mirror of
https://github.com/c64scene-ar/llvm-6502.git
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0d8484f2ed
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61728 91177308-0d34-0410-b5e6-96231b3b80d8
3168 lines
111 KiB
C++
3168 lines
111 KiB
C++
//===-- LLParser.cpp - Parser Class ---------------------------------------===//
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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 defines the parser class for .ll files.
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//
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//===----------------------------------------------------------------------===//
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#include "LLParser.h"
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#include "llvm/AutoUpgrade.h"
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#include "llvm/CallingConv.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/InlineAsm.h"
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#include "llvm/Instructions.h"
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#include "llvm/Module.h"
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#include "llvm/ValueSymbolTable.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace llvm {
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/// ValID - Represents a reference of a definition of some sort with no type.
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/// There are several cases where we have to parse the value but where the
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/// type can depend on later context. This may either be a numeric reference
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/// or a symbolic (%var) reference. This is just a discriminated union.
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struct ValID {
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enum {
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t_LocalID, t_GlobalID, // ID in UIntVal.
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t_LocalName, t_GlobalName, // Name in StrVal.
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t_APSInt, t_APFloat, // Value in APSIntVal/APFloatVal.
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t_Null, t_Undef, t_Zero, // No value.
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t_EmptyArray, // No value: []
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t_Constant, // Value in ConstantVal.
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t_InlineAsm // Value in StrVal/StrVal2/UIntVal.
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} Kind;
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LLParser::LocTy Loc;
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unsigned UIntVal;
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std::string StrVal, StrVal2;
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APSInt APSIntVal;
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APFloat APFloatVal;
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Constant *ConstantVal;
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ValID() : APFloatVal(0.0) {}
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};
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}
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/// Run: module ::= toplevelentity*
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bool LLParser::Run() {
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// Prime the lexer.
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Lex.Lex();
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return ParseTopLevelEntities() ||
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ValidateEndOfModule();
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}
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/// ValidateEndOfModule - Do final validity and sanity checks at the end of the
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/// module.
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bool LLParser::ValidateEndOfModule() {
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if (!ForwardRefTypes.empty())
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return Error(ForwardRefTypes.begin()->second.second,
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"use of undefined type named '" +
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ForwardRefTypes.begin()->first + "'");
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if (!ForwardRefTypeIDs.empty())
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return Error(ForwardRefTypeIDs.begin()->second.second,
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"use of undefined type '%" +
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utostr(ForwardRefTypeIDs.begin()->first) + "'");
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if (!ForwardRefVals.empty())
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return Error(ForwardRefVals.begin()->second.second,
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"use of undefined value '@" + ForwardRefVals.begin()->first +
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"'");
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if (!ForwardRefValIDs.empty())
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return Error(ForwardRefValIDs.begin()->second.second,
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"use of undefined value '@" +
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utostr(ForwardRefValIDs.begin()->first) + "'");
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// Look for intrinsic functions and CallInst that need to be upgraded
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for (Module::iterator FI = M->begin(), FE = M->end(); FI != FE; )
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UpgradeCallsToIntrinsic(FI++); // must be post-increment, as we remove
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return false;
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}
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//===----------------------------------------------------------------------===//
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// Top-Level Entities
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//===----------------------------------------------------------------------===//
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bool LLParser::ParseTopLevelEntities() {
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while (1) {
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switch (Lex.getKind()) {
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default: return TokError("expected top-level entity");
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case lltok::Eof: return false;
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//case lltok::kw_define:
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case lltok::kw_declare: if (ParseDeclare()) return true; break;
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case lltok::kw_define: if (ParseDefine()) return true; break;
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case lltok::kw_module: if (ParseModuleAsm()) return true; break;
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case lltok::kw_target: if (ParseTargetDefinition()) return true; break;
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case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
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case lltok::kw_type: if (ParseUnnamedType()) return true; break;
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case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
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case lltok::LocalVar: if (ParseNamedType()) return true; break;
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case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
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// The Global variable production with no name can have many different
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// optional leading prefixes, the production is:
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// GlobalVar ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
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// OptionalAddrSpace ('constant'|'global') ...
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case lltok::kw_internal: // OptionalLinkage
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case lltok::kw_weak: // OptionalLinkage
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case lltok::kw_linkonce: // OptionalLinkage
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case lltok::kw_appending: // OptionalLinkage
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case lltok::kw_dllexport: // OptionalLinkage
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case lltok::kw_common: // OptionalLinkage
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case lltok::kw_dllimport: // OptionalLinkage
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case lltok::kw_extern_weak: // OptionalLinkage
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case lltok::kw_external: { // OptionalLinkage
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unsigned Linkage, Visibility;
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if (ParseOptionalLinkage(Linkage) ||
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ParseOptionalVisibility(Visibility) ||
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ParseGlobal("", 0, Linkage, true, Visibility))
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return true;
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break;
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}
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case lltok::kw_default: // OptionalVisibility
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case lltok::kw_hidden: // OptionalVisibility
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case lltok::kw_protected: { // OptionalVisibility
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unsigned Visibility;
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if (ParseOptionalVisibility(Visibility) ||
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ParseGlobal("", 0, 0, false, Visibility))
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return true;
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break;
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}
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case lltok::kw_thread_local: // OptionalThreadLocal
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case lltok::kw_addrspace: // OptionalAddrSpace
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case lltok::kw_constant: // GlobalType
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case lltok::kw_global: // GlobalType
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if (ParseGlobal("", 0, 0, false, 0)) return true;
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break;
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}
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}
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}
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/// toplevelentity
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/// ::= 'module' 'asm' STRINGCONSTANT
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bool LLParser::ParseModuleAsm() {
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assert(Lex.getKind() == lltok::kw_module);
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Lex.Lex();
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std::string AsmStr;
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if (ParseToken(lltok::kw_asm, "expected 'module asm'") ||
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ParseStringConstant(AsmStr)) return true;
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const std::string &AsmSoFar = M->getModuleInlineAsm();
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if (AsmSoFar.empty())
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M->setModuleInlineAsm(AsmStr);
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else
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M->setModuleInlineAsm(AsmSoFar+"\n"+AsmStr);
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return false;
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}
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/// toplevelentity
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/// ::= 'target' 'triple' '=' STRINGCONSTANT
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/// ::= 'target' 'datalayout' '=' STRINGCONSTANT
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bool LLParser::ParseTargetDefinition() {
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assert(Lex.getKind() == lltok::kw_target);
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std::string Str;
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switch (Lex.Lex()) {
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default: return TokError("unknown target property");
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case lltok::kw_triple:
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Lex.Lex();
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if (ParseToken(lltok::equal, "expected '=' after target triple") ||
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ParseStringConstant(Str))
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return true;
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M->setTargetTriple(Str);
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return false;
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case lltok::kw_datalayout:
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Lex.Lex();
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if (ParseToken(lltok::equal, "expected '=' after target datalayout") ||
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ParseStringConstant(Str))
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return true;
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M->setDataLayout(Str);
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return false;
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}
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}
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/// toplevelentity
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/// ::= 'deplibs' '=' '[' ']'
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/// ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
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bool LLParser::ParseDepLibs() {
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assert(Lex.getKind() == lltok::kw_deplibs);
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Lex.Lex();
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if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
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ParseToken(lltok::lsquare, "expected '=' after deplibs"))
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return true;
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if (EatIfPresent(lltok::rsquare))
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return false;
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std::string Str;
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if (ParseStringConstant(Str)) return true;
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M->addLibrary(Str);
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while (EatIfPresent(lltok::comma)) {
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if (ParseStringConstant(Str)) return true;
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M->addLibrary(Str);
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}
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return ParseToken(lltok::rsquare, "expected ']' at end of list");
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}
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/// toplevelentity
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/// ::= 'type' type
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bool LLParser::ParseUnnamedType() {
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assert(Lex.getKind() == lltok::kw_type);
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LocTy TypeLoc = Lex.getLoc();
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Lex.Lex(); // eat kw_type
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PATypeHolder Ty(Type::VoidTy);
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if (ParseType(Ty)) return true;
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unsigned TypeID = NumberedTypes.size();
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// We don't allow assigning names to void type
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if (Ty == Type::VoidTy)
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return Error(TypeLoc, "can't assign name to the void type");
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// See if this type was previously referenced.
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std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
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FI = ForwardRefTypeIDs.find(TypeID);
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if (FI != ForwardRefTypeIDs.end()) {
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if (FI->second.first.get() == Ty)
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return Error(TypeLoc, "self referential type is invalid");
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cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
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Ty = FI->second.first.get();
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ForwardRefTypeIDs.erase(FI);
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}
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NumberedTypes.push_back(Ty);
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return false;
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}
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/// toplevelentity
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/// ::= LocalVar '=' 'type' type
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bool LLParser::ParseNamedType() {
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std::string Name = Lex.getStrVal();
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LocTy NameLoc = Lex.getLoc();
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Lex.Lex(); // eat LocalVar.
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PATypeHolder Ty(Type::VoidTy);
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if (ParseToken(lltok::equal, "expected '=' after name") ||
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ParseToken(lltok::kw_type, "expected 'type' after name") ||
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ParseType(Ty))
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return true;
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// We don't allow assigning names to void type
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if (Ty == Type::VoidTy)
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return Error(NameLoc, "can't assign name '" + Name + "' to the void type");
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// Set the type name, checking for conflicts as we do so.
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bool AlreadyExists = M->addTypeName(Name, Ty);
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if (!AlreadyExists) return false;
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// See if this type is a forward reference. We need to eagerly resolve
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// types to allow recursive type redefinitions below.
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std::map<std::string, std::pair<PATypeHolder, LocTy> >::iterator
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FI = ForwardRefTypes.find(Name);
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if (FI != ForwardRefTypes.end()) {
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if (FI->second.first.get() == Ty)
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return Error(NameLoc, "self referential type is invalid");
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cast<DerivedType>(FI->second.first.get())->refineAbstractTypeTo(Ty);
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Ty = FI->second.first.get();
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ForwardRefTypes.erase(FI);
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}
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// Inserting a name that is already defined, get the existing name.
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const Type *Existing = M->getTypeByName(Name);
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assert(Existing && "Conflict but no matching type?!");
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// Otherwise, this is an attempt to redefine a type. That's okay if
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// the redefinition is identical to the original.
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// FIXME: REMOVE REDEFINITIONS IN LLVM 3.0
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if (Existing == Ty) return false;
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// Any other kind of (non-equivalent) redefinition is an error.
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return Error(NameLoc, "redefinition of type named '" + Name + "' of type '" +
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Ty->getDescription() + "'");
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}
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/// toplevelentity
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/// ::= 'declare' FunctionHeader
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bool LLParser::ParseDeclare() {
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assert(Lex.getKind() == lltok::kw_declare);
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Lex.Lex();
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Function *F;
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return ParseFunctionHeader(F, false);
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}
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/// toplevelentity
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/// ::= 'define' FunctionHeader '{' ...
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bool LLParser::ParseDefine() {
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assert(Lex.getKind() == lltok::kw_define);
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Lex.Lex();
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Function *F;
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return ParseFunctionHeader(F, true) ||
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ParseFunctionBody(*F);
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}
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/// ParseGlobalType
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/// ::= 'constant'
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/// ::= 'global'
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bool LLParser::ParseGlobalType(bool &IsConstant) {
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if (Lex.getKind() == lltok::kw_constant)
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IsConstant = true;
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else if (Lex.getKind() == lltok::kw_global)
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IsConstant = false;
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else
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return TokError("expected 'global' or 'constant'");
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Lex.Lex();
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return false;
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}
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/// ParseNamedGlobal:
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/// GlobalVar '=' OptionalVisibility ALIAS ...
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/// GlobalVar '=' OptionalLinkage OptionalVisibility ... -> global variable
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bool LLParser::ParseNamedGlobal() {
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assert(Lex.getKind() == lltok::GlobalVar);
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LocTy NameLoc = Lex.getLoc();
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std::string Name = Lex.getStrVal();
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Lex.Lex();
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bool HasLinkage;
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unsigned Linkage, Visibility;
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if (ParseToken(lltok::equal, "expected '=' in global variable") ||
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ParseOptionalLinkage(Linkage, HasLinkage) ||
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ParseOptionalVisibility(Visibility))
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return true;
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if (HasLinkage || Lex.getKind() != lltok::kw_alias)
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return ParseGlobal(Name, NameLoc, Linkage, HasLinkage, Visibility);
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return ParseAlias(Name, NameLoc, Visibility);
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}
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/// ParseAlias:
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/// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
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/// Aliasee
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/// ::= TypeAndValue | 'bitcast' '(' TypeAndValue 'to' Type ')'
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///
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/// Everything through visibility has already been parsed.
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///
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bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
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unsigned Visibility) {
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assert(Lex.getKind() == lltok::kw_alias);
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Lex.Lex();
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unsigned Linkage;
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LocTy LinkageLoc = Lex.getLoc();
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if (ParseOptionalLinkage(Linkage))
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return true;
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if (Linkage != GlobalValue::ExternalLinkage &&
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Linkage != GlobalValue::WeakLinkage &&
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Linkage != GlobalValue::InternalLinkage)
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return Error(LinkageLoc, "invalid linkage type for alias");
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Constant *Aliasee;
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LocTy AliaseeLoc = Lex.getLoc();
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if (Lex.getKind() != lltok::kw_bitcast) {
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if (ParseGlobalTypeAndValue(Aliasee)) return true;
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} else {
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// The bitcast dest type is not present, it is implied by the dest type.
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ValID ID;
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if (ParseValID(ID)) return true;
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if (ID.Kind != ValID::t_Constant)
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return Error(AliaseeLoc, "invalid aliasee");
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Aliasee = ID.ConstantVal;
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}
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if (!isa<PointerType>(Aliasee->getType()))
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return Error(AliaseeLoc, "alias must have pointer type");
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// Okay, create the alias but do not insert it into the module yet.
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GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
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(GlobalValue::LinkageTypes)Linkage, Name,
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Aliasee);
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GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
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// See if this value already exists in the symbol table. If so, it is either
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// a redefinition or a definition of a forward reference.
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if (GlobalValue *Val =
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cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name))) {
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// See if this was a redefinition. If so, there is no entry in
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// ForwardRefVals.
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std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
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I = ForwardRefVals.find(Name);
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if (I == ForwardRefVals.end())
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return Error(NameLoc, "redefinition of global named '@" + Name + "'");
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// Otherwise, this was a definition of forward ref. Verify that types
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// agree.
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if (Val->getType() != GA->getType())
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return Error(NameLoc,
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"forward reference and definition of alias have different types");
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// If they agree, just RAUW the old value with the alias and remove the
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// forward ref info.
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Val->replaceAllUsesWith(GA);
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Val->eraseFromParent();
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ForwardRefVals.erase(I);
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}
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// Insert into the module, we know its name won't collide now.
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M->getAliasList().push_back(GA);
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assert(GA->getNameStr() == Name && "Should not be a name conflict!");
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return false;
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}
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/// ParseGlobal
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/// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
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/// OptionalAddrSpace GlobalType Type Const
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/// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
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/// OptionalAddrSpace GlobalType Type Const
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///
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/// Everything through visibility has been parsed already.
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///
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bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
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unsigned Linkage, bool HasLinkage,
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unsigned Visibility) {
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unsigned AddrSpace;
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bool ThreadLocal, IsConstant;
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LocTy TyLoc;
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PATypeHolder Ty(Type::VoidTy);
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if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
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ParseOptionalAddrSpace(AddrSpace) ||
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ParseGlobalType(IsConstant) ||
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ParseType(Ty, TyLoc))
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return true;
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// If the linkage is specified and is external, then no initializer is
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// present.
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Constant *Init = 0;
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if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
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Linkage != GlobalValue::ExternalWeakLinkage &&
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Linkage != GlobalValue::ExternalLinkage)) {
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if (ParseGlobalValue(Ty, Init))
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return true;
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}
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if (isa<FunctionType>(Ty) || Ty == Type::LabelTy)
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return Error(TyLoc, "invald type for global variable");
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GlobalVariable *GV = 0;
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// See if the global was forward referenced, if so, use the global.
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if (!Name.empty() && (GV = M->getGlobalVariable(Name, true))) {
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if (!ForwardRefVals.erase(Name))
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return Error(NameLoc, "redefinition of global '@" + Name + "'");
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} else {
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std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
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I = ForwardRefValIDs.find(NumberedVals.size());
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if (I != ForwardRefValIDs.end()) {
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GV = cast<GlobalVariable>(I->second.first);
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ForwardRefValIDs.erase(I);
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}
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}
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if (GV == 0) {
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GV = new GlobalVariable(Ty, false, GlobalValue::ExternalLinkage, 0, Name,
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M, false, AddrSpace);
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} else {
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if (GV->getType()->getElementType() != Ty)
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return Error(TyLoc,
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"forward reference and definition of global have different types");
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|
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// Move the forward-reference to the correct spot in the module.
|
|
M->getGlobalList().splice(M->global_end(), M->getGlobalList(), GV);
|
|
}
|
|
|
|
if (Name.empty())
|
|
NumberedVals.push_back(GV);
|
|
|
|
// Set the parsed properties on the global.
|
|
if (Init)
|
|
GV->setInitializer(Init);
|
|
GV->setConstant(IsConstant);
|
|
GV->setLinkage((GlobalValue::LinkageTypes)Linkage);
|
|
GV->setVisibility((GlobalValue::VisibilityTypes)Visibility);
|
|
GV->setThreadLocal(ThreadLocal);
|
|
|
|
// Parse attributes on the global.
|
|
while (Lex.getKind() == lltok::comma) {
|
|
Lex.Lex();
|
|
|
|
if (Lex.getKind() == lltok::kw_section) {
|
|
Lex.Lex();
|
|
GV->setSection(Lex.getStrVal());
|
|
if (ParseToken(lltok::StringConstant, "expected global section string"))
|
|
return true;
|
|
} else if (Lex.getKind() == lltok::kw_align) {
|
|
unsigned Alignment;
|
|
if (ParseOptionalAlignment(Alignment)) return true;
|
|
GV->setAlignment(Alignment);
|
|
} else {
|
|
TokError("unknown global variable property!");
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// GlobalValue Reference/Resolution Routines.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// GetGlobalVal - Get a value with the specified name or ID, creating a
|
|
/// forward reference record if needed. This can return null if the value
|
|
/// exists but does not have the right type.
|
|
GlobalValue *LLParser::GetGlobalVal(const std::string &Name, const Type *Ty,
|
|
LocTy Loc) {
|
|
const PointerType *PTy = dyn_cast<PointerType>(Ty);
|
|
if (PTy == 0) {
|
|
Error(Loc, "global variable reference must have pointer type");
|
|
return 0;
|
|
}
|
|
|
|
// Look this name up in the normal function symbol table.
|
|
GlobalValue *Val =
|
|
cast_or_null<GlobalValue>(M->getValueSymbolTable().lookup(Name));
|
|
|
|
// If this is a forward reference for the value, see if we already created a
|
|
// forward ref record.
|
|
if (Val == 0) {
|
|
std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
|
|
I = ForwardRefVals.find(Name);
|
|
if (I != ForwardRefVals.end())
|
|
Val = I->second.first;
|
|
}
|
|
|
|
// If we have the value in the symbol table or fwd-ref table, return it.
|
|
if (Val) {
|
|
if (Val->getType() == Ty) return Val;
|
|
Error(Loc, "'@" + Name + "' defined with type '" +
|
|
Val->getType()->getDescription() + "'");
|
|
return 0;
|
|
}
|
|
|
|
// Otherwise, create a new forward reference for this value and remember it.
|
|
GlobalValue *FwdVal;
|
|
if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType()))
|
|
FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, Name, M);
|
|
else
|
|
FwdVal = new GlobalVariable(PTy->getElementType(), false,
|
|
GlobalValue::ExternalWeakLinkage, 0, Name, M);
|
|
|
|
ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
|
|
return FwdVal;
|
|
}
|
|
|
|
GlobalValue *LLParser::GetGlobalVal(unsigned ID, const Type *Ty, LocTy Loc) {
|
|
const PointerType *PTy = dyn_cast<PointerType>(Ty);
|
|
if (PTy == 0) {
|
|
Error(Loc, "global variable reference must have pointer type");
|
|
return 0;
|
|
}
|
|
|
|
GlobalValue *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
|
|
|
|
// If this is a forward reference for the value, see if we already created a
|
|
// forward ref record.
|
|
if (Val == 0) {
|
|
std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
|
|
I = ForwardRefValIDs.find(ID);
|
|
if (I != ForwardRefValIDs.end())
|
|
Val = I->second.first;
|
|
}
|
|
|
|
// If we have the value in the symbol table or fwd-ref table, return it.
|
|
if (Val) {
|
|
if (Val->getType() == Ty) return Val;
|
|
Error(Loc, "'@" + utostr(ID) + "' defined with type '" +
|
|
Val->getType()->getDescription() + "'");
|
|
return 0;
|
|
}
|
|
|
|
// Otherwise, create a new forward reference for this value and remember it.
|
|
GlobalValue *FwdVal;
|
|
if (const FunctionType *FT = dyn_cast<FunctionType>(PTy->getElementType())) {
|
|
// Function types can return opaque but functions can't.
|
|
if (isa<OpaqueType>(FT->getReturnType())) {
|
|
Error(Loc, "function may not return opaque type");
|
|
return 0;
|
|
}
|
|
FwdVal = Function::Create(FT, GlobalValue::ExternalWeakLinkage, "", M);
|
|
} else {
|
|
FwdVal = new GlobalVariable(PTy->getElementType(), false,
|
|
GlobalValue::ExternalWeakLinkage, 0, "", M);
|
|
}
|
|
|
|
ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
|
|
return FwdVal;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Helper Routines.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseToken - If the current token has the specified kind, eat it and return
|
|
/// success. Otherwise, emit the specified error and return failure.
|
|
bool LLParser::ParseToken(lltok::Kind T, const char *ErrMsg) {
|
|
if (Lex.getKind() != T)
|
|
return TokError(ErrMsg);
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// ParseStringConstant
|
|
/// ::= StringConstant
|
|
bool LLParser::ParseStringConstant(std::string &Result) {
|
|
if (Lex.getKind() != lltok::StringConstant)
|
|
return TokError("expected string constant");
|
|
Result = Lex.getStrVal();
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// ParseUInt32
|
|
/// ::= uint32
|
|
bool LLParser::ParseUInt32(unsigned &Val) {
|
|
if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned())
|
|
return TokError("expected integer");
|
|
uint64_t Val64 = Lex.getAPSIntVal().getLimitedValue(0xFFFFFFFFULL+1);
|
|
if (Val64 != unsigned(Val64))
|
|
return TokError("expected 32-bit integer (too large)");
|
|
Val = Val64;
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
|
|
/// ParseOptionalAddrSpace
|
|
/// := /*empty*/
|
|
/// := 'addrspace' '(' uint32 ')'
|
|
bool LLParser::ParseOptionalAddrSpace(unsigned &AddrSpace) {
|
|
AddrSpace = 0;
|
|
if (!EatIfPresent(lltok::kw_addrspace))
|
|
return false;
|
|
return ParseToken(lltok::lparen, "expected '(' in address space") ||
|
|
ParseUInt32(AddrSpace) ||
|
|
ParseToken(lltok::rparen, "expected ')' in address space");
|
|
}
|
|
|
|
/// ParseOptionalAttrs - Parse a potentially empty attribute list. AttrKind
|
|
/// indicates what kind of attribute list this is: 0: function arg, 1: result,
|
|
/// 2: function attr.
|
|
bool LLParser::ParseOptionalAttrs(unsigned &Attrs, unsigned AttrKind) {
|
|
Attrs = Attribute::None;
|
|
LocTy AttrLoc = Lex.getLoc();
|
|
|
|
while (1) {
|
|
switch (Lex.getKind()) {
|
|
case lltok::kw_sext:
|
|
case lltok::kw_zext:
|
|
// Treat these as signext/zeroext unless they are function attrs.
|
|
// FIXME: REMOVE THIS IN LLVM 3.0
|
|
if (AttrKind != 2) {
|
|
if (Lex.getKind() == lltok::kw_sext)
|
|
Attrs |= Attribute::SExt;
|
|
else
|
|
Attrs |= Attribute::ZExt;
|
|
break;
|
|
}
|
|
// FALL THROUGH.
|
|
default: // End of attributes.
|
|
if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
|
|
return Error(AttrLoc, "invalid use of function-only attribute");
|
|
|
|
if (AttrKind != 0 && (Attrs & Attribute::ParameterOnly))
|
|
return Error(AttrLoc, "invalid use of parameter-only attribute");
|
|
|
|
return false;
|
|
case lltok::kw_zeroext: Attrs |= Attribute::ZExt; break;
|
|
case lltok::kw_signext: Attrs |= Attribute::SExt; break;
|
|
case lltok::kw_inreg: Attrs |= Attribute::InReg; break;
|
|
case lltok::kw_sret: Attrs |= Attribute::StructRet; break;
|
|
case lltok::kw_noalias: Attrs |= Attribute::NoAlias; break;
|
|
case lltok::kw_nocapture: Attrs |= Attribute::NoCapture; break;
|
|
case lltok::kw_byval: Attrs |= Attribute::ByVal; break;
|
|
case lltok::kw_nest: Attrs |= Attribute::Nest; break;
|
|
|
|
case lltok::kw_noreturn: Attrs |= Attribute::NoReturn; break;
|
|
case lltok::kw_nounwind: Attrs |= Attribute::NoUnwind; break;
|
|
case lltok::kw_noinline: Attrs |= Attribute::NoInline; break;
|
|
case lltok::kw_readnone: Attrs |= Attribute::ReadNone; break;
|
|
case lltok::kw_readonly: Attrs |= Attribute::ReadOnly; break;
|
|
case lltok::kw_alwaysinline: Attrs |= Attribute::AlwaysInline; break;
|
|
case lltok::kw_optsize: Attrs |= Attribute::OptimizeForSize; break;
|
|
case lltok::kw_ssp: Attrs |= Attribute::StackProtect; break;
|
|
case lltok::kw_sspreq: Attrs |= Attribute::StackProtectReq; break;
|
|
|
|
|
|
case lltok::kw_align: {
|
|
unsigned Alignment;
|
|
if (ParseOptionalAlignment(Alignment))
|
|
return true;
|
|
Attrs |= Attribute::constructAlignmentFromInt(Alignment);
|
|
continue;
|
|
}
|
|
}
|
|
Lex.Lex();
|
|
}
|
|
}
|
|
|
|
/// ParseOptionalLinkage
|
|
/// ::= /*empty*/
|
|
/// ::= 'internal'
|
|
/// ::= 'weak'
|
|
/// ::= 'linkonce'
|
|
/// ::= 'appending'
|
|
/// ::= 'dllexport'
|
|
/// ::= 'common'
|
|
/// ::= 'dllimport'
|
|
/// ::= 'extern_weak'
|
|
/// ::= 'external'
|
|
bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
|
|
HasLinkage = false;
|
|
switch (Lex.getKind()) {
|
|
default: Res = GlobalValue::ExternalLinkage; return false;
|
|
case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
|
|
case lltok::kw_weak: Res = GlobalValue::WeakLinkage; break;
|
|
case lltok::kw_linkonce: Res = GlobalValue::LinkOnceLinkage; break;
|
|
case lltok::kw_appending: Res = GlobalValue::AppendingLinkage; break;
|
|
case lltok::kw_dllexport: Res = GlobalValue::DLLExportLinkage; break;
|
|
case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
|
|
case lltok::kw_dllimport: Res = GlobalValue::DLLImportLinkage; break;
|
|
case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
|
|
case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
|
|
}
|
|
Lex.Lex();
|
|
HasLinkage = true;
|
|
return false;
|
|
}
|
|
|
|
/// ParseOptionalVisibility
|
|
/// ::= /*empty*/
|
|
/// ::= 'default'
|
|
/// ::= 'hidden'
|
|
/// ::= 'protected'
|
|
///
|
|
bool LLParser::ParseOptionalVisibility(unsigned &Res) {
|
|
switch (Lex.getKind()) {
|
|
default: Res = GlobalValue::DefaultVisibility; return false;
|
|
case lltok::kw_default: Res = GlobalValue::DefaultVisibility; break;
|
|
case lltok::kw_hidden: Res = GlobalValue::HiddenVisibility; break;
|
|
case lltok::kw_protected: Res = GlobalValue::ProtectedVisibility; break;
|
|
}
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// ParseOptionalCallingConv
|
|
/// ::= /*empty*/
|
|
/// ::= 'ccc'
|
|
/// ::= 'fastcc'
|
|
/// ::= 'coldcc'
|
|
/// ::= 'x86_stdcallcc'
|
|
/// ::= 'x86_fastcallcc'
|
|
/// ::= 'cc' UINT
|
|
///
|
|
bool LLParser::ParseOptionalCallingConv(unsigned &CC) {
|
|
switch (Lex.getKind()) {
|
|
default: CC = CallingConv::C; return false;
|
|
case lltok::kw_ccc: CC = CallingConv::C; break;
|
|
case lltok::kw_fastcc: CC = CallingConv::Fast; break;
|
|
case lltok::kw_coldcc: CC = CallingConv::Cold; break;
|
|
case lltok::kw_x86_stdcallcc: CC = CallingConv::X86_StdCall; break;
|
|
case lltok::kw_x86_fastcallcc: CC = CallingConv::X86_FastCall; break;
|
|
case lltok::kw_cc: Lex.Lex(); return ParseUInt32(CC);
|
|
}
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// ParseOptionalAlignment
|
|
/// ::= /* empty */
|
|
/// ::= 'align' 4
|
|
bool LLParser::ParseOptionalAlignment(unsigned &Alignment) {
|
|
Alignment = 0;
|
|
if (!EatIfPresent(lltok::kw_align))
|
|
return false;
|
|
LocTy AlignLoc = Lex.getLoc();
|
|
if (ParseUInt32(Alignment)) return true;
|
|
if (!isPowerOf2_32(Alignment))
|
|
return Error(AlignLoc, "alignment is not a power of two");
|
|
return false;
|
|
}
|
|
|
|
/// ParseOptionalCommaAlignment
|
|
/// ::= /* empty */
|
|
/// ::= ',' 'align' 4
|
|
bool LLParser::ParseOptionalCommaAlignment(unsigned &Alignment) {
|
|
Alignment = 0;
|
|
if (!EatIfPresent(lltok::comma))
|
|
return false;
|
|
return ParseToken(lltok::kw_align, "expected 'align'") ||
|
|
ParseUInt32(Alignment);
|
|
}
|
|
|
|
/// ParseIndexList
|
|
/// ::= (',' uint32)+
|
|
bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices) {
|
|
if (Lex.getKind() != lltok::comma)
|
|
return TokError("expected ',' as start of index list");
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
unsigned Idx;
|
|
if (ParseUInt32(Idx)) return true;
|
|
Indices.push_back(Idx);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Type Parsing.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseType - Parse and resolve a full type.
|
|
bool LLParser::ParseType(PATypeHolder &Result) {
|
|
if (ParseTypeRec(Result)) return true;
|
|
|
|
// Verify no unresolved uprefs.
|
|
if (!UpRefs.empty())
|
|
return Error(UpRefs.back().Loc, "invalid unresolved type up reference");
|
|
|
|
return false;
|
|
}
|
|
|
|
/// HandleUpRefs - Every time we finish a new layer of types, this function is
|
|
/// called. It loops through the UpRefs vector, which is a list of the
|
|
/// currently active types. For each type, if the up-reference is contained in
|
|
/// the newly completed type, we decrement the level count. When the level
|
|
/// count reaches zero, the up-referenced type is the type that is passed in:
|
|
/// thus we can complete the cycle.
|
|
///
|
|
PATypeHolder LLParser::HandleUpRefs(const Type *ty) {
|
|
// If Ty isn't abstract, or if there are no up-references in it, then there is
|
|
// nothing to resolve here.
|
|
if (!ty->isAbstract() || UpRefs.empty()) return ty;
|
|
|
|
PATypeHolder Ty(ty);
|
|
#if 0
|
|
errs() << "Type '" << Ty->getDescription()
|
|
<< "' newly formed. Resolving upreferences.\n"
|
|
<< UpRefs.size() << " upreferences active!\n";
|
|
#endif
|
|
|
|
// If we find any resolvable upreferences (i.e., those whose NestingLevel goes
|
|
// to zero), we resolve them all together before we resolve them to Ty. At
|
|
// the end of the loop, if there is anything to resolve to Ty, it will be in
|
|
// this variable.
|
|
OpaqueType *TypeToResolve = 0;
|
|
|
|
for (unsigned i = 0; i != UpRefs.size(); ++i) {
|
|
// Determine if 'Ty' directly contains this up-references 'LastContainedTy'.
|
|
bool ContainsType =
|
|
std::find(Ty->subtype_begin(), Ty->subtype_end(),
|
|
UpRefs[i].LastContainedTy) != Ty->subtype_end();
|
|
|
|
#if 0
|
|
errs() << " UR#" << i << " - TypeContains(" << Ty->getDescription() << ", "
|
|
<< UpRefs[i].LastContainedTy->getDescription() << ") = "
|
|
<< (ContainsType ? "true" : "false")
|
|
<< " level=" << UpRefs[i].NestingLevel << "\n";
|
|
#endif
|
|
if (!ContainsType)
|
|
continue;
|
|
|
|
// Decrement level of upreference
|
|
unsigned Level = --UpRefs[i].NestingLevel;
|
|
UpRefs[i].LastContainedTy = Ty;
|
|
|
|
// If the Up-reference has a non-zero level, it shouldn't be resolved yet.
|
|
if (Level != 0)
|
|
continue;
|
|
|
|
#if 0
|
|
errs() << " * Resolving upreference for " << UpRefs[i].UpRefTy << "\n";
|
|
#endif
|
|
if (!TypeToResolve)
|
|
TypeToResolve = UpRefs[i].UpRefTy;
|
|
else
|
|
UpRefs[i].UpRefTy->refineAbstractTypeTo(TypeToResolve);
|
|
UpRefs.erase(UpRefs.begin()+i); // Remove from upreference list.
|
|
--i; // Do not skip the next element.
|
|
}
|
|
|
|
if (TypeToResolve)
|
|
TypeToResolve->refineAbstractTypeTo(Ty);
|
|
|
|
return Ty;
|
|
}
|
|
|
|
|
|
/// ParseTypeRec - The recursive function used to process the internal
|
|
/// implementation details of types.
|
|
bool LLParser::ParseTypeRec(PATypeHolder &Result) {
|
|
switch (Lex.getKind()) {
|
|
default:
|
|
return TokError("expected type");
|
|
case lltok::Type:
|
|
// TypeRec ::= 'float' | 'void' (etc)
|
|
Result = Lex.getTyVal();
|
|
Lex.Lex();
|
|
break;
|
|
case lltok::kw_opaque:
|
|
// TypeRec ::= 'opaque'
|
|
Result = OpaqueType::get();
|
|
Lex.Lex();
|
|
break;
|
|
case lltok::lbrace:
|
|
// TypeRec ::= '{' ... '}'
|
|
if (ParseStructType(Result, false))
|
|
return true;
|
|
break;
|
|
case lltok::lsquare:
|
|
// TypeRec ::= '[' ... ']'
|
|
Lex.Lex(); // eat the lsquare.
|
|
if (ParseArrayVectorType(Result, false))
|
|
return true;
|
|
break;
|
|
case lltok::less: // Either vector or packed struct.
|
|
// TypeRec ::= '<' ... '>'
|
|
Lex.Lex();
|
|
if (Lex.getKind() == lltok::lbrace) {
|
|
if (ParseStructType(Result, true) ||
|
|
ParseToken(lltok::greater, "expected '>' at end of packed struct"))
|
|
return true;
|
|
} else if (ParseArrayVectorType(Result, true))
|
|
return true;
|
|
break;
|
|
case lltok::LocalVar:
|
|
case lltok::StringConstant: // FIXME: REMOVE IN LLVM 3.0
|
|
// TypeRec ::= %foo
|
|
if (const Type *T = M->getTypeByName(Lex.getStrVal())) {
|
|
Result = T;
|
|
} else {
|
|
Result = OpaqueType::get();
|
|
ForwardRefTypes.insert(std::make_pair(Lex.getStrVal(),
|
|
std::make_pair(Result,
|
|
Lex.getLoc())));
|
|
M->addTypeName(Lex.getStrVal(), Result.get());
|
|
}
|
|
Lex.Lex();
|
|
break;
|
|
|
|
case lltok::LocalVarID:
|
|
// TypeRec ::= %4
|
|
if (Lex.getUIntVal() < NumberedTypes.size())
|
|
Result = NumberedTypes[Lex.getUIntVal()];
|
|
else {
|
|
std::map<unsigned, std::pair<PATypeHolder, LocTy> >::iterator
|
|
I = ForwardRefTypeIDs.find(Lex.getUIntVal());
|
|
if (I != ForwardRefTypeIDs.end())
|
|
Result = I->second.first;
|
|
else {
|
|
Result = OpaqueType::get();
|
|
ForwardRefTypeIDs.insert(std::make_pair(Lex.getUIntVal(),
|
|
std::make_pair(Result,
|
|
Lex.getLoc())));
|
|
}
|
|
}
|
|
Lex.Lex();
|
|
break;
|
|
case lltok::backslash: {
|
|
// TypeRec ::= '\' 4
|
|
Lex.Lex();
|
|
unsigned Val;
|
|
if (ParseUInt32(Val)) return true;
|
|
OpaqueType *OT = OpaqueType::get(); // Use temporary placeholder.
|
|
UpRefs.push_back(UpRefRecord(Lex.getLoc(), Val, OT));
|
|
Result = OT;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Parse the type suffixes.
|
|
while (1) {
|
|
switch (Lex.getKind()) {
|
|
// End of type.
|
|
default: return false;
|
|
|
|
// TypeRec ::= TypeRec '*'
|
|
case lltok::star:
|
|
if (Result.get() == Type::LabelTy)
|
|
return TokError("basic block pointers are invalid");
|
|
Result = HandleUpRefs(PointerType::getUnqual(Result.get()));
|
|
Lex.Lex();
|
|
break;
|
|
|
|
// TypeRec ::= TypeRec 'addrspace' '(' uint32 ')' '*'
|
|
case lltok::kw_addrspace: {
|
|
if (Result.get() == Type::LabelTy)
|
|
return TokError("basic block pointers are invalid");
|
|
unsigned AddrSpace;
|
|
if (ParseOptionalAddrSpace(AddrSpace) ||
|
|
ParseToken(lltok::star, "expected '*' in address space"))
|
|
return true;
|
|
|
|
Result = HandleUpRefs(PointerType::get(Result.get(), AddrSpace));
|
|
break;
|
|
}
|
|
|
|
/// Types '(' ArgTypeListI ')' OptFuncAttrs
|
|
case lltok::lparen:
|
|
if (ParseFunctionType(Result))
|
|
return true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// ParseParameterList
|
|
/// ::= '(' ')'
|
|
/// ::= '(' Arg (',' Arg)* ')'
|
|
/// Arg
|
|
/// ::= Type OptionalAttributes Value OptionalAttributes
|
|
bool LLParser::ParseParameterList(SmallVectorImpl<ParamInfo> &ArgList,
|
|
PerFunctionState &PFS) {
|
|
if (ParseToken(lltok::lparen, "expected '(' in call"))
|
|
return true;
|
|
|
|
while (Lex.getKind() != lltok::rparen) {
|
|
// If this isn't the first argument, we need a comma.
|
|
if (!ArgList.empty() &&
|
|
ParseToken(lltok::comma, "expected ',' in argument list"))
|
|
return true;
|
|
|
|
// Parse the argument.
|
|
LocTy ArgLoc;
|
|
PATypeHolder ArgTy(Type::VoidTy);
|
|
unsigned ArgAttrs1, ArgAttrs2;
|
|
Value *V;
|
|
if (ParseType(ArgTy, ArgLoc) ||
|
|
ParseOptionalAttrs(ArgAttrs1, 0) ||
|
|
ParseValue(ArgTy, V, PFS) ||
|
|
// FIXME: Should not allow attributes after the argument, remove this in
|
|
// LLVM 3.0.
|
|
ParseOptionalAttrs(ArgAttrs2, 0))
|
|
return true;
|
|
ArgList.push_back(ParamInfo(ArgLoc, V, ArgAttrs1|ArgAttrs2));
|
|
}
|
|
|
|
Lex.Lex(); // Lex the ')'.
|
|
return false;
|
|
}
|
|
|
|
|
|
|
|
/// ParseArgumentList - Parse the argument list for a function type or function
|
|
/// prototype. If 'inType' is true then we are parsing a FunctionType.
|
|
/// ::= '(' ArgTypeListI ')'
|
|
/// ArgTypeListI
|
|
/// ::= /*empty*/
|
|
/// ::= '...'
|
|
/// ::= ArgTypeList ',' '...'
|
|
/// ::= ArgType (',' ArgType)*
|
|
///
|
|
bool LLParser::ParseArgumentList(std::vector<ArgInfo> &ArgList,
|
|
bool &isVarArg, bool inType) {
|
|
isVarArg = false;
|
|
assert(Lex.getKind() == lltok::lparen);
|
|
Lex.Lex(); // eat the (.
|
|
|
|
if (Lex.getKind() == lltok::rparen) {
|
|
// empty
|
|
} else if (Lex.getKind() == lltok::dotdotdot) {
|
|
isVarArg = true;
|
|
Lex.Lex();
|
|
} else {
|
|
LocTy TypeLoc = Lex.getLoc();
|
|
PATypeHolder ArgTy(Type::VoidTy);
|
|
unsigned Attrs;
|
|
std::string Name;
|
|
|
|
// If we're parsing a type, use ParseTypeRec, because we allow recursive
|
|
// types (such as a function returning a pointer to itself). If parsing a
|
|
// function prototype, we require fully resolved types.
|
|
if ((inType ? ParseTypeRec(ArgTy) : ParseType(ArgTy)) ||
|
|
ParseOptionalAttrs(Attrs, 0)) return true;
|
|
|
|
if (Lex.getKind() == lltok::LocalVar ||
|
|
Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
|
|
Name = Lex.getStrVal();
|
|
Lex.Lex();
|
|
}
|
|
|
|
if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
|
|
return Error(TypeLoc, "invalid type for function argument");
|
|
|
|
ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
// Handle ... at end of arg list.
|
|
if (EatIfPresent(lltok::dotdotdot)) {
|
|
isVarArg = true;
|
|
break;
|
|
}
|
|
|
|
// Otherwise must be an argument type.
|
|
TypeLoc = Lex.getLoc();
|
|
if (ParseTypeRec(ArgTy) ||
|
|
ParseOptionalAttrs(Attrs, 0)) return true;
|
|
|
|
if (Lex.getKind() == lltok::LocalVar ||
|
|
Lex.getKind() == lltok::StringConstant) { // FIXME: REMOVE IN LLVM 3.0
|
|
Name = Lex.getStrVal();
|
|
Lex.Lex();
|
|
} else {
|
|
Name = "";
|
|
}
|
|
|
|
if (!ArgTy->isFirstClassType() && !isa<OpaqueType>(ArgTy))
|
|
return Error(TypeLoc, "invalid type for function argument");
|
|
|
|
ArgList.push_back(ArgInfo(TypeLoc, ArgTy, Attrs, Name));
|
|
}
|
|
}
|
|
|
|
return ParseToken(lltok::rparen, "expected ')' at end of argument list");
|
|
}
|
|
|
|
/// ParseFunctionType
|
|
/// ::= Type ArgumentList OptionalAttrs
|
|
bool LLParser::ParseFunctionType(PATypeHolder &Result) {
|
|
assert(Lex.getKind() == lltok::lparen);
|
|
|
|
if (!FunctionType::isValidReturnType(Result))
|
|
return TokError("invalid function return type");
|
|
|
|
std::vector<ArgInfo> ArgList;
|
|
bool isVarArg;
|
|
unsigned Attrs;
|
|
if (ParseArgumentList(ArgList, isVarArg, true) ||
|
|
// FIXME: Allow, but ignore attributes on function types!
|
|
// FIXME: Remove in LLVM 3.0
|
|
ParseOptionalAttrs(Attrs, 2))
|
|
return true;
|
|
|
|
// Reject names on the arguments lists.
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
|
|
if (!ArgList[i].Name.empty())
|
|
return Error(ArgList[i].Loc, "argument name invalid in function type");
|
|
if (!ArgList[i].Attrs != 0) {
|
|
// Allow but ignore attributes on function types; this permits
|
|
// auto-upgrade.
|
|
// FIXME: REJECT ATTRIBUTES ON FUNCTION TYPES in LLVM 3.0
|
|
}
|
|
}
|
|
|
|
std::vector<const Type*> ArgListTy;
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
|
|
ArgListTy.push_back(ArgList[i].Type);
|
|
|
|
Result = HandleUpRefs(FunctionType::get(Result.get(), ArgListTy, isVarArg));
|
|
return false;
|
|
}
|
|
|
|
/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
|
|
/// TypeRec
|
|
/// ::= '{' '}'
|
|
/// ::= '{' TypeRec (',' TypeRec)* '}'
|
|
/// ::= '<' '{' '}' '>'
|
|
/// ::= '<' '{' TypeRec (',' TypeRec)* '}' '>'
|
|
bool LLParser::ParseStructType(PATypeHolder &Result, bool Packed) {
|
|
assert(Lex.getKind() == lltok::lbrace);
|
|
Lex.Lex(); // Consume the '{'
|
|
|
|
if (EatIfPresent(lltok::rbrace)) {
|
|
Result = StructType::get(std::vector<const Type*>(), Packed);
|
|
return false;
|
|
}
|
|
|
|
std::vector<PATypeHolder> ParamsList;
|
|
if (ParseTypeRec(Result)) return true;
|
|
ParamsList.push_back(Result);
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
if (ParseTypeRec(Result)) return true;
|
|
ParamsList.push_back(Result);
|
|
}
|
|
|
|
if (ParseToken(lltok::rbrace, "expected '}' at end of struct"))
|
|
return true;
|
|
|
|
std::vector<const Type*> ParamsListTy;
|
|
for (unsigned i = 0, e = ParamsList.size(); i != e; ++i)
|
|
ParamsListTy.push_back(ParamsList[i].get());
|
|
Result = HandleUpRefs(StructType::get(ParamsListTy, Packed));
|
|
return false;
|
|
}
|
|
|
|
/// ParseArrayVectorType - Parse an array or vector type, assuming the first
|
|
/// token has already been consumed.
|
|
/// TypeRec
|
|
/// ::= '[' APSINTVAL 'x' Types ']'
|
|
/// ::= '<' APSINTVAL 'x' Types '>'
|
|
bool LLParser::ParseArrayVectorType(PATypeHolder &Result, bool isVector) {
|
|
if (Lex.getKind() != lltok::APSInt || Lex.getAPSIntVal().isSigned() ||
|
|
Lex.getAPSIntVal().getBitWidth() > 64)
|
|
return TokError("expected number in address space");
|
|
|
|
LocTy SizeLoc = Lex.getLoc();
|
|
uint64_t Size = Lex.getAPSIntVal().getZExtValue();
|
|
Lex.Lex();
|
|
|
|
if (ParseToken(lltok::kw_x, "expected 'x' after element count"))
|
|
return true;
|
|
|
|
LocTy TypeLoc = Lex.getLoc();
|
|
PATypeHolder EltTy(Type::VoidTy);
|
|
if (ParseTypeRec(EltTy)) return true;
|
|
|
|
if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
|
|
"expected end of sequential type"))
|
|
return true;
|
|
|
|
if (isVector) {
|
|
if ((unsigned)Size != Size)
|
|
return Error(SizeLoc, "size too large for vector");
|
|
if (!EltTy->isFloatingPoint() && !EltTy->isInteger())
|
|
return Error(TypeLoc, "vector element type must be fp or integer");
|
|
Result = VectorType::get(EltTy, unsigned(Size));
|
|
} else {
|
|
if (!EltTy->isFirstClassType() && !isa<OpaqueType>(EltTy))
|
|
return Error(TypeLoc, "invalid array element type");
|
|
Result = HandleUpRefs(ArrayType::get(EltTy, Size));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Function Semantic Analysis.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f)
|
|
: P(p), F(f) {
|
|
|
|
// Insert unnamed arguments into the NumberedVals list.
|
|
for (Function::arg_iterator AI = F.arg_begin(), E = F.arg_end();
|
|
AI != E; ++AI)
|
|
if (!AI->hasName())
|
|
NumberedVals.push_back(AI);
|
|
}
|
|
|
|
LLParser::PerFunctionState::~PerFunctionState() {
|
|
// If there were any forward referenced non-basicblock values, delete them.
|
|
for (std::map<std::string, std::pair<Value*, LocTy> >::iterator
|
|
I = ForwardRefVals.begin(), E = ForwardRefVals.end(); I != E; ++I)
|
|
if (!isa<BasicBlock>(I->second.first)) {
|
|
I->second.first->replaceAllUsesWith(UndefValue::get(I->second.first
|
|
->getType()));
|
|
delete I->second.first;
|
|
I->second.first = 0;
|
|
}
|
|
|
|
for (std::map<unsigned, std::pair<Value*, LocTy> >::iterator
|
|
I = ForwardRefValIDs.begin(), E = ForwardRefValIDs.end(); I != E; ++I)
|
|
if (!isa<BasicBlock>(I->second.first)) {
|
|
I->second.first->replaceAllUsesWith(UndefValue::get(I->second.first
|
|
->getType()));
|
|
delete I->second.first;
|
|
I->second.first = 0;
|
|
}
|
|
}
|
|
|
|
bool LLParser::PerFunctionState::VerifyFunctionComplete() {
|
|
if (!ForwardRefVals.empty())
|
|
return P.Error(ForwardRefVals.begin()->second.second,
|
|
"use of undefined value '%" + ForwardRefVals.begin()->first +
|
|
"'");
|
|
if (!ForwardRefValIDs.empty())
|
|
return P.Error(ForwardRefValIDs.begin()->second.second,
|
|
"use of undefined value '%" +
|
|
utostr(ForwardRefValIDs.begin()->first) + "'");
|
|
return false;
|
|
}
|
|
|
|
|
|
/// GetVal - Get a value with the specified name or ID, creating a
|
|
/// forward reference record if needed. This can return null if the value
|
|
/// exists but does not have the right type.
|
|
Value *LLParser::PerFunctionState::GetVal(const std::string &Name,
|
|
const Type *Ty, LocTy Loc) {
|
|
// Look this name up in the normal function symbol table.
|
|
Value *Val = F.getValueSymbolTable().lookup(Name);
|
|
|
|
// If this is a forward reference for the value, see if we already created a
|
|
// forward ref record.
|
|
if (Val == 0) {
|
|
std::map<std::string, std::pair<Value*, LocTy> >::iterator
|
|
I = ForwardRefVals.find(Name);
|
|
if (I != ForwardRefVals.end())
|
|
Val = I->second.first;
|
|
}
|
|
|
|
// If we have the value in the symbol table or fwd-ref table, return it.
|
|
if (Val) {
|
|
if (Val->getType() == Ty) return Val;
|
|
if (Ty == Type::LabelTy)
|
|
P.Error(Loc, "'%" + Name + "' is not a basic block");
|
|
else
|
|
P.Error(Loc, "'%" + Name + "' defined with type '" +
|
|
Val->getType()->getDescription() + "'");
|
|
return 0;
|
|
}
|
|
|
|
// Don't make placeholders with invalid type.
|
|
if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && Ty != Type::LabelTy) {
|
|
P.Error(Loc, "invalid use of a non-first-class type");
|
|
return 0;
|
|
}
|
|
|
|
// Otherwise, create a new forward reference for this value and remember it.
|
|
Value *FwdVal;
|
|
if (Ty == Type::LabelTy)
|
|
FwdVal = BasicBlock::Create(Name, &F);
|
|
else
|
|
FwdVal = new Argument(Ty, Name);
|
|
|
|
ForwardRefVals[Name] = std::make_pair(FwdVal, Loc);
|
|
return FwdVal;
|
|
}
|
|
|
|
Value *LLParser::PerFunctionState::GetVal(unsigned ID, const Type *Ty,
|
|
LocTy Loc) {
|
|
// Look this name up in the normal function symbol table.
|
|
Value *Val = ID < NumberedVals.size() ? NumberedVals[ID] : 0;
|
|
|
|
// If this is a forward reference for the value, see if we already created a
|
|
// forward ref record.
|
|
if (Val == 0) {
|
|
std::map<unsigned, std::pair<Value*, LocTy> >::iterator
|
|
I = ForwardRefValIDs.find(ID);
|
|
if (I != ForwardRefValIDs.end())
|
|
Val = I->second.first;
|
|
}
|
|
|
|
// If we have the value in the symbol table or fwd-ref table, return it.
|
|
if (Val) {
|
|
if (Val->getType() == Ty) return Val;
|
|
if (Ty == Type::LabelTy)
|
|
P.Error(Loc, "'%" + utostr(ID) + "' is not a basic block");
|
|
else
|
|
P.Error(Loc, "'%" + utostr(ID) + "' defined with type '" +
|
|
Val->getType()->getDescription() + "'");
|
|
return 0;
|
|
}
|
|
|
|
if (!Ty->isFirstClassType() && !isa<OpaqueType>(Ty) && Ty != Type::LabelTy) {
|
|
P.Error(Loc, "invalid use of a non-first-class type");
|
|
return 0;
|
|
}
|
|
|
|
// Otherwise, create a new forward reference for this value and remember it.
|
|
Value *FwdVal;
|
|
if (Ty == Type::LabelTy)
|
|
FwdVal = BasicBlock::Create("", &F);
|
|
else
|
|
FwdVal = new Argument(Ty);
|
|
|
|
ForwardRefValIDs[ID] = std::make_pair(FwdVal, Loc);
|
|
return FwdVal;
|
|
}
|
|
|
|
/// SetInstName - After an instruction is parsed and inserted into its
|
|
/// basic block, this installs its name.
|
|
bool LLParser::PerFunctionState::SetInstName(int NameID,
|
|
const std::string &NameStr,
|
|
LocTy NameLoc, Instruction *Inst) {
|
|
// If this instruction has void type, it cannot have a name or ID specified.
|
|
if (Inst->getType() == Type::VoidTy) {
|
|
if (NameID != -1 || !NameStr.empty())
|
|
return P.Error(NameLoc, "instructions returning void cannot have a name");
|
|
return false;
|
|
}
|
|
|
|
// If this was a numbered instruction, verify that the instruction is the
|
|
// expected value and resolve any forward references.
|
|
if (NameStr.empty()) {
|
|
// If neither a name nor an ID was specified, just use the next ID.
|
|
if (NameID == -1)
|
|
NameID = NumberedVals.size();
|
|
|
|
if (unsigned(NameID) != NumberedVals.size())
|
|
return P.Error(NameLoc, "instruction expected to be numbered '%" +
|
|
utostr(NumberedVals.size()) + "'");
|
|
|
|
std::map<unsigned, std::pair<Value*, LocTy> >::iterator FI =
|
|
ForwardRefValIDs.find(NameID);
|
|
if (FI != ForwardRefValIDs.end()) {
|
|
if (FI->second.first->getType() != Inst->getType())
|
|
return P.Error(NameLoc, "instruction forward referenced with type '" +
|
|
FI->second.first->getType()->getDescription() + "'");
|
|
FI->second.first->replaceAllUsesWith(Inst);
|
|
ForwardRefValIDs.erase(FI);
|
|
}
|
|
|
|
NumberedVals.push_back(Inst);
|
|
return false;
|
|
}
|
|
|
|
// Otherwise, the instruction had a name. Resolve forward refs and set it.
|
|
std::map<std::string, std::pair<Value*, LocTy> >::iterator
|
|
FI = ForwardRefVals.find(NameStr);
|
|
if (FI != ForwardRefVals.end()) {
|
|
if (FI->second.first->getType() != Inst->getType())
|
|
return P.Error(NameLoc, "instruction forward referenced with type '" +
|
|
FI->second.first->getType()->getDescription() + "'");
|
|
FI->second.first->replaceAllUsesWith(Inst);
|
|
ForwardRefVals.erase(FI);
|
|
}
|
|
|
|
// Set the name on the instruction.
|
|
Inst->setName(NameStr);
|
|
|
|
if (Inst->getNameStr() != NameStr)
|
|
return P.Error(NameLoc, "multiple definition of local value named '" +
|
|
NameStr + "'");
|
|
return false;
|
|
}
|
|
|
|
/// GetBB - Get a basic block with the specified name or ID, creating a
|
|
/// forward reference record if needed.
|
|
BasicBlock *LLParser::PerFunctionState::GetBB(const std::string &Name,
|
|
LocTy Loc) {
|
|
return cast_or_null<BasicBlock>(GetVal(Name, Type::LabelTy, Loc));
|
|
}
|
|
|
|
BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
|
|
return cast_or_null<BasicBlock>(GetVal(ID, Type::LabelTy, Loc));
|
|
}
|
|
|
|
/// DefineBB - Define the specified basic block, which is either named or
|
|
/// unnamed. If there is an error, this returns null otherwise it returns
|
|
/// the block being defined.
|
|
BasicBlock *LLParser::PerFunctionState::DefineBB(const std::string &Name,
|
|
LocTy Loc) {
|
|
BasicBlock *BB;
|
|
if (Name.empty())
|
|
BB = GetBB(NumberedVals.size(), Loc);
|
|
else
|
|
BB = GetBB(Name, Loc);
|
|
if (BB == 0) return 0; // Already diagnosed error.
|
|
|
|
// Move the block to the end of the function. Forward ref'd blocks are
|
|
// inserted wherever they happen to be referenced.
|
|
F.getBasicBlockList().splice(F.end(), F.getBasicBlockList(), BB);
|
|
|
|
// Remove the block from forward ref sets.
|
|
if (Name.empty()) {
|
|
ForwardRefValIDs.erase(NumberedVals.size());
|
|
NumberedVals.push_back(BB);
|
|
} else {
|
|
// BB forward references are already in the function symbol table.
|
|
ForwardRefVals.erase(Name);
|
|
}
|
|
|
|
return BB;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Constants.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseValID - Parse an abstract value that doesn't necessarily have a
|
|
/// type implied. For example, if we parse "4" we don't know what integer type
|
|
/// it has. The value will later be combined with its type and checked for
|
|
/// sanity.
|
|
bool LLParser::ParseValID(ValID &ID) {
|
|
ID.Loc = Lex.getLoc();
|
|
switch (Lex.getKind()) {
|
|
default: return TokError("expected value token");
|
|
case lltok::GlobalID: // @42
|
|
ID.UIntVal = Lex.getUIntVal();
|
|
ID.Kind = ValID::t_GlobalID;
|
|
break;
|
|
case lltok::GlobalVar: // @foo
|
|
ID.StrVal = Lex.getStrVal();
|
|
ID.Kind = ValID::t_GlobalName;
|
|
break;
|
|
case lltok::LocalVarID: // %42
|
|
ID.UIntVal = Lex.getUIntVal();
|
|
ID.Kind = ValID::t_LocalID;
|
|
break;
|
|
case lltok::LocalVar: // %foo
|
|
case lltok::StringConstant: // "foo" - FIXME: REMOVE IN LLVM 3.0
|
|
ID.StrVal = Lex.getStrVal();
|
|
ID.Kind = ValID::t_LocalName;
|
|
break;
|
|
case lltok::APSInt:
|
|
ID.APSIntVal = Lex.getAPSIntVal();
|
|
ID.Kind = ValID::t_APSInt;
|
|
break;
|
|
case lltok::APFloat:
|
|
ID.APFloatVal = Lex.getAPFloatVal();
|
|
ID.Kind = ValID::t_APFloat;
|
|
break;
|
|
case lltok::kw_true:
|
|
ID.ConstantVal = ConstantInt::getTrue();
|
|
ID.Kind = ValID::t_Constant;
|
|
break;
|
|
case lltok::kw_false:
|
|
ID.ConstantVal = ConstantInt::getFalse();
|
|
ID.Kind = ValID::t_Constant;
|
|
break;
|
|
case lltok::kw_null: ID.Kind = ValID::t_Null; break;
|
|
case lltok::kw_undef: ID.Kind = ValID::t_Undef; break;
|
|
case lltok::kw_zeroinitializer: ID.Kind = ValID::t_Zero; break;
|
|
|
|
case lltok::lbrace: {
|
|
// ValID ::= '{' ConstVector '}'
|
|
Lex.Lex();
|
|
SmallVector<Constant*, 16> Elts;
|
|
if (ParseGlobalValueVector(Elts) ||
|
|
ParseToken(lltok::rbrace, "expected end of struct constant"))
|
|
return true;
|
|
|
|
ID.ConstantVal = ConstantStruct::get(&Elts[0], Elts.size(), false);
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::less: {
|
|
// ValID ::= '<' ConstVector '>' --> Vector.
|
|
// ValID ::= '<' '{' ConstVector '}' '>' --> Packed Struct.
|
|
Lex.Lex();
|
|
bool isPackedStruct = EatIfPresent(lltok::lbrace);
|
|
|
|
SmallVector<Constant*, 16> Elts;
|
|
LocTy FirstEltLoc = Lex.getLoc();
|
|
if (ParseGlobalValueVector(Elts) ||
|
|
(isPackedStruct &&
|
|
ParseToken(lltok::rbrace, "expected end of packed struct")) ||
|
|
ParseToken(lltok::greater, "expected end of constant"))
|
|
return true;
|
|
|
|
if (isPackedStruct) {
|
|
ID.ConstantVal = ConstantStruct::get(&Elts[0], Elts.size(), true);
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
|
|
if (Elts.empty())
|
|
return Error(ID.Loc, "constant vector must not be empty");
|
|
|
|
if (!Elts[0]->getType()->isInteger() &&
|
|
!Elts[0]->getType()->isFloatingPoint())
|
|
return Error(FirstEltLoc,
|
|
"vector elements must have integer or floating point type");
|
|
|
|
// Verify that all the vector elements have the same type.
|
|
for (unsigned i = 1, e = Elts.size(); i != e; ++i)
|
|
if (Elts[i]->getType() != Elts[0]->getType())
|
|
return Error(FirstEltLoc,
|
|
"vector element #" + utostr(i) +
|
|
" is not of type '" + Elts[0]->getType()->getDescription());
|
|
|
|
ID.ConstantVal = ConstantVector::get(&Elts[0], Elts.size());
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::lsquare: { // Array Constant
|
|
Lex.Lex();
|
|
SmallVector<Constant*, 16> Elts;
|
|
LocTy FirstEltLoc = Lex.getLoc();
|
|
if (ParseGlobalValueVector(Elts) ||
|
|
ParseToken(lltok::rsquare, "expected end of array constant"))
|
|
return true;
|
|
|
|
// Handle empty element.
|
|
if (Elts.empty()) {
|
|
// Use undef instead of an array because it's inconvenient to determine
|
|
// the element type at this point, there being no elements to examine.
|
|
ID.Kind = ValID::t_EmptyArray;
|
|
return false;
|
|
}
|
|
|
|
if (!Elts[0]->getType()->isFirstClassType())
|
|
return Error(FirstEltLoc, "invalid array element type: " +
|
|
Elts[0]->getType()->getDescription());
|
|
|
|
ArrayType *ATy = ArrayType::get(Elts[0]->getType(), Elts.size());
|
|
|
|
// Verify all elements are correct type!
|
|
for (unsigned i = 0, e = Elts.size(); i != e; ++i) {
|
|
if (Elts[i]->getType() != Elts[0]->getType())
|
|
return Error(FirstEltLoc,
|
|
"array element #" + utostr(i) +
|
|
" is not of type '" +Elts[0]->getType()->getDescription());
|
|
}
|
|
|
|
ID.ConstantVal = ConstantArray::get(ATy, &Elts[0], Elts.size());
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::kw_c: // c "foo"
|
|
Lex.Lex();
|
|
ID.ConstantVal = ConstantArray::get(Lex.getStrVal(), false);
|
|
if (ParseToken(lltok::StringConstant, "expected string")) return true;
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
|
|
case lltok::kw_asm: {
|
|
// ValID ::= 'asm' SideEffect? STRINGCONSTANT ',' STRINGCONSTANT
|
|
bool HasSideEffect;
|
|
Lex.Lex();
|
|
if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
|
|
ParseStringConstant(ID.StrVal) ||
|
|
ParseToken(lltok::comma, "expected comma in inline asm expression") ||
|
|
ParseToken(lltok::StringConstant, "expected constraint string"))
|
|
return true;
|
|
ID.StrVal2 = Lex.getStrVal();
|
|
ID.UIntVal = HasSideEffect;
|
|
ID.Kind = ValID::t_InlineAsm;
|
|
return false;
|
|
}
|
|
|
|
case lltok::kw_trunc:
|
|
case lltok::kw_zext:
|
|
case lltok::kw_sext:
|
|
case lltok::kw_fptrunc:
|
|
case lltok::kw_fpext:
|
|
case lltok::kw_bitcast:
|
|
case lltok::kw_uitofp:
|
|
case lltok::kw_sitofp:
|
|
case lltok::kw_fptoui:
|
|
case lltok::kw_fptosi:
|
|
case lltok::kw_inttoptr:
|
|
case lltok::kw_ptrtoint: {
|
|
unsigned Opc = Lex.getUIntVal();
|
|
PATypeHolder DestTy(Type::VoidTy);
|
|
Constant *SrcVal;
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
|
|
ParseGlobalTypeAndValue(SrcVal) ||
|
|
ParseToken(lltok::kw_to, "expected 'to' int constantexpr cast") ||
|
|
ParseType(DestTy) ||
|
|
ParseToken(lltok::rparen, "expected ')' at end of constantexpr cast"))
|
|
return true;
|
|
if (!CastInst::castIsValid((Instruction::CastOps)Opc, SrcVal, DestTy))
|
|
return Error(ID.Loc, "invalid cast opcode for cast from '" +
|
|
SrcVal->getType()->getDescription() + "' to '" +
|
|
DestTy->getDescription() + "'");
|
|
ID.ConstantVal = ConstantExpr::getCast((Instruction::CastOps)Opc, SrcVal,
|
|
DestTy);
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::kw_extractvalue: {
|
|
Lex.Lex();
|
|
Constant *Val;
|
|
SmallVector<unsigned, 4> Indices;
|
|
if (ParseToken(lltok::lparen, "expected '(' in extractvalue constantexpr")||
|
|
ParseGlobalTypeAndValue(Val) ||
|
|
ParseIndexList(Indices) ||
|
|
ParseToken(lltok::rparen, "expected ')' in extractvalue constantexpr"))
|
|
return true;
|
|
if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
|
|
return Error(ID.Loc, "extractvalue operand must be array or struct");
|
|
if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
|
|
Indices.end()))
|
|
return Error(ID.Loc, "invalid indices for extractvalue");
|
|
ID.ConstantVal = ConstantExpr::getExtractValue(Val,
|
|
&Indices[0], Indices.size());
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::kw_insertvalue: {
|
|
Lex.Lex();
|
|
Constant *Val0, *Val1;
|
|
SmallVector<unsigned, 4> Indices;
|
|
if (ParseToken(lltok::lparen, "expected '(' in insertvalue constantexpr")||
|
|
ParseGlobalTypeAndValue(Val0) ||
|
|
ParseToken(lltok::comma, "expected comma in insertvalue constantexpr")||
|
|
ParseGlobalTypeAndValue(Val1) ||
|
|
ParseIndexList(Indices) ||
|
|
ParseToken(lltok::rparen, "expected ')' in insertvalue constantexpr"))
|
|
return true;
|
|
if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
|
|
return Error(ID.Loc, "extractvalue operand must be array or struct");
|
|
if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
|
|
Indices.end()))
|
|
return Error(ID.Loc, "invalid indices for insertvalue");
|
|
ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1,
|
|
&Indices[0], Indices.size());
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::kw_icmp:
|
|
case lltok::kw_fcmp:
|
|
case lltok::kw_vicmp:
|
|
case lltok::kw_vfcmp: {
|
|
unsigned PredVal, Opc = Lex.getUIntVal();
|
|
Constant *Val0, *Val1;
|
|
Lex.Lex();
|
|
if (ParseCmpPredicate(PredVal, Opc) ||
|
|
ParseToken(lltok::lparen, "expected '(' in compare constantexpr") ||
|
|
ParseGlobalTypeAndValue(Val0) ||
|
|
ParseToken(lltok::comma, "expected comma in compare constantexpr") ||
|
|
ParseGlobalTypeAndValue(Val1) ||
|
|
ParseToken(lltok::rparen, "expected ')' in compare constantexpr"))
|
|
return true;
|
|
|
|
if (Val0->getType() != Val1->getType())
|
|
return Error(ID.Loc, "compare operands must have the same type");
|
|
|
|
CmpInst::Predicate Pred = (CmpInst::Predicate)PredVal;
|
|
|
|
if (Opc == Instruction::FCmp) {
|
|
if (!Val0->getType()->isFPOrFPVector())
|
|
return Error(ID.Loc, "fcmp requires floating point operands");
|
|
ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
|
|
} else if (Opc == Instruction::ICmp) {
|
|
if (!Val0->getType()->isIntOrIntVector() &&
|
|
!isa<PointerType>(Val0->getType()))
|
|
return Error(ID.Loc, "icmp requires pointer or integer operands");
|
|
ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
|
|
} else if (Opc == Instruction::VFCmp) {
|
|
// FIXME: REMOVE VFCMP Support
|
|
if (!Val0->getType()->isFPOrFPVector() ||
|
|
!isa<VectorType>(Val0->getType()))
|
|
return Error(ID.Loc, "vfcmp requires vector floating point operands");
|
|
ID.ConstantVal = ConstantExpr::getVFCmp(Pred, Val0, Val1);
|
|
} else if (Opc == Instruction::VICmp) {
|
|
// FIXME: REMOVE VICMP Support
|
|
if (!Val0->getType()->isIntOrIntVector() ||
|
|
!isa<VectorType>(Val0->getType()))
|
|
return Error(ID.Loc, "vicmp requires vector floating point operands");
|
|
ID.ConstantVal = ConstantExpr::getVICmp(Pred, Val0, Val1);
|
|
}
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
|
|
// Binary Operators.
|
|
case lltok::kw_add:
|
|
case lltok::kw_sub:
|
|
case lltok::kw_mul:
|
|
case lltok::kw_udiv:
|
|
case lltok::kw_sdiv:
|
|
case lltok::kw_fdiv:
|
|
case lltok::kw_urem:
|
|
case lltok::kw_srem:
|
|
case lltok::kw_frem: {
|
|
unsigned Opc = Lex.getUIntVal();
|
|
Constant *Val0, *Val1;
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::lparen, "expected '(' in binary constantexpr") ||
|
|
ParseGlobalTypeAndValue(Val0) ||
|
|
ParseToken(lltok::comma, "expected comma in binary constantexpr") ||
|
|
ParseGlobalTypeAndValue(Val1) ||
|
|
ParseToken(lltok::rparen, "expected ')' in binary constantexpr"))
|
|
return true;
|
|
if (Val0->getType() != Val1->getType())
|
|
return Error(ID.Loc, "operands of constexpr must have same type");
|
|
if (!Val0->getType()->isIntOrIntVector() &&
|
|
!Val0->getType()->isFPOrFPVector())
|
|
return Error(ID.Loc,"constexpr requires integer, fp, or vector operands");
|
|
ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
|
|
// Logical Operations
|
|
case lltok::kw_shl:
|
|
case lltok::kw_lshr:
|
|
case lltok::kw_ashr:
|
|
case lltok::kw_and:
|
|
case lltok::kw_or:
|
|
case lltok::kw_xor: {
|
|
unsigned Opc = Lex.getUIntVal();
|
|
Constant *Val0, *Val1;
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::lparen, "expected '(' in logical constantexpr") ||
|
|
ParseGlobalTypeAndValue(Val0) ||
|
|
ParseToken(lltok::comma, "expected comma in logical constantexpr") ||
|
|
ParseGlobalTypeAndValue(Val1) ||
|
|
ParseToken(lltok::rparen, "expected ')' in logical constantexpr"))
|
|
return true;
|
|
if (Val0->getType() != Val1->getType())
|
|
return Error(ID.Loc, "operands of constexpr must have same type");
|
|
if (!Val0->getType()->isIntOrIntVector())
|
|
return Error(ID.Loc,
|
|
"constexpr requires integer or integer vector operands");
|
|
ID.ConstantVal = ConstantExpr::get(Opc, Val0, Val1);
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
|
|
case lltok::kw_getelementptr:
|
|
case lltok::kw_shufflevector:
|
|
case lltok::kw_insertelement:
|
|
case lltok::kw_extractelement:
|
|
case lltok::kw_select: {
|
|
unsigned Opc = Lex.getUIntVal();
|
|
SmallVector<Constant*, 16> Elts;
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::lparen, "expected '(' in constantexpr") ||
|
|
ParseGlobalValueVector(Elts) ||
|
|
ParseToken(lltok::rparen, "expected ')' in constantexpr"))
|
|
return true;
|
|
|
|
if (Opc == Instruction::GetElementPtr) {
|
|
if (Elts.size() == 0 || !isa<PointerType>(Elts[0]->getType()))
|
|
return Error(ID.Loc, "getelementptr requires pointer operand");
|
|
|
|
if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
|
|
(Value**)&Elts[1], Elts.size()-1))
|
|
return Error(ID.Loc, "invalid indices for getelementptr");
|
|
ID.ConstantVal = ConstantExpr::getGetElementPtr(Elts[0],
|
|
&Elts[1], Elts.size()-1);
|
|
} else if (Opc == Instruction::Select) {
|
|
if (Elts.size() != 3)
|
|
return Error(ID.Loc, "expected three operands to select");
|
|
if (const char *Reason = SelectInst::areInvalidOperands(Elts[0], Elts[1],
|
|
Elts[2]))
|
|
return Error(ID.Loc, Reason);
|
|
ID.ConstantVal = ConstantExpr::getSelect(Elts[0], Elts[1], Elts[2]);
|
|
} else if (Opc == Instruction::ShuffleVector) {
|
|
if (Elts.size() != 3)
|
|
return Error(ID.Loc, "expected three operands to shufflevector");
|
|
if (!ShuffleVectorInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
|
|
return Error(ID.Loc, "invalid operands to shufflevector");
|
|
ID.ConstantVal = ConstantExpr::getShuffleVector(Elts[0], Elts[1],Elts[2]);
|
|
} else if (Opc == Instruction::ExtractElement) {
|
|
if (Elts.size() != 2)
|
|
return Error(ID.Loc, "expected two operands to extractelement");
|
|
if (!ExtractElementInst::isValidOperands(Elts[0], Elts[1]))
|
|
return Error(ID.Loc, "invalid extractelement operands");
|
|
ID.ConstantVal = ConstantExpr::getExtractElement(Elts[0], Elts[1]);
|
|
} else {
|
|
assert(Opc == Instruction::InsertElement && "Unknown opcode");
|
|
if (Elts.size() != 3)
|
|
return Error(ID.Loc, "expected three operands to insertelement");
|
|
if (!InsertElementInst::isValidOperands(Elts[0], Elts[1], Elts[2]))
|
|
return Error(ID.Loc, "invalid insertelement operands");
|
|
ID.ConstantVal = ConstantExpr::getInsertElement(Elts[0], Elts[1],Elts[2]);
|
|
}
|
|
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// ParseGlobalValue - Parse a global value with the specified type.
|
|
bool LLParser::ParseGlobalValue(const Type *Ty, Constant *&V) {
|
|
V = 0;
|
|
ValID ID;
|
|
return ParseValID(ID) ||
|
|
ConvertGlobalValIDToValue(Ty, ID, V);
|
|
}
|
|
|
|
/// ConvertGlobalValIDToValue - Apply a type to a ValID to get a fully resolved
|
|
/// constant.
|
|
bool LLParser::ConvertGlobalValIDToValue(const Type *Ty, ValID &ID,
|
|
Constant *&V) {
|
|
if (isa<FunctionType>(Ty))
|
|
return Error(ID.Loc, "functions are not values, refer to them as pointers");
|
|
|
|
switch (ID.Kind) {
|
|
default: assert(0 && "Unknown ValID!");
|
|
case ValID::t_LocalID:
|
|
case ValID::t_LocalName:
|
|
return Error(ID.Loc, "invalid use of function-local name");
|
|
case ValID::t_InlineAsm:
|
|
return Error(ID.Loc, "inline asm can only be an operand of call/invoke");
|
|
case ValID::t_GlobalName:
|
|
V = GetGlobalVal(ID.StrVal, Ty, ID.Loc);
|
|
return V == 0;
|
|
case ValID::t_GlobalID:
|
|
V = GetGlobalVal(ID.UIntVal, Ty, ID.Loc);
|
|
return V == 0;
|
|
case ValID::t_APSInt:
|
|
if (!isa<IntegerType>(Ty))
|
|
return Error(ID.Loc, "integer constant must have integer type");
|
|
ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
|
|
V = ConstantInt::get(ID.APSIntVal);
|
|
return false;
|
|
case ValID::t_APFloat:
|
|
if (!Ty->isFloatingPoint() ||
|
|
!ConstantFP::isValueValidForType(Ty, ID.APFloatVal))
|
|
return Error(ID.Loc, "floating point constant invalid for type");
|
|
|
|
// The lexer has no type info, so builds all float and double FP constants
|
|
// as double. Fix this here. Long double does not need this.
|
|
if (&ID.APFloatVal.getSemantics() == &APFloat::IEEEdouble &&
|
|
Ty == Type::FloatTy) {
|
|
bool Ignored;
|
|
ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
|
|
&Ignored);
|
|
}
|
|
V = ConstantFP::get(ID.APFloatVal);
|
|
|
|
if (V->getType() != Ty)
|
|
return Error(ID.Loc, "floating point constant does not have type '" +
|
|
Ty->getDescription() + "'");
|
|
|
|
return false;
|
|
case ValID::t_Null:
|
|
if (!isa<PointerType>(Ty))
|
|
return Error(ID.Loc, "null must be a pointer type");
|
|
V = ConstantPointerNull::get(cast<PointerType>(Ty));
|
|
return false;
|
|
case ValID::t_Undef:
|
|
// FIXME: LabelTy should not be a first-class type.
|
|
if ((!Ty->isFirstClassType() || Ty == Type::LabelTy) &&
|
|
!isa<OpaqueType>(Ty))
|
|
return Error(ID.Loc, "invalid type for undef constant");
|
|
V = UndefValue::get(Ty);
|
|
return false;
|
|
case ValID::t_EmptyArray:
|
|
if (!isa<ArrayType>(Ty) || cast<ArrayType>(Ty)->getNumElements() != 0)
|
|
return Error(ID.Loc, "invalid empty array initializer");
|
|
V = UndefValue::get(Ty);
|
|
return false;
|
|
case ValID::t_Zero:
|
|
// FIXME: LabelTy should not be a first-class type.
|
|
if (!Ty->isFirstClassType() || Ty == Type::LabelTy)
|
|
return Error(ID.Loc, "invalid type for null constant");
|
|
V = Constant::getNullValue(Ty);
|
|
return false;
|
|
case ValID::t_Constant:
|
|
if (ID.ConstantVal->getType() != Ty)
|
|
return Error(ID.Loc, "constant expression type mismatch");
|
|
V = ID.ConstantVal;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
|
|
PATypeHolder Type(Type::VoidTy);
|
|
return ParseType(Type) ||
|
|
ParseGlobalValue(Type, V);
|
|
}
|
|
|
|
/// ParseGlobalValueVector
|
|
/// ::= /*empty*/
|
|
/// ::= TypeAndValue (',' TypeAndValue)*
|
|
bool LLParser::ParseGlobalValueVector(SmallVectorImpl<Constant*> &Elts) {
|
|
// Empty list.
|
|
if (Lex.getKind() == lltok::rbrace ||
|
|
Lex.getKind() == lltok::rsquare ||
|
|
Lex.getKind() == lltok::greater ||
|
|
Lex.getKind() == lltok::rparen)
|
|
return false;
|
|
|
|
Constant *C;
|
|
if (ParseGlobalTypeAndValue(C)) return true;
|
|
Elts.push_back(C);
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
if (ParseGlobalTypeAndValue(C)) return true;
|
|
Elts.push_back(C);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Function Parsing.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
|
|
PerFunctionState &PFS) {
|
|
if (ID.Kind == ValID::t_LocalID)
|
|
V = PFS.GetVal(ID.UIntVal, Ty, ID.Loc);
|
|
else if (ID.Kind == ValID::t_LocalName)
|
|
V = PFS.GetVal(ID.StrVal, Ty, ID.Loc);
|
|
else if (ID.Kind == ValID::t_InlineAsm) {
|
|
const PointerType *PTy = dyn_cast<PointerType>(Ty);
|
|
const FunctionType *FTy =
|
|
PTy ? dyn_cast<FunctionType>(PTy->getElementType()) : 0;
|
|
if (!FTy || !InlineAsm::Verify(FTy, ID.StrVal2))
|
|
return Error(ID.Loc, "invalid type for inline asm constraint string");
|
|
V = InlineAsm::get(FTy, ID.StrVal, ID.StrVal2, ID.UIntVal);
|
|
return false;
|
|
} else {
|
|
Constant *C;
|
|
if (ConvertGlobalValIDToValue(Ty, ID, C)) return true;
|
|
V = C;
|
|
return false;
|
|
}
|
|
|
|
return V == 0;
|
|
}
|
|
|
|
bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState &PFS) {
|
|
V = 0;
|
|
ValID ID;
|
|
return ParseValID(ID) ||
|
|
ConvertValIDToValue(Ty, ID, V, PFS);
|
|
}
|
|
|
|
bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState &PFS) {
|
|
PATypeHolder T(Type::VoidTy);
|
|
return ParseType(T) ||
|
|
ParseValue(T, V, PFS);
|
|
}
|
|
|
|
/// FunctionHeader
|
|
/// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
|
|
/// Type GlobalName '(' ArgList ')' OptFuncAttrs OptSection
|
|
/// OptionalAlign OptGC
|
|
bool LLParser::ParseFunctionHeader(Function *&Fn, bool isDefine) {
|
|
// Parse the linkage.
|
|
LocTy LinkageLoc = Lex.getLoc();
|
|
unsigned Linkage;
|
|
|
|
unsigned Visibility, CC, RetAttrs;
|
|
PATypeHolder RetType(Type::VoidTy);
|
|
LocTy RetTypeLoc = Lex.getLoc();
|
|
if (ParseOptionalLinkage(Linkage) ||
|
|
ParseOptionalVisibility(Visibility) ||
|
|
ParseOptionalCallingConv(CC) ||
|
|
ParseOptionalAttrs(RetAttrs, 1) ||
|
|
ParseType(RetType, RetTypeLoc))
|
|
return true;
|
|
|
|
// Verify that the linkage is ok.
|
|
switch ((GlobalValue::LinkageTypes)Linkage) {
|
|
case GlobalValue::ExternalLinkage:
|
|
break; // always ok.
|
|
case GlobalValue::DLLImportLinkage:
|
|
case GlobalValue::ExternalWeakLinkage:
|
|
if (isDefine)
|
|
return Error(LinkageLoc, "invalid linkage for function definition");
|
|
break;
|
|
case GlobalValue::InternalLinkage:
|
|
case GlobalValue::LinkOnceLinkage:
|
|
case GlobalValue::WeakLinkage:
|
|
case GlobalValue::DLLExportLinkage:
|
|
if (!isDefine)
|
|
return Error(LinkageLoc, "invalid linkage for function declaration");
|
|
break;
|
|
case GlobalValue::AppendingLinkage:
|
|
case GlobalValue::GhostLinkage:
|
|
case GlobalValue::CommonLinkage:
|
|
return Error(LinkageLoc, "invalid function linkage type");
|
|
}
|
|
|
|
if (!FunctionType::isValidReturnType(RetType) ||
|
|
isa<OpaqueType>(RetType))
|
|
return Error(RetTypeLoc, "invalid function return type");
|
|
|
|
if (Lex.getKind() != lltok::GlobalVar)
|
|
return TokError("expected function name");
|
|
|
|
LocTy NameLoc = Lex.getLoc();
|
|
std::string FunctionName = Lex.getStrVal();
|
|
Lex.Lex();
|
|
|
|
if (Lex.getKind() != lltok::lparen)
|
|
return TokError("expected '(' in function argument list");
|
|
|
|
std::vector<ArgInfo> ArgList;
|
|
bool isVarArg;
|
|
unsigned FuncAttrs;
|
|
std::string Section;
|
|
unsigned Alignment;
|
|
std::string GC;
|
|
|
|
if (ParseArgumentList(ArgList, isVarArg, false) ||
|
|
ParseOptionalAttrs(FuncAttrs, 2) ||
|
|
(EatIfPresent(lltok::kw_section) &&
|
|
ParseStringConstant(Section)) ||
|
|
ParseOptionalAlignment(Alignment) ||
|
|
(EatIfPresent(lltok::kw_gc) &&
|
|
ParseStringConstant(GC)))
|
|
return true;
|
|
|
|
// If the alignment was parsed as an attribute, move to the alignment field.
|
|
if (FuncAttrs & Attribute::Alignment) {
|
|
Alignment = Attribute::getAlignmentFromAttrs(FuncAttrs);
|
|
FuncAttrs &= ~Attribute::Alignment;
|
|
}
|
|
|
|
// Okay, if we got here, the function is syntactically valid. Convert types
|
|
// and do semantic checks.
|
|
std::vector<const Type*> ParamTypeList;
|
|
SmallVector<AttributeWithIndex, 8> Attrs;
|
|
// FIXME : In 3.0, stop accepting zext, sext and inreg as optional function
|
|
// attributes.
|
|
unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
|
|
if (FuncAttrs & ObsoleteFuncAttrs) {
|
|
RetAttrs |= FuncAttrs & ObsoleteFuncAttrs;
|
|
FuncAttrs &= ~ObsoleteFuncAttrs;
|
|
}
|
|
|
|
if (RetAttrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
|
|
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
|
|
ParamTypeList.push_back(ArgList[i].Type);
|
|
if (ArgList[i].Attrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
|
|
}
|
|
|
|
if (FuncAttrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(~0, FuncAttrs));
|
|
|
|
AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
|
|
|
|
const FunctionType *FT = FunctionType::get(RetType, ParamTypeList, isVarArg);
|
|
const PointerType *PFT = PointerType::getUnqual(FT);
|
|
|
|
Fn = 0;
|
|
if (!FunctionName.empty()) {
|
|
// If this was a definition of a forward reference, remove the definition
|
|
// from the forward reference table and fill in the forward ref.
|
|
std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator FRVI =
|
|
ForwardRefVals.find(FunctionName);
|
|
if (FRVI != ForwardRefVals.end()) {
|
|
Fn = M->getFunction(FunctionName);
|
|
ForwardRefVals.erase(FRVI);
|
|
} else if ((Fn = M->getFunction(FunctionName))) {
|
|
// If this function already exists in the symbol table, then it is
|
|
// multiply defined. We accept a few cases for old backwards compat.
|
|
// FIXME: Remove this stuff for LLVM 3.0.
|
|
if (Fn->getType() != PFT || Fn->getAttributes() != PAL ||
|
|
(!Fn->isDeclaration() && isDefine)) {
|
|
// If the redefinition has different type or different attributes,
|
|
// reject it. If both have bodies, reject it.
|
|
return Error(NameLoc, "invalid redefinition of function '" +
|
|
FunctionName + "'");
|
|
} else if (Fn->isDeclaration()) {
|
|
// Make sure to strip off any argument names so we can't get conflicts.
|
|
for (Function::arg_iterator AI = Fn->arg_begin(), AE = Fn->arg_end();
|
|
AI != AE; ++AI)
|
|
AI->setName("");
|
|
}
|
|
}
|
|
|
|
} else if (FunctionName.empty()) {
|
|
// If this is a definition of a forward referenced function, make sure the
|
|
// types agree.
|
|
std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator I
|
|
= ForwardRefValIDs.find(NumberedVals.size());
|
|
if (I != ForwardRefValIDs.end()) {
|
|
Fn = cast<Function>(I->second.first);
|
|
if (Fn->getType() != PFT)
|
|
return Error(NameLoc, "type of definition and forward reference of '@" +
|
|
utostr(NumberedVals.size()) +"' disagree");
|
|
ForwardRefValIDs.erase(I);
|
|
}
|
|
}
|
|
|
|
if (Fn == 0)
|
|
Fn = Function::Create(FT, GlobalValue::ExternalLinkage, FunctionName, M);
|
|
else // Move the forward-reference to the correct spot in the module.
|
|
M->getFunctionList().splice(M->end(), M->getFunctionList(), Fn);
|
|
|
|
if (FunctionName.empty())
|
|
NumberedVals.push_back(Fn);
|
|
|
|
Fn->setLinkage((GlobalValue::LinkageTypes)Linkage);
|
|
Fn->setVisibility((GlobalValue::VisibilityTypes)Visibility);
|
|
Fn->setCallingConv(CC);
|
|
Fn->setAttributes(PAL);
|
|
Fn->setAlignment(Alignment);
|
|
Fn->setSection(Section);
|
|
if (!GC.empty()) Fn->setGC(GC.c_str());
|
|
|
|
// Add all of the arguments we parsed to the function.
|
|
Function::arg_iterator ArgIt = Fn->arg_begin();
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i, ++ArgIt) {
|
|
// If the argument has a name, insert it into the argument symbol table.
|
|
if (ArgList[i].Name.empty()) continue;
|
|
|
|
// Set the name, if it conflicted, it will be auto-renamed.
|
|
ArgIt->setName(ArgList[i].Name);
|
|
|
|
if (ArgIt->getNameStr() != ArgList[i].Name)
|
|
return Error(ArgList[i].Loc, "redefinition of argument '%" +
|
|
ArgList[i].Name + "'");
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
/// ParseFunctionBody
|
|
/// ::= '{' BasicBlock+ '}'
|
|
/// ::= 'begin' BasicBlock+ 'end' // FIXME: remove in LLVM 3.0
|
|
///
|
|
bool LLParser::ParseFunctionBody(Function &Fn) {
|
|
if (Lex.getKind() != lltok::lbrace && Lex.getKind() != lltok::kw_begin)
|
|
return TokError("expected '{' in function body");
|
|
Lex.Lex(); // eat the {.
|
|
|
|
PerFunctionState PFS(*this, Fn);
|
|
|
|
while (Lex.getKind() != lltok::rbrace && Lex.getKind() != lltok::kw_end)
|
|
if (ParseBasicBlock(PFS)) return true;
|
|
|
|
// Eat the }.
|
|
Lex.Lex();
|
|
|
|
// Verify function is ok.
|
|
return PFS.VerifyFunctionComplete();
|
|
}
|
|
|
|
/// ParseBasicBlock
|
|
/// ::= LabelStr? Instruction*
|
|
bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
|
|
// If this basic block starts out with a name, remember it.
|
|
std::string Name;
|
|
LocTy NameLoc = Lex.getLoc();
|
|
if (Lex.getKind() == lltok::LabelStr) {
|
|
Name = Lex.getStrVal();
|
|
Lex.Lex();
|
|
}
|
|
|
|
BasicBlock *BB = PFS.DefineBB(Name, NameLoc);
|
|
if (BB == 0) return true;
|
|
|
|
std::string NameStr;
|
|
|
|
// Parse the instructions in this block until we get a terminator.
|
|
Instruction *Inst;
|
|
do {
|
|
// This instruction may have three possibilities for a name: a) none
|
|
// specified, b) name specified "%foo =", c) number specified: "%4 =".
|
|
LocTy NameLoc = Lex.getLoc();
|
|
int NameID = -1;
|
|
NameStr = "";
|
|
|
|
if (Lex.getKind() == lltok::LocalVarID) {
|
|
NameID = Lex.getUIntVal();
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::equal, "expected '=' after instruction id"))
|
|
return true;
|
|
} else if (Lex.getKind() == lltok::LocalVar ||
|
|
// FIXME: REMOVE IN LLVM 3.0
|
|
Lex.getKind() == lltok::StringConstant) {
|
|
NameStr = Lex.getStrVal();
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::equal, "expected '=' after instruction name"))
|
|
return true;
|
|
}
|
|
|
|
if (ParseInstruction(Inst, BB, PFS)) return true;
|
|
|
|
BB->getInstList().push_back(Inst);
|
|
|
|
// Set the name on the instruction.
|
|
if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
|
|
} while (!isa<TerminatorInst>(Inst));
|
|
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Instruction Parsing.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseInstruction - Parse one of the many different instructions.
|
|
///
|
|
bool LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB,
|
|
PerFunctionState &PFS) {
|
|
lltok::Kind Token = Lex.getKind();
|
|
if (Token == lltok::Eof)
|
|
return TokError("found end of file when expecting more instructions");
|
|
LocTy Loc = Lex.getLoc();
|
|
Lex.Lex(); // Eat the keyword.
|
|
|
|
switch (Token) {
|
|
default: return Error(Loc, "expected instruction opcode");
|
|
// Terminator Instructions.
|
|
case lltok::kw_unwind: Inst = new UnwindInst(); return false;
|
|
case lltok::kw_unreachable: Inst = new UnreachableInst(); return false;
|
|
case lltok::kw_ret: return ParseRet(Inst, BB, PFS);
|
|
case lltok::kw_br: return ParseBr(Inst, PFS);
|
|
case lltok::kw_switch: return ParseSwitch(Inst, PFS);
|
|
case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
|
|
// Binary Operators.
|
|
case lltok::kw_add:
|
|
case lltok::kw_sub:
|
|
case lltok::kw_mul: return ParseArithmetic(Inst, PFS, Lex.getUIntVal(), 0);
|
|
|
|
case lltok::kw_udiv:
|
|
case lltok::kw_sdiv:
|
|
case lltok::kw_urem:
|
|
case lltok::kw_srem: return ParseArithmetic(Inst, PFS, Lex.getUIntVal(), 1);
|
|
case lltok::kw_fdiv:
|
|
case lltok::kw_frem: return ParseArithmetic(Inst, PFS, Lex.getUIntVal(), 2);
|
|
case lltok::kw_shl:
|
|
case lltok::kw_lshr:
|
|
case lltok::kw_ashr:
|
|
case lltok::kw_and:
|
|
case lltok::kw_or:
|
|
case lltok::kw_xor: return ParseLogical(Inst, PFS, Lex.getUIntVal());
|
|
case lltok::kw_icmp:
|
|
case lltok::kw_fcmp:
|
|
case lltok::kw_vicmp:
|
|
case lltok::kw_vfcmp: return ParseCompare(Inst, PFS, Lex.getUIntVal());
|
|
// Casts.
|
|
case lltok::kw_trunc:
|
|
case lltok::kw_zext:
|
|
case lltok::kw_sext:
|
|
case lltok::kw_fptrunc:
|
|
case lltok::kw_fpext:
|
|
case lltok::kw_bitcast:
|
|
case lltok::kw_uitofp:
|
|
case lltok::kw_sitofp:
|
|
case lltok::kw_fptoui:
|
|
case lltok::kw_fptosi:
|
|
case lltok::kw_inttoptr:
|
|
case lltok::kw_ptrtoint: return ParseCast(Inst, PFS, Lex.getUIntVal());
|
|
// Other.
|
|
case lltok::kw_select: return ParseSelect(Inst, PFS);
|
|
case lltok::kw_va_arg: return ParseVA_Arg(Inst, PFS);
|
|
case lltok::kw_extractelement: return ParseExtractElement(Inst, PFS);
|
|
case lltok::kw_insertelement: return ParseInsertElement(Inst, PFS);
|
|
case lltok::kw_shufflevector: return ParseShuffleVector(Inst, PFS);
|
|
case lltok::kw_phi: return ParsePHI(Inst, PFS);
|
|
case lltok::kw_call: return ParseCall(Inst, PFS, false);
|
|
case lltok::kw_tail: return ParseCall(Inst, PFS, true);
|
|
// Memory.
|
|
case lltok::kw_alloca:
|
|
case lltok::kw_malloc: return ParseAlloc(Inst, PFS, Lex.getUIntVal());
|
|
case lltok::kw_free: return ParseFree(Inst, PFS);
|
|
case lltok::kw_load: return ParseLoad(Inst, PFS, false);
|
|
case lltok::kw_store: return ParseStore(Inst, PFS, false);
|
|
case lltok::kw_volatile:
|
|
if (EatIfPresent(lltok::kw_load))
|
|
return ParseLoad(Inst, PFS, true);
|
|
else if (EatIfPresent(lltok::kw_store))
|
|
return ParseStore(Inst, PFS, true);
|
|
else
|
|
return TokError("expected 'load' or 'store'");
|
|
case lltok::kw_getresult: return ParseGetResult(Inst, PFS);
|
|
case lltok::kw_getelementptr: return ParseGetElementPtr(Inst, PFS);
|
|
case lltok::kw_extractvalue: return ParseExtractValue(Inst, PFS);
|
|
case lltok::kw_insertvalue: return ParseInsertValue(Inst, PFS);
|
|
}
|
|
}
|
|
|
|
/// ParseCmpPredicate - Parse an integer or fp predicate, based on Kind.
|
|
bool LLParser::ParseCmpPredicate(unsigned &P, unsigned Opc) {
|
|
// FIXME: REMOVE vicmp/vfcmp!
|
|
if (Opc == Instruction::FCmp || Opc == Instruction::VFCmp) {
|
|
switch (Lex.getKind()) {
|
|
default: TokError("expected fcmp predicate (e.g. 'oeq')");
|
|
case lltok::kw_oeq: P = CmpInst::FCMP_OEQ; break;
|
|
case lltok::kw_one: P = CmpInst::FCMP_ONE; break;
|
|
case lltok::kw_olt: P = CmpInst::FCMP_OLT; break;
|
|
case lltok::kw_ogt: P = CmpInst::FCMP_OGT; break;
|
|
case lltok::kw_ole: P = CmpInst::FCMP_OLE; break;
|
|
case lltok::kw_oge: P = CmpInst::FCMP_OGE; break;
|
|
case lltok::kw_ord: P = CmpInst::FCMP_ORD; break;
|
|
case lltok::kw_uno: P = CmpInst::FCMP_UNO; break;
|
|
case lltok::kw_ueq: P = CmpInst::FCMP_UEQ; break;
|
|
case lltok::kw_une: P = CmpInst::FCMP_UNE; break;
|
|
case lltok::kw_ult: P = CmpInst::FCMP_ULT; break;
|
|
case lltok::kw_ugt: P = CmpInst::FCMP_UGT; break;
|
|
case lltok::kw_ule: P = CmpInst::FCMP_ULE; break;
|
|
case lltok::kw_uge: P = CmpInst::FCMP_UGE; break;
|
|
case lltok::kw_true: P = CmpInst::FCMP_TRUE; break;
|
|
case lltok::kw_false: P = CmpInst::FCMP_FALSE; break;
|
|
}
|
|
} else {
|
|
switch (Lex.getKind()) {
|
|
default: TokError("expected icmp predicate (e.g. 'eq')");
|
|
case lltok::kw_eq: P = CmpInst::ICMP_EQ; break;
|
|
case lltok::kw_ne: P = CmpInst::ICMP_NE; break;
|
|
case lltok::kw_slt: P = CmpInst::ICMP_SLT; break;
|
|
case lltok::kw_sgt: P = CmpInst::ICMP_SGT; break;
|
|
case lltok::kw_sle: P = CmpInst::ICMP_SLE; break;
|
|
case lltok::kw_sge: P = CmpInst::ICMP_SGE; break;
|
|
case lltok::kw_ult: P = CmpInst::ICMP_ULT; break;
|
|
case lltok::kw_ugt: P = CmpInst::ICMP_UGT; break;
|
|
case lltok::kw_ule: P = CmpInst::ICMP_ULE; break;
|
|
case lltok::kw_uge: P = CmpInst::ICMP_UGE; break;
|
|
}
|
|
}
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Terminator Instructions.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseRet - Parse a return instruction.
|
|
/// ::= 'ret' void
|
|
/// ::= 'ret' TypeAndValue
|
|
/// ::= 'ret' TypeAndValue (',' TypeAndValue)+ [[obsolete: LLVM 3.0]]
|
|
bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
|
|
PerFunctionState &PFS) {
|
|
PATypeHolder Ty(Type::VoidTy);
|
|
if (ParseType(Ty)) return true;
|
|
|
|
if (Ty == Type::VoidTy) {
|
|
Inst = ReturnInst::Create();
|
|
return false;
|
|
}
|
|
|
|
Value *RV;
|
|
if (ParseValue(Ty, RV, PFS)) return true;
|
|
|
|
// The normal case is one return value.
|
|
if (Lex.getKind() == lltok::comma) {
|
|
// FIXME: LLVM 3.0 remove MRV support for 'ret i32 1, i32 2', requiring use
|
|
// of 'ret {i32,i32} {i32 1, i32 2}'
|
|
SmallVector<Value*, 8> RVs;
|
|
RVs.push_back(RV);
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
if (ParseTypeAndValue(RV, PFS)) return true;
|
|
RVs.push_back(RV);
|
|
}
|
|
|
|
RV = UndefValue::get(PFS.getFunction().getReturnType());
|
|
for (unsigned i = 0, e = RVs.size(); i != e; ++i) {
|
|
Instruction *I = InsertValueInst::Create(RV, RVs[i], i, "mrv");
|
|
BB->getInstList().push_back(I);
|
|
RV = I;
|
|
}
|
|
}
|
|
Inst = ReturnInst::Create(RV);
|
|
return false;
|
|
}
|
|
|
|
|
|
/// ParseBr
|
|
/// ::= 'br' TypeAndValue
|
|
/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
|
|
bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy Loc, Loc2;
|
|
Value *Op0, *Op1, *Op2;
|
|
if (ParseTypeAndValue(Op0, Loc, PFS)) return true;
|
|
|
|
if (BasicBlock *BB = dyn_cast<BasicBlock>(Op0)) {
|
|
Inst = BranchInst::Create(BB);
|
|
return false;
|
|
}
|
|
|
|
if (Op0->getType() != Type::Int1Ty)
|
|
return Error(Loc, "branch condition must have 'i1' type");
|
|
|
|
if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
|
|
ParseTypeAndValue(Op1, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after true destination") ||
|
|
ParseTypeAndValue(Op2, Loc2, PFS))
|
|
return true;
|
|
|
|
if (!isa<BasicBlock>(Op1))
|
|
return Error(Loc, "true destination of branch must be a basic block");
|
|
if (!isa<BasicBlock>(Op2))
|
|
return Error(Loc2, "true destination of branch must be a basic block");
|
|
|
|
Inst = BranchInst::Create(cast<BasicBlock>(Op1), cast<BasicBlock>(Op2), Op0);
|
|
return false;
|
|
}
|
|
|
|
/// ParseSwitch
|
|
/// Instruction
|
|
/// ::= 'switch' TypeAndValue ',' TypeAndValue '[' JumpTable ']'
|
|
/// JumpTable
|
|
/// ::= (TypeAndValue ',' TypeAndValue)*
|
|
bool LLParser::ParseSwitch(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy CondLoc, BBLoc;
|
|
Value *Cond, *DefaultBB;
|
|
if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after switch condition") ||
|
|
ParseTypeAndValue(DefaultBB, BBLoc, PFS) ||
|
|
ParseToken(lltok::lsquare, "expected '[' with switch table"))
|
|
return true;
|
|
|
|
if (!isa<IntegerType>(Cond->getType()))
|
|
return Error(CondLoc, "switch condition must have integer type");
|
|
if (!isa<BasicBlock>(DefaultBB))
|
|
return Error(BBLoc, "default destination must be a basic block");
|
|
|
|
// Parse the jump table pairs.
|
|
SmallPtrSet<Value*, 32> SeenCases;
|
|
SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
|
|
while (Lex.getKind() != lltok::rsquare) {
|
|
Value *Constant, *DestBB;
|
|
|
|
if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after case value") ||
|
|
ParseTypeAndValue(DestBB, BBLoc, PFS))
|
|
return true;
|
|
|
|
if (!SeenCases.insert(Constant))
|
|
return Error(CondLoc, "duplicate case value in switch");
|
|
if (!isa<ConstantInt>(Constant))
|
|
return Error(CondLoc, "case value is not a constant integer");
|
|
if (!isa<BasicBlock>(DestBB))
|
|
return Error(BBLoc, "case destination is not a basic block");
|
|
|
|
Table.push_back(std::make_pair(cast<ConstantInt>(Constant),
|
|
cast<BasicBlock>(DestBB)));
|
|
}
|
|
|
|
Lex.Lex(); // Eat the ']'.
|
|
|
|
SwitchInst *SI = SwitchInst::Create(Cond, cast<BasicBlock>(DefaultBB),
|
|
Table.size());
|
|
for (unsigned i = 0, e = Table.size(); i != e; ++i)
|
|
SI->addCase(Table[i].first, Table[i].second);
|
|
Inst = SI;
|
|
return false;
|
|
}
|
|
|
|
/// ParseInvoke
|
|
/// ::= 'invoke' OptionalCallingConv OptionalAttrs Type Value ParamList
|
|
/// OptionalAttrs 'to' TypeAndValue 'unwind' TypeAndValue
|
|
bool LLParser::ParseInvoke(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy CallLoc = Lex.getLoc();
|
|
unsigned CC, RetAttrs, FnAttrs;
|
|
PATypeHolder RetType(Type::VoidTy);
|
|
LocTy RetTypeLoc;
|
|
ValID CalleeID;
|
|
SmallVector<ParamInfo, 16> ArgList;
|
|
|
|
Value *NormalBB, *UnwindBB;
|
|
if (ParseOptionalCallingConv(CC) ||
|
|
ParseOptionalAttrs(RetAttrs, 1) ||
|
|
ParseType(RetType, RetTypeLoc) ||
|
|
ParseValID(CalleeID) ||
|
|
ParseParameterList(ArgList, PFS) ||
|
|
ParseOptionalAttrs(FnAttrs, 2) ||
|
|
ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
|
|
ParseTypeAndValue(NormalBB, PFS) ||
|
|
ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
|
|
ParseTypeAndValue(UnwindBB, PFS))
|
|
return true;
|
|
|
|
if (!isa<BasicBlock>(NormalBB))
|
|
return Error(CallLoc, "normal destination is not a basic block");
|
|
if (!isa<BasicBlock>(UnwindBB))
|
|
return Error(CallLoc, "unwind destination is not a basic block");
|
|
|
|
// If RetType is a non-function pointer type, then this is the short syntax
|
|
// for the call, which means that RetType is just the return type. Infer the
|
|
// rest of the function argument types from the arguments that are present.
|
|
const PointerType *PFTy = 0;
|
|
const FunctionType *Ty = 0;
|
|
if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
|
|
!(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
|
|
// Pull out the types of all of the arguments...
|
|
std::vector<const Type*> ParamTypes;
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
|
|
ParamTypes.push_back(ArgList[i].V->getType());
|
|
|
|
if (!FunctionType::isValidReturnType(RetType))
|
|
return Error(RetTypeLoc, "Invalid result type for LLVM function");
|
|
|
|
Ty = FunctionType::get(RetType, ParamTypes, false);
|
|
PFTy = PointerType::getUnqual(Ty);
|
|
}
|
|
|
|
// Look up the callee.
|
|
Value *Callee;
|
|
if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
|
|
|
|
// FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
|
|
// function attributes.
|
|
unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
|
|
if (FnAttrs & ObsoleteFuncAttrs) {
|
|
RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
|
|
FnAttrs &= ~ObsoleteFuncAttrs;
|
|
}
|
|
|
|
// Set up the Attributes for the function.
|
|
SmallVector<AttributeWithIndex, 8> Attrs;
|
|
if (RetAttrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
|
|
|
|
SmallVector<Value*, 8> Args;
|
|
|
|
// Loop through FunctionType's arguments and ensure they are specified
|
|
// correctly. Also, gather any parameter attributes.
|
|
FunctionType::param_iterator I = Ty->param_begin();
|
|
FunctionType::param_iterator E = Ty->param_end();
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
|
|
const Type *ExpectedTy = 0;
|
|
if (I != E) {
|
|
ExpectedTy = *I++;
|
|
} else if (!Ty->isVarArg()) {
|
|
return Error(ArgList[i].Loc, "too many arguments specified");
|
|
}
|
|
|
|
if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
|
|
return Error(ArgList[i].Loc, "argument is not of expected type '" +
|
|
ExpectedTy->getDescription() + "'");
|
|
Args.push_back(ArgList[i].V);
|
|
if (ArgList[i].Attrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
|
|
}
|
|
|
|
if (I != E)
|
|
return Error(CallLoc, "not enough parameters specified for call");
|
|
|
|
if (FnAttrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
|
|
|
|
// Finish off the Attributes and check them
|
|
AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
|
|
|
|
InvokeInst *II = InvokeInst::Create(Callee, cast<BasicBlock>(NormalBB),
|
|
cast<BasicBlock>(UnwindBB),
|
|
Args.begin(), Args.end());
|
|
II->setCallingConv(CC);
|
|
II->setAttributes(PAL);
|
|
Inst = II;
|
|
return false;
|
|
}
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Binary Operators.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseArithmetic
|
|
/// ::= ArithmeticOps TypeAndValue ',' Value
|
|
///
|
|
/// If OperandType is 0, then any FP or integer operand is allowed. If it is 1,
|
|
/// then any integer operand is allowed, if it is 2, any fp operand is allowed.
|
|
bool LLParser::ParseArithmetic(Instruction *&Inst, PerFunctionState &PFS,
|
|
unsigned Opc, unsigned OperandType) {
|
|
LocTy Loc; Value *LHS, *RHS;
|
|
if (ParseTypeAndValue(LHS, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' in arithmetic operation") ||
|
|
ParseValue(LHS->getType(), RHS, PFS))
|
|
return true;
|
|
|
|
bool Valid;
|
|
switch (OperandType) {
|
|
default: assert(0 && "Unknown operand type!");
|
|
case 0: // int or FP.
|
|
Valid = LHS->getType()->isIntOrIntVector() ||
|
|
LHS->getType()->isFPOrFPVector();
|
|
break;
|
|
case 1: Valid = LHS->getType()->isIntOrIntVector(); break;
|
|
case 2: Valid = LHS->getType()->isFPOrFPVector(); break;
|
|
}
|
|
|
|
if (!Valid)
|
|
return Error(Loc, "invalid operand type for instruction");
|
|
|
|
Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
|
|
return false;
|
|
}
|
|
|
|
/// ParseLogical
|
|
/// ::= ArithmeticOps TypeAndValue ',' Value {
|
|
bool LLParser::ParseLogical(Instruction *&Inst, PerFunctionState &PFS,
|
|
unsigned Opc) {
|
|
LocTy Loc; Value *LHS, *RHS;
|
|
if (ParseTypeAndValue(LHS, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' in logical operation") ||
|
|
ParseValue(LHS->getType(), RHS, PFS))
|
|
return true;
|
|
|
|
if (!LHS->getType()->isIntOrIntVector())
|
|
return Error(Loc,"instruction requires integer or integer vector operands");
|
|
|
|
Inst = BinaryOperator::Create((Instruction::BinaryOps)Opc, LHS, RHS);
|
|
return false;
|
|
}
|
|
|
|
|
|
/// ParseCompare
|
|
/// ::= 'icmp' IPredicates TypeAndValue ',' Value
|
|
/// ::= 'fcmp' FPredicates TypeAndValue ',' Value
|
|
/// ::= 'vicmp' IPredicates TypeAndValue ',' Value
|
|
/// ::= 'vfcmp' FPredicates TypeAndValue ',' Value
|
|
bool LLParser::ParseCompare(Instruction *&Inst, PerFunctionState &PFS,
|
|
unsigned Opc) {
|
|
// Parse the integer/fp comparison predicate.
|
|
LocTy Loc;
|
|
unsigned Pred;
|
|
Value *LHS, *RHS;
|
|
if (ParseCmpPredicate(Pred, Opc) ||
|
|
ParseTypeAndValue(LHS, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after compare value") ||
|
|
ParseValue(LHS->getType(), RHS, PFS))
|
|
return true;
|
|
|
|
if (Opc == Instruction::FCmp) {
|
|
if (!LHS->getType()->isFPOrFPVector())
|
|
return Error(Loc, "fcmp requires floating point operands");
|
|
Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
|
|
} else if (Opc == Instruction::ICmp) {
|
|
if (!LHS->getType()->isIntOrIntVector() &&
|
|
!isa<PointerType>(LHS->getType()))
|
|
return Error(Loc, "icmp requires integer operands");
|
|
Inst = new ICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
|
|
} else if (Opc == Instruction::VFCmp) {
|
|
if (!LHS->getType()->isFPOrFPVector() || !isa<VectorType>(LHS->getType()))
|
|
return Error(Loc, "vfcmp requires vector floating point operands");
|
|
Inst = new VFCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
|
|
} else if (Opc == Instruction::VICmp) {
|
|
if (!LHS->getType()->isIntOrIntVector() || !isa<VectorType>(LHS->getType()))
|
|
return Error(Loc, "vicmp requires vector floating point operands");
|
|
Inst = new VICmpInst(CmpInst::Predicate(Pred), LHS, RHS);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Other Instructions.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
/// ParseCast
|
|
/// ::= CastOpc TypeAndValue 'to' Type
|
|
bool LLParser::ParseCast(Instruction *&Inst, PerFunctionState &PFS,
|
|
unsigned Opc) {
|
|
LocTy Loc; Value *Op;
|
|
PATypeHolder DestTy(Type::VoidTy);
|
|
if (ParseTypeAndValue(Op, Loc, PFS) ||
|
|
ParseToken(lltok::kw_to, "expected 'to' after cast value") ||
|
|
ParseType(DestTy))
|
|
return true;
|
|
|
|
if (!CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy))
|
|
return Error(Loc, "invalid cast opcode for cast from '" +
|
|
Op->getType()->getDescription() + "' to '" +
|
|
DestTy->getDescription() + "'");
|
|
Inst = CastInst::Create((Instruction::CastOps)Opc, Op, DestTy);
|
|
return false;
|
|
}
|
|
|
|
/// ParseSelect
|
|
/// ::= 'select' TypeAndValue ',' TypeAndValue ',' TypeAndValue
|
|
bool LLParser::ParseSelect(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy Loc;
|
|
Value *Op0, *Op1, *Op2;
|
|
if (ParseTypeAndValue(Op0, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after select condition") ||
|
|
ParseTypeAndValue(Op1, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after select value") ||
|
|
ParseTypeAndValue(Op2, PFS))
|
|
return true;
|
|
|
|
if (const char *Reason = SelectInst::areInvalidOperands(Op0, Op1, Op2))
|
|
return Error(Loc, Reason);
|
|
|
|
Inst = SelectInst::Create(Op0, Op1, Op2);
|
|
return false;
|
|
}
|
|
|
|
/// ParseVA_Arg
|
|
/// ::= 'va_arg' TypeAndValue ',' Type
|
|
bool LLParser::ParseVA_Arg(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Op;
|
|
PATypeHolder EltTy(Type::VoidTy);
|
|
LocTy TypeLoc;
|
|
if (ParseTypeAndValue(Op, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after vaarg operand") ||
|
|
ParseType(EltTy, TypeLoc))
|
|
return true;
|
|
|
|
if (!EltTy->isFirstClassType())
|
|
return Error(TypeLoc, "va_arg requires operand with first class type");
|
|
|
|
Inst = new VAArgInst(Op, EltTy);
|
|
return false;
|
|
}
|
|
|
|
/// ParseExtractElement
|
|
/// ::= 'extractelement' TypeAndValue ',' TypeAndValue
|
|
bool LLParser::ParseExtractElement(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy Loc;
|
|
Value *Op0, *Op1;
|
|
if (ParseTypeAndValue(Op0, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after extract value") ||
|
|
ParseTypeAndValue(Op1, PFS))
|
|
return true;
|
|
|
|
if (!ExtractElementInst::isValidOperands(Op0, Op1))
|
|
return Error(Loc, "invalid extractelement operands");
|
|
|
|
Inst = new ExtractElementInst(Op0, Op1);
|
|
return false;
|
|
}
|
|
|
|
/// ParseInsertElement
|
|
/// ::= 'insertelement' TypeAndValue ',' TypeAndValue ',' TypeAndValue
|
|
bool LLParser::ParseInsertElement(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy Loc;
|
|
Value *Op0, *Op1, *Op2;
|
|
if (ParseTypeAndValue(Op0, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
|
|
ParseTypeAndValue(Op1, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
|
|
ParseTypeAndValue(Op2, PFS))
|
|
return true;
|
|
|
|
if (!InsertElementInst::isValidOperands(Op0, Op1, Op2))
|
|
return Error(Loc, "invalid extractelement operands");
|
|
|
|
Inst = InsertElementInst::Create(Op0, Op1, Op2);
|
|
return false;
|
|
}
|
|
|
|
/// ParseShuffleVector
|
|
/// ::= 'shufflevector' TypeAndValue ',' TypeAndValue ',' TypeAndValue
|
|
bool LLParser::ParseShuffleVector(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy Loc;
|
|
Value *Op0, *Op1, *Op2;
|
|
if (ParseTypeAndValue(Op0, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after shuffle mask") ||
|
|
ParseTypeAndValue(Op1, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after shuffle value") ||
|
|
ParseTypeAndValue(Op2, PFS))
|
|
return true;
|
|
|
|
if (!ShuffleVectorInst::isValidOperands(Op0, Op1, Op2))
|
|
return Error(Loc, "invalid extractelement operands");
|
|
|
|
Inst = new ShuffleVectorInst(Op0, Op1, Op2);
|
|
return false;
|
|
}
|
|
|
|
/// ParsePHI
|
|
/// ::= 'phi' Type '[' Value ',' Value ']' (',' '[' Value ',' Valueß ']')*
|
|
bool LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
|
|
PATypeHolder Ty(Type::VoidTy);
|
|
Value *Op0, *Op1;
|
|
LocTy TypeLoc = Lex.getLoc();
|
|
|
|
if (ParseType(Ty) ||
|
|
ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
|
|
ParseValue(Ty, Op0, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
|
|
ParseValue(Type::LabelTy, Op1, PFS) ||
|
|
ParseToken(lltok::rsquare, "expected ']' in phi value list"))
|
|
return true;
|
|
|
|
SmallVector<std::pair<Value*, BasicBlock*>, 16> PHIVals;
|
|
while (1) {
|
|
PHIVals.push_back(std::make_pair(Op0, cast<BasicBlock>(Op1)));
|
|
|
|
if (!EatIfPresent(lltok::comma))
|
|
break;
|
|
|
|
if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
|
|
ParseValue(Ty, Op0, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
|
|
ParseValue(Type::LabelTy, Op1, PFS) ||
|
|
ParseToken(lltok::rsquare, "expected ']' in phi value list"))
|
|
return true;
|
|
}
|
|
|
|
if (!Ty->isFirstClassType())
|
|
return Error(TypeLoc, "phi node must have first class type");
|
|
|
|
PHINode *PN = PHINode::Create(Ty);
|
|
PN->reserveOperandSpace(PHIVals.size());
|
|
for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
|
|
PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
|
|
Inst = PN;
|
|
return false;
|
|
}
|
|
|
|
/// ParseCall
|
|
/// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
|
|
/// ParameterList OptionalAttrs
|
|
bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
|
|
bool isTail) {
|
|
unsigned CC, RetAttrs, FnAttrs;
|
|
PATypeHolder RetType(Type::VoidTy);
|
|
LocTy RetTypeLoc;
|
|
ValID CalleeID;
|
|
SmallVector<ParamInfo, 16> ArgList;
|
|
LocTy CallLoc = Lex.getLoc();
|
|
|
|
if ((isTail && ParseToken(lltok::kw_call, "expected 'tail call'")) ||
|
|
ParseOptionalCallingConv(CC) ||
|
|
ParseOptionalAttrs(RetAttrs, 1) ||
|
|
ParseType(RetType, RetTypeLoc) ||
|
|
ParseValID(CalleeID) ||
|
|
ParseParameterList(ArgList, PFS) ||
|
|
ParseOptionalAttrs(FnAttrs, 2))
|
|
return true;
|
|
|
|
// If RetType is a non-function pointer type, then this is the short syntax
|
|
// for the call, which means that RetType is just the return type. Infer the
|
|
// rest of the function argument types from the arguments that are present.
|
|
const PointerType *PFTy = 0;
|
|
const FunctionType *Ty = 0;
|
|
if (!(PFTy = dyn_cast<PointerType>(RetType)) ||
|
|
!(Ty = dyn_cast<FunctionType>(PFTy->getElementType()))) {
|
|
// Pull out the types of all of the arguments...
|
|
std::vector<const Type*> ParamTypes;
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
|
|
ParamTypes.push_back(ArgList[i].V->getType());
|
|
|
|
if (!FunctionType::isValidReturnType(RetType))
|
|
return Error(RetTypeLoc, "Invalid result type for LLVM function");
|
|
|
|
Ty = FunctionType::get(RetType, ParamTypes, false);
|
|
PFTy = PointerType::getUnqual(Ty);
|
|
}
|
|
|
|
// Look up the callee.
|
|
Value *Callee;
|
|
if (ConvertValIDToValue(PFTy, CalleeID, Callee, PFS)) return true;
|
|
|
|
// Check for call to invalid intrinsic to avoid crashing later.
|
|
if (Function *F = dyn_cast<Function>(Callee)) {
|
|
if (F->hasName() && F->getNameLen() >= 5 &&
|
|
!strncmp(F->getValueName()->getKeyData(), "llvm.", 5) &&
|
|
!F->getIntrinsicID(true))
|
|
return Error(CallLoc, "Call to invalid LLVM intrinsic function '" +
|
|
F->getNameStr() + "'");
|
|
}
|
|
|
|
// FIXME: In LLVM 3.0, stop accepting zext, sext and inreg as optional
|
|
// function attributes.
|
|
unsigned ObsoleteFuncAttrs = Attribute::ZExt|Attribute::SExt|Attribute::InReg;
|
|
if (FnAttrs & ObsoleteFuncAttrs) {
|
|
RetAttrs |= FnAttrs & ObsoleteFuncAttrs;
|
|
FnAttrs &= ~ObsoleteFuncAttrs;
|
|
}
|
|
|
|
// Set up the Attributes for the function.
|
|
SmallVector<AttributeWithIndex, 8> Attrs;
|
|
if (RetAttrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(0, RetAttrs));
|
|
|
|
SmallVector<Value*, 8> Args;
|
|
|
|
// Loop through FunctionType's arguments and ensure they are specified
|
|
// correctly. Also, gather any parameter attributes.
|
|
FunctionType::param_iterator I = Ty->param_begin();
|
|
FunctionType::param_iterator E = Ty->param_end();
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i) {
|
|
const Type *ExpectedTy = 0;
|
|
if (I != E) {
|
|
ExpectedTy = *I++;
|
|
} else if (!Ty->isVarArg()) {
|
|
return Error(ArgList[i].Loc, "too many arguments specified");
|
|
}
|
|
|
|
if (ExpectedTy && ExpectedTy != ArgList[i].V->getType())
|
|
return Error(ArgList[i].Loc, "argument is not of expected type '" +
|
|
ExpectedTy->getDescription() + "'");
|
|
Args.push_back(ArgList[i].V);
|
|
if (ArgList[i].Attrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(i+1, ArgList[i].Attrs));
|
|
}
|
|
|
|
if (I != E)
|
|
return Error(CallLoc, "not enough parameters specified for call");
|
|
|
|
if (FnAttrs != Attribute::None)
|
|
Attrs.push_back(AttributeWithIndex::get(~0, FnAttrs));
|
|
|
|
// Finish off the Attributes and check them
|
|
AttrListPtr PAL = AttrListPtr::get(Attrs.begin(), Attrs.end());
|
|
|
|
CallInst *CI = CallInst::Create(Callee, Args.begin(), Args.end());
|
|
CI->setTailCall(isTail);
|
|
CI->setCallingConv(CC);
|
|
CI->setAttributes(PAL);
|
|
Inst = CI;
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Memory Instructions.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseAlloc
|
|
/// ::= 'malloc' Type (',' TypeAndValue)? (',' OptionalAlignment)?
|
|
/// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalAlignment)?
|
|
bool LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS,
|
|
unsigned Opc) {
|
|
PATypeHolder Ty(Type::VoidTy);
|
|
Value *Size = 0;
|
|
LocTy SizeLoc = 0;
|
|
unsigned Alignment = 0;
|
|
if (ParseType(Ty)) return true;
|
|
|
|
if (EatIfPresent(lltok::comma)) {
|
|
if (Lex.getKind() == lltok::kw_align) {
|
|
if (ParseOptionalAlignment(Alignment)) return true;
|
|
} else if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
|
|
ParseOptionalCommaAlignment(Alignment)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (Size && Size->getType() != Type::Int32Ty)
|
|
return Error(SizeLoc, "element count must be i32");
|
|
|
|
if (Opc == Instruction::Malloc)
|
|
Inst = new MallocInst(Ty, Size, Alignment);
|
|
else
|
|
Inst = new AllocaInst(Ty, Size, Alignment);
|
|
return false;
|
|
}
|
|
|
|
/// ParseFree
|
|
/// ::= 'free' TypeAndValue
|
|
bool LLParser::ParseFree(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Val; LocTy Loc;
|
|
if (ParseTypeAndValue(Val, Loc, PFS)) return true;
|
|
if (!isa<PointerType>(Val->getType()))
|
|
return Error(Loc, "operand to free must be a pointer");
|
|
Inst = new FreeInst(Val);
|
|
return false;
|
|
}
|
|
|
|
/// ParseLoad
|
|
/// ::= 'volatile'? 'load' TypeAndValue (',' 'align' uint)?
|
|
bool LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
|
|
bool isVolatile) {
|
|
Value *Val; LocTy Loc;
|
|
unsigned Alignment;
|
|
if (ParseTypeAndValue(Val, Loc, PFS) ||
|
|
ParseOptionalCommaAlignment(Alignment))
|
|
return true;
|
|
|
|
if (!isa<PointerType>(Val->getType()) ||
|
|
!cast<PointerType>(Val->getType())->getElementType()->isFirstClassType())
|
|
return Error(Loc, "load operand must be a pointer to a first class type");
|
|
|
|
Inst = new LoadInst(Val, "", isVolatile, Alignment);
|
|
return false;
|
|
}
|
|
|
|
/// ParseStore
|
|
/// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' uint)?
|
|
bool LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
|
|
bool isVolatile) {
|
|
Value *Val, *Ptr; LocTy Loc, PtrLoc;
|
|
unsigned Alignment;
|
|
if (ParseTypeAndValue(Val, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after store operand") ||
|
|
ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
|
|
ParseOptionalCommaAlignment(Alignment))
|
|
return true;
|
|
|
|
if (!isa<PointerType>(Ptr->getType()))
|
|
return Error(PtrLoc, "store operand must be a pointer");
|
|
if (!Val->getType()->isFirstClassType())
|
|
return Error(Loc, "store operand must be a first class value");
|
|
if (cast<PointerType>(Ptr->getType())->getElementType() != Val->getType())
|
|
return Error(Loc, "stored value and pointer type do not match");
|
|
|
|
Inst = new StoreInst(Val, Ptr, isVolatile, Alignment);
|
|
return false;
|
|
}
|
|
|
|
/// ParseGetResult
|
|
/// ::= 'getresult' TypeAndValue ',' uint
|
|
/// FIXME: Remove support for getresult in LLVM 3.0
|
|
bool LLParser::ParseGetResult(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Val; LocTy ValLoc, EltLoc;
|
|
unsigned Element;
|
|
if (ParseTypeAndValue(Val, ValLoc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after getresult operand") ||
|
|
ParseUInt32(Element, EltLoc))
|
|
return true;
|
|
|
|
if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
|
|
return Error(ValLoc, "getresult inst requires an aggregate operand");
|
|
if (!ExtractValueInst::getIndexedType(Val->getType(), Element))
|
|
return Error(EltLoc, "invalid getresult index for value");
|
|
Inst = ExtractValueInst::Create(Val, Element);
|
|
return false;
|
|
}
|
|
|
|
/// ParseGetElementPtr
|
|
/// ::= 'getelementptr' TypeAndValue (',' TypeAndValue)*
|
|
bool LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Ptr, *Val; LocTy Loc, EltLoc;
|
|
if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
|
|
|
|
if (!isa<PointerType>(Ptr->getType()))
|
|
return Error(Loc, "base of getelementptr must be a pointer");
|
|
|
|
SmallVector<Value*, 16> Indices;
|
|
while (EatIfPresent(lltok::comma)) {
|
|
if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
|
|
if (!isa<IntegerType>(Val->getType()))
|
|
return Error(EltLoc, "getelementptr index must be an integer");
|
|
Indices.push_back(Val);
|
|
}
|
|
|
|
if (!GetElementPtrInst::getIndexedType(Ptr->getType(),
|
|
Indices.begin(), Indices.end()))
|
|
return Error(Loc, "invalid getelementptr indices");
|
|
Inst = GetElementPtrInst::Create(Ptr, Indices.begin(), Indices.end());
|
|
return false;
|
|
}
|
|
|
|
/// ParseExtractValue
|
|
/// ::= 'extractvalue' TypeAndValue (',' uint32)+
|
|
bool LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Val; LocTy Loc;
|
|
SmallVector<unsigned, 4> Indices;
|
|
if (ParseTypeAndValue(Val, Loc, PFS) ||
|
|
ParseIndexList(Indices))
|
|
return true;
|
|
|
|
if (!isa<StructType>(Val->getType()) && !isa<ArrayType>(Val->getType()))
|
|
return Error(Loc, "extractvalue operand must be array or struct");
|
|
|
|
if (!ExtractValueInst::getIndexedType(Val->getType(), Indices.begin(),
|
|
Indices.end()))
|
|
return Error(Loc, "invalid indices for extractvalue");
|
|
Inst = ExtractValueInst::Create(Val, Indices.begin(), Indices.end());
|
|
return false;
|
|
}
|
|
|
|
/// ParseInsertValue
|
|
/// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
|
|
bool LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Val0, *Val1; LocTy Loc0, Loc1;
|
|
SmallVector<unsigned, 4> Indices;
|
|
if (ParseTypeAndValue(Val0, Loc0, PFS) ||
|
|
ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
|
|
ParseTypeAndValue(Val1, Loc1, PFS) ||
|
|
ParseIndexList(Indices))
|
|
return true;
|
|
|
|
if (!isa<StructType>(Val0->getType()) && !isa<ArrayType>(Val0->getType()))
|
|
return Error(Loc0, "extractvalue operand must be array or struct");
|
|
|
|
if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices.begin(),
|
|
Indices.end()))
|
|
return Error(Loc0, "invalid indices for insertvalue");
|
|
Inst = InsertValueInst::Create(Val0, Val1, Indices.begin(), Indices.end());
|
|
return false;
|
|
}
|