mirror of
https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135265 91177308-0d34-0410-b5e6-96231b3b80d8
3743 lines
127 KiB
C++
3743 lines
127 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/Operator.h"
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#include "llvm/ValueSymbolTable.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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static std::string getTypeString(const Type *T) {
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std::string Result;
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raw_string_ostream Tmp(Result);
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Tmp << *T;
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return Tmp.str();
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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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// Handle any instruction metadata forward references.
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if (!ForwardRefInstMetadata.empty()) {
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for (DenseMap<Instruction*, std::vector<MDRef> >::iterator
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I = ForwardRefInstMetadata.begin(), E = ForwardRefInstMetadata.end();
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I != E; ++I) {
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Instruction *Inst = I->first;
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const std::vector<MDRef> &MDList = I->second;
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for (unsigned i = 0, e = MDList.size(); i != e; ++i) {
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unsigned SlotNo = MDList[i].MDSlot;
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if (SlotNo >= NumberedMetadata.size() || NumberedMetadata[SlotNo] == 0)
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return Error(MDList[i].Loc, "use of undefined metadata '!" +
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Twine(SlotNo) + "'");
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Inst->setMetadata(MDList[i].MDKind, NumberedMetadata[SlotNo]);
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}
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}
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ForwardRefInstMetadata.clear();
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}
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// If there are entries in ForwardRefBlockAddresses at this point, they are
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// references after the function was defined. Resolve those now.
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while (!ForwardRefBlockAddresses.empty()) {
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// Okay, we are referencing an already-parsed function, resolve them now.
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Function *TheFn = 0;
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const ValID &Fn = ForwardRefBlockAddresses.begin()->first;
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if (Fn.Kind == ValID::t_GlobalName)
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TheFn = M->getFunction(Fn.StrVal);
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else if (Fn.UIntVal < NumberedVals.size())
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TheFn = dyn_cast<Function>(NumberedVals[Fn.UIntVal]);
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if (TheFn == 0)
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return Error(Fn.Loc, "unknown function referenced by blockaddress");
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// Resolve all these references.
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if (ResolveForwardRefBlockAddresses(TheFn,
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ForwardRefBlockAddresses.begin()->second,
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0))
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return true;
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ForwardRefBlockAddresses.erase(ForwardRefBlockAddresses.begin());
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}
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for (unsigned i = 0, e = NumberedTypes.size(); i != e; ++i)
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if (NumberedTypes[i].second.isValid())
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return Error(NumberedTypes[i].second,
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"use of undefined type '%" + Twine(i) + "'");
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for (StringMap<std::pair<Type*, LocTy> >::iterator I =
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NamedTypes.begin(), E = NamedTypes.end(); I != E; ++I)
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if (I->second.second.isValid())
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return Error(I->second.second,
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"use of undefined type named '" + I->getKey() + "'");
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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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Twine(ForwardRefValIDs.begin()->first) + "'");
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if (!ForwardRefMDNodes.empty())
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return Error(ForwardRefMDNodes.begin()->second.second,
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"use of undefined metadata '!" +
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Twine(ForwardRefMDNodes.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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// Check debug info intrinsics.
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CheckDebugInfoIntrinsics(M);
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return false;
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}
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bool LLParser::ResolveForwardRefBlockAddresses(Function *TheFn,
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std::vector<std::pair<ValID, GlobalValue*> > &Refs,
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PerFunctionState *PFS) {
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// Loop over all the references, resolving them.
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for (unsigned i = 0, e = Refs.size(); i != e; ++i) {
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BasicBlock *Res;
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if (PFS) {
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if (Refs[i].first.Kind == ValID::t_LocalName)
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Res = PFS->GetBB(Refs[i].first.StrVal, Refs[i].first.Loc);
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else
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Res = PFS->GetBB(Refs[i].first.UIntVal, Refs[i].first.Loc);
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} else if (Refs[i].first.Kind == ValID::t_LocalID) {
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return Error(Refs[i].first.Loc,
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"cannot take address of numeric label after the function is defined");
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} else {
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Res = dyn_cast_or_null<BasicBlock>(
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TheFn->getValueSymbolTable().lookup(Refs[i].first.StrVal));
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}
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if (Res == 0)
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return Error(Refs[i].first.Loc,
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"referenced value is not a basic block");
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// Get the BlockAddress for this and update references to use it.
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BlockAddress *BA = BlockAddress::get(TheFn, Res);
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Refs[i].second->replaceAllUsesWith(BA);
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Refs[i].second->eraseFromParent();
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}
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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_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::LocalVarID: if (ParseUnnamedType()) return true; break;
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case lltok::LocalVar: if (ParseNamedType()) return true; break;
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case lltok::GlobalID: if (ParseUnnamedGlobal()) return true; break;
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case lltok::GlobalVar: if (ParseNamedGlobal()) return true; break;
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case lltok::exclaim: if (ParseStandaloneMetadata()) return true; break;
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case lltok::MetadataVar: if (ParseNamedMetadata()) 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 OptionalUnNammedAddr
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// ('constant'|'global') ...
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case lltok::kw_private: // OptionalLinkage
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case lltok::kw_linker_private: // OptionalLinkage
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case lltok::kw_linker_private_weak: // OptionalLinkage
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case lltok::kw_linker_private_weak_def_auto: // OptionalLinkage
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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_weak_odr: // OptionalLinkage
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case lltok::kw_linkonce: // OptionalLinkage
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case lltok::kw_linkonce_odr: // 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("", SMLoc(), 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("", SMLoc(), 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("", SMLoc(), 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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M->appendModuleInlineAsm(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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/// ParseUnnamedType:
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/// ::= LocalVarID '=' 'type' type
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bool LLParser::ParseUnnamedType() {
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LocTy TypeLoc = Lex.getLoc();
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unsigned TypeID = Lex.getUIntVal();
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Lex.Lex(); // eat LocalVarID;
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if (ParseToken(lltok::equal, "expected '=' after name") ||
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ParseToken(lltok::kw_type, "expected 'type' after '='"))
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return true;
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if (TypeID >= NumberedTypes.size())
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NumberedTypes.resize(TypeID+1);
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Type *Result = 0;
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if (ParseStructDefinition(TypeLoc, "",
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NumberedTypes[TypeID], Result)) return true;
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if (!isa<StructType>(Result)) {
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std::pair<Type*, LocTy> &Entry = NumberedTypes[TypeID];
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if (Entry.first)
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return Error(TypeLoc, "non-struct types may not be recursive");
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Entry.first = Result;
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Entry.second = SMLoc();
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}
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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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if (ParseToken(lltok::equal, "expected '=' after name") ||
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ParseToken(lltok::kw_type, "expected 'type' after name"))
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return true;
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Type *Result = 0;
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if (ParseStructDefinition(NameLoc, Name,
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NamedTypes[Name], Result)) return true;
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if (!isa<StructType>(Result)) {
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std::pair<Type*, LocTy> &Entry = NamedTypes[Name];
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if (Entry.first)
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return Error(NameLoc, "non-struct types may not be recursive");
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Entry.first = Result;
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Entry.second = SMLoc();
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}
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return false;
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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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IsConstant = false;
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return TokError("expected 'global' or 'constant'");
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}
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Lex.Lex();
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return false;
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}
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/// ParseUnnamedGlobal:
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/// OptionalVisibility ALIAS ...
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/// OptionalLinkage OptionalVisibility ... -> global variable
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/// GlobalID '=' OptionalVisibility ALIAS ...
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/// GlobalID '=' OptionalLinkage OptionalVisibility ... -> global variable
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bool LLParser::ParseUnnamedGlobal() {
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unsigned VarID = NumberedVals.size();
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std::string Name;
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LocTy NameLoc = Lex.getLoc();
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// Handle the GlobalID form.
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if (Lex.getKind() == lltok::GlobalID) {
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if (Lex.getUIntVal() != VarID)
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return Error(Lex.getLoc(), "variable expected to be numbered '%" +
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Twine(VarID) + "'");
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Lex.Lex(); // eat GlobalID;
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if (ParseToken(lltok::equal, "expected '=' after name"))
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return true;
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}
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bool HasLinkage;
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unsigned Linkage, Visibility;
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if (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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/// 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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// MDString:
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// ::= '!' STRINGCONSTANT
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bool LLParser::ParseMDString(MDString *&Result) {
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std::string Str;
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if (ParseStringConstant(Str)) return true;
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Result = MDString::get(Context, Str);
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return false;
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}
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// MDNode:
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// ::= '!' MDNodeNumber
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//
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/// This version of ParseMDNodeID returns the slot number and null in the case
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/// of a forward reference.
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bool LLParser::ParseMDNodeID(MDNode *&Result, unsigned &SlotNo) {
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// !{ ..., !42, ... }
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if (ParseUInt32(SlotNo)) return true;
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// Check existing MDNode.
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if (SlotNo < NumberedMetadata.size() && NumberedMetadata[SlotNo] != 0)
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Result = NumberedMetadata[SlotNo];
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else
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Result = 0;
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return false;
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}
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bool LLParser::ParseMDNodeID(MDNode *&Result) {
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// !{ ..., !42, ... }
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unsigned MID = 0;
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if (ParseMDNodeID(Result, MID)) return true;
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// If not a forward reference, just return it now.
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if (Result) return false;
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// Otherwise, create MDNode forward reference.
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MDNode *FwdNode = MDNode::getTemporary(Context, ArrayRef<Value*>());
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ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc());
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if (NumberedMetadata.size() <= MID)
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NumberedMetadata.resize(MID+1);
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NumberedMetadata[MID] = FwdNode;
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Result = FwdNode;
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return false;
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}
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/// ParseNamedMetadata:
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/// !foo = !{ !1, !2 }
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bool LLParser::ParseNamedMetadata() {
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assert(Lex.getKind() == lltok::MetadataVar);
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std::string Name = Lex.getStrVal();
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Lex.Lex();
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if (ParseToken(lltok::equal, "expected '=' here") ||
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ParseToken(lltok::exclaim, "Expected '!' here") ||
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ParseToken(lltok::lbrace, "Expected '{' here"))
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return true;
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|
|
NamedMDNode *NMD = M->getOrInsertNamedMetadata(Name);
|
|
if (Lex.getKind() != lltok::rbrace)
|
|
do {
|
|
if (ParseToken(lltok::exclaim, "Expected '!' here"))
|
|
return true;
|
|
|
|
MDNode *N = 0;
|
|
if (ParseMDNodeID(N)) return true;
|
|
NMD->addOperand(N);
|
|
} while (EatIfPresent(lltok::comma));
|
|
|
|
if (ParseToken(lltok::rbrace, "expected end of metadata node"))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// ParseStandaloneMetadata:
|
|
/// !42 = !{...}
|
|
bool LLParser::ParseStandaloneMetadata() {
|
|
assert(Lex.getKind() == lltok::exclaim);
|
|
Lex.Lex();
|
|
unsigned MetadataID = 0;
|
|
|
|
LocTy TyLoc;
|
|
Type *Ty = 0;
|
|
SmallVector<Value *, 16> Elts;
|
|
if (ParseUInt32(MetadataID) ||
|
|
ParseToken(lltok::equal, "expected '=' here") ||
|
|
ParseType(Ty, TyLoc) ||
|
|
ParseToken(lltok::exclaim, "Expected '!' here") ||
|
|
ParseToken(lltok::lbrace, "Expected '{' here") ||
|
|
ParseMDNodeVector(Elts, NULL) ||
|
|
ParseToken(lltok::rbrace, "expected end of metadata node"))
|
|
return true;
|
|
|
|
MDNode *Init = MDNode::get(Context, Elts);
|
|
|
|
// See if this was forward referenced, if so, handle it.
|
|
std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator
|
|
FI = ForwardRefMDNodes.find(MetadataID);
|
|
if (FI != ForwardRefMDNodes.end()) {
|
|
MDNode *Temp = FI->second.first;
|
|
Temp->replaceAllUsesWith(Init);
|
|
MDNode::deleteTemporary(Temp);
|
|
ForwardRefMDNodes.erase(FI);
|
|
|
|
assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work");
|
|
} else {
|
|
if (MetadataID >= NumberedMetadata.size())
|
|
NumberedMetadata.resize(MetadataID+1);
|
|
|
|
if (NumberedMetadata[MetadataID] != 0)
|
|
return TokError("Metadata id is already used");
|
|
NumberedMetadata[MetadataID] = Init;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// ParseAlias:
|
|
/// ::= GlobalVar '=' OptionalVisibility 'alias' OptionalLinkage Aliasee
|
|
/// Aliasee
|
|
/// ::= TypeAndValue
|
|
/// ::= 'bitcast' '(' TypeAndValue 'to' Type ')'
|
|
/// ::= 'getelementptr' 'inbounds'? '(' ... ')'
|
|
///
|
|
/// Everything through visibility has already been parsed.
|
|
///
|
|
bool LLParser::ParseAlias(const std::string &Name, LocTy NameLoc,
|
|
unsigned Visibility) {
|
|
assert(Lex.getKind() == lltok::kw_alias);
|
|
Lex.Lex();
|
|
unsigned Linkage;
|
|
LocTy LinkageLoc = Lex.getLoc();
|
|
if (ParseOptionalLinkage(Linkage))
|
|
return true;
|
|
|
|
if (Linkage != GlobalValue::ExternalLinkage &&
|
|
Linkage != GlobalValue::WeakAnyLinkage &&
|
|
Linkage != GlobalValue::WeakODRLinkage &&
|
|
Linkage != GlobalValue::InternalLinkage &&
|
|
Linkage != GlobalValue::PrivateLinkage &&
|
|
Linkage != GlobalValue::LinkerPrivateLinkage &&
|
|
Linkage != GlobalValue::LinkerPrivateWeakLinkage &&
|
|
Linkage != GlobalValue::LinkerPrivateWeakDefAutoLinkage)
|
|
return Error(LinkageLoc, "invalid linkage type for alias");
|
|
|
|
Constant *Aliasee;
|
|
LocTy AliaseeLoc = Lex.getLoc();
|
|
if (Lex.getKind() != lltok::kw_bitcast &&
|
|
Lex.getKind() != lltok::kw_getelementptr) {
|
|
if (ParseGlobalTypeAndValue(Aliasee)) return true;
|
|
} else {
|
|
// The bitcast dest type is not present, it is implied by the dest type.
|
|
ValID ID;
|
|
if (ParseValID(ID)) return true;
|
|
if (ID.Kind != ValID::t_Constant)
|
|
return Error(AliaseeLoc, "invalid aliasee");
|
|
Aliasee = ID.ConstantVal;
|
|
}
|
|
|
|
if (!Aliasee->getType()->isPointerTy())
|
|
return Error(AliaseeLoc, "alias must have pointer type");
|
|
|
|
// Okay, create the alias but do not insert it into the module yet.
|
|
GlobalAlias* GA = new GlobalAlias(Aliasee->getType(),
|
|
(GlobalValue::LinkageTypes)Linkage, Name,
|
|
Aliasee);
|
|
GA->setVisibility((GlobalValue::VisibilityTypes)Visibility);
|
|
|
|
// See if this value already exists in the symbol table. If so, it is either
|
|
// a redefinition or a definition of a forward reference.
|
|
if (GlobalValue *Val = M->getNamedValue(Name)) {
|
|
// See if this was a redefinition. If so, there is no entry in
|
|
// ForwardRefVals.
|
|
std::map<std::string, std::pair<GlobalValue*, LocTy> >::iterator
|
|
I = ForwardRefVals.find(Name);
|
|
if (I == ForwardRefVals.end())
|
|
return Error(NameLoc, "redefinition of global named '@" + Name + "'");
|
|
|
|
// Otherwise, this was a definition of forward ref. Verify that types
|
|
// agree.
|
|
if (Val->getType() != GA->getType())
|
|
return Error(NameLoc,
|
|
"forward reference and definition of alias have different types");
|
|
|
|
// If they agree, just RAUW the old value with the alias and remove the
|
|
// forward ref info.
|
|
Val->replaceAllUsesWith(GA);
|
|
Val->eraseFromParent();
|
|
ForwardRefVals.erase(I);
|
|
}
|
|
|
|
// Insert into the module, we know its name won't collide now.
|
|
M->getAliasList().push_back(GA);
|
|
assert(GA->getName() == Name && "Should not be a name conflict!");
|
|
|
|
return false;
|
|
}
|
|
|
|
/// ParseGlobal
|
|
/// ::= GlobalVar '=' OptionalLinkage OptionalVisibility OptionalThreadLocal
|
|
/// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
|
|
/// ::= OptionalLinkage OptionalVisibility OptionalThreadLocal
|
|
/// OptionalAddrSpace OptionalUnNammedAddr GlobalType Type Const
|
|
///
|
|
/// Everything through visibility has been parsed already.
|
|
///
|
|
bool LLParser::ParseGlobal(const std::string &Name, LocTy NameLoc,
|
|
unsigned Linkage, bool HasLinkage,
|
|
unsigned Visibility) {
|
|
unsigned AddrSpace;
|
|
bool ThreadLocal, IsConstant, UnnamedAddr;
|
|
LocTy UnnamedAddrLoc;
|
|
LocTy TyLoc;
|
|
|
|
Type *Ty = 0;
|
|
if (ParseOptionalToken(lltok::kw_thread_local, ThreadLocal) ||
|
|
ParseOptionalAddrSpace(AddrSpace) ||
|
|
ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
|
|
&UnnamedAddrLoc) ||
|
|
ParseGlobalType(IsConstant) ||
|
|
ParseType(Ty, TyLoc))
|
|
return true;
|
|
|
|
// If the linkage is specified and is external, then no initializer is
|
|
// present.
|
|
Constant *Init = 0;
|
|
if (!HasLinkage || (Linkage != GlobalValue::DLLImportLinkage &&
|
|
Linkage != GlobalValue::ExternalWeakLinkage &&
|
|
Linkage != GlobalValue::ExternalLinkage)) {
|
|
if (ParseGlobalValue(Ty, Init))
|
|
return true;
|
|
}
|
|
|
|
if (Ty->isFunctionTy() || Ty->isLabelTy())
|
|
return Error(TyLoc, "invalid type for global variable");
|
|
|
|
GlobalVariable *GV = 0;
|
|
|
|
// See if the global was forward referenced, if so, use the global.
|
|
if (!Name.empty()) {
|
|
if (GlobalValue *GVal = M->getNamedValue(Name)) {
|
|
if (!ForwardRefVals.erase(Name) || !isa<GlobalValue>(GVal))
|
|
return Error(NameLoc, "redefinition of global '@" + Name + "'");
|
|
GV = cast<GlobalVariable>(GVal);
|
|
}
|
|
} else {
|
|
std::map<unsigned, std::pair<GlobalValue*, LocTy> >::iterator
|
|
I = ForwardRefValIDs.find(NumberedVals.size());
|
|
if (I != ForwardRefValIDs.end()) {
|
|
GV = cast<GlobalVariable>(I->second.first);
|
|
ForwardRefValIDs.erase(I);
|
|
}
|
|
}
|
|
|
|
if (GV == 0) {
|
|
GV = new GlobalVariable(*M, Ty, false, GlobalValue::ExternalLinkage, 0,
|
|
Name, 0, false, AddrSpace);
|
|
} else {
|
|
if (GV->getType()->getElementType() != Ty)
|
|
return Error(TyLoc,
|
|
"forward reference and definition of global have different types");
|
|
|
|
// 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);
|
|
GV->setUnnamedAddr(UnnamedAddr);
|
|
|
|
// 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 '" +
|
|
getTypeString(Val->getType()) + "'");
|
|
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(*M, PTy->getElementType(), false,
|
|
GlobalValue::ExternalWeakLinkage, 0, Name);
|
|
|
|
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, "'@" + Twine(ID) + "' defined with type '" +
|
|
getTypeString(Val->getType()) + "'");
|
|
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, "", M);
|
|
else
|
|
FwdVal = new GlobalVariable(*M, PTy->getElementType(), false,
|
|
GlobalValue::ExternalWeakLinkage, 0, "");
|
|
|
|
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()) {
|
|
default: // End of attributes.
|
|
if (AttrKind != 2 && (Attrs & Attribute::FunctionOnly))
|
|
return Error(AttrLoc, "invalid use of function-only attribute");
|
|
|
|
// As a hack, we allow "align 2" on functions as a synonym for
|
|
// "alignstack 2".
|
|
if (AttrKind == 2 &&
|
|
(Attrs & ~(Attribute::FunctionOnly | Attribute::Alignment)))
|
|
return Error(AttrLoc, "invalid use of attribute on a function");
|
|
|
|
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_uwtable: Attrs |= Attribute::UWTable; 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_inlinehint: Attrs |= Attribute::InlineHint; 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_noredzone: Attrs |= Attribute::NoRedZone; break;
|
|
case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
|
|
case lltok::kw_naked: Attrs |= Attribute::Naked; break;
|
|
case lltok::kw_hotpatch: Attrs |= Attribute::Hotpatch; break;
|
|
case lltok::kw_nonlazybind: Attrs |= Attribute::NonLazyBind; break;
|
|
|
|
case lltok::kw_alignstack: {
|
|
unsigned Alignment;
|
|
if (ParseOptionalStackAlignment(Alignment))
|
|
return true;
|
|
Attrs |= Attribute::constructStackAlignmentFromInt(Alignment);
|
|
continue;
|
|
}
|
|
|
|
case lltok::kw_align: {
|
|
unsigned Alignment;
|
|
if (ParseOptionalAlignment(Alignment))
|
|
return true;
|
|
Attrs |= Attribute::constructAlignmentFromInt(Alignment);
|
|
continue;
|
|
}
|
|
|
|
}
|
|
Lex.Lex();
|
|
}
|
|
}
|
|
|
|
/// ParseOptionalLinkage
|
|
/// ::= /*empty*/
|
|
/// ::= 'private'
|
|
/// ::= 'linker_private'
|
|
/// ::= 'linker_private_weak'
|
|
/// ::= 'linker_private_weak_def_auto'
|
|
/// ::= 'internal'
|
|
/// ::= 'weak'
|
|
/// ::= 'weak_odr'
|
|
/// ::= 'linkonce'
|
|
/// ::= 'linkonce_odr'
|
|
/// ::= 'available_externally'
|
|
/// ::= '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_private: Res = GlobalValue::PrivateLinkage; break;
|
|
case lltok::kw_linker_private: Res = GlobalValue::LinkerPrivateLinkage; break;
|
|
case lltok::kw_linker_private_weak:
|
|
Res = GlobalValue::LinkerPrivateWeakLinkage;
|
|
break;
|
|
case lltok::kw_linker_private_weak_def_auto:
|
|
Res = GlobalValue::LinkerPrivateWeakDefAutoLinkage;
|
|
break;
|
|
case lltok::kw_internal: Res = GlobalValue::InternalLinkage; break;
|
|
case lltok::kw_weak: Res = GlobalValue::WeakAnyLinkage; break;
|
|
case lltok::kw_weak_odr: Res = GlobalValue::WeakODRLinkage; break;
|
|
case lltok::kw_linkonce: Res = GlobalValue::LinkOnceAnyLinkage; break;
|
|
case lltok::kw_linkonce_odr: Res = GlobalValue::LinkOnceODRLinkage; break;
|
|
case lltok::kw_available_externally:
|
|
Res = GlobalValue::AvailableExternallyLinkage;
|
|
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'
|
|
/// ::= 'x86_thiscallcc'
|
|
/// ::= 'arm_apcscc'
|
|
/// ::= 'arm_aapcscc'
|
|
/// ::= 'arm_aapcs_vfpcc'
|
|
/// ::= 'msp430_intrcc'
|
|
/// ::= 'ptx_kernel'
|
|
/// ::= 'ptx_device'
|
|
/// ::= 'cc' UINT
|
|
///
|
|
bool LLParser::ParseOptionalCallingConv(CallingConv::ID &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_x86_thiscallcc: CC = CallingConv::X86_ThisCall; break;
|
|
case lltok::kw_arm_apcscc: CC = CallingConv::ARM_APCS; break;
|
|
case lltok::kw_arm_aapcscc: CC = CallingConv::ARM_AAPCS; break;
|
|
case lltok::kw_arm_aapcs_vfpcc:CC = CallingConv::ARM_AAPCS_VFP; break;
|
|
case lltok::kw_msp430_intrcc: CC = CallingConv::MSP430_INTR; break;
|
|
case lltok::kw_ptx_kernel: CC = CallingConv::PTX_Kernel; break;
|
|
case lltok::kw_ptx_device: CC = CallingConv::PTX_Device; break;
|
|
case lltok::kw_cc: {
|
|
unsigned ArbitraryCC;
|
|
Lex.Lex();
|
|
if (ParseUInt32(ArbitraryCC)) {
|
|
return true;
|
|
} else
|
|
CC = static_cast<CallingConv::ID>(ArbitraryCC);
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
|
|
Lex.Lex();
|
|
return false;
|
|
}
|
|
|
|
/// ParseInstructionMetadata
|
|
/// ::= !dbg !42 (',' !dbg !57)*
|
|
bool LLParser::ParseInstructionMetadata(Instruction *Inst,
|
|
PerFunctionState *PFS) {
|
|
do {
|
|
if (Lex.getKind() != lltok::MetadataVar)
|
|
return TokError("expected metadata after comma");
|
|
|
|
std::string Name = Lex.getStrVal();
|
|
unsigned MDK = M->getMDKindID(Name.c_str());
|
|
Lex.Lex();
|
|
|
|
MDNode *Node;
|
|
SMLoc Loc = Lex.getLoc();
|
|
|
|
if (ParseToken(lltok::exclaim, "expected '!' here"))
|
|
return true;
|
|
|
|
// This code is similar to that of ParseMetadataValue, however it needs to
|
|
// have special-case code for a forward reference; see the comments on
|
|
// ForwardRefInstMetadata for details. Also, MDStrings are not supported
|
|
// at the top level here.
|
|
if (Lex.getKind() == lltok::lbrace) {
|
|
ValID ID;
|
|
if (ParseMetadataListValue(ID, PFS))
|
|
return true;
|
|
assert(ID.Kind == ValID::t_MDNode);
|
|
Inst->setMetadata(MDK, ID.MDNodeVal);
|
|
} else {
|
|
unsigned NodeID = 0;
|
|
if (ParseMDNodeID(Node, NodeID))
|
|
return true;
|
|
if (Node) {
|
|
// If we got the node, add it to the instruction.
|
|
Inst->setMetadata(MDK, Node);
|
|
} else {
|
|
MDRef R = { Loc, MDK, NodeID };
|
|
// Otherwise, remember that this should be resolved later.
|
|
ForwardRefInstMetadata[Inst].push_back(R);
|
|
}
|
|
}
|
|
|
|
// If this is the end of the list, we're done.
|
|
} while (EatIfPresent(lltok::comma));
|
|
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");
|
|
if (Alignment > Value::MaximumAlignment)
|
|
return Error(AlignLoc, "huge alignments are not supported yet");
|
|
return false;
|
|
}
|
|
|
|
/// ParseOptionalCommaAlign
|
|
/// ::=
|
|
/// ::= ',' align 4
|
|
///
|
|
/// This returns with AteExtraComma set to true if it ate an excess comma at the
|
|
/// end.
|
|
bool LLParser::ParseOptionalCommaAlign(unsigned &Alignment,
|
|
bool &AteExtraComma) {
|
|
AteExtraComma = false;
|
|
while (EatIfPresent(lltok::comma)) {
|
|
// Metadata at the end is an early exit.
|
|
if (Lex.getKind() == lltok::MetadataVar) {
|
|
AteExtraComma = true;
|
|
return false;
|
|
}
|
|
|
|
if (Lex.getKind() != lltok::kw_align)
|
|
return Error(Lex.getLoc(), "expected metadata or 'align'");
|
|
|
|
if (ParseOptionalAlignment(Alignment)) return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/// ParseOptionalStackAlignment
|
|
/// ::= /* empty */
|
|
/// ::= 'alignstack' '(' 4 ')'
|
|
bool LLParser::ParseOptionalStackAlignment(unsigned &Alignment) {
|
|
Alignment = 0;
|
|
if (!EatIfPresent(lltok::kw_alignstack))
|
|
return false;
|
|
LocTy ParenLoc = Lex.getLoc();
|
|
if (!EatIfPresent(lltok::lparen))
|
|
return Error(ParenLoc, "expected '('");
|
|
LocTy AlignLoc = Lex.getLoc();
|
|
if (ParseUInt32(Alignment)) return true;
|
|
ParenLoc = Lex.getLoc();
|
|
if (!EatIfPresent(lltok::rparen))
|
|
return Error(ParenLoc, "expected ')'");
|
|
if (!isPowerOf2_32(Alignment))
|
|
return Error(AlignLoc, "stack alignment is not a power of two");
|
|
return false;
|
|
}
|
|
|
|
/// ParseIndexList - This parses the index list for an insert/extractvalue
|
|
/// instruction. This sets AteExtraComma in the case where we eat an extra
|
|
/// comma at the end of the line and find that it is followed by metadata.
|
|
/// Clients that don't allow metadata can call the version of this function that
|
|
/// only takes one argument.
|
|
///
|
|
/// ParseIndexList
|
|
/// ::= (',' uint32)+
|
|
///
|
|
bool LLParser::ParseIndexList(SmallVectorImpl<unsigned> &Indices,
|
|
bool &AteExtraComma) {
|
|
AteExtraComma = false;
|
|
|
|
if (Lex.getKind() != lltok::comma)
|
|
return TokError("expected ',' as start of index list");
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
if (Lex.getKind() == lltok::MetadataVar) {
|
|
AteExtraComma = true;
|
|
return false;
|
|
}
|
|
unsigned Idx = 0;
|
|
if (ParseUInt32(Idx)) return true;
|
|
Indices.push_back(Idx);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Type Parsing.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseType - Parse a type.
|
|
bool LLParser::ParseType(Type *&Result, bool AllowVoid) {
|
|
SMLoc TypeLoc = Lex.getLoc();
|
|
switch (Lex.getKind()) {
|
|
default:
|
|
return TokError("expected type");
|
|
case lltok::Type:
|
|
// Type ::= 'float' | 'void' (etc)
|
|
Result = Lex.getTyVal();
|
|
Lex.Lex();
|
|
break;
|
|
case lltok::lbrace:
|
|
// Type ::= StructType
|
|
if (ParseAnonStructType(Result, false))
|
|
return true;
|
|
break;
|
|
case lltok::lsquare:
|
|
// Type ::= '[' ... ']'
|
|
Lex.Lex(); // eat the lsquare.
|
|
if (ParseArrayVectorType(Result, false))
|
|
return true;
|
|
break;
|
|
case lltok::less: // Either vector or packed struct.
|
|
// Type ::= '<' ... '>'
|
|
Lex.Lex();
|
|
if (Lex.getKind() == lltok::lbrace) {
|
|
if (ParseAnonStructType(Result, true) ||
|
|
ParseToken(lltok::greater, "expected '>' at end of packed struct"))
|
|
return true;
|
|
} else if (ParseArrayVectorType(Result, true))
|
|
return true;
|
|
break;
|
|
case lltok::LocalVar: {
|
|
// Type ::= %foo
|
|
std::pair<Type*, LocTy> &Entry = NamedTypes[Lex.getStrVal()];
|
|
|
|
// If the type hasn't been defined yet, create a forward definition and
|
|
// remember where that forward def'n was seen (in case it never is defined).
|
|
if (Entry.first == 0) {
|
|
Entry.first = StructType::createNamed(Context, Lex.getStrVal());
|
|
Entry.second = Lex.getLoc();
|
|
}
|
|
Result = Entry.first;
|
|
Lex.Lex();
|
|
break;
|
|
}
|
|
|
|
case lltok::LocalVarID: {
|
|
// Type ::= %4
|
|
if (Lex.getUIntVal() >= NumberedTypes.size())
|
|
NumberedTypes.resize(Lex.getUIntVal()+1);
|
|
std::pair<Type*, LocTy> &Entry = NumberedTypes[Lex.getUIntVal()];
|
|
|
|
// If the type hasn't been defined yet, create a forward definition and
|
|
// remember where that forward def'n was seen (in case it never is defined).
|
|
if (Entry.first == 0) {
|
|
Entry.first = StructType::createNamed(Context, "");
|
|
Entry.second = Lex.getLoc();
|
|
}
|
|
Result = Entry.first;
|
|
Lex.Lex();
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Parse the type suffixes.
|
|
while (1) {
|
|
switch (Lex.getKind()) {
|
|
// End of type.
|
|
default:
|
|
if (!AllowVoid && Result->isVoidTy())
|
|
return Error(TypeLoc, "void type only allowed for function results");
|
|
return false;
|
|
|
|
// Type ::= Type '*'
|
|
case lltok::star:
|
|
if (Result->isLabelTy())
|
|
return TokError("basic block pointers are invalid");
|
|
if (Result->isVoidTy())
|
|
return TokError("pointers to void are invalid - use i8* instead");
|
|
if (!PointerType::isValidElementType(Result))
|
|
return TokError("pointer to this type is invalid");
|
|
Result = PointerType::getUnqual(Result);
|
|
Lex.Lex();
|
|
break;
|
|
|
|
// Type ::= Type 'addrspace' '(' uint32 ')' '*'
|
|
case lltok::kw_addrspace: {
|
|
if (Result->isLabelTy())
|
|
return TokError("basic block pointers are invalid");
|
|
if (Result->isVoidTy())
|
|
return TokError("pointers to void are invalid; use i8* instead");
|
|
if (!PointerType::isValidElementType(Result))
|
|
return TokError("pointer to this type is invalid");
|
|
unsigned AddrSpace;
|
|
if (ParseOptionalAddrSpace(AddrSpace) ||
|
|
ParseToken(lltok::star, "expected '*' in address space"))
|
|
return true;
|
|
|
|
Result = PointerType::get(Result, 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;
|
|
Type *ArgTy = 0;
|
|
unsigned ArgAttrs1 = Attribute::None;
|
|
unsigned ArgAttrs2 = Attribute::None;
|
|
Value *V;
|
|
if (ParseType(ArgTy, ArgLoc))
|
|
return true;
|
|
|
|
// Otherwise, handle normal operands.
|
|
if (ParseOptionalAttrs(ArgAttrs1, 0) || ParseValue(ArgTy, V, PFS))
|
|
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.
|
|
/// ::= '(' ArgTypeListI ')'
|
|
/// ArgTypeListI
|
|
/// ::= /*empty*/
|
|
/// ::= '...'
|
|
/// ::= ArgTypeList ',' '...'
|
|
/// ::= ArgType (',' ArgType)*
|
|
///
|
|
bool LLParser::ParseArgumentList(SmallVectorImpl<ArgInfo> &ArgList,
|
|
bool &isVarArg){
|
|
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();
|
|
Type *ArgTy = 0;
|
|
unsigned Attrs;
|
|
std::string Name;
|
|
|
|
if (ParseType(ArgTy) ||
|
|
ParseOptionalAttrs(Attrs, 0)) return true;
|
|
|
|
if (ArgTy->isVoidTy())
|
|
return Error(TypeLoc, "argument can not have void type");
|
|
|
|
if (Lex.getKind() == lltok::LocalVar) {
|
|
Name = Lex.getStrVal();
|
|
Lex.Lex();
|
|
}
|
|
|
|
if (!FunctionType::isValidArgumentType(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 (ParseType(ArgTy) || ParseOptionalAttrs(Attrs, 0)) return true;
|
|
|
|
if (ArgTy->isVoidTy())
|
|
return Error(TypeLoc, "argument can not have void type");
|
|
|
|
if (Lex.getKind() == lltok::LocalVar) {
|
|
Name = Lex.getStrVal();
|
|
Lex.Lex();
|
|
} else {
|
|
Name = "";
|
|
}
|
|
|
|
if (!ArgTy->isFirstClassType())
|
|
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(Type *&Result) {
|
|
assert(Lex.getKind() == lltok::lparen);
|
|
|
|
if (!FunctionType::isValidReturnType(Result))
|
|
return TokError("invalid function return type");
|
|
|
|
SmallVector<ArgInfo, 8> ArgList;
|
|
bool isVarArg;
|
|
if (ParseArgumentList(ArgList, isVarArg))
|
|
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)
|
|
return Error(ArgList[i].Loc,
|
|
"argument attributes invalid in function type");
|
|
}
|
|
|
|
SmallVector<Type*, 16> ArgListTy;
|
|
for (unsigned i = 0, e = ArgList.size(); i != e; ++i)
|
|
ArgListTy.push_back(ArgList[i].Ty);
|
|
|
|
Result = FunctionType::get(Result, ArgListTy, isVarArg);
|
|
return false;
|
|
}
|
|
|
|
/// ParseAnonStructType - Parse an anonymous struct type, which is inlined into
|
|
/// other structs.
|
|
bool LLParser::ParseAnonStructType(Type *&Result, bool Packed) {
|
|
SmallVector<Type*, 8> Elts;
|
|
if (ParseStructBody(Elts)) return true;
|
|
|
|
Result = StructType::get(Context, Elts, Packed);
|
|
return false;
|
|
}
|
|
|
|
/// ParseStructDefinition - Parse a struct in a 'type' definition.
|
|
bool LLParser::ParseStructDefinition(SMLoc TypeLoc, StringRef Name,
|
|
std::pair<Type*, LocTy> &Entry,
|
|
Type *&ResultTy) {
|
|
// If the type was already defined, diagnose the redefinition.
|
|
if (Entry.first && !Entry.second.isValid())
|
|
return Error(TypeLoc, "redefinition of type");
|
|
|
|
// If we have opaque, just return without filling in the definition for the
|
|
// struct. This counts as a definition as far as the .ll file goes.
|
|
if (EatIfPresent(lltok::kw_opaque)) {
|
|
// This type is being defined, so clear the location to indicate this.
|
|
Entry.second = SMLoc();
|
|
|
|
// If this type number has never been uttered, create it.
|
|
if (Entry.first == 0)
|
|
Entry.first = StructType::createNamed(Context, Name);
|
|
ResultTy = Entry.first;
|
|
return false;
|
|
}
|
|
|
|
// If the type starts with '<', then it is either a packed struct or a vector.
|
|
bool isPacked = EatIfPresent(lltok::less);
|
|
|
|
// If we don't have a struct, then we have a random type alias, which we
|
|
// accept for compatibility with old files. These types are not allowed to be
|
|
// forward referenced and not allowed to be recursive.
|
|
if (Lex.getKind() != lltok::lbrace) {
|
|
if (Entry.first)
|
|
return Error(TypeLoc, "forward references to non-struct type");
|
|
|
|
ResultTy = 0;
|
|
if (isPacked)
|
|
return ParseArrayVectorType(ResultTy, true);
|
|
return ParseType(ResultTy);
|
|
}
|
|
|
|
// This type is being defined, so clear the location to indicate this.
|
|
Entry.second = SMLoc();
|
|
|
|
// If this type number has never been uttered, create it.
|
|
if (Entry.first == 0)
|
|
Entry.first = StructType::createNamed(Context, Name);
|
|
|
|
StructType *STy = cast<StructType>(Entry.first);
|
|
|
|
SmallVector<Type*, 8> Body;
|
|
if (ParseStructBody(Body) ||
|
|
(isPacked && ParseToken(lltok::greater, "expected '>' in packed struct")))
|
|
return true;
|
|
|
|
STy->setBody(Body, isPacked);
|
|
ResultTy = STy;
|
|
return false;
|
|
}
|
|
|
|
|
|
/// ParseStructType: Handles packed and unpacked types. </> parsed elsewhere.
|
|
/// StructType
|
|
/// ::= '{' '}'
|
|
/// ::= '{' Type (',' Type)* '}'
|
|
/// ::= '<' '{' '}' '>'
|
|
/// ::= '<' '{' Type (',' Type)* '}' '>'
|
|
bool LLParser::ParseStructBody(SmallVectorImpl<Type*> &Body) {
|
|
assert(Lex.getKind() == lltok::lbrace);
|
|
Lex.Lex(); // Consume the '{'
|
|
|
|
// Handle the empty struct.
|
|
if (EatIfPresent(lltok::rbrace))
|
|
return false;
|
|
|
|
LocTy EltTyLoc = Lex.getLoc();
|
|
Type *Ty = 0;
|
|
if (ParseType(Ty)) return true;
|
|
Body.push_back(Ty);
|
|
|
|
if (!StructType::isValidElementType(Ty))
|
|
return Error(EltTyLoc, "invalid element type for struct");
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
EltTyLoc = Lex.getLoc();
|
|
if (ParseType(Ty)) return true;
|
|
|
|
if (!StructType::isValidElementType(Ty))
|
|
return Error(EltTyLoc, "invalid element type for struct");
|
|
|
|
Body.push_back(Ty);
|
|
}
|
|
|
|
return ParseToken(lltok::rbrace, "expected '}' at end of struct");
|
|
}
|
|
|
|
/// ParseArrayVectorType - Parse an array or vector type, assuming the first
|
|
/// token has already been consumed.
|
|
/// Type
|
|
/// ::= '[' APSINTVAL 'x' Types ']'
|
|
/// ::= '<' APSINTVAL 'x' Types '>'
|
|
bool LLParser::ParseArrayVectorType(Type *&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();
|
|
Type *EltTy = 0;
|
|
if (ParseType(EltTy)) return true;
|
|
|
|
if (ParseToken(isVector ? lltok::greater : lltok::rsquare,
|
|
"expected end of sequential type"))
|
|
return true;
|
|
|
|
if (isVector) {
|
|
if (Size == 0)
|
|
return Error(SizeLoc, "zero element vector is illegal");
|
|
if ((unsigned)Size != Size)
|
|
return Error(SizeLoc, "size too large for vector");
|
|
if (!VectorType::isValidElementType(EltTy))
|
|
return Error(TypeLoc, "vector element type must be fp or integer");
|
|
Result = VectorType::get(EltTy, unsigned(Size));
|
|
} else {
|
|
if (!ArrayType::isValidElementType(EltTy))
|
|
return Error(TypeLoc, "invalid array element type");
|
|
Result = ArrayType::get(EltTy, Size);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Function Semantic Analysis.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
LLParser::PerFunctionState::PerFunctionState(LLParser &p, Function &f,
|
|
int functionNumber)
|
|
: P(p), F(f), FunctionNumber(functionNumber) {
|
|
|
|
// 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::FinishFunction() {
|
|
// Check to see if someone took the address of labels in this block.
|
|
if (!P.ForwardRefBlockAddresses.empty()) {
|
|
ValID FunctionID;
|
|
if (!F.getName().empty()) {
|
|
FunctionID.Kind = ValID::t_GlobalName;
|
|
FunctionID.StrVal = F.getName();
|
|
} else {
|
|
FunctionID.Kind = ValID::t_GlobalID;
|
|
FunctionID.UIntVal = FunctionNumber;
|
|
}
|
|
|
|
std::map<ValID, std::vector<std::pair<ValID, GlobalValue*> > >::iterator
|
|
FRBAI = P.ForwardRefBlockAddresses.find(FunctionID);
|
|
if (FRBAI != P.ForwardRefBlockAddresses.end()) {
|
|
// Resolve all these references.
|
|
if (P.ResolveForwardRefBlockAddresses(&F, FRBAI->second, this))
|
|
return true;
|
|
|
|
P.ForwardRefBlockAddresses.erase(FRBAI);
|
|
}
|
|
}
|
|
|
|
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 '%" +
|
|
Twine(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->isLabelTy())
|
|
P.Error(Loc, "'%" + Name + "' is not a basic block");
|
|
else
|
|
P.Error(Loc, "'%" + Name + "' defined with type '" +
|
|
getTypeString(Val->getType()) + "'");
|
|
return 0;
|
|
}
|
|
|
|
// Don't make placeholders with invalid type.
|
|
if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
|
|
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->isLabelTy())
|
|
FwdVal = BasicBlock::Create(F.getContext(), 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->isLabelTy())
|
|
P.Error(Loc, "'%" + Twine(ID) + "' is not a basic block");
|
|
else
|
|
P.Error(Loc, "'%" + Twine(ID) + "' defined with type '" +
|
|
getTypeString(Val->getType()) + "'");
|
|
return 0;
|
|
}
|
|
|
|
if (!Ty->isFirstClassType() && !Ty->isLabelTy()) {
|
|
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->isLabelTy())
|
|
FwdVal = BasicBlock::Create(F.getContext(), "", &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()->isVoidTy()) {
|
|
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 '%" +
|
|
Twine(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 '" +
|
|
getTypeString(FI->second.first->getType()) + "'");
|
|
FI->second.first->replaceAllUsesWith(Inst);
|
|
delete FI->second.first;
|
|
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 '" +
|
|
getTypeString(FI->second.first->getType()) + "'");
|
|
FI->second.first->replaceAllUsesWith(Inst);
|
|
delete FI->second.first;
|
|
ForwardRefVals.erase(FI);
|
|
}
|
|
|
|
// Set the name on the instruction.
|
|
Inst->setName(NameStr);
|
|
|
|
if (Inst->getName() != 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::getLabelTy(F.getContext()), Loc));
|
|
}
|
|
|
|
BasicBlock *LLParser::PerFunctionState::GetBB(unsigned ID, LocTy Loc) {
|
|
return cast_or_null<BasicBlock>(GetVal(ID,
|
|
Type::getLabelTy(F.getContext()), 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. PFS is used to convert function-local operands of metadata (since
|
|
/// metadata operands are not just parsed here but also converted to values).
|
|
/// PFS can be null when we are not parsing metadata values inside a function.
|
|
bool LLParser::ParseValID(ValID &ID, PerFunctionState *PFS) {
|
|
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
|
|
ID.StrVal = Lex.getStrVal();
|
|
ID.Kind = ValID::t_LocalName;
|
|
break;
|
|
case lltok::exclaim: // !42, !{...}, or !"foo"
|
|
return ParseMetadataValue(ID, PFS);
|
|
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(Context);
|
|
ID.Kind = ValID::t_Constant;
|
|
break;
|
|
case lltok::kw_false:
|
|
ID.ConstantVal = ConstantInt::getFalse(Context);
|
|
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.ConstantStructElts = new Constant*[Elts.size()];
|
|
ID.UIntVal = Elts.size();
|
|
memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
|
|
ID.Kind = ValID::t_ConstantStruct;
|
|
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.ConstantStructElts = new Constant*[Elts.size()];
|
|
memcpy(ID.ConstantStructElts, Elts.data(), Elts.size()*sizeof(Elts[0]));
|
|
ID.UIntVal = Elts.size();
|
|
ID.Kind = ValID::t_PackedConstantStruct;
|
|
return false;
|
|
}
|
|
|
|
if (Elts.empty())
|
|
return Error(ID.Loc, "constant vector must not be empty");
|
|
|
|
if (!Elts[0]->getType()->isIntegerTy() &&
|
|
!Elts[0]->getType()->isFloatingPointTy())
|
|
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 #" + Twine(i) +
|
|
" is not of type '" + getTypeString(Elts[0]->getType()));
|
|
|
|
ID.ConstantVal = ConstantVector::get(Elts);
|
|
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: " +
|
|
getTypeString(Elts[0]->getType()));
|
|
|
|
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 #" + Twine(i) +
|
|
" is not of type '" + getTypeString(Elts[0]->getType()));
|
|
}
|
|
|
|
ID.ConstantVal = ConstantArray::get(ATy, Elts);
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::kw_c: // c "foo"
|
|
Lex.Lex();
|
|
ID.ConstantVal = ConstantArray::get(Context, 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? AlignStack? STRINGCONSTANT ',' STRINGCONSTANT
|
|
bool HasSideEffect, AlignStack;
|
|
Lex.Lex();
|
|
if (ParseOptionalToken(lltok::kw_sideeffect, HasSideEffect) ||
|
|
ParseOptionalToken(lltok::kw_alignstack, AlignStack) ||
|
|
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 = unsigned(HasSideEffect) | (unsigned(AlignStack)<<1);
|
|
ID.Kind = ValID::t_InlineAsm;
|
|
return false;
|
|
}
|
|
|
|
case lltok::kw_blockaddress: {
|
|
// ValID ::= 'blockaddress' '(' @foo ',' %bar ')'
|
|
Lex.Lex();
|
|
|
|
ValID Fn, Label;
|
|
LocTy FnLoc, LabelLoc;
|
|
|
|
if (ParseToken(lltok::lparen, "expected '(' in block address expression") ||
|
|
ParseValID(Fn) ||
|
|
ParseToken(lltok::comma, "expected comma in block address expression")||
|
|
ParseValID(Label) ||
|
|
ParseToken(lltok::rparen, "expected ')' in block address expression"))
|
|
return true;
|
|
|
|
if (Fn.Kind != ValID::t_GlobalID && Fn.Kind != ValID::t_GlobalName)
|
|
return Error(Fn.Loc, "expected function name in blockaddress");
|
|
if (Label.Kind != ValID::t_LocalID && Label.Kind != ValID::t_LocalName)
|
|
return Error(Label.Loc, "expected basic block name in blockaddress");
|
|
|
|
// Make a global variable as a placeholder for this reference.
|
|
GlobalVariable *FwdRef = new GlobalVariable(*M, Type::getInt8Ty(Context),
|
|
false, GlobalValue::InternalLinkage,
|
|
0, "");
|
|
ForwardRefBlockAddresses[Fn].push_back(std::make_pair(Label, FwdRef));
|
|
ID.ConstantVal = FwdRef;
|
|
ID.Kind = ValID::t_Constant;
|
|
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();
|
|
Type *DestTy = 0;
|
|
Constant *SrcVal;
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::lparen, "expected '(' after constantexpr cast") ||
|
|
ParseGlobalTypeAndValue(SrcVal) ||
|
|
ParseToken(lltok::kw_to, "expected 'to' in 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 '" +
|
|
getTypeString(SrcVal->getType()) + "' to '" +
|
|
getTypeString(DestTy) + "'");
|
|
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 (!Val->getType()->isAggregateType())
|
|
return Error(ID.Loc, "extractvalue operand must be aggregate type");
|
|
if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
|
|
return Error(ID.Loc, "invalid indices for extractvalue");
|
|
ID.ConstantVal = ConstantExpr::getExtractValue(Val, Indices);
|
|
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 (!Val0->getType()->isAggregateType())
|
|
return Error(ID.Loc, "insertvalue operand must be aggregate type");
|
|
if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
|
|
return Error(ID.Loc, "invalid indices for insertvalue");
|
|
ID.ConstantVal = ConstantExpr::getInsertValue(Val0, Val1, Indices);
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
case lltok::kw_icmp:
|
|
case lltok::kw_fcmp: {
|
|
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()->isFPOrFPVectorTy())
|
|
return Error(ID.Loc, "fcmp requires floating point operands");
|
|
ID.ConstantVal = ConstantExpr::getFCmp(Pred, Val0, Val1);
|
|
} else {
|
|
assert(Opc == Instruction::ICmp && "Unexpected opcode for CmpInst!");
|
|
if (!Val0->getType()->isIntOrIntVectorTy() &&
|
|
!Val0->getType()->isPointerTy())
|
|
return Error(ID.Loc, "icmp requires pointer or integer operands");
|
|
ID.ConstantVal = ConstantExpr::getICmp(Pred, Val0, Val1);
|
|
}
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
|
|
// Binary Operators.
|
|
case lltok::kw_add:
|
|
case lltok::kw_fadd:
|
|
case lltok::kw_sub:
|
|
case lltok::kw_fsub:
|
|
case lltok::kw_mul:
|
|
case lltok::kw_fmul:
|
|
case lltok::kw_udiv:
|
|
case lltok::kw_sdiv:
|
|
case lltok::kw_fdiv:
|
|
case lltok::kw_urem:
|
|
case lltok::kw_srem:
|
|
case lltok::kw_frem:
|
|
case lltok::kw_shl:
|
|
case lltok::kw_lshr:
|
|
case lltok::kw_ashr: {
|
|
bool NUW = false;
|
|
bool NSW = false;
|
|
bool Exact = false;
|
|
unsigned Opc = Lex.getUIntVal();
|
|
Constant *Val0, *Val1;
|
|
Lex.Lex();
|
|
LocTy ModifierLoc = Lex.getLoc();
|
|
if (Opc == Instruction::Add || Opc == Instruction::Sub ||
|
|
Opc == Instruction::Mul || Opc == Instruction::Shl) {
|
|
if (EatIfPresent(lltok::kw_nuw))
|
|
NUW = true;
|
|
if (EatIfPresent(lltok::kw_nsw)) {
|
|
NSW = true;
|
|
if (EatIfPresent(lltok::kw_nuw))
|
|
NUW = true;
|
|
}
|
|
} else if (Opc == Instruction::SDiv || Opc == Instruction::UDiv ||
|
|
Opc == Instruction::LShr || Opc == Instruction::AShr) {
|
|
if (EatIfPresent(lltok::kw_exact))
|
|
Exact = true;
|
|
}
|
|
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()->isIntOrIntVectorTy()) {
|
|
if (NUW)
|
|
return Error(ModifierLoc, "nuw only applies to integer operations");
|
|
if (NSW)
|
|
return Error(ModifierLoc, "nsw only applies to integer operations");
|
|
}
|
|
// Check that the type is valid for the operator.
|
|
switch (Opc) {
|
|
case Instruction::Add:
|
|
case Instruction::Sub:
|
|
case Instruction::Mul:
|
|
case Instruction::UDiv:
|
|
case Instruction::SDiv:
|
|
case Instruction::URem:
|
|
case Instruction::SRem:
|
|
case Instruction::Shl:
|
|
case Instruction::AShr:
|
|
case Instruction::LShr:
|
|
if (!Val0->getType()->isIntOrIntVectorTy())
|
|
return Error(ID.Loc, "constexpr requires integer operands");
|
|
break;
|
|
case Instruction::FAdd:
|
|
case Instruction::FSub:
|
|
case Instruction::FMul:
|
|
case Instruction::FDiv:
|
|
case Instruction::FRem:
|
|
if (!Val0->getType()->isFPOrFPVectorTy())
|
|
return Error(ID.Loc, "constexpr requires fp operands");
|
|
break;
|
|
default: llvm_unreachable("Unknown binary operator!");
|
|
}
|
|
unsigned Flags = 0;
|
|
if (NUW) Flags |= OverflowingBinaryOperator::NoUnsignedWrap;
|
|
if (NSW) Flags |= OverflowingBinaryOperator::NoSignedWrap;
|
|
if (Exact) Flags |= PossiblyExactOperator::IsExact;
|
|
Constant *C = ConstantExpr::get(Opc, Val0, Val1, Flags);
|
|
ID.ConstantVal = C;
|
|
ID.Kind = ValID::t_Constant;
|
|
return false;
|
|
}
|
|
|
|
// Logical Operations
|
|
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()->isIntOrIntVectorTy())
|
|
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;
|
|
bool InBounds = false;
|
|
Lex.Lex();
|
|
if (Opc == Instruction::GetElementPtr)
|
|
InBounds = EatIfPresent(lltok::kw_inbounds);
|
|
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 || !Elts[0]->getType()->isPointerTy())
|
|
return Error(ID.Loc, "getelementptr requires pointer operand");
|
|
|
|
if (!GetElementPtrInst::getIndexedType(Elts[0]->getType(),
|
|
(Value**)(Elts.data() + 1),
|
|
Elts.size() - 1))
|
|
return Error(ID.Loc, "invalid indices for getelementptr");
|
|
ID.ConstantVal = InBounds ?
|
|
ConstantExpr::getInBoundsGetElementPtr(Elts[0],
|
|
Elts.data() + 1,
|
|
Elts.size() - 1) :
|
|
ConstantExpr::getGetElementPtr(Elts[0],
|
|
Elts.data() + 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 *&C) {
|
|
C = 0;
|
|
ValID ID;
|
|
Value *V = NULL;
|
|
bool Parsed = ParseValID(ID) ||
|
|
ConvertValIDToValue(Ty, ID, V, NULL);
|
|
if (V && !(C = dyn_cast<Constant>(V)))
|
|
return Error(ID.Loc, "global values must be constants");
|
|
return Parsed;
|
|
}
|
|
|
|
bool LLParser::ParseGlobalTypeAndValue(Constant *&V) {
|
|
Type *Ty = 0;
|
|
return ParseType(Ty) ||
|
|
ParseGlobalValue(Ty, 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;
|
|
}
|
|
|
|
bool LLParser::ParseMetadataListValue(ValID &ID, PerFunctionState *PFS) {
|
|
assert(Lex.getKind() == lltok::lbrace);
|
|
Lex.Lex();
|
|
|
|
SmallVector<Value*, 16> Elts;
|
|
if (ParseMDNodeVector(Elts, PFS) ||
|
|
ParseToken(lltok::rbrace, "expected end of metadata node"))
|
|
return true;
|
|
|
|
ID.MDNodeVal = MDNode::get(Context, Elts);
|
|
ID.Kind = ValID::t_MDNode;
|
|
return false;
|
|
}
|
|
|
|
/// ParseMetadataValue
|
|
/// ::= !42
|
|
/// ::= !{...}
|
|
/// ::= !"string"
|
|
bool LLParser::ParseMetadataValue(ValID &ID, PerFunctionState *PFS) {
|
|
assert(Lex.getKind() == lltok::exclaim);
|
|
Lex.Lex();
|
|
|
|
// MDNode:
|
|
// !{ ... }
|
|
if (Lex.getKind() == lltok::lbrace)
|
|
return ParseMetadataListValue(ID, PFS);
|
|
|
|
// Standalone metadata reference
|
|
// !42
|
|
if (Lex.getKind() == lltok::APSInt) {
|
|
if (ParseMDNodeID(ID.MDNodeVal)) return true;
|
|
ID.Kind = ValID::t_MDNode;
|
|
return false;
|
|
}
|
|
|
|
// MDString:
|
|
// ::= '!' STRINGCONSTANT
|
|
if (ParseMDString(ID.MDStringVal)) return true;
|
|
ID.Kind = ValID::t_MDString;
|
|
return false;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Function Parsing.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
bool LLParser::ConvertValIDToValue(const Type *Ty, ValID &ID, Value *&V,
|
|
PerFunctionState *PFS) {
|
|
if (Ty->isFunctionTy())
|
|
return Error(ID.Loc, "functions are not values, refer to them as pointers");
|
|
|
|
switch (ID.Kind) {
|
|
default: llvm_unreachable("Unknown ValID!");
|
|
case ValID::t_LocalID:
|
|
if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
|
|
V = PFS->GetVal(ID.UIntVal, Ty, ID.Loc);
|
|
return (V == 0);
|
|
case ValID::t_LocalName:
|
|
if (!PFS) return Error(ID.Loc, "invalid use of function-local name");
|
|
V = PFS->GetVal(ID.StrVal, Ty, ID.Loc);
|
|
return (V == 0);
|
|
case 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&1, ID.UIntVal>>1);
|
|
return false;
|
|
}
|
|
case ValID::t_MDNode:
|
|
if (!Ty->isMetadataTy())
|
|
return Error(ID.Loc, "metadata value must have metadata type");
|
|
V = ID.MDNodeVal;
|
|
return false;
|
|
case ValID::t_MDString:
|
|
if (!Ty->isMetadataTy())
|
|
return Error(ID.Loc, "metadata value must have metadata type");
|
|
V = ID.MDStringVal;
|
|
return false;
|
|
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 (!Ty->isIntegerTy())
|
|
return Error(ID.Loc, "integer constant must have integer type");
|
|
ID.APSIntVal = ID.APSIntVal.extOrTrunc(Ty->getPrimitiveSizeInBits());
|
|
V = ConstantInt::get(Context, ID.APSIntVal);
|
|
return false;
|
|
case ValID::t_APFloat:
|
|
if (!Ty->isFloatingPointTy() ||
|
|
!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->isFloatTy()) {
|
|
bool Ignored;
|
|
ID.APFloatVal.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven,
|
|
&Ignored);
|
|
}
|
|
V = ConstantFP::get(Context, ID.APFloatVal);
|
|
|
|
if (V->getType() != Ty)
|
|
return Error(ID.Loc, "floating point constant does not have type '" +
|
|
getTypeString(Ty) + "'");
|
|
|
|
return false;
|
|
case ValID::t_Null:
|
|
if (!Ty->isPointerTy())
|
|
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->isLabelTy())
|
|
return Error(ID.Loc, "invalid type for undef constant");
|
|
V = UndefValue::get(Ty);
|
|
return false;
|
|
case ValID::t_EmptyArray:
|
|
if (!Ty->isArrayTy() || 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->isLabelTy())
|
|
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;
|
|
case ValID::t_ConstantStruct:
|
|
case ValID::t_PackedConstantStruct:
|
|
if (const StructType *ST = dyn_cast<StructType>(Ty)) {
|
|
if (ST->getNumElements() != ID.UIntVal)
|
|
return Error(ID.Loc,
|
|
"initializer with struct type has wrong # elements");
|
|
if (ST->isPacked() != (ID.Kind == ValID::t_PackedConstantStruct))
|
|
return Error(ID.Loc, "packed'ness of initializer and type don't match");
|
|
|
|
// Verify that the elements are compatible with the structtype.
|
|
for (unsigned i = 0, e = ID.UIntVal; i != e; ++i)
|
|
if (ID.ConstantStructElts[i]->getType() != ST->getElementType(i))
|
|
return Error(ID.Loc, "element " + Twine(i) +
|
|
" of struct initializer doesn't match struct element type");
|
|
|
|
V = ConstantStruct::get(ST, ArrayRef<Constant*>(ID.ConstantStructElts,
|
|
ID.UIntVal));
|
|
} else
|
|
return Error(ID.Loc, "constant expression type mismatch");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool LLParser::ParseValue(const Type *Ty, Value *&V, PerFunctionState *PFS) {
|
|
V = 0;
|
|
ValID ID;
|
|
return ParseValID(ID, PFS) ||
|
|
ConvertValIDToValue(Ty, ID, V, PFS);
|
|
}
|
|
|
|
bool LLParser::ParseTypeAndValue(Value *&V, PerFunctionState *PFS) {
|
|
Type *Ty = 0;
|
|
return ParseType(Ty) ||
|
|
ParseValue(Ty, V, PFS);
|
|
}
|
|
|
|
bool LLParser::ParseTypeAndBasicBlock(BasicBlock *&BB, LocTy &Loc,
|
|
PerFunctionState &PFS) {
|
|
Value *V;
|
|
Loc = Lex.getLoc();
|
|
if (ParseTypeAndValue(V, PFS)) return true;
|
|
if (!isa<BasicBlock>(V))
|
|
return Error(Loc, "expected a basic block");
|
|
BB = cast<BasicBlock>(V);
|
|
return false;
|
|
}
|
|
|
|
|
|
/// FunctionHeader
|
|
/// ::= OptionalLinkage OptionalVisibility OptionalCallingConv OptRetAttrs
|
|
/// OptUnnamedAddr 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, RetAttrs;
|
|
CallingConv::ID CC;
|
|
Type *RetType = 0;
|
|
LocTy RetTypeLoc = Lex.getLoc();
|
|
if (ParseOptionalLinkage(Linkage) ||
|
|
ParseOptionalVisibility(Visibility) ||
|
|
ParseOptionalCallingConv(CC) ||
|
|
ParseOptionalAttrs(RetAttrs, 1) ||
|
|
ParseType(RetType, RetTypeLoc, true /*void allowed*/))
|
|
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::PrivateLinkage:
|
|
case GlobalValue::LinkerPrivateLinkage:
|
|
case GlobalValue::LinkerPrivateWeakLinkage:
|
|
case GlobalValue::LinkerPrivateWeakDefAutoLinkage:
|
|
case GlobalValue::InternalLinkage:
|
|
case GlobalValue::AvailableExternallyLinkage:
|
|
case GlobalValue::LinkOnceAnyLinkage:
|
|
case GlobalValue::LinkOnceODRLinkage:
|
|
case GlobalValue::WeakAnyLinkage:
|
|
case GlobalValue::WeakODRLinkage:
|
|
case GlobalValue::DLLExportLinkage:
|
|
if (!isDefine)
|
|
return Error(LinkageLoc, "invalid linkage for function declaration");
|
|
break;
|
|
case GlobalValue::AppendingLinkage:
|
|
case GlobalValue::CommonLinkage:
|
|
return Error(LinkageLoc, "invalid function linkage type");
|
|
}
|
|
|
|
if (!FunctionType::isValidReturnType(RetType))
|
|
return Error(RetTypeLoc, "invalid function return type");
|
|
|
|
LocTy NameLoc = Lex.getLoc();
|
|
|
|
std::string FunctionName;
|
|
if (Lex.getKind() == lltok::GlobalVar) {
|
|
FunctionName = Lex.getStrVal();
|
|
} else if (Lex.getKind() == lltok::GlobalID) { // @42 is ok.
|
|
unsigned NameID = Lex.getUIntVal();
|
|
|
|
if (NameID != NumberedVals.size())
|
|
return TokError("function expected to be numbered '%" +
|
|
Twine(NumberedVals.size()) + "'");
|
|
} else {
|
|
return TokError("expected function name");
|
|
}
|
|
|
|
Lex.Lex();
|
|
|
|
if (Lex.getKind() != lltok::lparen)
|
|
return TokError("expected '(' in function argument list");
|
|
|
|
SmallVector<ArgInfo, 8> ArgList;
|
|
bool isVarArg;
|
|
unsigned FuncAttrs;
|
|
std::string Section;
|
|
unsigned Alignment;
|
|
std::string GC;
|
|
bool UnnamedAddr;
|
|
LocTy UnnamedAddrLoc;
|
|
|
|
if (ParseArgumentList(ArgList, isVarArg) ||
|
|
ParseOptionalToken(lltok::kw_unnamed_addr, UnnamedAddr,
|
|
&UnnamedAddrLoc) ||
|
|
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<Type*> ParamTypeList;
|
|
SmallVector<AttributeWithIndex, 8> Attrs;
|
|
|
|
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].Ty);
|
|
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());
|
|
|
|
if (PAL.paramHasAttr(1, Attribute::StructRet) && !RetType->isVoidTy())
|
|
return Error(RetTypeLoc, "functions with 'sret' argument must return void");
|
|
|
|
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);
|
|
if (Fn->getType() != PFT)
|
|
return Error(FRVI->second.second, "invalid forward reference to "
|
|
"function '" + FunctionName + "' with wrong type!");
|
|
|
|
ForwardRefVals.erase(FRVI);
|
|
} else if ((Fn = M->getFunction(FunctionName))) {
|
|
// Reject redefinitions.
|
|
return Error(NameLoc, "invalid redefinition of function '" +
|
|
FunctionName + "'");
|
|
} else if (M->getNamedValue(FunctionName)) {
|
|
return Error(NameLoc, "redefinition of function '@" + FunctionName + "'");
|
|
}
|
|
|
|
} else {
|
|
// 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 '@" +
|
|
Twine(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->setUnnamedAddr(UnnamedAddr);
|
|
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->getName() != ArgList[i].Name)
|
|
return Error(ArgList[i].Loc, "redefinition of argument '%" +
|
|
ArgList[i].Name + "'");
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
/// ParseFunctionBody
|
|
/// ::= '{' BasicBlock+ '}'
|
|
///
|
|
bool LLParser::ParseFunctionBody(Function &Fn) {
|
|
if (Lex.getKind() != lltok::lbrace)
|
|
return TokError("expected '{' in function body");
|
|
Lex.Lex(); // eat the {.
|
|
|
|
int FunctionNumber = -1;
|
|
if (!Fn.hasName()) FunctionNumber = NumberedVals.size()-1;
|
|
|
|
PerFunctionState PFS(*this, Fn, FunctionNumber);
|
|
|
|
// We need at least one basic block.
|
|
if (Lex.getKind() == lltok::rbrace)
|
|
return TokError("function body requires at least one basic block");
|
|
|
|
while (Lex.getKind() != lltok::rbrace)
|
|
if (ParseBasicBlock(PFS)) return true;
|
|
|
|
// Eat the }.
|
|
Lex.Lex();
|
|
|
|
// Verify function is ok.
|
|
return PFS.FinishFunction();
|
|
}
|
|
|
|
/// 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;
|
|
SmallVector<std::pair<unsigned, MDNode *>, 4> MetadataOnInst;
|
|
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) {
|
|
NameStr = Lex.getStrVal();
|
|
Lex.Lex();
|
|
if (ParseToken(lltok::equal, "expected '=' after instruction name"))
|
|
return true;
|
|
}
|
|
|
|
switch (ParseInstruction(Inst, BB, PFS)) {
|
|
default: assert(0 && "Unknown ParseInstruction result!");
|
|
case InstError: return true;
|
|
case InstNormal:
|
|
BB->getInstList().push_back(Inst);
|
|
|
|
// With a normal result, we check to see if the instruction is followed by
|
|
// a comma and metadata.
|
|
if (EatIfPresent(lltok::comma))
|
|
if (ParseInstructionMetadata(Inst, &PFS))
|
|
return true;
|
|
break;
|
|
case InstExtraComma:
|
|
BB->getInstList().push_back(Inst);
|
|
|
|
// If the instruction parser ate an extra comma at the end of it, it
|
|
// *must* be followed by metadata.
|
|
if (ParseInstructionMetadata(Inst, &PFS))
|
|
return true;
|
|
break;
|
|
}
|
|
|
|
// 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.
|
|
///
|
|
int 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();
|
|
unsigned KeywordVal = Lex.getUIntVal();
|
|
Lex.Lex(); // Eat the keyword.
|
|
|
|
switch (Token) {
|
|
default: return Error(Loc, "expected instruction opcode");
|
|
// Terminator Instructions.
|
|
case lltok::kw_unwind: Inst = new UnwindInst(Context); return false;
|
|
case lltok::kw_unreachable: Inst = new UnreachableInst(Context); 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_indirectbr: return ParseIndirectBr(Inst, PFS);
|
|
case lltok::kw_invoke: return ParseInvoke(Inst, PFS);
|
|
// Binary Operators.
|
|
case lltok::kw_add:
|
|
case lltok::kw_sub:
|
|
case lltok::kw_mul:
|
|
case lltok::kw_shl: {
|
|
bool NUW = EatIfPresent(lltok::kw_nuw);
|
|
bool NSW = EatIfPresent(lltok::kw_nsw);
|
|
if (!NUW) NUW = EatIfPresent(lltok::kw_nuw);
|
|
|
|
if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
|
|
|
|
if (NUW) cast<BinaryOperator>(Inst)->setHasNoUnsignedWrap(true);
|
|
if (NSW) cast<BinaryOperator>(Inst)->setHasNoSignedWrap(true);
|
|
return false;
|
|
}
|
|
case lltok::kw_fadd:
|
|
case lltok::kw_fsub:
|
|
case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
|
|
|
|
case lltok::kw_sdiv:
|
|
case lltok::kw_udiv:
|
|
case lltok::kw_lshr:
|
|
case lltok::kw_ashr: {
|
|
bool Exact = EatIfPresent(lltok::kw_exact);
|
|
|
|
if (ParseArithmetic(Inst, PFS, KeywordVal, 1)) return true;
|
|
if (Exact) cast<BinaryOperator>(Inst)->setIsExact(true);
|
|
return false;
|
|
}
|
|
|
|
case lltok::kw_urem:
|
|
case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1);
|
|
case lltok::kw_fdiv:
|
|
case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2);
|
|
case lltok::kw_and:
|
|
case lltok::kw_or:
|
|
case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal);
|
|
case lltok::kw_icmp:
|
|
case lltok::kw_fcmp: return ParseCompare(Inst, PFS, KeywordVal);
|
|
// 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, KeywordVal);
|
|
// 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: return ParseAlloc(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_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) {
|
|
if (Opc == Instruction::FCmp) {
|
|
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 (',' !dbg, !1)*
|
|
/// ::= 'ret' TypeAndValue (',' !dbg, !1)*
|
|
bool LLParser::ParseRet(Instruction *&Inst, BasicBlock *BB,
|
|
PerFunctionState &PFS) {
|
|
SMLoc TypeLoc = Lex.getLoc();
|
|
Type *Ty = 0;
|
|
if (ParseType(Ty, true /*void allowed*/)) return true;
|
|
|
|
Type *ResType = PFS.getFunction().getReturnType();
|
|
|
|
if (Ty->isVoidTy()) {
|
|
if (!ResType->isVoidTy())
|
|
return Error(TypeLoc, "value doesn't match function result type '" +
|
|
getTypeString(ResType) + "'");
|
|
|
|
Inst = ReturnInst::Create(Context);
|
|
return false;
|
|
}
|
|
|
|
Value *RV;
|
|
if (ParseValue(Ty, RV, PFS)) return true;
|
|
|
|
if (ResType != RV->getType())
|
|
return Error(TypeLoc, "value doesn't match function result type '" +
|
|
getTypeString(ResType) + "'");
|
|
|
|
Inst = ReturnInst::Create(Context, RV);
|
|
return false;
|
|
}
|
|
|
|
|
|
/// ParseBr
|
|
/// ::= 'br' TypeAndValue
|
|
/// ::= 'br' TypeAndValue ',' TypeAndValue ',' TypeAndValue
|
|
bool LLParser::ParseBr(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy Loc, Loc2;
|
|
Value *Op0;
|
|
BasicBlock *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::getInt1Ty(Context))
|
|
return Error(Loc, "branch condition must have 'i1' type");
|
|
|
|
if (ParseToken(lltok::comma, "expected ',' after branch condition") ||
|
|
ParseTypeAndBasicBlock(Op1, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after true destination") ||
|
|
ParseTypeAndBasicBlock(Op2, Loc2, PFS))
|
|
return true;
|
|
|
|
Inst = BranchInst::Create(Op1, 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;
|
|
BasicBlock *DefaultBB;
|
|
if (ParseTypeAndValue(Cond, CondLoc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after switch condition") ||
|
|
ParseTypeAndBasicBlock(DefaultBB, BBLoc, PFS) ||
|
|
ParseToken(lltok::lsquare, "expected '[' with switch table"))
|
|
return true;
|
|
|
|
if (!Cond->getType()->isIntegerTy())
|
|
return Error(CondLoc, "switch condition must have integer type");
|
|
|
|
// Parse the jump table pairs.
|
|
SmallPtrSet<Value*, 32> SeenCases;
|
|
SmallVector<std::pair<ConstantInt*, BasicBlock*>, 32> Table;
|
|
while (Lex.getKind() != lltok::rsquare) {
|
|
Value *Constant;
|
|
BasicBlock *DestBB;
|
|
|
|
if (ParseTypeAndValue(Constant, CondLoc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after case value") ||
|
|
ParseTypeAndBasicBlock(DestBB, 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");
|
|
|
|
Table.push_back(std::make_pair(cast<ConstantInt>(Constant), DestBB));
|
|
}
|
|
|
|
Lex.Lex(); // Eat the ']'.
|
|
|
|
SwitchInst *SI = SwitchInst::Create(Cond, 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;
|
|
}
|
|
|
|
/// ParseIndirectBr
|
|
/// Instruction
|
|
/// ::= 'indirectbr' TypeAndValue ',' '[' LabelList ']'
|
|
bool LLParser::ParseIndirectBr(Instruction *&Inst, PerFunctionState &PFS) {
|
|
LocTy AddrLoc;
|
|
Value *Address;
|
|
if (ParseTypeAndValue(Address, AddrLoc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after indirectbr address") ||
|
|
ParseToken(lltok::lsquare, "expected '[' with indirectbr"))
|
|
return true;
|
|
|
|
if (!Address->getType()->isPointerTy())
|
|
return Error(AddrLoc, "indirectbr address must have pointer type");
|
|
|
|
// Parse the destination list.
|
|
SmallVector<BasicBlock*, 16> DestList;
|
|
|
|
if (Lex.getKind() != lltok::rsquare) {
|
|
BasicBlock *DestBB;
|
|
if (ParseTypeAndBasicBlock(DestBB, PFS))
|
|
return true;
|
|
DestList.push_back(DestBB);
|
|
|
|
while (EatIfPresent(lltok::comma)) {
|
|
if (ParseTypeAndBasicBlock(DestBB, PFS))
|
|
return true;
|
|
DestList.push_back(DestBB);
|
|
}
|
|
}
|
|
|
|
if (ParseToken(lltok::rsquare, "expected ']' at end of block list"))
|
|
return true;
|
|
|
|
IndirectBrInst *IBI = IndirectBrInst::Create(Address, DestList.size());
|
|
for (unsigned i = 0, e = DestList.size(); i != e; ++i)
|
|
IBI->addDestination(DestList[i]);
|
|
Inst = IBI;
|
|
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 RetAttrs, FnAttrs;
|
|
CallingConv::ID CC;
|
|
Type *RetType = 0;
|
|
LocTy RetTypeLoc;
|
|
ValID CalleeID;
|
|
SmallVector<ParamInfo, 16> ArgList;
|
|
|
|
BasicBlock *NormalBB, *UnwindBB;
|
|
if (ParseOptionalCallingConv(CC) ||
|
|
ParseOptionalAttrs(RetAttrs, 1) ||
|
|
ParseType(RetType, RetTypeLoc, true /*void allowed*/) ||
|
|
ParseValID(CalleeID) ||
|
|
ParseParameterList(ArgList, PFS) ||
|
|
ParseOptionalAttrs(FnAttrs, 2) ||
|
|
ParseToken(lltok::kw_to, "expected 'to' in invoke") ||
|
|
ParseTypeAndBasicBlock(NormalBB, PFS) ||
|
|
ParseToken(lltok::kw_unwind, "expected 'unwind' in invoke") ||
|
|
ParseTypeAndBasicBlock(UnwindBB, PFS))
|
|
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<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;
|
|
|
|
// 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 '" +
|
|
getTypeString(ExpectedTy) + "'");
|
|
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, NormalBB, UnwindBB, Args);
|
|
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: llvm_unreachable("Unknown operand type!");
|
|
case 0: // int or FP.
|
|
Valid = LHS->getType()->isIntOrIntVectorTy() ||
|
|
LHS->getType()->isFPOrFPVectorTy();
|
|
break;
|
|
case 1: Valid = LHS->getType()->isIntOrIntVectorTy(); break;
|
|
case 2: Valid = LHS->getType()->isFPOrFPVectorTy(); 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()->isIntOrIntVectorTy())
|
|
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
|
|
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()->isFPOrFPVectorTy())
|
|
return Error(Loc, "fcmp requires floating point operands");
|
|
Inst = new FCmpInst(CmpInst::Predicate(Pred), LHS, RHS);
|
|
} else {
|
|
assert(Opc == Instruction::ICmp && "Unknown opcode for CmpInst!");
|
|
if (!LHS->getType()->isIntOrIntVectorTy() &&
|
|
!LHS->getType()->isPointerTy())
|
|
return Error(Loc, "icmp requires integer operands");
|
|
Inst = new ICmpInst(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;
|
|
Type *DestTy = 0;
|
|
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)) {
|
|
CastInst::castIsValid((Instruction::CastOps)Opc, Op, DestTy);
|
|
return Error(Loc, "invalid cast opcode for cast from '" +
|
|
getTypeString(Op->getType()) + "' to '" +
|
|
getTypeString(DestTy) + "'");
|
|
}
|
|
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;
|
|
Type *EltTy = 0;
|
|
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 = ExtractElementInst::Create(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 insertelement 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 ',' Value ']')*
|
|
int LLParser::ParsePHI(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Type *Ty = 0; LocTy TypeLoc;
|
|
Value *Op0, *Op1;
|
|
|
|
if (ParseType(Ty, TypeLoc) ||
|
|
ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
|
|
ParseValue(Ty, Op0, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
|
|
ParseValue(Type::getLabelTy(Context), Op1, PFS) ||
|
|
ParseToken(lltok::rsquare, "expected ']' in phi value list"))
|
|
return true;
|
|
|
|
bool AteExtraComma = false;
|
|
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 (Lex.getKind() == lltok::MetadataVar) {
|
|
AteExtraComma = true;
|
|
break;
|
|
}
|
|
|
|
if (ParseToken(lltok::lsquare, "expected '[' in phi value list") ||
|
|
ParseValue(Ty, Op0, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after insertelement value") ||
|
|
ParseValue(Type::getLabelTy(Context), 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, PHIVals.size());
|
|
for (unsigned i = 0, e = PHIVals.size(); i != e; ++i)
|
|
PN->addIncoming(PHIVals[i].first, PHIVals[i].second);
|
|
Inst = PN;
|
|
return AteExtraComma ? InstExtraComma : InstNormal;
|
|
}
|
|
|
|
/// ParseCall
|
|
/// ::= 'tail'? 'call' OptionalCallingConv OptionalAttrs Type Value
|
|
/// ParameterList OptionalAttrs
|
|
bool LLParser::ParseCall(Instruction *&Inst, PerFunctionState &PFS,
|
|
bool isTail) {
|
|
unsigned RetAttrs, FnAttrs;
|
|
CallingConv::ID CC;
|
|
Type *RetType = 0;
|
|
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, true /*void allowed*/) ||
|
|
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<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;
|
|
|
|
// 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 '" +
|
|
getTypeString(ExpectedTy) + "'");
|
|
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);
|
|
CI->setTailCall(isTail);
|
|
CI->setCallingConv(CC);
|
|
CI->setAttributes(PAL);
|
|
Inst = CI;
|
|
return false;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Memory Instructions.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseAlloc
|
|
/// ::= 'alloca' Type (',' TypeAndValue)? (',' OptionalInfo)?
|
|
int LLParser::ParseAlloc(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Size = 0;
|
|
LocTy SizeLoc;
|
|
unsigned Alignment = 0;
|
|
Type *Ty = 0;
|
|
if (ParseType(Ty)) return true;
|
|
|
|
bool AteExtraComma = false;
|
|
if (EatIfPresent(lltok::comma)) {
|
|
if (Lex.getKind() == lltok::kw_align) {
|
|
if (ParseOptionalAlignment(Alignment)) return true;
|
|
} else if (Lex.getKind() == lltok::MetadataVar) {
|
|
AteExtraComma = true;
|
|
} else {
|
|
if (ParseTypeAndValue(Size, SizeLoc, PFS) ||
|
|
ParseOptionalCommaAlign(Alignment, AteExtraComma))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (Size && !Size->getType()->isIntegerTy())
|
|
return Error(SizeLoc, "element count must have integer type");
|
|
|
|
Inst = new AllocaInst(Ty, Size, Alignment);
|
|
return AteExtraComma ? InstExtraComma : InstNormal;
|
|
}
|
|
|
|
/// ParseLoad
|
|
/// ::= 'volatile'? 'load' TypeAndValue (',' OptionalInfo)?
|
|
int LLParser::ParseLoad(Instruction *&Inst, PerFunctionState &PFS,
|
|
bool isVolatile) {
|
|
Value *Val; LocTy Loc;
|
|
unsigned Alignment = 0;
|
|
bool AteExtraComma = false;
|
|
if (ParseTypeAndValue(Val, Loc, PFS) ||
|
|
ParseOptionalCommaAlign(Alignment, AteExtraComma))
|
|
return true;
|
|
|
|
if (!Val->getType()->isPointerTy() ||
|
|
!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 AteExtraComma ? InstExtraComma : InstNormal;
|
|
}
|
|
|
|
/// ParseStore
|
|
/// ::= 'volatile'? 'store' TypeAndValue ',' TypeAndValue (',' 'align' i32)?
|
|
int LLParser::ParseStore(Instruction *&Inst, PerFunctionState &PFS,
|
|
bool isVolatile) {
|
|
Value *Val, *Ptr; LocTy Loc, PtrLoc;
|
|
unsigned Alignment = 0;
|
|
bool AteExtraComma = false;
|
|
if (ParseTypeAndValue(Val, Loc, PFS) ||
|
|
ParseToken(lltok::comma, "expected ',' after store operand") ||
|
|
ParseTypeAndValue(Ptr, PtrLoc, PFS) ||
|
|
ParseOptionalCommaAlign(Alignment, AteExtraComma))
|
|
return true;
|
|
|
|
if (!Ptr->getType()->isPointerTy())
|
|
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 AteExtraComma ? InstExtraComma : InstNormal;
|
|
}
|
|
|
|
/// ParseGetElementPtr
|
|
/// ::= 'getelementptr' 'inbounds'? TypeAndValue (',' TypeAndValue)*
|
|
int LLParser::ParseGetElementPtr(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Ptr, *Val; LocTy Loc, EltLoc;
|
|
|
|
bool InBounds = EatIfPresent(lltok::kw_inbounds);
|
|
|
|
if (ParseTypeAndValue(Ptr, Loc, PFS)) return true;
|
|
|
|
if (!Ptr->getType()->isPointerTy())
|
|
return Error(Loc, "base of getelementptr must be a pointer");
|
|
|
|
SmallVector<Value*, 16> Indices;
|
|
bool AteExtraComma = false;
|
|
while (EatIfPresent(lltok::comma)) {
|
|
if (Lex.getKind() == lltok::MetadataVar) {
|
|
AteExtraComma = true;
|
|
break;
|
|
}
|
|
if (ParseTypeAndValue(Val, EltLoc, PFS)) return true;
|
|
if (!Val->getType()->isIntegerTy())
|
|
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());
|
|
if (InBounds)
|
|
cast<GetElementPtrInst>(Inst)->setIsInBounds(true);
|
|
return AteExtraComma ? InstExtraComma : InstNormal;
|
|
}
|
|
|
|
/// ParseExtractValue
|
|
/// ::= 'extractvalue' TypeAndValue (',' uint32)+
|
|
int LLParser::ParseExtractValue(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Val; LocTy Loc;
|
|
SmallVector<unsigned, 4> Indices;
|
|
bool AteExtraComma;
|
|
if (ParseTypeAndValue(Val, Loc, PFS) ||
|
|
ParseIndexList(Indices, AteExtraComma))
|
|
return true;
|
|
|
|
if (!Val->getType()->isAggregateType())
|
|
return Error(Loc, "extractvalue operand must be aggregate type");
|
|
|
|
if (!ExtractValueInst::getIndexedType(Val->getType(), Indices))
|
|
return Error(Loc, "invalid indices for extractvalue");
|
|
Inst = ExtractValueInst::Create(Val, Indices);
|
|
return AteExtraComma ? InstExtraComma : InstNormal;
|
|
}
|
|
|
|
/// ParseInsertValue
|
|
/// ::= 'insertvalue' TypeAndValue ',' TypeAndValue (',' uint32)+
|
|
int LLParser::ParseInsertValue(Instruction *&Inst, PerFunctionState &PFS) {
|
|
Value *Val0, *Val1; LocTy Loc0, Loc1;
|
|
SmallVector<unsigned, 4> Indices;
|
|
bool AteExtraComma;
|
|
if (ParseTypeAndValue(Val0, Loc0, PFS) ||
|
|
ParseToken(lltok::comma, "expected comma after insertvalue operand") ||
|
|
ParseTypeAndValue(Val1, Loc1, PFS) ||
|
|
ParseIndexList(Indices, AteExtraComma))
|
|
return true;
|
|
|
|
if (!Val0->getType()->isAggregateType())
|
|
return Error(Loc0, "insertvalue operand must be aggregate type");
|
|
|
|
if (!ExtractValueInst::getIndexedType(Val0->getType(), Indices))
|
|
return Error(Loc0, "invalid indices for insertvalue");
|
|
Inst = InsertValueInst::Create(Val0, Val1, Indices);
|
|
return AteExtraComma ? InstExtraComma : InstNormal;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Embedded metadata.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ParseMDNodeVector
|
|
/// ::= Element (',' Element)*
|
|
/// Element
|
|
/// ::= 'null' | TypeAndValue
|
|
bool LLParser::ParseMDNodeVector(SmallVectorImpl<Value*> &Elts,
|
|
PerFunctionState *PFS) {
|
|
// Check for an empty list.
|
|
if (Lex.getKind() == lltok::rbrace)
|
|
return false;
|
|
|
|
do {
|
|
// Null is a special case since it is typeless.
|
|
if (EatIfPresent(lltok::kw_null)) {
|
|
Elts.push_back(0);
|
|
continue;
|
|
}
|
|
|
|
Value *V = 0;
|
|
if (ParseTypeAndValue(V, PFS)) return true;
|
|
Elts.push_back(V);
|
|
} while (EatIfPresent(lltok::comma));
|
|
|
|
return false;
|
|
}
|