#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/System/Mutex.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringExtras.h"
#include <algorithm>
StructSize = 0;
NumElements = ST->getNumElements();
- // Loop over each of the elements, placing them in memory...
+ // Loop over each of the elements, placing them in memory.
for (unsigned i = 0, e = NumElements; i != e; ++i) {
const Type *Ty = ST->getElementType(i);
unsigned TyAlign = ST->isPacked() ? 1 : TD.getABITypeAlignment(Ty);
- // Add padding if necessary to align the data element properly...
- StructSize = (StructSize + TyAlign - 1)/TyAlign * TyAlign;
+ // Add padding if necessary to align the data element properly.
+ if ((StructSize & (TyAlign-1)) != 0)
+ StructSize = TargetData::RoundUpAlignment(StructSize, TyAlign);
- // Keep track of maximum alignment constraint
+ // Keep track of maximum alignment constraint.
StructAlignment = std::max(TyAlign, StructAlignment);
MemberOffsets[i] = StructSize;
- StructSize += TD.getABITypeSize(Ty); // Consume space for this data item
+ StructSize += TD.getTypeAllocSize(Ty); // Consume space for this data item
}
// Empty structures have alignment of 1 byte.
// Add padding to the end of the struct so that it could be put in an array
// and all array elements would be aligned correctly.
- if (StructSize % StructAlignment != 0)
- StructSize = (StructSize/StructAlignment + 1) * StructAlignment;
+ if ((StructSize & (StructAlignment-1)) != 0)
+ StructSize = TargetData::RoundUpAlignment(StructSize, StructAlignment);
}
PointerPrefAlign = PointerABIAlign;
// Default alignments
- setAlignment(INTEGER_ALIGN, 1, 1, 1); // Bool
- setAlignment(INTEGER_ALIGN, 1, 1, 8); // Byte
- setAlignment(INTEGER_ALIGN, 2, 2, 16); // short
- setAlignment(INTEGER_ALIGN, 4, 4, 32); // int
- setAlignment(INTEGER_ALIGN, 4, 8, 64); // long
+ setAlignment(INTEGER_ALIGN, 1, 1, 1); // i1
+ setAlignment(INTEGER_ALIGN, 1, 1, 8); // i8
+ setAlignment(INTEGER_ALIGN, 2, 2, 16); // i16
+ setAlignment(INTEGER_ALIGN, 4, 4, 32); // i32
+ setAlignment(INTEGER_ALIGN, 4, 8, 64); // i64
setAlignment(FLOAT_ALIGN, 4, 4, 32); // float
setAlignment(FLOAT_ALIGN, 8, 8, 64); // double
setAlignment(VECTOR_ALIGN, 8, 8, 64); // v2i32
}
TargetData::TargetData(const Module *M)
- : ImmutablePass((intptr_t)&ID) {
+ : ImmutablePass(&ID) {
init(M->getDataLayout());
}
BestMatchIdx = LargestInt;
} else {
assert(AlignType == VECTOR_ALIGN && "Unknown alignment type!");
-
+
// If we didn't find a vector size that is smaller or equal to this type,
// then we will end up scalarizing this to its element type. Just return
// the alignment of the element.
return getAlignment(cast<VectorType>(Ty)->getElementType(), ABIInfo);
- }
+ }
}
-
+
// Since we got a "best match" index, just return it.
return ABIInfo ? Alignments[BestMatchIdx].ABIAlign
: Alignments[BestMatchIdx].PrefAlign;
}
static ManagedStatic<LayoutInfoTy> LayoutInfo;
+static ManagedStatic<sys::SmartMutex<true> > LayoutLock;
TargetData::~TargetData() {
- if (LayoutInfo.isConstructed()) {
- // Remove any layouts for this TD.
- LayoutInfoTy &TheMap = *LayoutInfo;
- for (LayoutInfoTy::iterator I = TheMap.begin(), E = TheMap.end();
- I != E; ) {
- if (I->first.first == this) {
- I->second->~StructLayout();
- free(I->second);
- TheMap.erase(I++);
- } else {
- ++I;
- }
+ if (!LayoutInfo.isConstructed())
+ return;
+
+ sys::SmartScopedLock<true> Lock(*LayoutLock);
+ // Remove any layouts for this TD.
+ LayoutInfoTy &TheMap = *LayoutInfo;
+ for (LayoutInfoTy::iterator I = TheMap.begin(), E = TheMap.end(); I != E; ) {
+ if (I->first.first == this) {
+ I->second->~StructLayout();
+ free(I->second);
+ TheMap.erase(I++);
+ } else {
+ ++I;
}
}
}
const StructLayout *TargetData::getStructLayout(const StructType *Ty) const {
LayoutInfoTy &TheMap = *LayoutInfo;
+ sys::SmartScopedLock<true> Lock(*LayoutLock);
StructLayout *&SL = TheMap[LayoutKey(this, Ty)];
if (SL) return SL;
void TargetData::InvalidateStructLayoutInfo(const StructType *Ty) const {
if (!LayoutInfo.isConstructed()) return; // No cache.
+ sys::SmartScopedLock<true> Lock(*LayoutLock);
LayoutInfoTy::iterator I = LayoutInfo->find(LayoutKey(this, Ty));
- if (I != LayoutInfo->end()) {
- I->second->~StructLayout();
- free(I->second);
- LayoutInfo->erase(I);
- }
+ if (I == LayoutInfo->end()) return;
+
+ I->second->~StructLayout();
+ free(I->second);
+ LayoutInfo->erase(I);
}
return getPointerSizeInBits();
case Type::ArrayTyID: {
const ArrayType *ATy = cast<ArrayType>(Ty);
- return getABITypeSizeInBits(ATy->getElementType())*ATy->getNumElements();
+ return getTypeAllocSizeInBits(ATy->getElementType())*ATy->getNumElements();
}
- case Type::StructTyID: {
+ case Type::StructTyID:
// Get the layout annotation... which is lazily created on demand.
- const StructLayout *Layout = getStructLayout(cast<StructType>(Ty));
- return Layout->getSizeInBits();
- }
+ return getStructLayout(cast<StructType>(Ty))->getSizeInBits();
case Type::IntegerTyID:
return cast<IntegerType>(Ty)->getBitWidth();
case Type::VoidTyID:
// only 80 bits contain information.
case Type::X86_FP80TyID:
return 80;
- case Type::VectorTyID: {
- const VectorType *PTy = cast<VectorType>(Ty);
- return PTy->getBitWidth();
- }
+ case Type::VectorTyID:
+ return cast<VectorType>(Ty)->getBitWidth();
default:
- assert(0 && "TargetData::getTypeSizeInBits(): Unsupported type");
+ LLVM_UNREACHABLE("TargetData::getTypeSizeInBits(): Unsupported type");
break;
}
return 0;
assert(Ty->isSized() && "Cannot getTypeInfo() on a type that is unsized!");
switch (Ty->getTypeID()) {
- /* Early escape for the non-numeric types */
+ // Early escape for the non-numeric types.
case Type::LabelTyID:
case Type::PointerTyID:
return (abi_or_pref
: getPointerPrefAlignment());
case Type::ArrayTyID:
return getAlignment(cast<ArrayType>(Ty)->getElementType(), abi_or_pref);
-
+
case Type::StructTyID: {
// Packed structure types always have an ABI alignment of one.
if (cast<StructType>(Ty)->isPacked() && abi_or_pref)
return 1;
-
+
// Get the layout annotation... which is lazily created on demand.
const StructLayout *Layout = getStructLayout(cast<StructType>(Ty));
unsigned Align = getAlignmentInfo(AGGREGATE_ALIGN, 0, abi_or_pref, Ty);
AlignType = VECTOR_ALIGN;
break;
default:
- assert(0 && "Bad type for getAlignment!!!");
+ LLVM_UNREACHABLE("Bad type for getAlignment!!!");
break;
}
/// getIntPtrType - Return an unsigned integer type that is the same size or
/// greater to the host pointer size.
-const Type *TargetData::getIntPtrType() const {
+const IntegerType *TargetData::getIntPtrType() const {
return IntegerType::get(getPointerSizeInBits());
}
// Get the array index and the size of each array element.
int64_t arrayIdx = cast<ConstantInt>(Indices[CurIDX])->getSExtValue();
- Result += arrayIdx * (int64_t)getABITypeSize(Ty);
+ Result += arrayIdx * (int64_t)getTypeAllocSize(Ty);
}
}
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