clarify: stub emission depends on the version of the linker you use, it has nothing

[oota-llvm.git] / lib / Target / TargetData.cpp

diff --git a/lib/Target/TargetData.cpp b/lib/Target/TargetData.cpp
index 213bd5f31ffd6cdf2a67ed5e9c80851feeabde2f..7b843df7422dd42dfa757dc9196dc9353dd9cd15 100644 (file)
--- a/lib/Target/TargetData.cpp
+++ b/lib/Target/TargetData.cpp
@@ -23,6 +23,7 @@
 #include "llvm/Support/GetElementPtrTypeIterator.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/ManagedStatic.h"
+#include "llvm/System/Mutex.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringExtras.h"
 #include <algorithm>
@@ -51,14 +52,14 @@ StructLayout::StructLayout(const StructType *ST, const TargetData &TD) {
     unsigned TyAlign = ST->isPacked() ? 1 : TD.getABITypeAlignment(Ty);
 
     // Add padding if necessary to align the data element properly.
-    if (StructSize & TyAlign-1)
+    if ((StructSize & (TyAlign-1)) != 0)
       StructSize = TargetData::RoundUpAlignment(StructSize, TyAlign);
 
     // 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.
@@ -66,7 +67,7 @@ StructLayout::StructLayout(const StructType *ST, const TargetData &TD) {
 
   // 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-1) != 0)
+  if ((StructSize & (StructAlignment-1)) != 0)
     StructSize = TargetData::RoundUpAlignment(StructSize, StructAlignment);
 }
 
@@ -176,11 +177,11 @@ void TargetData::init(const std::string &TargetDescription) {
   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
@@ -302,14 +303,14 @@ unsigned TargetData::getAlignmentInfo(AlignTypeEnum AlignType,
       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;
@@ -345,11 +346,13 @@ typedef DenseMap<LayoutKey, StructLayout*, DenseMapLayoutKeyInfo> LayoutInfoTy;
 }
 
 static ManagedStatic<LayoutInfoTy> LayoutInfo;
+static ManagedStatic<sys::SmartMutex<true> > LayoutLock;
 
 TargetData::~TargetData() {
   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; ) {
@@ -366,6 +369,7 @@ TargetData::~TargetData() {
 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;
 
@@ -390,6 +394,7 @@ const StructLayout *TargetData::getStructLayout(const StructType *Ty) const {
 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()) return;
   
@@ -425,7 +430,7 @@ uint64_t TargetData::getTypeSizeInBits(const Type *Ty) const {
     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:
     // Get the layout annotation... which is lazily created on demand.
@@ -475,12 +480,12 @@ unsigned char TargetData::getAlignment(const Type *Ty, bool abi_or_pref) const {
             : 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);
@@ -535,7 +540,7 @@ unsigned char TargetData::getPreferredTypeAlignmentShift(const Type *Ty) const {
 
 /// 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());
 }
 
@@ -568,7 +573,7 @@ uint64_t TargetData::getIndexedOffset(const Type *ptrTy, Value* const* Indices,
 
       // 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);
     }
   }