangAttrParsedAttrKinds(Records, OS);
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break;
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case GenClangAttrDump:
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EmitClangAttrDump(Records, OS);
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break;
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case GenClangDiagsDefs:
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EmitClangDiagsDefs(Records, OS, ClangComponent);
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break;
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case GenClangDiagGroups:
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EmitClangDiagGroups(Records, OS);
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break;
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case GenClangDiagsIndexName:
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EmitClangDiagsIndexName(Records, OS);
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break;
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case GenClangCommentNodes:
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EmitClangASTNodes(Records, OS, "Comment", "");
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break;
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case GenClangDeclNodes:
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EmitClangASTNodes(Records, OS, "Decl", "Decl");
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EmitClangDeclContext(Records, OS);
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break;
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case GenClangStmtNodes:
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EmitClangASTNodes(Records, OS, "Stmt", "");
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break;
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case GenClangSACheckers:
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EmitClangSACheckers(Records, OS);
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break;
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case GenClangCommentHTMLTags:
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EmitClangCommentHTMLTags(Records, OS);
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break;
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case GenClangCommentHTMLTagsProperties:
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EmitClangCommentHTMLTagsProperties(Records, OS);
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break;
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case GenClangCommentHTMLNamedCharacterReferences:
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EmitClangCommentHTMLNamedCharacterReferences(Records, OS);
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break;
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case GenClangCommentCommandInfo:
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EmitClangCommentCommandInfo(Records, OS);
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break;
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case GenClangCommentCommandList:
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EmitClangCommentCommandList(Records, OS);
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break;
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case GenOptParserDefs:
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EmitOptParser(Records, OS, true);
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break;
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case GenOptParserImpl:
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EmitOptParser(Records, OS, false);
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break;
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case GenArmNeon:
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EmitNeon(Records, OS);
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break;
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case GenArmNeonSema:
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EmitNeonSema(Records, OS);
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break;
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case GenArmNeonTest:
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EmitNeonTest(Records, OS);
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break;
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}
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return false;
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}
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}
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int main(int argc, char **argv) {
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sys::PrintStackTraceOnErrorSignal();
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PrettyStackTraceProgram X(argc, argv);
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cl::ParseCommandLineOptions(argc, argv);
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return TableGenMain(argv[0], &ClangTableGenMain);
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}
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