#define LLVM_TARGET_TARGETDATA_H
#include "llvm/Pass.h"
-#include "llvm/System/DataTypes.h"
-#include "llvm/Support/ErrorHandling.h"
#include "llvm/ADT/SmallVector.h"
-#include <string>
namespace llvm {
class IntegerType;
class StructType;
class StructLayout;
+class StructLayoutMap;
class GlobalVariable;
class LLVMContext;
unsigned char PointerABIAlign; ///< Pointer ABI alignment
unsigned char PointerPrefAlign; ///< Pointer preferred alignment
- //! Where the primitive type alignment data is stored.
- /*!
- @sa init().
- @note Could support multiple size pointer alignments, e.g., 32-bit pointers
- vs. 64-bit pointers by extending TargetAlignment, but for now, we don't.
- */
+ SmallVector<unsigned char, 8> LegalIntWidths; ///< Legal Integers.
+
+ /// Alignments- Where the primitive type alignment data is stored.
+ ///
+ /// @sa init().
+ /// @note Could support multiple size pointer alignments, e.g., 32-bit
+ /// pointers vs. 64-bit pointers by extending TargetAlignment, but for now,
+ /// we don't.
SmallVector<TargetAlignElem, 16> Alignments;
- //! Alignment iterator shorthand
- typedef SmallVector<TargetAlignElem, 16>::iterator align_iterator;
- //! Constant alignment iterator shorthand
- typedef SmallVector<TargetAlignElem, 16>::const_iterator align_const_iterator;
- //! Invalid alignment.
- /*!
- This member is a signal that a requested alignment type and bit width were
- not found in the SmallVector.
- */
+
+ /// InvalidAlignmentElem - This member is a signal that a requested alignment
+ /// type and bit width were not found in the SmallVector.
static const TargetAlignElem InvalidAlignmentElem;
- // Opaque pointer for the StructType -> StructLayout map.
- mutable void* LayoutMap;
+ // The StructType -> StructLayout map.
+ mutable StructLayoutMap *LayoutMap;
//! Set/initialize target alignments
void setAlignment(AlignTypeEnum align_type, unsigned char abi_align,
///
/// Predicate that tests a TargetAlignElem reference returned by get() against
/// InvalidAlignmentElem.
- inline bool validAlignment(const TargetAlignElem &align) const {
- return (&align != &InvalidAlignmentElem);
+ bool validAlignment(const TargetAlignElem &align) const {
+ return &align != &InvalidAlignmentElem;
}
public:
///
/// @note This has to exist, because this is a pass, but it should never be
/// used.
- TargetData() : ImmutablePass(&ID) {
- llvm_report_error("Bad TargetData ctor used. "
- "Tool did not specify a TargetData to use?");
- }
-
+ TargetData();
+
/// Constructs a TargetData from a specification string. See init().
- explicit TargetData(const std::string &TargetDescription)
+ explicit TargetData(StringRef TargetDescription)
: ImmutablePass(&ID) {
init(TargetDescription);
}
PointerMemSize(TD.PointerMemSize),
PointerABIAlign(TD.PointerABIAlign),
PointerPrefAlign(TD.PointerPrefAlign),
+ LegalIntWidths(TD.LegalIntWidths),
Alignments(TD.Alignments),
LayoutMap(0)
{ }
~TargetData(); // Not virtual, do not subclass this class
//! Parse a target data layout string and initialize TargetData alignments.
- void init(const std::string &TargetDescription);
+ void init(StringRef TargetDescription);
/// Target endianness...
- bool isLittleEndian() const { return LittleEndian; }
- bool isBigEndian() const { return !LittleEndian; }
+ bool isLittleEndian() const { return LittleEndian; }
+ bool isBigEndian() const { return !LittleEndian; }
/// getStringRepresentation - Return the string representation of the
/// TargetData. This representation is in the same format accepted by the
/// string constructor above.
std::string getStringRepresentation() const;
+
+ /// isLegalInteger - This function returns true if the specified type is
+ /// known tobe a native integer type supported by the CPU. For example,
+ /// i64 is not native on most 32-bit CPUs and i37 is not native on any known
+ /// one. This returns false if the integer width is not legal.
+ ///
+ /// The width is specified in bits.
+ ///
+ bool isLegalInteger(unsigned Width) const {
+ for (unsigned i = 0, e = LegalIntWidths.size(); i != e; ++i)
+ if (LegalIntWidths[i] == Width)
+ return true;
+ return false;
+ }
+
+ bool isIllegalInteger(unsigned Width) const {
+ return !isLegalInteger(Width);
+ }
+
/// Target pointer alignment
unsigned char getPointerABIAlignment() const { return PointerABIAlign; }
/// Return target's alignment for stack-based pointers