#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>
<br><br>
<i>@verbatim<type><size>:<abi_align>:<pref_align>@endverbatim</i>: Numeric type
alignment. Type is
- one of <i>i|f|v|a</i>, corresponding to integer, floating point, vector (aka
- packed) or aggregate. Size indicates the size, e.g., 32 or 64 bits.
+ one of <i>i|f|v|a</i>, corresponding to integer, floating point, vector, or
+ aggregate. Size indicates the size, e.g., 32 or 64 bits.
\p
- The default string, fully specified is:
+ The default string, fully specified, is:
<br><br>
- "E-p:64:64:64-a0:0:0-f32:32:32-f64:0:64"
- "-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:0:64"
+ "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64"
+ "-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64"
"-v64:64:64-v128:128:128"
<br><br>
Note that in the case of aggregates, 0 is the default ABI and preferred
void TargetData::init(const std::string &TargetDescription) {
std::string temp = TargetDescription;
+ LayoutMap = 0;
LittleEndian = false;
PointerMemSize = 8;
PointerABIAlign = 8;
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
+ setAlignment(VECTOR_ALIGN, 8, 8, 64); // v2i32, v1i64, ...
setAlignment(VECTOR_ALIGN, 16, 16, 128); // v16i8, v8i16, v4i32, ...
- setAlignment(AGGREGATE_ALIGN, 0, 8, 0); // struct, union, class, ...
+ setAlignment(AGGREGATE_ALIGN, 0, 8, 0); // struct
while (!temp.empty()) {
std::string token = getToken(temp, "-");
: Alignments[BestMatchIdx].PrefAlign;
}
-namespace {
-
-/// LayoutInfo - The lazy cache of structure layout information maintained by
-/// TargetData. Note that the struct types must have been free'd before
-/// llvm_shutdown is called (and thus this is deallocated) because all the
-/// targets with cached elements should have been destroyed.
-///
-typedef std::pair<const TargetData*,const StructType*> LayoutKey;
-
-struct DenseMapLayoutKeyInfo {
- static inline LayoutKey getEmptyKey() { return LayoutKey(0, 0); }
- static inline LayoutKey getTombstoneKey() {
- return LayoutKey((TargetData*)(intptr_t)-1, 0);
- }
- static unsigned getHashValue(const LayoutKey &Val) {
- return DenseMapInfo<void*>::getHashValue(Val.first) ^
- DenseMapInfo<void*>::getHashValue(Val.second);
- }
- static bool isEqual(const LayoutKey &LHS, const LayoutKey &RHS) {
- return LHS == RHS;
- }
-
- static bool isPod() { return true; }
-};
-
-typedef DenseMap<LayoutKey, StructLayout*, DenseMapLayoutKeyInfo> LayoutInfoTy;
-
-}
-
-static ManagedStatic<LayoutInfoTy> LayoutInfo;
+typedef DenseMap<const StructType*, StructLayout*>LayoutInfoTy;
TargetData::~TargetData() {
- if (!LayoutInfo.isConstructed())
+ if (!LayoutMap)
return;
// Remove any layouts for this TD.
- LayoutInfoTy &TheMap = *LayoutInfo;
+ LayoutInfoTy &TheMap = *static_cast<LayoutInfoTy*>(LayoutMap);
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;
- }
+ I->second->~StructLayout();
+ free(I->second);
+ TheMap.erase(I++);
}
+
+ delete static_cast<LayoutInfoTy*>(LayoutMap);
}
const StructLayout *TargetData::getStructLayout(const StructType *Ty) const {
- LayoutInfoTy &TheMap = *LayoutInfo;
+ if (!LayoutMap)
+ LayoutMap = static_cast<void*>(new LayoutInfoTy());
+
+ LayoutInfoTy &TheMap = *static_cast<LayoutInfoTy*>(LayoutMap);
- StructLayout *&SL = TheMap[LayoutKey(this, Ty)];
+ StructLayout *&SL = TheMap[Ty];
if (SL) return SL;
// Otherwise, create the struct layout. Because it is variable length, we
/// removed, this method must be called whenever a StructType is removed to
/// avoid a dangling pointer in this cache.
void TargetData::InvalidateStructLayoutInfo(const StructType *Ty) const {
- if (!LayoutInfo.isConstructed()) return; // No cache.
+ if (!LayoutMap) return; // No cache.
- LayoutInfoTy::iterator I = LayoutInfo->find(LayoutKey(this, Ty));
+ LayoutInfoTy* LayoutInfo = static_cast<LayoutInfoTy*>(LayoutMap);
+ LayoutInfoTy::iterator I = LayoutInfo->find(Ty);
if (I == LayoutInfo->end()) return;
I->second->~StructLayout();
case Type::VectorTyID:
return cast<VectorType>(Ty)->getBitWidth();
default:
- assert(0 && "TargetData::getTypeSizeInBits(): Unsupported type");
+ llvm_unreachable("TargetData::getTypeSizeInBits(): Unsupported type");
break;
}
return 0;
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 IntegerType *TargetData::getIntPtrType() const {
- return IntegerType::get(getPointerSizeInBits());
+const IntegerType *TargetData::getIntPtrType(LLVMContext &C) const {
+ return IntegerType::get(C, getPointerSizeInBits());
}
TI = gep_type_begin(ptrTy, Indices, Indices+NumIndices);
for (unsigned CurIDX = 0; CurIDX != NumIndices; ++CurIDX, ++TI) {
if (const StructType *STy = dyn_cast<StructType>(*TI)) {
- assert(Indices[CurIDX]->getType() == Type::Int32Ty &&
+ assert(Indices[CurIDX]->getType() ==
+ Type::getInt32Ty(ptrTy->getContext()) &&
"Illegal struct idx");
unsigned FieldNo = cast<ConstantInt>(Indices[CurIDX])->getZExtValue();
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