// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
-//
-// This header defines the BitcodeReader class.
-//
-//===----------------------------------------------------------------------===//
#include "llvm/Bitcode/ReaderWriter.h"
#include "BitcodeReader.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/InlineAsm.h"
-#include "llvm/IntrinsicInst.h"
-#include "llvm/Module.h"
-#include "llvm/Operator.h"
-#include "llvm/AutoUpgrade.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/AutoUpgrade.h"
+#include "llvm/Bitcode/LLVMBitCodes.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/InlineAsm.h"
+#include "llvm/IR/IntrinsicInst.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/OperandTraits.h"
+#include "llvm/IR/Operator.h"
#include "llvm/Support/DataStream.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/OperandTraits.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
enum {
ValueList.clear();
MDValueList.clear();
- std::vector<AttrListPtr>().swap(MAttributes);
+ std::vector<AttributeSet>().swap(MAttributes);
std::vector<BasicBlock*>().swap(FunctionBBs);
std::vector<Function*>().swap(FunctionsWithBodies);
DeferredFunctionInfo.clear();
}
// Create and return a placeholder, which will later be RAUW'd.
- Value *V = MDNode::getTemporary(Context, ArrayRef<Value*>());
+ Value *V = MDNode::getTemporary(Context, None);
MDValuePtrs[Idx] = V;
return V;
}
// Functions for parsing blocks from the bitcode file
//===----------------------------------------------------------------------===//
+
+/// \brief This fills an AttrBuilder object with the LLVM attributes that have
+/// been decoded from the given integer. This function must stay in sync with
+/// 'encodeLLVMAttributesForBitcode'.
+static void decodeLLVMAttributesForBitcode(AttrBuilder &B,
+ uint64_t EncodedAttrs) {
+ // FIXME: Remove in 4.0.
+
+ // The alignment is stored as a 16-bit raw value from bits 31--16. We shift
+ // the bits above 31 down by 11 bits.
+ unsigned Alignment = (EncodedAttrs & (0xffffULL << 16)) >> 16;
+ assert((!Alignment || isPowerOf2_32(Alignment)) &&
+ "Alignment must be a power of two.");
+
+ if (Alignment)
+ B.addAlignmentAttr(Alignment);
+ B.addRawValue(((EncodedAttrs & (0xfffffULL << 32)) >> 11) |
+ (EncodedAttrs & 0xffff));
+}
+
bool BitcodeReader::ParseAttributeBlock() {
if (Stream.EnterSubBlock(bitc::PARAMATTR_BLOCK_ID))
return Error("Malformed block record");
SmallVector<uint64_t, 64> Record;
- SmallVector<AttributeWithIndex, 8> Attrs;
+ SmallVector<AttributeSet, 8> Attrs;
// Read all the records.
while (1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of PARAMATTR block");
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return Error("Error at end of PARAMATTR block");
+ case BitstreamEntry::EndBlock:
return false;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
- if (Code == bitc::ENTER_SUBBLOCK) {
- // No known subblocks, always skip them.
- Stream.ReadSubBlockID();
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- continue;
+ // Read a record.
+ Record.clear();
+ switch (Stream.readRecord(Entry.ID, Record)) {
+ default: // Default behavior: ignore.
+ break;
+ case bitc::PARAMATTR_CODE_ENTRY_OLD: { // ENTRY: [paramidx0, attr0, ...]
+ // FIXME: Remove in 4.0.
+ if (Record.size() & 1)
+ return Error("Invalid ENTRY record");
+
+ for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
+ AttrBuilder B;
+ decodeLLVMAttributesForBitcode(B, Record[i+1]);
+ Attrs.push_back(AttributeSet::get(Context, Record[i], B));
+ }
+
+ MAttributes.push_back(AttributeSet::get(Context, Attrs));
+ Attrs.clear();
+ break;
}
+ case bitc::PARAMATTR_CODE_ENTRY: { // ENTRY: [attrgrp0, attrgrp1, ...]
+ for (unsigned i = 0, e = Record.size(); i != e; ++i)
+ Attrs.push_back(MAttributeGroups[Record[i]]);
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ MAttributes.push_back(AttributeSet::get(Context, Attrs));
+ Attrs.clear();
+ break;
+ }
+ }
+ }
+}
+
+bool BitcodeReader::ParseAttrKind(uint64_t Code, Attribute::AttrKind *Kind) {
+ switch (Code) {
+ case bitc::ATTR_KIND_ALIGNMENT:
+ *Kind = Attribute::Alignment;
+ return false;
+ case bitc::ATTR_KIND_ALWAYS_INLINE:
+ *Kind = Attribute::AlwaysInline;
+ return false;
+ case bitc::ATTR_KIND_BUILTIN:
+ *Kind = Attribute::Builtin;
+ return false;
+ case bitc::ATTR_KIND_BY_VAL:
+ *Kind = Attribute::ByVal;
+ return false;
+ case bitc::ATTR_KIND_COLD:
+ *Kind = Attribute::Cold;
+ return false;
+ case bitc::ATTR_KIND_INLINE_HINT:
+ *Kind = Attribute::InlineHint;
+ return false;
+ case bitc::ATTR_KIND_IN_REG:
+ *Kind = Attribute::InReg;
+ return false;
+ case bitc::ATTR_KIND_MIN_SIZE:
+ *Kind = Attribute::MinSize;
+ return false;
+ case bitc::ATTR_KIND_NAKED:
+ *Kind = Attribute::Naked;
+ return false;
+ case bitc::ATTR_KIND_NEST:
+ *Kind = Attribute::Nest;
+ return false;
+ case bitc::ATTR_KIND_NO_ALIAS:
+ *Kind = Attribute::NoAlias;
+ return false;
+ case bitc::ATTR_KIND_NO_BUILTIN:
+ *Kind = Attribute::NoBuiltin;
+ return false;
+ case bitc::ATTR_KIND_NO_CAPTURE:
+ *Kind = Attribute::NoCapture;
+ return false;
+ case bitc::ATTR_KIND_NO_DUPLICATE:
+ *Kind = Attribute::NoDuplicate;
+ return false;
+ case bitc::ATTR_KIND_NO_IMPLICIT_FLOAT:
+ *Kind = Attribute::NoImplicitFloat;
+ return false;
+ case bitc::ATTR_KIND_NO_INLINE:
+ *Kind = Attribute::NoInline;
+ return false;
+ case bitc::ATTR_KIND_NON_LAZY_BIND:
+ *Kind = Attribute::NonLazyBind;
+ return false;
+ case bitc::ATTR_KIND_NO_RED_ZONE:
+ *Kind = Attribute::NoRedZone;
+ return false;
+ case bitc::ATTR_KIND_NO_RETURN:
+ *Kind = Attribute::NoReturn;
+ return false;
+ case bitc::ATTR_KIND_NO_UNWIND:
+ *Kind = Attribute::NoUnwind;
+ return false;
+ case bitc::ATTR_KIND_OPTIMIZE_FOR_SIZE:
+ *Kind = Attribute::OptimizeForSize;
+ return false;
+ case bitc::ATTR_KIND_OPTIMIZE_NONE:
+ *Kind = Attribute::OptimizeNone;
+ return false;
+ case bitc::ATTR_KIND_READ_NONE:
+ *Kind = Attribute::ReadNone;
+ return false;
+ case bitc::ATTR_KIND_READ_ONLY:
+ *Kind = Attribute::ReadOnly;
+ return false;
+ case bitc::ATTR_KIND_RETURNED:
+ *Kind = Attribute::Returned;
+ return false;
+ case bitc::ATTR_KIND_RETURNS_TWICE:
+ *Kind = Attribute::ReturnsTwice;
+ return false;
+ case bitc::ATTR_KIND_S_EXT:
+ *Kind = Attribute::SExt;
+ return false;
+ case bitc::ATTR_KIND_STACK_ALIGNMENT:
+ *Kind = Attribute::StackAlignment;
+ return false;
+ case bitc::ATTR_KIND_STACK_PROTECT:
+ *Kind = Attribute::StackProtect;
+ return false;
+ case bitc::ATTR_KIND_STACK_PROTECT_REQ:
+ *Kind = Attribute::StackProtectReq;
+ return false;
+ case bitc::ATTR_KIND_STACK_PROTECT_STRONG:
+ *Kind = Attribute::StackProtectStrong;
+ return false;
+ case bitc::ATTR_KIND_STRUCT_RET:
+ *Kind = Attribute::StructRet;
+ return false;
+ case bitc::ATTR_KIND_SANITIZE_ADDRESS:
+ *Kind = Attribute::SanitizeAddress;
+ return false;
+ case bitc::ATTR_KIND_SANITIZE_THREAD:
+ *Kind = Attribute::SanitizeThread;
+ return false;
+ case bitc::ATTR_KIND_SANITIZE_MEMORY:
+ *Kind = Attribute::SanitizeMemory;
+ return false;
+ case bitc::ATTR_KIND_UW_TABLE:
+ *Kind = Attribute::UWTable;
+ return false;
+ case bitc::ATTR_KIND_Z_EXT:
+ *Kind = Attribute::ZExt;
+ return false;
+ default:
+ std::string Buf;
+ raw_string_ostream fmt(Buf);
+ fmt << "Unknown attribute kind (" << Code << ")";
+ fmt.flush();
+ return Error(Buf.c_str());
+ }
+}
+
+bool BitcodeReader::ParseAttributeGroupBlock() {
+ if (Stream.EnterSubBlock(bitc::PARAMATTR_GROUP_BLOCK_ID))
+ return Error("Malformed block record");
+
+ if (!MAttributeGroups.empty())
+ return Error("Multiple PARAMATTR_GROUP blocks found!");
+
+ SmallVector<uint64_t, 64> Record;
+
+ // Read all the records.
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return Error("Error at end of PARAMATTR_GROUP block");
+ case BitstreamEntry::EndBlock:
+ return false;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
// Read a record.
Record.clear();
- switch (Stream.ReadRecord(Code, Record)) {
+ switch (Stream.readRecord(Entry.ID, Record)) {
default: // Default behavior: ignore.
break;
- case bitc::PARAMATTR_CODE_ENTRY: { // ENTRY: [paramidx0, attr0, ...]
- if (Record.size() & 1)
+ case bitc::PARAMATTR_GRP_CODE_ENTRY: { // ENTRY: [grpid, idx, a0, a1, ...]
+ if (Record.size() < 3)
return Error("Invalid ENTRY record");
- for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
- Attributes ReconstitutedAttr =
- Attributes::decodeLLVMAttributesForBitcode(Context, Record[i+1]);
- Record[i+1] = ReconstitutedAttr.Raw();
- }
+ uint64_t GrpID = Record[0];
+ uint64_t Idx = Record[1]; // Index of the object this attribute refers to.
- for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
- AttrBuilder B(Record[i+1]);
- if (B.hasAttributes())
- Attrs.push_back(AttributeWithIndex::get(Record[i],
- Attributes::get(Context, B)));
+ AttrBuilder B;
+ for (unsigned i = 2, e = Record.size(); i != e; ++i) {
+ if (Record[i] == 0) { // Enum attribute
+ Attribute::AttrKind Kind;
+ if (ParseAttrKind(Record[++i], &Kind))
+ return true;
+
+ B.addAttribute(Kind);
+ } else if (Record[i] == 1) { // Align attribute
+ Attribute::AttrKind Kind;
+ if (ParseAttrKind(Record[++i], &Kind))
+ return true;
+ if (Kind == Attribute::Alignment)
+ B.addAlignmentAttr(Record[++i]);
+ else
+ B.addStackAlignmentAttr(Record[++i]);
+ } else { // String attribute
+ assert((Record[i] == 3 || Record[i] == 4) &&
+ "Invalid attribute group entry");
+ bool HasValue = (Record[i++] == 4);
+ SmallString<64> KindStr;
+ SmallString<64> ValStr;
+
+ while (Record[i] != 0 && i != e)
+ KindStr += Record[i++];
+ assert(Record[i] == 0 && "Kind string not null terminated");
+
+ if (HasValue) {
+ // Has a value associated with it.
+ ++i; // Skip the '0' that terminates the "kind" string.
+ while (Record[i] != 0 && i != e)
+ ValStr += Record[i++];
+ assert(Record[i] == 0 && "Value string not null terminated");
+ }
+
+ B.addAttribute(KindStr.str(), ValStr.str());
+ }
}
- MAttributes.push_back(AttrListPtr::get(Context, Attrs));
- Attrs.clear();
+ MAttributeGroups[GrpID] = AttributeSet::get(Context, Idx, B);
break;
}
}
// Read all the records for this type table.
while (1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ Error("Error in the type table block");
+ return true;
+ case BitstreamEntry::EndBlock:
if (NumRecords != TypeList.size())
return Error("Invalid type forward reference in TYPE_BLOCK");
- if (Stream.ReadBlockEnd())
- return Error("Error at end of type table block");
return false;
- }
-
- if (Code == bitc::ENTER_SUBBLOCK) {
- // No known subblocks, always skip them.
- Stream.ReadSubBlockID();
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- continue;
- }
-
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
// Read a record.
Record.clear();
Type *ResultTy = 0;
- switch (Stream.ReadRecord(Code, Record)) {
+ switch (Stream.readRecord(Entry.ID, Record)) {
default: return Error("unknown type in type table");
case bitc::TYPE_CODE_NUMENTRY: // TYPE_CODE_NUMENTRY: [numentries]
// TYPE_CODE_NUMENTRY contains a count of the number of types in the
// Read all the records for this value table.
SmallString<128> ValueName;
while (1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of value symbol table block");
- return false;
- }
- if (Code == bitc::ENTER_SUBBLOCK) {
- // No known subblocks, always skip them.
- Stream.ReadSubBlockID();
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- continue;
- }
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return Error("malformed value symbol table block");
+ case BitstreamEntry::EndBlock:
+ return false;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
// Read a record.
Record.clear();
- switch (Stream.ReadRecord(Code, Record)) {
+ switch (Stream.readRecord(Entry.ID, Record)) {
default: // Default behavior: unknown type.
break;
case bitc::VST_CODE_ENTRY: { // VST_ENTRY: [valueid, namechar x N]
// Read all the records.
while (1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of PARAMATTR block");
- return false;
- }
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
- if (Code == bitc::ENTER_SUBBLOCK) {
- // No known subblocks, always skip them.
- Stream.ReadSubBlockID();
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- continue;
- }
-
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ Error("malformed metadata block");
+ return true;
+ case BitstreamEntry::EndBlock:
+ return false;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
bool IsFunctionLocal = false;
// Read a record.
Record.clear();
- Code = Stream.ReadRecord(Code, Record);
+ unsigned Code = Stream.readRecord(Entry.ID, Record);
switch (Code) {
default: // Default behavior: ignore.
break;
case bitc::METADATA_NAME: {
- // Read named of the named metadata.
+ // Read name of the named metadata.
SmallString<8> Name(Record.begin(), Record.end());
Record.clear();
Code = Stream.ReadCode();
// METADATA_NAME is always followed by METADATA_NAMED_NODE.
- unsigned NextBitCode = Stream.ReadRecord(Code, Record);
+ unsigned NextBitCode = Stream.readRecord(Code, Record);
assert(NextBitCode == bitc::METADATA_NAMED_NODE); (void)NextBitCode;
// Read named metadata elements.
bool BitcodeReader::ResolveGlobalAndAliasInits() {
std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInitWorklist;
std::vector<std::pair<GlobalAlias*, unsigned> > AliasInitWorklist;
+ std::vector<std::pair<Function*, unsigned> > FunctionPrefixWorklist;
GlobalInitWorklist.swap(GlobalInits);
AliasInitWorklist.swap(AliasInits);
+ FunctionPrefixWorklist.swap(FunctionPrefixes);
while (!GlobalInitWorklist.empty()) {
unsigned ValID = GlobalInitWorklist.back().second;
}
AliasInitWorklist.pop_back();
}
+
+ while (!FunctionPrefixWorklist.empty()) {
+ unsigned ValID = FunctionPrefixWorklist.back().second;
+ if (ValID >= ValueList.size()) {
+ FunctionPrefixes.push_back(FunctionPrefixWorklist.back());
+ } else {
+ if (Constant *C = dyn_cast<Constant>(ValueList[ValID]))
+ FunctionPrefixWorklist.back().first->setPrefixData(C);
+ else
+ return Error("Function prefix is not a constant!");
+ }
+ FunctionPrefixWorklist.pop_back();
+ }
+
return false;
}
Type *CurTy = Type::getInt32Ty(Context);
unsigned NextCstNo = ValueList.size();
while (1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK)
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return Error("malformed block record in AST file");
+ case BitstreamEntry::EndBlock:
+ if (NextCstNo != ValueList.size())
+ return Error("Invalid constant reference!");
+
+ // Once all the constants have been read, go through and resolve forward
+ // references.
+ ValueList.ResolveConstantForwardRefs();
+ return false;
+ case BitstreamEntry::Record:
+ // The interesting case.
break;
-
- if (Code == bitc::ENTER_SUBBLOCK) {
- // No known subblocks, always skip them.
- Stream.ReadSubBlockID();
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- continue;
- }
-
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
}
// Read a record.
Record.clear();
Value *V = 0;
- unsigned BitCode = Stream.ReadRecord(Code, Record);
+ unsigned BitCode = Stream.readRecord(Entry.ID, Record);
switch (BitCode) {
default: // Default behavior: unknown constant
case bitc::CST_CODE_UNDEF: // UNDEF
if (Record.empty())
return Error("Invalid FLOAT record");
if (CurTy->isHalfTy())
- V = ConstantFP::get(Context, APFloat(APInt(16, (uint16_t)Record[0])));
+ V = ConstantFP::get(Context, APFloat(APFloat::IEEEhalf,
+ APInt(16, (uint16_t)Record[0])));
else if (CurTy->isFloatTy())
- V = ConstantFP::get(Context, APFloat(APInt(32, (uint32_t)Record[0])));
+ V = ConstantFP::get(Context, APFloat(APFloat::IEEEsingle,
+ APInt(32, (uint32_t)Record[0])));
else if (CurTy->isDoubleTy())
- V = ConstantFP::get(Context, APFloat(APInt(64, Record[0])));
+ V = ConstantFP::get(Context, APFloat(APFloat::IEEEdouble,
+ APInt(64, Record[0])));
else if (CurTy->isX86_FP80Ty()) {
// Bits are not stored the same way as a normal i80 APInt, compensate.
uint64_t Rearrange[2];
Rearrange[0] = (Record[1] & 0xffffLL) | (Record[0] << 16);
Rearrange[1] = Record[0] >> 48;
- V = ConstantFP::get(Context, APFloat(APInt(80, Rearrange)));
+ V = ConstantFP::get(Context, APFloat(APFloat::x87DoubleExtended,
+ APInt(80, Rearrange)));
} else if (CurTy->isFP128Ty())
- V = ConstantFP::get(Context, APFloat(APInt(128, Record), true));
+ V = ConstantFP::get(Context, APFloat(APFloat::IEEEquad,
+ APInt(128, Record)));
else if (CurTy->isPPC_FP128Ty())
- V = ConstantFP::get(Context, APFloat(APInt(128, Record)));
+ V = ConstantFP::get(Context, APFloat(APFloat::PPCDoubleDouble,
+ APInt(128, Record)));
else
V = UndefValue::get(CurTy);
break;
bitc::CST_CODE_CE_INBOUNDS_GEP);
break;
}
- case bitc::CST_CODE_CE_SELECT: // CE_SELECT: [opval#, opval#, opval#]
+ case bitc::CST_CODE_CE_SELECT: { // CE_SELECT: [opval#, opval#, opval#]
if (Record.size() < 3) return Error("Invalid CE_SELECT record");
- V = ConstantExpr::getSelect(
- ValueList.getConstantFwdRef(Record[0],
- Type::getInt1Ty(Context)),
- ValueList.getConstantFwdRef(Record[1],CurTy),
- ValueList.getConstantFwdRef(Record[2],CurTy));
+
+ Type *SelectorTy = Type::getInt1Ty(Context);
+
+ // If CurTy is a vector of length n, then Record[0] must be a <n x i1>
+ // vector. Otherwise, it must be a single bit.
+ if (VectorType *VTy = dyn_cast<VectorType>(CurTy))
+ SelectorTy = VectorType::get(Type::getInt1Ty(Context),
+ VTy->getNumElements());
+
+ V = ConstantExpr::getSelect(ValueList.getConstantFwdRef(Record[0],
+ SelectorTy),
+ ValueList.getConstantFwdRef(Record[1],CurTy),
+ ValueList.getConstantFwdRef(Record[2],CurTy));
break;
+ }
case bitc::CST_CODE_CE_EXTRACTELT: { // CE_EXTRACTELT: [opty, opval, opval]
if (Record.size() < 3) return Error("Invalid CE_EXTRACTELT record");
VectorType *OpTy =
ValueList.AssignValue(V, NextCstNo);
++NextCstNo;
}
-
- if (NextCstNo != ValueList.size())
- return Error("Invalid constant reference!");
-
- if (Stream.ReadBlockEnd())
- return Error("Error at end of constants block");
-
- // Once all the constants have been read, go through and resolve forward
- // references.
- ValueList.ResolveConstantForwardRefs();
- return false;
}
bool BitcodeReader::ParseUseLists() {
// Read all the records.
while (1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of use-list table block");
- return false;
- }
-
- if (Code == bitc::ENTER_SUBBLOCK) {
- // No known subblocks, always skip them.
- Stream.ReadSubBlockID();
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- continue;
- }
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return Error("malformed use list block");
+ case BitstreamEntry::EndBlock:
+ return false;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
// Read a use list record.
Record.clear();
- switch (Stream.ReadRecord(Code, Record)) {
+ switch (Stream.readRecord(Entry.ID, Record)) {
default: // Default behavior: unknown type.
break;
case bitc::USELIST_CODE_ENTRY: { // USELIST_CODE_ENTRY: TBD.
std::vector<std::string> GCTable;
// Read all the records for this module.
- while (!Stream.AtEndOfStream()) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of module block");
+ while (1) {
+ BitstreamEntry Entry = Stream.advance();
+ switch (Entry.Kind) {
+ case BitstreamEntry::Error:
+ Error("malformed module block");
+ return true;
+ case BitstreamEntry::EndBlock:
return GlobalCleanup();
- }
- if (Code == bitc::ENTER_SUBBLOCK) {
- switch (Stream.ReadSubBlockID()) {
+ case BitstreamEntry::SubBlock:
+ switch (Entry.ID) {
default: // Skip unknown content.
if (Stream.SkipBlock())
return Error("Malformed block record");
if (ParseAttributeBlock())
return true;
break;
+ case bitc::PARAMATTR_GROUP_BLOCK_ID:
+ if (ParseAttributeGroupBlock())
+ return true;
+ break;
case bitc::TYPE_BLOCK_ID_NEW:
if (ParseTypeTable())
return true;
break;
}
continue;
- }
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
+
// Read a record.
- switch (Stream.ReadRecord(Code, Record)) {
+ switch (Stream.readRecord(Entry.ID, Record)) {
default: break; // Default behavior, ignore unknown content.
case bitc::MODULE_CODE_VERSION: { // VERSION: [version#]
if (Record.size() < 1)
break;
}
case bitc::MODULE_CODE_DEPLIB: { // DEPLIB: [strchr x N]
+ // FIXME: Remove in 4.0.
std::string S;
if (ConvertToString(Record, 0, S))
return Error("Invalid MODULE_CODE_DEPLIB record");
- TheModule->addLibrary(S);
+ // Ignore value.
break;
}
case bitc::MODULE_CODE_SECTIONNAME: { // SECTIONNAME: [strchr x N]
if (Record.size() > 8)
UnnamedAddr = Record[8];
+ bool ExternallyInitialized = false;
+ if (Record.size() > 9)
+ ExternallyInitialized = Record[9];
+
GlobalVariable *NewGV =
new GlobalVariable(*TheModule, Ty, isConstant, Linkage, 0, "", 0,
- TLM, AddressSpace);
+ TLM, AddressSpace, ExternallyInitialized);
NewGV->setAlignment(Alignment);
if (!Section.empty())
NewGV->setSection(Section);
if (Record.size() > 9)
UnnamedAddr = Record[9];
Func->setUnnamedAddr(UnnamedAddr);
+ if (Record.size() > 10 && Record[10] != 0)
+ FunctionPrefixes.push_back(std::make_pair(Func, Record[10]-1));
ValueList.push_back(Func);
// If this is a function with a body, remember the prototype we are
}
Record.clear();
}
-
- return Error("Premature end of bitstream");
}
bool BitcodeReader::ParseBitcodeInto(Module *M) {
// We expect a number of well-defined blocks, though we don't necessarily
// need to understand them all.
- while (!Stream.AtEndOfStream()) {
- unsigned Code = Stream.ReadCode();
+ while (1) {
+ if (Stream.AtEndOfStream())
+ return false;
- if (Code != bitc::ENTER_SUBBLOCK) {
+ BitstreamEntry Entry =
+ Stream.advance(BitstreamCursor::AF_DontAutoprocessAbbrevs);
- // The ranlib in xcode 4 will align archive members by appending newlines
+ switch (Entry.Kind) {
+ case BitstreamEntry::Error:
+ Error("malformed module file");
+ return true;
+ case BitstreamEntry::EndBlock:
+ return false;
+
+ case BitstreamEntry::SubBlock:
+ switch (Entry.ID) {
+ case bitc::BLOCKINFO_BLOCK_ID:
+ if (Stream.ReadBlockInfoBlock())
+ return Error("Malformed BlockInfoBlock");
+ break;
+ case bitc::MODULE_BLOCK_ID:
+ // Reject multiple MODULE_BLOCK's in a single bitstream.
+ if (TheModule)
+ return Error("Multiple MODULE_BLOCKs in same stream");
+ TheModule = M;
+ if (ParseModule(false))
+ return true;
+ if (LazyStreamer) return false;
+ break;
+ default:
+ if (Stream.SkipBlock())
+ return Error("Malformed block record");
+ break;
+ }
+ continue;
+ case BitstreamEntry::Record:
+ // There should be no records in the top-level of blocks.
+
+ // The ranlib in Xcode 4 will align archive members by appending newlines
// to the end of them. If this file size is a multiple of 4 but not 8, we
// have to read and ignore these final 4 bytes :-(
- if (Stream.GetAbbrevIDWidth() == 2 && Code == 2 &&
+ if (Stream.getAbbrevIDWidth() == 2 && Entry.ID == 2 &&
Stream.Read(6) == 2 && Stream.Read(24) == 0xa0a0a &&
Stream.AtEndOfStream())
return false;
return Error("Invalid record at top-level");
}
-
- unsigned BlockID = Stream.ReadSubBlockID();
-
- // We only know the MODULE subblock ID.
- switch (BlockID) {
- case bitc::BLOCKINFO_BLOCK_ID:
- if (Stream.ReadBlockInfoBlock())
- return Error("Malformed BlockInfoBlock");
- break;
- case bitc::MODULE_BLOCK_ID:
- // Reject multiple MODULE_BLOCK's in a single bitstream.
- if (TheModule)
- return Error("Multiple MODULE_BLOCKs in same stream");
- TheModule = M;
- if (ParseModule(false))
- return true;
- if (LazyStreamer) return false;
- break;
- default:
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- break;
- }
}
-
- return false;
}
bool BitcodeReader::ParseModuleTriple(std::string &Triple) {
SmallVector<uint64_t, 64> Record;
// Read all the records for this module.
- while (!Stream.AtEndOfStream()) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of module block");
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return Error("malformed module block");
+ case BitstreamEntry::EndBlock:
return false;
- }
-
- if (Code == bitc::ENTER_SUBBLOCK) {
- switch (Stream.ReadSubBlockID()) {
- default: // Skip unknown content.
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- break;
- }
- continue;
- }
-
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
// Read a record.
- switch (Stream.ReadRecord(Code, Record)) {
+ switch (Stream.readRecord(Entry.ID, Record)) {
default: break; // Default behavior, ignore unknown content.
case bitc::MODULE_CODE_TRIPLE: { // TRIPLE: [strchr x N]
std::string S;
}
Record.clear();
}
-
- return Error("Premature end of bitstream");
}
bool BitcodeReader::ParseTriple(std::string &Triple) {
// We expect a number of well-defined blocks, though we don't necessarily
// need to understand them all.
- while (!Stream.AtEndOfStream()) {
- unsigned Code = Stream.ReadCode();
+ while (1) {
+ BitstreamEntry Entry = Stream.advance();
- if (Code != bitc::ENTER_SUBBLOCK)
- return Error("Invalid record at top-level");
+ switch (Entry.Kind) {
+ case BitstreamEntry::Error:
+ Error("malformed module file");
+ return true;
+ case BitstreamEntry::EndBlock:
+ return false;
- unsigned BlockID = Stream.ReadSubBlockID();
+ case BitstreamEntry::SubBlock:
+ if (Entry.ID == bitc::MODULE_BLOCK_ID)
+ return ParseModuleTriple(Triple);
- // We only know the MODULE subblock ID.
- switch (BlockID) {
- case bitc::MODULE_BLOCK_ID:
- if (ParseModuleTriple(Triple))
+ // Ignore other sub-blocks.
+ if (Stream.SkipBlock()) {
+ Error("malformed block record in AST file");
return true;
- break;
- default:
- if (Stream.SkipBlock())
- return Error("Malformed block record");
- break;
+ }
+ continue;
+
+ case BitstreamEntry::Record:
+ Stream.skipRecord(Entry.ID);
+ continue;
}
}
-
- return false;
}
/// ParseMetadataAttachment - Parse metadata attachments.
return Error("Malformed block record");
SmallVector<uint64_t, 64> Record;
- while(1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of PARAMATTR block");
+ while (1) {
+ BitstreamEntry Entry = Stream.advanceSkippingSubblocks();
+
+ switch (Entry.Kind) {
+ case BitstreamEntry::SubBlock: // Handled for us already.
+ case BitstreamEntry::Error:
+ return Error("malformed metadata block");
+ case BitstreamEntry::EndBlock:
+ return false;
+ case BitstreamEntry::Record:
+ // The interesting case.
break;
}
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
- }
+
// Read a metadata attachment record.
Record.clear();
- switch (Stream.ReadRecord(Code, Record)) {
+ switch (Stream.readRecord(Entry.ID, Record)) {
default: // Default behavior: ignore.
break;
case bitc::METADATA_ATTACHMENT: {
return Error("Invalid metadata kind ID");
Value *Node = MDValueList.getValueFwdRef(Record[i+1]);
Inst->setMetadata(I->second, cast<MDNode>(Node));
+ if (I->second == LLVMContext::MD_tbaa)
+ InstsWithTBAATag.push_back(Inst);
}
break;
}
}
}
- return false;
}
/// ParseFunctionBody - Lazily parse the specified function body block.
// Read all the records.
SmallVector<uint64_t, 64> Record;
while (1) {
- unsigned Code = Stream.ReadCode();
- if (Code == bitc::END_BLOCK) {
- if (Stream.ReadBlockEnd())
- return Error("Error at end of function block");
- break;
- }
+ BitstreamEntry Entry = Stream.advance();
- if (Code == bitc::ENTER_SUBBLOCK) {
- switch (Stream.ReadSubBlockID()) {
+ switch (Entry.Kind) {
+ case BitstreamEntry::Error:
+ return Error("Bitcode error in function block");
+ case BitstreamEntry::EndBlock:
+ goto OutOfRecordLoop;
+
+ case BitstreamEntry::SubBlock:
+ switch (Entry.ID) {
default: // Skip unknown content.
if (Stream.SkipBlock())
return Error("Malformed block record");
break;
}
continue;
- }
- if (Code == bitc::DEFINE_ABBREV) {
- Stream.ReadAbbrevRecord();
- continue;
+ case BitstreamEntry::Record:
+ // The interesting case.
+ break;
}
// Read a record.
Record.clear();
Instruction *I = 0;
- unsigned BitCode = Stream.ReadRecord(Code, Record);
+ unsigned BitCode = Stream.readRecord(Entry.ID, Record);
switch (BitCode) {
default: // Default behavior: reject
return Error("Unknown instruction");
Opc == Instruction::AShr) {
if (Record[OpNum] & (1 << bitc::PEO_EXACT))
cast<BinaryOperator>(I)->setIsExact(true);
+ } else if (isa<FPMathOperator>(I)) {
+ FastMathFlags FMF;
+ if (0 != (Record[OpNum] & FastMathFlags::UnsafeAlgebra))
+ FMF.setUnsafeAlgebra();
+ if (0 != (Record[OpNum] & FastMathFlags::NoNaNs))
+ FMF.setNoNaNs();
+ if (0 != (Record[OpNum] & FastMathFlags::NoInfs))
+ FMF.setNoInfs();
+ if (0 != (Record[OpNum] & FastMathFlags::NoSignedZeros))
+ FMF.setNoSignedZeros();
+ if (0 != (Record[OpNum] & FastMathFlags::AllowReciprocal))
+ FMF.setAllowReciprocal();
+ if (FMF.any())
+ I->setFastMathFlags(FMF);
}
+
}
break;
}
case bitc::FUNC_CODE_INST_SWITCH: { // SWITCH: [opty, op0, op1, ...]
// Check magic
if ((Record[0] >> 16) == SWITCH_INST_MAGIC) {
- // New SwitchInst format with case ranges.
+ // "New" SwitchInst format with case ranges. The changes to write this
+ // format were reverted but we still recognize bitcode that uses it.
+ // Hopefully someday we will have support for case ranges and can use
+ // this format again.
Type *OpTy = getTypeByID(Record[1]);
unsigned ValueBitWidth = cast<IntegerType>(OpTy)->getBitWidth();
unsigned CurIdx = 5;
for (unsigned i = 0; i != NumCases; ++i) {
- IntegersSubsetToBB CaseBuilder;
+ SmallVector<ConstantInt*, 1> CaseVals;
unsigned NumItems = Record[CurIdx++];
for (unsigned ci = 0; ci != NumItems; ++ci) {
bool isSingleNumber = Record[CurIdx++];
APInt High =
ReadWideAPInt(makeArrayRef(&Record[CurIdx], ActiveWords),
ValueBitWidth);
-
- CaseBuilder.add(IntItem::fromType(OpTy, Low),
- IntItem::fromType(OpTy, High));
CurIdx += ActiveWords;
+
+ // FIXME: It is not clear whether values in the range should be
+ // compared as signed or unsigned values. The partially
+ // implemented changes that used this format in the past used
+ // unsigned comparisons.
+ for ( ; Low.ule(High); ++Low)
+ CaseVals.push_back(ConstantInt::get(Context, Low));
} else
- CaseBuilder.add(IntItem::fromType(OpTy, Low));
+ CaseVals.push_back(ConstantInt::get(Context, Low));
}
BasicBlock *DestBB = getBasicBlock(Record[CurIdx++]);
- IntegersSubset Case = CaseBuilder.getCase();
- SI->addCase(Case, DestBB);
+ for (SmallVector<ConstantInt*, 1>::iterator cvi = CaseVals.begin(),
+ cve = CaseVals.end(); cvi != cve; ++cvi)
+ SI->addCase(*cvi, DestBB);
}
- uint16_t Hash = SI->hash();
- if (Hash != (Record[0] & 0xFFFF))
- return Error("Invalid SWITCH record");
I = SI;
break;
}
case bitc::FUNC_CODE_INST_INVOKE: {
// INVOKE: [attrs, cc, normBB, unwindBB, fnty, op0,op1,op2, ...]
if (Record.size() < 4) return Error("Invalid INVOKE record");
- AttrListPtr PAL = getAttributes(Record[0]);
+ AttributeSet PAL = getAttributes(Record[0]);
unsigned CCInfo = Record[1];
BasicBlock *NormalBB = getBasicBlock(Record[2]);
BasicBlock *UnwindBB = getBasicBlock(Record[3]);
if (Record.size() < 3)
return Error("Invalid CALL record");
- AttrListPtr PAL = getAttributes(Record[0]);
+ AttributeSet PAL = getAttributes(Record[0]);
unsigned CCInfo = Record[1];
unsigned OpNum = 2;
ValueList.AssignValue(I, NextValueNo++);
}
+OutOfRecordLoop:
+
// Check the function list for unresolved values.
if (Argument *A = dyn_cast<Argument>(ValueList.back())) {
if (A->getParent() == 0) {
}
std::vector<std::pair<Function*, Function*> >().swap(UpgradedIntrinsics);
+ for (unsigned I = 0, E = InstsWithTBAATag.size(); I < E; I++)
+ UpgradeInstWithTBAATag(InstsWithTBAATag[I]);
+
return false;
}
Stream.init(*StreamFile);
unsigned char buf[16];
- if (Bytes->readBytes(0, 16, buf, NULL) == -1)
+ if (Bytes->readBytes(0, 16, buf) == -1)
return Error("Bitcode stream must be at least 16 bytes in length");
if (!isBitcode(buf, buf + 16))
projects / oota-llvm.git / blobdiff